EP2638350B1 - Fluid/fluid heat exchanger - Google Patents

Fluid/fluid heat exchanger Download PDF

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Publication number
EP2638350B1
EP2638350B1 EP11781518.3A EP11781518A EP2638350B1 EP 2638350 B1 EP2638350 B1 EP 2638350B1 EP 11781518 A EP11781518 A EP 11781518A EP 2638350 B1 EP2638350 B1 EP 2638350B1
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EP
European Patent Office
Prior art keywords
fluid
heat exchanger
inlet
outlet
plates
Prior art date
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Active
Application number
EP11781518.3A
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German (de)
French (fr)
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EP2638350A1 (en
Inventor
Christophe Denoual
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
Original Assignee
Valeo Systemes Thermiques SAS
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Priority to PL11781518T priority Critical patent/PL2638350T3/en
Publication of EP2638350A1 publication Critical patent/EP2638350A1/en
Application granted granted Critical
Publication of EP2638350B1 publication Critical patent/EP2638350B1/en
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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
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/0056—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 with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
    • 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
    • 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
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • 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

Definitions

  • the invention is in the field of heating, ventilation and / or air conditioning systems equipping a motor vehicle. It relates to a heat exchanger integrated in an air conditioning loop and / or a secondary loop of such a heating, ventilation and / or air conditioning system. It also relates to an air conditioning loop equipped with such a heat exchanger.
  • An exchanger according to the preamble of claim 1 is known from US 5964283 .
  • a heat exchanger comprises a bundle of tubes formed by a stack of first tubes for the circulation of a first fluid. Between two first adjacent tubes, is created a passage for the circulation of a second fluid.
  • Such a heat exchanger is provided with inlet and outlet orifices of the first fluid to ensure a circulation of the first fluid in the heat exchanger.
  • the heat exchanger is also provided with inlet and outlet ports of the second fluid to ensure a circulation of the second fluid in the heat exchanger.
  • the inlet and outlet ports of the first fluid and the second fluid are arranged on an end face of the heat exchanger. They are generally arranged near respective corners of the end face.
  • a heat exchanger is particularly known from the document FR 2 891 615 .
  • the inlet and the outlet of the same fluid are spaced apart from each other. It is therefore necessary to arrange a set of pipes for connecting the heat exchanger to the air conditioning loop and / or the secondary loop of the heating, ventilation and / or air conditioning system. This increases the overall size and impairs the compactness of the heating, ventilation and / or air conditioning system.
  • Such positioning of the fluid inlet and outlet ports constitutes a constraint for the integration of the heat exchanger in an air-conditioning system fitted to a motor vehicle, in particular in an air-conditioning loop, inside which circulates a refrigerant, such as those known under the name R744, R134a or the like, or in a secondary loop inside which circulates a coolant, such as a mixture of water and glycol or the like.
  • a refrigerant such as those known under the name R744, R134a or the like
  • a secondary loop inside which circulates a coolant, such as a mixture of water and glycol or the like.
  • connection of such a heat exchanger in the air conditioning loop and / or in the secondary loop frequently requires pipes having a complex configuration which are sources of pressure losses.
  • an additional component in particular an expansion member or the like, comprises the inlet and outlet orifices having a reduced spacing. It is therefore necessary to define a complicated path of tubing to connect the inlet and outlet ports of the heat exchanger and the inlet and outlet ports of the additional component. Alternatively, it is necessary to have a complementary connecting piece. All of these solutions increase the manufacturing costs, the size and weight of a heating, ventilation and / or air conditioning system.
  • the object of the present invention is to provide a heat exchanger ensuring an efficient heat transfer between a first fluid and a second fluid, the heat exchanger providing connection to an air conditioning loop and / or a secondary loop of a heating, ventilation and / or air conditioning system equipping a motor vehicle, which are simple, easy, flexible and optimized to include allowing connection of an additional component having a relatively arbitrary distance.
  • Such a heat exchanger providing thermal transfer between a first fluid and a second fluid comprises a stack of plates comprising a last plate and a penultimate plate jointly defining an end chamber, the last plate being provided with at least one inlet of the second fluid and an outlet of the second fluid, the stack of plates defining an inlet passage of the second fluid and an outlet passage of the second fluid.
  • the end chamber houses a conduit means having an inlet flow channel for channeling the second fluid between the inlet of the second fluid and the inlet passage of the second fluid and an outlet circulation channel for channeling the second fluid between the outlet of the second fluid and the outlet passage of the second fluid.
  • the channeling means is constituted by an insert housed in the end chamber.
  • the insert is formed by at least one blade.
  • the blade has a bottom wall and a contour interconnected by a side wall.
  • the bottom wall is in contact with the penultimate plate of the stack of plates and the contour is in contact with the last plate of the stack of plates.
  • the inlet circulation channel and the outlet circulation channel of the second fluid are delimited by the insert and the last plate.
  • the insert is formed by two blades assembled together. According to this arrangement, the bottom wall of one of the blades is in contact with the penultimate plate of the stack of plates, the bottom wall of the other of the blades is in contact with the last plate of the stack of plates and the respective contours of the blades is in mutual contact.
  • the insert consists of two disjoint distribution compartments.
  • the two distribution compartments are identical.
  • the insert consists of a distribution device, formed of a single piece, comprising two distribution chambers.
  • the two distribution chambers are arranged in a point symmetry with respect to each other.
  • the inlet circulation channel and the outlet circulation channel of the second fluid are orthogonal to the inlet passage of the second fluid and the outlet passage of the second fluid.
  • the inlet of the second fluid and the outlet of the second fluid are arranged in a central zone of the last plate of the stack of plates.
  • An air conditioning loop comprises a heat exchanger as previously defined.
  • the air conditioning loop comprises a connecting element comprising an inlet opening and an outlet opening for the second fluid and a major axis passing through the centers of the intake opening and the opening of the evacuation.
  • the major axis forms an angle between 0 ° and 90 ° with a first central axis of the last plate stack of plates.
  • FIGS 1 and 2 are schematic views of a heating, ventilation and / or air conditioning system 1 incorporating a heat exchanger according to the present invention.
  • the heating, ventilation and / or air conditioning system 1, presented on Figures 1 and 2 is intended to equip a motor vehicle to change the aerothermal parameters of an interior air flow 8 to be distributed inside a passenger compartment of the motor vehicle.
  • the heating, ventilation and / or air conditioning system 1 comprises an air conditioning loop 2 inside which circulates a refrigerant, such as one of those known under the name R744, R134a or the like.
  • the air conditioning loop 2 comprises a compressor 3, able to compress the refrigerant fluid, a first heat exchanger 4, in particular an air / refrigerant heat exchanger 4, able to function as a condenser 4 and traversed by a flow of outside air, an expansion member 5, able to relax the cooling fluid, and an accumulator 6, able to create a refrigerant storage zone and prevent an intake of coolant in the liquid state inside the compressor 3 .
  • the figure 1 illustrates a first embodiment of the heating, ventilation and / or air-conditioning system 1.
  • the air conditioning loop 2 comprises a second heat exchanger 7, able to function as an evaporator 7, traversed by the internal air flow 8.
  • the inner air flow 8 is able to cool and / or to dehumidify, prior to its diffusion inside the passenger compartment.
  • the air conditioning loop 2 also comprises an internal heat exchanger 9 provided to allow heat transfer between the refrigerant fluid inside a high pressure circulation channel 10 of the internal heat exchanger 9 and the refrigerant present inside a low pressure circulation channel 11 of the internal heat exchanger 9.
  • the high pressure circulation channel 10 extends between a high pressure inlet 12 and a high pressure outlet 13 of the internal heat exchanger 9.
  • the low pressure circulation channel 11 extends between a low pressure inlet 14 and an outlet low pressure 15 of the internal heat exchanger 9.
  • the refrigerant circulates successively in the compressor 3, the first heat exchanger 4, the high pressure circulation channel 10 of the exchanger internal heat exchanger 9, the expansion element 5, the second heat exchanger 7, the accumulator 6, the low-pressure circulation channel 11 of the internal heat exchanger 9 and the compressor 3.
  • the figure 2 illustrates a second alternative embodiment of the heating, ventilation and / or air conditioning system 1.
  • the heating, ventilation and / or air conditioning system 1 comprises a refrigerant / heat transfer fluid heat exchanger 17 provided to allow a heat transfer between the refrigerant circulating inside the air conditioning loop 2 and a coolant circulating inside a secondary loop 18.
  • the coolant is, for example, consisting of a mixture of water and glycol.
  • the refrigerant / heat transfer fluid heat exchanger 17 is arranged in the air conditioning loop 2 and in the secondary loop 18.
  • the refrigerant / heat transfer fluid heat exchanger 17 comprises a refrigerant circulation channel 19 which extends between a fluid inlet refrigerant 20 and a refrigerant output 21.
  • the refrigerant / heat transfer fluid heat exchanger 17 also comprises a heat transfer fluid circulation channel 22 which extends between a heat transfer fluid inlet 23 and a heat transfer fluid outlet 24.
  • the secondary loop 18 comprises a pump 25, intended to circulate the coolant, and a third heat exchanger 26, or heater 26, through which the inner air flow 8 prior to its distribution inside. of the passenger compartment of the motor vehicle.
  • the heat transfer fluid circulates successively in the pump 25, the refrigerant fluid heat exchanger / coolant 17, the fluid circulation channel coolant 22, then through the third heat exchanger 26 and the pump 25.
  • the coolant circulates, inside the air conditioning loop 2 in the direction of circulation 16 of the refrigerant, successively in the compressor 3, the first heat exchanger 4, the expansion member 5, the channel refrigerant circulation 19, the accumulator 6 and the compressor 3.
  • the refrigerant / heat transfer fluid heat exchanger 17 may be arranged in other positions in the air conditioning loop 2.
  • the heating, ventilation and / or air conditioning system 1 comprises an internal heat exchanger 9, in a configuration as described in FIG. figure 1 , and a refrigerant / heat transfer fluid heat exchanger 17, in a configuration as described in FIG. figure 2 .
  • the figure 3 is a perspective view of the exchanger of a heat exchanger 110 according to the present invention.
  • the heat exchanger 100 is able to ensure indifferently the function of internal heat exchanger 9, in the configuration illustrated in FIG. figure 1 , or of a refrigerant / heat transfer fluid heat exchanger 17, in the configuration illustrated in FIG. figure 2 .
  • the heat exchanger 100 is able to allow a heat transfer between a first fluid, such as a refrigerant fluid at low or high pressure, and a second fluid, such as the refrigerant fluid at low or high pressure, or the coolant.
  • a first fluid such as a refrigerant fluid at low or high pressure
  • a second fluid such as the refrigerant fluid at low or high pressure
  • the heat exchanger 100 comprises a circulation channel of the first fluid 110 which extends between an inlet of the first fluid 111 and an outlet of the first fluid 112.
  • the heat exchanger 100 also comprises a circulation channel of the second fluid 120 which extends between an inlet of the second fluid 121 and an outlet of the second fluid 122.
  • the first fluid consists of the high pressure refrigerant and the second fluid is the low pressure refrigerant.
  • the circulation channel of the first fluid 110 consists of the high pressure circulation channel 10, the inlet of the first fluid 111 corresponding to the high pressure inlet 12 and the outlet of the first fluid 112 corresponding to the high pressure outlet 13.
  • the circulation channel of the second fluid 120 is constituted by the low pressure circulation channel 11, the inlet of the second fluid 121 corresponding to the low pressure inlet 14 and the outlet of the second fluid 122 corresponding to the low outlet pressure 15.
  • the first fluid consists of the refrigerant fluid at low pressure and the second fluid consists of the high pressure refrigerant fluid.
  • the first fluid consists of the refrigerant fluid and the second fluid is the heat transfer fluid.
  • the flow channel of the first fluid 110 is constituted by the refrigerant circulation channel 19, the inlet of the first fluid 111 corresponding to the refrigerant inlet 20 and the outlet of the first fluid 112 corresponding to the outlet
  • the circulation channel of the second fluid 120 is constituted by the coolant circulation channel 22, the inlet of the second fluid 121 corresponding to the coolant inlet 23 and the outlet of the second fluid 122. corresponding to the heat transfer fluid outlet 24.
  • the first fluid consists of the coolant and the second fluid consists of the coolant.
  • the heat exchanger 100 comprises an end face 123 on which are arranged the inlet of the first fluid 111, the outlet of the first fluid 112, the inlet of the second fluid 121 and the outlet of the second fluid 122.
  • the first fluid and the second fluid enters the heat exchanger 100 and is discharged out of the heat exchanger 100 at the end face 123.
  • the end face 123 may be provided only with the inlet of the first fluid 111 and the outlet of the first fluid 112, or alternatively the inlet of the second fluid 121 and the output of the second fluid 122.
  • the heat exchanger 100 according to the present invention is a heat exchanger comprising a circulation channel of the first fluid 110 and / or a circulation channel of the second fluid 120 which is indifferently arranged in "I", "U” Or any other arrangement, being considered that the heat exchanger 100 according to the present invention jointly comprises an inlet and an outlet of at least one same fluid on the end face 123.
  • the heat exchanger 100 is of generally parallelepipedal shape. However, the heat exchanger 100 is likely to take other forms.
  • the heat exchanger 100 is preferably a plate heat exchanger consisting mainly of a stack of plates 124.
  • the plates 124 are of substantially planar and rectangular conformations and have a depth P, according to the invention. a first direction, and a width L, in a second direction.
  • the first direction is perpendicular to the second direction.
  • the plates 124 also have parts of different depths, especially obtained by stamping.
  • the figures 4 and 5 are, respectively, a partially exploded view and an exploded view of the heat exchanger 110 of the figure 3 .
  • the heat exchanger 110 is constituted by a stack of plates 124.
  • Two contiguous plates 124 are secured to one another via their peripheral edge 125 to form the circulation tubes of the first fluid and the second fluid.
  • the heat exchanger 100 comprises a plurality first flow chambers of the first fluid 126a and a plurality of second flow chambers of the second fluid 126b, alternately arranged to each other.
  • Such an alternating arrangement of the first flow chambers of the first fluid 126a and the second flow chambers of the second fluid 126b makes it possible to optimize the heat transfer between the first fluid and the second fluid.
  • One of the plates 124 of the heat exchanger 100 has the end face 123.
  • the heat exchanger 100 comprises an end chamber 126c.delimits by the last plate 124 and a penultimate plate 124 of the stack of plates 124 constituting the heat exchanger 100.
  • the penultimate plate 124 is contiguous with the last plate 124.
  • the end chamber 126c is indifferently a first circulation chamber 126a of the first fluid or a second circulation chamber 126b of the second fluid, according to various embodiments of the heat exchanger 100.
  • the chamber end 126c is a second flow chamber 126b of the second fluid.
  • the end chamber 126c houses at least one channeling means 127, in particular an insert 127, making it possible to channel the second fluid, on the one hand, from the inlet of the second fluid 121 to a passageway the circulation inlet 130 of the second fluid formed in the plate assembly 124, and secondly, from a circulation outlet passage 131 of the second fluid formed in the plate assembly 124 towards the outlet of the second fluid 122.
  • the channeling means 127 in particular the insert 127, comprises an inlet circulation channel 128a for channeling the second fluid between the inlet of the second fluid 121 and the circulation inlet passage 130 of the second fluid and an inlet flow channel 128b for channeling the second fluid between the outlet of the second fluid 122 the flow outlet passage 131 of the second fluid.
  • the end chamber 126c houses the two circulation channels 128a and 128b of the second fluid.
  • the inlet of the second fluid 121 and the outlet of the second fluid 122 may be formed in a relatively arbitrary area of the end face 123 of the heat exchanger 100.
  • the inlet of the second fluid 121 and the outlet of the second fluid 122 may be arranged in a central zone 129 of the last plate 124 of the stack of plates 124.
  • the central zone 129 is defined as a zone of the outer face 123 of the last plate 124 arranged on either side of a first median axis x, in the first direction, and a second median axis y, in the second direction, of the last plate 124.
  • the central zone 129 is less than 30% of the depth P and / or the width L of the last plate 124.
  • the presence of the inlet flow channel 128a and the inlet flow channel 128b of the second fluid within the end chamber 126c provides significant flexibility for positioning the inlet of the second fluid 121 and the leaving the second fluid 122 through the last plate 124.
  • the inlet circulation channel 128a of the second fluid connects the inlet of the second fluid 121 to the circulation inlet passage 130 of the second fluid which extends through all of the plates 124, except the last plate 124.
  • the circulation inlet passage 130 of the second fluid interconnects the second circulation chambers 126b of the second fluid.
  • the outlet circulation channel 128b of the second fluid connects the circulation outlet passage 131 of the second fluid, which extends through all the plates. 124 except the last plate 124 at the outlet of the second fluid 122.
  • the circulation outlet passage 131 of the second fluid interconnects the second circulation chambers 126b of the second fluid.
  • the inlet circulation channel 128a of the second fluid is orthogonal to the circulation inlet passage 130 of the second fluid and the outlet circulation channel 128b of the second fluid is orthogonal to the circulation outlet passage 131 of the second fluid. fluid.
  • the insert 127 is housed in the end chamber 126c in which the first fluid flows, the insert 127 for channeling the second fluid.
  • the insert 127 includes the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid, disposed in the end chamber 126c for the circulation of the first fluid.
  • the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are made in the form of an additional part constituted by the insert 127.
  • the insert 127 is disposed in the end chamber 126c, between the last plate 124 and the penultimate plate 124 of the stack of plates 124 constituting the exchanger of heat 100.
  • FIGS. 6 and 7 are partial schematic views of respective embodiments of the heat exchanger 100 according to the present invention.
  • the channel of inlet circulation 128a and the outlet circulation channel 128b of the second fluid are made through the insert 127 housed inside the end chamber 126c, between the last plate 124 and the front-end. last plate 124 of the stack of plates 124 constituting the heat exchanger 100.
  • the insert 127 is formed of a single blade 132.
  • the blade 132 is made from a strip, for example metal, stamped.
  • the blade 132 has a bottom wall 132a and a contour 132b.
  • the bottom wall 132a and the contour 132b are interconnected by a side wall 132c.
  • the bottom wall 132a is in contact with the penultimate plate 124 of the stack of plates 124 and the contour 132b. is in contact with the last plate 124 of the stack of plates 124.
  • the insert 127 is assembled to the last plate 124 and the penultimate plate 124 of the stack of plates 124, preferably by brazing or the like.
  • the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are delimited by the insert 127 and the last plate 124.
  • the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are made through the insert 127 housed inside the end chamber 126c between the last plate 124 and the penultimate plate 124 of the stack of plates 124 constituting the heat exchanger 100.
  • the insert 127 is formed by an assembly between them of two blades 133.
  • Each blade 133 is made from a strip, for example metal, stamped.
  • each blade 133 has a bottom wall 133a and a contour 133b interconnected by a side wall 133c.
  • the two blades 133 are assembled together so that their respective contours 133b are in contact.
  • the bottom wall 133a of one of the blades 133 is in contact with the penultimate plate 124 of the stack of plates 124 while the bottom wall 133a of the other blade 133 is in contact with the last plate 124 of the stack of plates 124 .
  • the insert 127 is assembled to the last plate 124 and the penultimate plate 124 of the stack of plates 124, preferably by brazing or the like.
  • the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are delimited by the insert 127, in an interior space between the two blades 133.
  • the blade 133 in contact with the last plate 124 has circulation openings 134 cooperating respectively with the inlet of the second fluid 121 and the outlet of the second fluid 122.
  • each blade 133 is formed of a strip, for example metal, assembled, in particular by brazing or the like, on the last plate 124 and the penultimate plate 124.
  • FIGS 8a and 8b are schematic views of two embodiments of the insert 127 according to the present invention.
  • the insert 127 consists of two distribution compartments 135a and 135b disjoint.
  • the two distribution compartments 135a and 135b are identical.
  • the two distribution compartments 135a and 135b are arranged in point symmetry with respect to one another. Accordingly, the two distribution compartments 135a and 135b respectively define the input circulation channel 128a and the output circulation channel 128b.
  • insert 127 consists of a dispensing device 136, consisting of a single piece, comprising two distribution chambers 136a and 136b.
  • the two distribution chambers 136a and 136b are identical.
  • the two distribution chambers 136a and 136b are arranged in point symmetry with respect to each other.
  • constituent walls of the insert 127 advantageously extend, respectively, in the first direction and the second direction, as shown on the figure 8a .
  • at least one of the constituent walls of the insert 127 may form an angle with the first direction and / or the second direction, as presented on the figure 8b .
  • Such particular arrangements make it possible to locate the inlet of the second fluid 121 and the outlet of the second fluid 122 in an optimal configuration.
  • FIGS 9a to 9c are schematic views of the last plate 24 of the heat exchanger 100 according to respective integration variants in the air conditioning loop 2 of the air conditioning system 1.
  • the last plate 124 is provided with a connecting element 140 for connecting the heat exchanger 100 to the other components of the air conditioning loop 2 and / or the secondary loop 18 of the air conditioning system 1.
  • the connecting element 140 is the expansion member 5 of the air conditioning loop 2 or any other constituent component of the air conditioning loop 2 and / or the secondary loop 18.
  • the connecting element 140 comprises an inlet opening 141 and an outlet opening 142 of the second fluid which are, respectively, in fluidic relation with the inlet of the second fluid 121 and the outlet of the second fluid 122.
  • the connecting member 140 has a major axis A passing through the centers of the inlet opening 141 and the discharge opening 142.
  • the connecting element 140 is positioned so that the major axis A forms a given angle with the first median axis x, between 0 ° and 90 °, for example of the order of 45 °.
  • the angle is 0 °
  • the angle is equal to 90 °
  • the angle is equal to 45 °.

Description

L'invention est du domaine des systèmes de chauffage, ventilation et/ou climatisation équipant un véhicule automobile. Elle a pour objet un échangeur de chaleur intégré à une boucle de climatisation et/ou à une boucle secondaire d'un tel système de chauffage, ventilation et/ou climatisation. Elle a aussi pour objet une boucle de climatisation équipée d'un tel échangeur de chaleur. Un échangeur selon le préambule de la revendication 1 est connu du US 5964283 .The invention is in the field of heating, ventilation and / or air conditioning systems equipping a motor vehicle. It relates to a heat exchanger integrated in an air conditioning loop and / or a secondary loop of such a heating, ventilation and / or air conditioning system. It also relates to an air conditioning loop equipped with such a heat exchanger. An exchanger according to the preamble of claim 1 is known from US 5964283 .

Un échangeur de chaleur comprend un faisceau de tubes formé par un empilement de premiers tubes pour la circulation d'un premier fluide. Entre deux premiers tubes adjacents, est créé un passage pour la circulation d'un second fluide.A heat exchanger comprises a bundle of tubes formed by a stack of first tubes for the circulation of a first fluid. Between two first adjacent tubes, is created a passage for the circulation of a second fluid.

Un tel échangeur de chaleur est pourvu d'orifices d'entrée et de sortie du premier fluide afin d'assurer une circulation du premier fluide dans l'échangeur de chaleur. De plus, l'échangeur de chaleur est également pourvu d'orifices d'entrée et de sortie du deuxième fluide afin d'assurer une circulation du deuxième fluide dans l'échangeur de chaleur.Such a heat exchanger is provided with inlet and outlet orifices of the first fluid to ensure a circulation of the first fluid in the heat exchanger. In addition, the heat exchanger is also provided with inlet and outlet ports of the second fluid to ensure a circulation of the second fluid in the heat exchanger.

Il est connu d'employer un tel échangeur de chaleur afin de permettre un échange de chaleur entre un fluide réfrigérant dans deux états thermodynamiques différents. Il est également connu d'employer un tel échangeur de chaleur afin de permettre un échange de chaleur entre un fluide réfrigérant et/ou un fluide caloporteur et/ou un flux d'air.It is known to use such a heat exchanger to allow a heat exchange between a refrigerant fluid in two different thermodynamic states. It is also known to use such a heat exchanger to allow a heat exchange between a refrigerant and / or a heat transfer fluid and / or an air flow.

Plus particulièrement, les orifices d'entrée et de sortie du premier fluide et du deuxième fluide sont agencés sur une face d'extrémité de l'échangeur de chaleur. Elles sont généralement agencées à proximité de coins respectifs de la face d'extrémité. Un tel échangeur de chaleur est notamment connu du document FR 2 891 615 .More particularly, the inlet and outlet ports of the first fluid and the second fluid are arranged on an end face of the heat exchanger. They are generally arranged near respective corners of the end face. Such a heat exchanger is particularly known from the document FR 2 891 615 .

Ainsi agencées, l'entrée et la sortie d'un même fluide sont espacées l'une de l'autre. Il est donc nécessaire d'agencer un ensemble de tubulures permettant de relier l'échangeur de chaleur à la boucle de climatisation et/ou à la boucle secondaire du système de chauffage, ventilation et/ou climatisation. Ceci augmente l'encombrement général et nuit à une compacité du système de chauffage, ventilation et/ou climatisation.Thus arranged, the inlet and the outlet of the same fluid are spaced apart from each other. It is therefore necessary to arrange a set of pipes for connecting the heat exchanger to the air conditioning loop and / or the secondary loop of the heating, ventilation and / or air conditioning system. This increases the overall size and impairs the compactness of the heating, ventilation and / or air conditioning system.

De plus, pour améliorer l'efficacité du transfert thermique de l'échangeur de chaleur, il est nécessaire d'augmenter les surfaces d'échange entre le premier fluide et le deuxième fluide. Ceci requiert, notamment, des dimensions particulières adaptées de l'échangeur de chaleur. En conséquènce, les échangeurs de chaleur de l'art antérieur présentent des orifices d'entrée et de sortie d'un même fluide qui sont espacées l'une de l'autre d'une distance importante.In addition, to improve the heat transfer efficiency of the heat exchanger, it is necessary to increase the exchange surfaces between the first fluid and the second fluid. This requires, in particular, particular dimensions adapted to the heat exchanger. Consequently, the heat exchangers of the prior art have inlet and outlet ports of the same fluid which are spaced from each other by a significant distance.

Un tel positionnement des orifices d'entrée et de sortie des fluides constitue une contrainte pour l'intégration de l'échangeur de chaleur dans un système de climatisation équipant un véhicule automobile, en particulier dans une boucle de climatisation, à l'intérieur de laquelle circule un fluide réfrigérant, tel que ceux connus sous l'appellation R744, R134a ou analogue, ou dans une boucle secondaire à l'intérieur de laquelle circule un fluide caloporteur, tel qu'un mélange d'eau et de glycol ou analogue.Such positioning of the fluid inlet and outlet ports constitutes a constraint for the integration of the heat exchanger in an air-conditioning system fitted to a motor vehicle, in particular in an air-conditioning loop, inside which circulates a refrigerant, such as those known under the name R744, R134a or the like, or in a secondary loop inside which circulates a coolant, such as a mixture of water and glycol or the like.

Plus particulièrement, le raccordement d'un tel échangeur de chaleur dans la boucle de climatisation et/ou dans la boucle secondaire nécessite fréquemment des tubulures présentant une configuration complexe qui sont sources de pertes de charge.More particularly, the connection of such a heat exchanger in the air conditioning loop and / or in the secondary loop frequently requires pipes having a complex configuration which are sources of pressure losses.

De plus, le raccordement d'un composant additionnel à l'échangeur de chaleur est difficile. Notamment, un tel composant additionnel, en particulier un organe de détente ou analogue, comporte les orifices d'entrée et de sortie présentant un entraxe réduit. Il est donc nécessaire de définir un parcours compliqué des tubulures pour relier les orifices d'entrée et de sortie de l'échangeur de chaleur et les orifices d'entrée et de sortie du composant additionnel. Alternativement, il est nécessaire de disposer une pièce de raccordement complémentaire. L'ensemble de ces solutions augmente les coûts de fabrication, l'encombrement et le poids d'un système de chauffage, ventilation et/ou climatisation.In addition, the connection of an additional component to the heat exchanger is difficult. In particular, such an additional component, in particular an expansion member or the like, comprises the inlet and outlet orifices having a reduced spacing. It is therefore necessary to define a complicated path of tubing to connect the inlet and outlet ports of the heat exchanger and the inlet and outlet ports of the additional component. Alternatively, it is necessary to have a complementary connecting piece. All of these solutions increase the manufacturing costs, the size and weight of a heating, ventilation and / or air conditioning system.

Le but de la présente invention est de proposer un échangeur de chaleur assurant un transfert thermique efficace entre un premier fluide et un deuxième fluide, l'échangeur de chaleur offrant des modalités de raccordement à une boucle de climatisation et/ou une boucle secondaire d'un système de chauffage, ventilation et/ou climatisation équipant un véhicule automobile, qui soient simples, aisées, flexibles et optimisées pour notamment permettre un raccordement d'un composant additionnel comportant un entraxe relativement quelconque.The object of the present invention is to provide a heat exchanger ensuring an efficient heat transfer between a first fluid and a second fluid, the heat exchanger providing connection to an air conditioning loop and / or a secondary loop of a heating, ventilation and / or air conditioning system equipping a motor vehicle, which are simple, easy, flexible and optimized to include allowing connection of an additional component having a relatively arbitrary distance.

Un tel échangeur de chaleur assurant un transfert thermique entre un premier fluide et un deuxième fluide comporte un empilement de plaques comprenant une dernière plaque et une avant-dernière plaque délimitant conjointement une chambre d'extrémité, la dernière plaque étant pourvue d'au moins une entrée du deuxième fluide et une sortie du deuxième fluide, l'empilement de plaques définissant un passage d'entrée du deuxième fluide et un passage de sortie du deuxième fluide.Such a heat exchanger providing thermal transfer between a first fluid and a second fluid comprises a stack of plates comprising a last plate and a penultimate plate jointly defining an end chamber, the last plate being provided with at least one inlet of the second fluid and an outlet of the second fluid, the stack of plates defining an inlet passage of the second fluid and an outlet passage of the second fluid.

La chambre d'extrémité loge un moyen de canalisation comportant un canal de circulation d'entrée permettant de canaliser le deuxième fluide entre l'entrée du deuxième fluide et le passage d'entrée du deuxième fluide et un canal de circulation de sortie permettant de canaliser le deuxième fluide entre la sortie du deuxième fluide et le passage de sortie du deuxième fluide.The end chamber houses a conduit means having an inlet flow channel for channeling the second fluid between the inlet of the second fluid and the inlet passage of the second fluid and an outlet circulation channel for channeling the second fluid between the outlet of the second fluid and the outlet passage of the second fluid.

Selon l'invention, le moyen de canalisation est constitué par un insert logé dans la chambre d'extrémité. L'insert est formée par au moins une lame. La lame comporte une paroi de fond et un contour reliés entre eux par une paroi latérale.According to the invention, the channeling means is constituted by an insert housed in the end chamber. The insert is formed by at least one blade. The blade has a bottom wall and a contour interconnected by a side wall.

Préférentiellement, la paroi de fond est en contact avec l'avant-dernière plaque de l'empilement de plaques et le contour est en contact avec la dernière plaque de l'empilement de plaques. Ainsi, le canal de circulation d'entrée et le canal de circulation de sortie du deuxième fluide sont délimités par l'insert et la dernière plaque.Preferably, the bottom wall is in contact with the penultimate plate of the stack of plates and the contour is in contact with the last plate of the stack of plates. Thus, the inlet circulation channel and the outlet circulation channel of the second fluid are delimited by the insert and the last plate.

Selon une autre alternative, l'insert est formé par deux lames assemblées entre elles. Selon cet agencement, la paroi de fond d'une des lames est en contact avec l'avant-dernière plaque de l'empilement de plaques, la paroi de fond de l'autre des lames est en contact avec la dernière plaque de l'empilement de plaques et les contours respectifs des lames est en contact mutuel.According to another alternative, the insert is formed by two blades assembled together. According to this arrangement, the bottom wall of one of the blades is in contact with the penultimate plate of the stack of plates, the bottom wall of the other of the blades is in contact with the last plate of the stack of plates and the respective contours of the blades is in mutual contact.

En particulier, selon les diverses alternatives de réalisation, l'insert est constitué deux compartiments de distribution disjoints. Avantageusement, les deux compartiments de distribution sont identiques.In particular, according to the various alternative embodiments, the insert consists of two disjoint distribution compartments. Advantageously, the two distribution compartments are identical.

D'autre part, l'insert est constitué d'un dispositif de distribution, formé d'une pièce unique, comprenant deux chambres de distribution. Préférentiellement, les deux chambres de distribution sont agencées selon une symétrie ponctuelle l'une par rapport à l'autre.On the other hand, the insert consists of a distribution device, formed of a single piece, comprising two distribution chambers. Preferably, the two distribution chambers are arranged in a point symmetry with respect to each other.

De plus, selon la présente invention, le canal de circulation d'entrée et le canal de circulation de sortie du deuxième fluide sont orthogonaux au passage d'entrée du deuxième fluide et au passage de sortie du deuxième fluide.In addition, according to the present invention, the inlet circulation channel and the outlet circulation channel of the second fluid are orthogonal to the inlet passage of the second fluid and the outlet passage of the second fluid.

Par ailleurs, l'entrée du deuxième fluide et la sortie du deuxième fluide sont agencées dans une zone centrale de la dernière plaque de l'empilement de plaques.Moreover, the inlet of the second fluid and the outlet of the second fluid are arranged in a central zone of the last plate of the stack of plates.

Une boucle de climatisation selon la présente invention comprend un échangeur de chaleur tel que précédemment défini. A cet effet, la boucle de climatisation comprend un élément de raccordement comportant une ouverture d'admission et une ouverture d'évacuation du deuxième fluide et un grand axe passant par les centres de l'ouverture d'admission et de l'ouverture d'évacuation. De plus, le grand axe forme un angle compris entre 0° et 90° avec un premier axe médian de la dernière plaque l'empilement de plaques.An air conditioning loop according to the present invention comprises a heat exchanger as previously defined. For this purpose, the air conditioning loop comprises a connecting element comprising an inlet opening and an outlet opening for the second fluid and a major axis passing through the centers of the intake opening and the opening of the evacuation. In addition, the major axis forms an angle between 0 ° and 90 ° with a first central axis of the last plate stack of plates.

D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description qui va suivre en regard des figures annexées, données à titre d'exemples non limitatifs, qui pourront servir à compléter la compréhension de la présente invention et l'exposé de sa réalisation, mais aussi, le cas échéant, contribuer à sa définition sur lesquels :

  • les figures 1 et 2 sont des vues schématiques de systèmes de chauffage, ventilation et/ou climatisation intégrant un échangeur de chaleur selon la présente invention,
  • la figure 3 est une vue en perspective d'un échangeur de chaleur selon la présente invention,
  • la figure 4 est une vue partiellement éclatée de l'échangeur de chaleur de la figure 3,
  • la figure 5 est une vue éclatée de l'échangeur de chaleur des figures 3 et 4,
  • les figures 6 et 7 sont des vues schématiques partielles de variantes respectives de réalisation de l'échangeur de chaleur représenté sur la figure 3,
  • les figures 8a et 8b sont des vues schématiques de deux modes de réalisation d'un insert selon la présente invention, et
  • les figures 9a à 9c sont des vues schématiques d'une dernière plaque de l'échangeur de chaleur selon des variantes d'intégration respectives dans une boucle de climatisation selon la présente invention.
Other features and advantages of the invention will emerge on examining the following description with reference to the appended figures, given by way of non-limiting examples, which may serve to complete the understanding of the present invention and the statement of its realization, but also, if necessary, contribute to its definition on which:
  • the Figures 1 and 2 are schematic views of heating, ventilation and / or air conditioning systems incorporating a heat exchanger according to the present invention,
  • the figure 3 is a perspective view of a heat exchanger according to the present invention,
  • the figure 4 is a partially exploded view of the heat exchanger of the figure 3 ,
  • the figure 5 is an exploded view of the heat exchanger of the figures 3 and 4 ,
  • the Figures 6 and 7 are partial schematic views of respective embodiments of the heat exchanger shown in FIG. figure 3 ,
  • the Figures 8a and 8b are schematic views of two embodiments of an insert according to the present invention, and
  • the Figures 9a to 9c are schematic views of a last plate of the heat exchanger according to respective integration variants in an air conditioning loop according to the present invention.

Les figures 1 et 2 sont des vues schématiques d'un système de chauffage, ventilation et/ou climatisation 1 intégrant un échangeur de chaleur selon la présente invention. Le système de chauffage, ventilation et/ou climatisation 1, présenté sur les figures 1 et 2, est prévu pour équiper un véhicule automobile en vue de modifier les paramètres aérothermiques d'un flux d'air intérieur 8 destiné à être distribué à l'intérieur d'un habitacle du véhicule automobile.The Figures 1 and 2 are schematic views of a heating, ventilation and / or air conditioning system 1 incorporating a heat exchanger according to the present invention. The heating, ventilation and / or air conditioning system 1, presented on Figures 1 and 2 , is intended to equip a motor vehicle to change the aerothermal parameters of an interior air flow 8 to be distributed inside a passenger compartment of the motor vehicle.

A cet effet, le système de chauffage, ventilation et/ou climatisation 1 comprend une boucle de climatisation 2 à l'intérieur de laquelle circule un fluide réfrigérant, tel que l'un de ceux connus sous l'appellation R744, R134a ou analogue.For this purpose, the heating, ventilation and / or air conditioning system 1 comprises an air conditioning loop 2 inside which circulates a refrigerant, such as one of those known under the name R744, R134a or the like.

La boucle de climatisation 2 comprend un compresseur 3, apte à comprimer le fluide réfrigérant, un premier échangeur de chaleur 4, notamment un échangeur de chaleur air / fluide réfrigérant 4, apte à fonctionner en tant que condenseur 4 et traversé par un flux d'air extérieur, un organe de détente 5, apte à détendre le fluide réfrigérant, et un accumulateur 6, apte à créer une zone de stockage du fluide réfrigérant et empêcher une admission de fluide réfrigérant à l'état liquide à l'intérieur du compresseur 3.The air conditioning loop 2 comprises a compressor 3, able to compress the refrigerant fluid, a first heat exchanger 4, in particular an air / refrigerant heat exchanger 4, able to function as a condenser 4 and traversed by a flow of outside air, an expansion member 5, able to relax the cooling fluid, and an accumulator 6, able to create a refrigerant storage zone and prevent an intake of coolant in the liquid state inside the compressor 3 .

La figure 1 illustre une première variante de réalisation du système de chauffage, ventilation et/ou climatisation 1. Selon la première variante de réalisation, la boucle de climatisation 2 comprend un deuxième échangeur de chaleur 7, apte à fonctionner en tant qu'évaporateur 7, traversé par le flux d'air intérieur 8. A la traversée du deuxième échangeur de chaleur 7, le flux d'air intérieur 8 est apte à se refroidir et/ou à se déshumidifier, préalablement à sa diffusion à l'intérieur de l'habitacle.The figure 1 illustrates a first embodiment of the heating, ventilation and / or air-conditioning system 1. According to the first embodiment variant, the air conditioning loop 2 comprises a second heat exchanger 7, able to function as an evaporator 7, traversed by the internal air flow 8. At the crossing of the second heat exchanger 7, the inner air flow 8 is able to cool and / or to dehumidify, prior to its diffusion inside the passenger compartment.

De plus, la boucle de climatisation 2 comprend également un échangeur de chaleur interne 9 prévu pour permettre un transfert thermique entre le fluide réfrigérant présent à l'intérieur d'un canal de circulation haute pression 10 de l'échangeur de chaleur interne 9 et le fluide réfrigérant présent à l'intérieur d'un canal de circulation basse pression 11 de l'échangeur de chaleur interne 9.In addition, the air conditioning loop 2 also comprises an internal heat exchanger 9 provided to allow heat transfer between the refrigerant fluid inside a high pressure circulation channel 10 of the internal heat exchanger 9 and the refrigerant present inside a low pressure circulation channel 11 of the internal heat exchanger 9.

Le canal de circulation haute pression 10 s'étend entre une entrée haute pression 12 et une sortie haute pression 13 de l'échangeur de chaleur interne 9. Le canal de circulation basse pression 11 s'étend entre une entrée basse pression 14 et une sortie basse pression 15 de l'échangeur de chaleur interne 9.The high pressure circulation channel 10 extends between a high pressure inlet 12 and a high pressure outlet 13 of the internal heat exchanger 9. The low pressure circulation channel 11 extends between a low pressure inlet 14 and an outlet low pressure 15 of the internal heat exchanger 9.

Ainsi, selon un sens de circulation 16 du fluide réfrigérant à l'intérieur de la boucle de climatisation 2, le fluide réfrigérant circule successivement dans le compresseur 3, le premier échangeur de chaleur 4, le canal de circulation haute pression 10 de l'échangeur de chaleur interne 9, l'organe de détente 5, le deuxième échangeur de chaleur 7, l'accumulateur 6, le canal de circulation basse pression 11 de l'échangeur de chaleur interne 9 et le compresseur 3.Thus, according to a direction of circulation 16 of the refrigerant inside the air conditioning loop 2, the refrigerant circulates successively in the compressor 3, the first heat exchanger 4, the high pressure circulation channel 10 of the exchanger internal heat exchanger 9, the expansion element 5, the second heat exchanger 7, the accumulator 6, the low-pressure circulation channel 11 of the internal heat exchanger 9 and the compressor 3.

La figure 2 illustre une deuxième variante de réalisation du système de chauffage, ventilation et/ou climatisation 1. Selon la deuxième variante de réalisation, le système de chauffage, ventilation et/ou climatisation 1 comprend un échangeur de chaleur fluide réfrigérant / fluide caloporteur 17 prévu pour permettre un transfert thermique entre le fluide réfrigérant circulant à l'intérieur de la boucle de climatisation 2 et un fluide caloporteur circulant à l'intérieur d'une boucle secondaire 18. Le fluide caloporteur est, par exemple, constitué d'un mélange d'eau et de glycol.The figure 2 illustrates a second alternative embodiment of the heating, ventilation and / or air conditioning system 1. According to the second embodiment, the heating, ventilation and / or air conditioning system 1 comprises a refrigerant / heat transfer fluid heat exchanger 17 provided to allow a heat transfer between the refrigerant circulating inside the air conditioning loop 2 and a coolant circulating inside a secondary loop 18. The coolant is, for example, consisting of a mixture of water and glycol.

A cet effet, l'échangeur de chaleur fluide réfrigérant / fluide caloporteur 17 est agencé dans la boucle de climatisation 2 et dans la boucle secondaire 18.For this purpose, the refrigerant / heat transfer fluid heat exchanger 17 is arranged in the air conditioning loop 2 and in the secondary loop 18.

L'échangeur de chaleur fluide réfrigérant / fluide caloporteur 17 comprend un canal de circulation de fluide réfrigérant 19 qui s'étend entre une entrée de fluide réfrigérant 20 et une sortie de fluide réfrigérant 21. L'échangeur de chaleur fluide réfrigérant / fluide caloporteur 17 comprend également un canal de circulation de fluide caloporteur 22 qui s'étend entre une entrée de fluide caloporteur 23 et une sortie de fluide caloporteur 24.The refrigerant / heat transfer fluid heat exchanger 17 comprises a refrigerant circulation channel 19 which extends between a fluid inlet refrigerant 20 and a refrigerant output 21. The refrigerant / heat transfer fluid heat exchanger 17 also comprises a heat transfer fluid circulation channel 22 which extends between a heat transfer fluid inlet 23 and a heat transfer fluid outlet 24.

De plus, la boucle secondaire 18 comprend une pompe 25, destinée à mettre en circulation le fluide caloporteur, et un troisième échangeur de chaleur 26, ou aérotherme 26, traversé par le flux d'air intérieur 8 préalablement à sa distribution à l'intérieur de l'habitacle du véhicule automobile.In addition, the secondary loop 18 comprises a pump 25, intended to circulate the coolant, and a third heat exchanger 26, or heater 26, through which the inner air flow 8 prior to its distribution inside. of the passenger compartment of the motor vehicle.

Ainsi, selon un sens d'écoulement 27 du fluide caloporteur à l'intérieur de la boucle secondaire 18, le fluide caloporteur circule successivement dans la pompe 25, l'échangeur de chaleur fluide réfrigérant / fluide caloporteur 17, le canal de circulation de fluide caloporteur 22, puis à travers le troisième échangeur de chaleur 26 et la pompe 25.Thus, according to a direction of flow 27 of the coolant inside the secondary loop 18, the heat transfer fluid circulates successively in the pump 25, the refrigerant fluid heat exchanger / coolant 17, the fluid circulation channel coolant 22, then through the third heat exchanger 26 and the pump 25.

Indépendamment, le fluide réfrigérant circule, à l'intérieur de la boucle de climatisation 2 selon le sens de circulation 16 du fluide réfrigérant, successivement dans le compresseur 3, le premier échangeur de chaleur 4, l'organe de détente 5, le canal de circulation de fluide réfrigérant 19, l'accumulateur 6 et le compresseur 3.Independently, the coolant circulates, inside the air conditioning loop 2 in the direction of circulation 16 of the refrigerant, successively in the compressor 3, the first heat exchanger 4, the expansion member 5, the channel refrigerant circulation 19, the accumulator 6 and the compressor 3.

Selon d'autres variantes non représentées, l'échangeur de chaleur fluide réfrigérant / fluide caloporteur 17 est susceptible d'être agencé en d'autres positions dans la boucle de climatisation 2.According to other variants not shown, the refrigerant / heat transfer fluid heat exchanger 17 may be arranged in other positions in the air conditioning loop 2.

De plus, selon un autre mode de réalisation non représenté, le système de chauffage, ventilation et/ou climatisation 1 comprend un échangeur de chaleur interne 9, selon une configuration telle que décrite à la figure 1, et un échangeur de chaleur fluide réfrigérant / fluide caloporteur 17, selon une configuration telle que décrite à la figure 2.In addition, according to another embodiment not shown, the heating, ventilation and / or air conditioning system 1 comprises an internal heat exchanger 9, in a configuration as described in FIG. figure 1 , and a refrigerant / heat transfer fluid heat exchanger 17, in a configuration as described in FIG. figure 2 .

La figure 3 est une vue en perspective de l'échangeur d'un échangeur chaleur 110 selon la présente invention. L'échangeur de chaleur 100 est apte à assurer indifféremment la fonction d'échangeur de chaleur interne 9, dans la configuration illustrée sur la figure 1, ou d'échangeur de chaleur fluide réfrigérant / fluide caloporteur 17, dans la configuration illustrée sur la figure 2.The figure 3 is a perspective view of the exchanger of a heat exchanger 110 according to the present invention. The heat exchanger 100 is able to ensure indifferently the function of internal heat exchanger 9, in the configuration illustrated in FIG. figure 1 , or of a refrigerant / heat transfer fluid heat exchanger 17, in the configuration illustrated in FIG. figure 2 .

Autrement dit, l'échangeur de chaleur 100 est à même de permettre un transfert thermique entre un premier fluide, tel qu'un fluide réfrigérant à basse ou haute pression, et un deuxième fluide, tel que le fluide réfrigérant à basse ou haute pression, ou le fluide caloporteur.In other words, the heat exchanger 100 is able to allow a heat transfer between a first fluid, such as a refrigerant fluid at low or high pressure, and a second fluid, such as the refrigerant fluid at low or high pressure, or the coolant.

L'échangeur de chaleur 100 comprend un canal de circulation du premier fluide 110 qui s'étend entre une entrée du premier fluide 111 et une sortie du premier fluide 112. L'échangeur de chaleur 100 comprend également un canal de circulation du deuxième fluide 120 qui s'étend entre une entrée du deuxième fluide 121 et une sortie du deuxième fluide 122.The heat exchanger 100 comprises a circulation channel of the first fluid 110 which extends between an inlet of the first fluid 111 and an outlet of the first fluid 112. The heat exchanger 100 also comprises a circulation channel of the second fluid 120 which extends between an inlet of the second fluid 121 and an outlet of the second fluid 122.

Selon la première variante de réalisation du système de chauffage, ventilation et/ou climatisation 1 illustrée sur la figure 1, le premier fluide est constitué du fluide réfrigérant à haute pression et le deuxième fluide est constitué du fluide réfrigérant à basse pression.According to the first embodiment of the heating, ventilation and / or air conditioning system 1 illustrated on the figure 1 the first fluid consists of the high pressure refrigerant and the second fluid is the low pressure refrigerant.

Dans ce cas, le canal de circulation du premier fluide 110 est constitué du canal de circulation haute pression 10, l'entrée du premier fluide 111 correspondant à l'entrée haute pression 12 et la sortie du premier fluide 112 correspondant à la sortie haute pression 13. De même, le canal de circulation du deuxième fluide 120 est constitué du canal de circulation basse pression 11, l'entrée du deuxième fluide 121 correspondant à l'entrée basse pression 14 et la sortie du deuxième fluide 122 correspondant à la sortie basse pression 15.In this case, the circulation channel of the first fluid 110 consists of the high pressure circulation channel 10, the inlet of the first fluid 111 corresponding to the high pressure inlet 12 and the outlet of the first fluid 112 corresponding to the high pressure outlet 13. Similarly, the circulation channel of the second fluid 120 is constituted by the low pressure circulation channel 11, the inlet of the second fluid 121 corresponding to the low pressure inlet 14 and the outlet of the second fluid 122 corresponding to the low outlet pressure 15.

Selon une autre variante, le premier fluide est constitué du fluide réfrigérant à basse pression et le deuxième fluide est constitué du fluide réfrigérant à haute pression. Les dispositions citées précédemment sont alors inversées.According to another variant, the first fluid consists of the refrigerant fluid at low pressure and the second fluid consists of the high pressure refrigerant fluid. The provisions cited above are then reversed.

Par ailleurs, selon la deuxième variante de réalisation du système de chauffage, ventilation et/ou climatisation 1 illustrée sur la figure 2, le premier fluide est constitué du fluide réfrigérant et le deuxième fluide est constitué du fluide caloporteur.Moreover, according to the second variant embodiment of the heating, ventilation and / or air conditioning system 1 illustrated on FIG. figure 2 the first fluid consists of the refrigerant fluid and the second fluid is the heat transfer fluid.

Dans ce cas, le canal de circulation du premier fluide 110 est constitué du canal de circulation de fluide réfrigérant 19, l'entrée du premier fluide 111 correspondant à l'entrée de fluide réfrigérant 20 et la sortie du premier fluide 112 correspondant à la sortie de fluide réfrigérant 21. De même, le canal de circulation du deuxième fluide 120 est constitué du canal de circulation de fluide caloporteur 22, l'entrée du deuxième fluide 121 correspondant à l'entrée de fluide caloporteur 23 et la sortie du deuxième fluide 122 correspondant à la sortie de fluide caloporteur 24.In this case, the flow channel of the first fluid 110 is constituted by the refrigerant circulation channel 19, the inlet of the first fluid 111 corresponding to the refrigerant inlet 20 and the outlet of the first fluid 112 corresponding to the outlet Similarly, the circulation channel of the second fluid 120 is constituted by the coolant circulation channel 22, the inlet of the second fluid 121 corresponding to the coolant inlet 23 and the outlet of the second fluid 122. corresponding to the heat transfer fluid outlet 24.

Selon une autre variante, le premier fluide est constitué du fluide caloporteur et le deuxième fluide est constitué du fluide réfrigérant. Les dispositions citées précédemment sont inversées.According to another variant, the first fluid consists of the coolant and the second fluid consists of the coolant. The provisions cited above are reversed.

L'échangeur de chaleur 100 comporte une face d'extrémité 123 sur laquelle sont agencées l'entrée du premier fluide 111, la sortie du premier fluide 112, l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122. Le premier fluide et le deuxième fluide pénètrent dans l'échangeur de chaleur 100 et sont évacués hors de l'échangeur de chaleur 100 au niveau de la face d'extrémité 123.The heat exchanger 100 comprises an end face 123 on which are arranged the inlet of the first fluid 111, the outlet of the first fluid 112, the inlet of the second fluid 121 and the outlet of the second fluid 122. The first fluid and the second fluid enters the heat exchanger 100 and is discharged out of the heat exchanger 100 at the end face 123.

Selon d'autres variantes de réalisation non représentées, la face d'extrémité 123 est susceptible d'être pourvue uniquement de l'entrée du premier fluide 111 et de la sortie du premier fluide 112, ou alternativement de l'entrée du deuxième fluide 121 et de la sortie du deuxième fluide 122.According to other embodiments not shown, the end face 123 may be provided only with the inlet of the first fluid 111 and the outlet of the first fluid 112, or alternatively the inlet of the second fluid 121 and the output of the second fluid 122.

Ainsi agencé, l'échangeur de chaleur 100 selon la présente invention est un échangeur de chaleur comportant un canal de circulation du premier fluide 110 et/ou un canal de circulation du deuxième fluide 120 qui est indifféremment agencé en « I », en « U » ou tout autre agencement, étant considéré que l'échangeur de chaleur 100 selon la présente invention comporte conjointement une entrée et une sortie d'au moins un même fluide sur la face d'extrémité 123.Thus arranged, the heat exchanger 100 according to the present invention is a heat exchanger comprising a circulation channel of the first fluid 110 and / or a circulation channel of the second fluid 120 which is indifferently arranged in "I", "U" Or any other arrangement, being considered that the heat exchanger 100 according to the present invention jointly comprises an inlet and an outlet of at least one same fluid on the end face 123.

Selon l'exemple présenté, l'échangeur de chaleur 100 est de forme globalement parallélépipédique. Toutefois, l'échangeur de chaleur 100 est susceptible de prendre d'autres formes.According to the example presented, the heat exchanger 100 is of generally parallelepipedal shape. However, the heat exchanger 100 is likely to take other forms.

L'échangeur de chaleur 100 est, préférentiellement, un échangeur de chaleur à plaques principalement constitué d'un empilement de plaques 124. Selon l'exemple de réalisation, les plaques 124 sont de conformations sensiblement planes et rectangulaires et présentent une profondeur P, selon une première direction, et une largeur L, selon une deuxième direction. Avantageusement, la première direction est perpendiculaire à la deuxième direction. Les plaques 124 présentent de plus des parties de profondeurs différentes, notamment obtenues par emboutissage.The heat exchanger 100 is preferably a plate heat exchanger consisting mainly of a stack of plates 124. According to the exemplary embodiment, the plates 124 are of substantially planar and rectangular conformations and have a depth P, according to the invention. a first direction, and a width L, in a second direction. Advantageously, the first direction is perpendicular to the second direction. The plates 124 also have parts of different depths, especially obtained by stamping.

Les figures 4 et 5 sont, respectivement, une vue partiellement éclatée et une vue éclatée de l'échangeur de chaleur 110 de la figure 3. L'échangeur de chaleur 110 est constitué par un empilement de plaques 124.The figures 4 and 5 are, respectively, a partially exploded view and an exploded view of the heat exchanger 110 of the figure 3 . The heat exchanger 110 is constituted by a stack of plates 124.

Deux plaques 124 contigües sont solidarisées l'une à l'autre par l'intermédiaire de leur bord périphérique 125 afin de former les tubes de circulation du premier fluide et du deuxième fluide.Two contiguous plates 124 are secured to one another via their peripheral edge 125 to form the circulation tubes of the first fluid and the second fluid.

Par empilement de plusieurs tubes formés de deux plaques 124 assemblées, il est défini une première chambre de circulation 126a du premier fluide et une deuxième chambre de circulation 126b du deuxième fluide, telles que présentées sur la figure 5. Ainsi agencé, l'échangeur de chaleur 100 comprend une pluralité de premières chambres de circulation du premier fluide 126a et une pluralité de deuxièmes chambres de circulation du deuxième fluide 126b, ménagées en alternance les unes aux autres.By stacking a plurality of tubes formed of two assembled plates 124, a first flow chamber 126a of the first fluid and a second flow chamber 126b of the second fluid are defined as shown in FIG. figure 5 . Thus arranged, the heat exchanger 100 comprises a plurality first flow chambers of the first fluid 126a and a plurality of second flow chambers of the second fluid 126b, alternately arranged to each other.

Un tel agencement en alternance des premières chambres de circulation du premier fluide 126a et des deuxièmes chambres de circulation du deuxième fluide 126b permet d'optimiser le transfert thermique entre le premier fluide et le deuxième fluide.Such an alternating arrangement of the first flow chambers of the first fluid 126a and the second flow chambers of the second fluid 126b makes it possible to optimize the heat transfer between the first fluid and the second fluid.

Une des plaques 124 de l'échangeur de chaleur 100, dite dernière plaque 124, comporte la face d'extrémité 123. De plus, l'échangeur de chaleur 100 comprend une chambre d'extrémité 126c.délimitées par la dernière plaque 124 et une avant-dernière plaque 124 de l'empilement de plaques 124 constituant l'échangeur de chaleur 100. L'avant-dernière plaque 124 est contiguë à la dernière plaque 124.One of the plates 124 of the heat exchanger 100, called the last plate 124, has the end face 123. In addition, the heat exchanger 100 comprises an end chamber 126c.delimits by the last plate 124 and a penultimate plate 124 of the stack of plates 124 constituting the heat exchanger 100. The penultimate plate 124 is contiguous with the last plate 124.

La chambre d'extrémité 126c est indifféremment une première chambre de circulation 126a du premier fluide ou une deuxième chambre de circulation 126b du deuxième fluide, selon diverses modalités de réalisation de l'échangeur de chaleur 100. Sur l'exemple illustré, la chambre d'extrémité 126c est une deuxième chambre de circulation 126b du deuxième fluide.The end chamber 126c is indifferently a first circulation chamber 126a of the first fluid or a second circulation chamber 126b of the second fluid, according to various embodiments of the heat exchanger 100. In the illustrated example, the chamber end 126c is a second flow chamber 126b of the second fluid.

La présente invention propose avantageusement que la chambre d'extrémité 126c loge au moins un moyen de canalisation 127, notamment un insert 127, permettant de canaliser le deuxième fluide, d'une part, depuis l'entrée du deuxième fluide 121 vers un passage d'entrée de circulation 130 du deuxième fluide ménagée dans l'ensemble de plaques 124, et d'autre part, depuis un passage de sortie de circulation 131 du deuxième fluide ménagé dans l'ensemble de plaques 124 vers la sortie du deuxième fluide 122.The present invention advantageously proposes that the end chamber 126c houses at least one channeling means 127, in particular an insert 127, making it possible to channel the second fluid, on the one hand, from the inlet of the second fluid 121 to a passageway the circulation inlet 130 of the second fluid formed in the plate assembly 124, and secondly, from a circulation outlet passage 131 of the second fluid formed in the plate assembly 124 towards the outlet of the second fluid 122.

En particulier, le moyen de canalisation 127, notamment l'insert 127, comprend un canal de circulation d'entrée 128a permettant de canaliser le deuxième fluide entre l'entrée du deuxième fluide 121 et le passage d'entrée de circulation 130 du deuxième fluide et un canal de circulation d'entrée 128b permettant de canaliser le deuxième fluide entre la sortie du deuxième fluide 122 le passage de sortie de circulation 131 du deuxième fluide.In particular, the channeling means 127, in particular the insert 127, comprises an inlet circulation channel 128a for channeling the second fluid between the inlet of the second fluid 121 and the circulation inlet passage 130 of the second fluid and an inlet flow channel 128b for channeling the second fluid between the outlet of the second fluid 122 the flow outlet passage 131 of the second fluid.

Autrement dit, sur l'exemple illustré, la chambre d'extrémité 126c loge les deux canaux de circulation 128a et 128b du deuxième fluide.In other words, in the example shown, the end chamber 126c houses the two circulation channels 128a and 128b of the second fluid.

Grâce à l'insert 127, l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122 sont susceptibles d'être ménagées en une zone relativement quelconque de la face d'extrémité 123 de l'échangeur de chaleur 100. Notamment, l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122 peuvent être-agencées dans une zone centrale 129 de la dernière plaque 124 de l'empilement de plaques 124.Thanks to the insert 127, the inlet of the second fluid 121 and the outlet of the second fluid 122 may be formed in a relatively arbitrary area of the end face 123 of the heat exchanger 100. the inlet of the second fluid 121 and the outlet of the second fluid 122 may be arranged in a central zone 129 of the last plate 124 of the stack of plates 124.

La zone centrale 129 est définie comme une zone de la face externe 123 de la dernière plaque 124 agencée de part et autre d'un premier axe médian x, selon la première direction, et un deuxième axe médian y, selon la deuxième direction, de la dernière plaque 124. En particulier, la zone centrale 129 est inférieure à 30% de la profondeur P et/ou de la largeur L de la dernière plaque 124.The central zone 129 is defined as a zone of the outer face 123 of the last plate 124 arranged on either side of a first median axis x, in the first direction, and a second median axis y, in the second direction, of the last plate 124. In particular, the central zone 129 is less than 30% of the depth P and / or the width L of the last plate 124.

La présence du canal de circulation d'entrée 128a et du canal de circulation d'entrée 128b du deuxième fluide à l'intérieur de la chambre d'extrémité 126c offre une flexibilité importante pour le positionnement de l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122 à travers la dernière plaque 124.The presence of the inlet flow channel 128a and the inlet flow channel 128b of the second fluid within the end chamber 126c provides significant flexibility for positioning the inlet of the second fluid 121 and the leaving the second fluid 122 through the last plate 124.

Ainsi, le canal de circulation d'entrée 128a du deuxième fluide relie l'entrée du deuxième fluide 121 au passage d'entrée de circulation 130 du deuxième fluide qui s'étend à travers l'ensemble des plaques 124, excepté la dernière plaque 124. Le passage d'entrée de circulation 130 du deuxième fluide relie entre elles les deuxièmes chambres de circulation 126b du deuxième fluide. De même, le canal de circulation de sortie 128b du deuxième fluide relie le passage de sortie de circulation 131 du deuxième fluide, qui s'étend à travers l'ensemble des plaques 124 excepté la dernière plaque 124, à la sortie du deuxième fluide 122. Le passage de sortie de circulation 131 du deuxième fluide relie entre elles les deuxièmes chambres de circulation 126b du deuxième fluide.Thus, the inlet circulation channel 128a of the second fluid connects the inlet of the second fluid 121 to the circulation inlet passage 130 of the second fluid which extends through all of the plates 124, except the last plate 124. The circulation inlet passage 130 of the second fluid interconnects the second circulation chambers 126b of the second fluid. Likewise, the outlet circulation channel 128b of the second fluid connects the circulation outlet passage 131 of the second fluid, which extends through all the plates. 124 except the last plate 124 at the outlet of the second fluid 122. The circulation outlet passage 131 of the second fluid interconnects the second circulation chambers 126b of the second fluid.

De façon préférentielle, le canal de circulation d'entrée 128a du deuxième fluide est orthogonal au passage d'entrée de circulation 130 du deuxième fluide et le canal de circulation de sortie 128b du deuxième fluide est orthogonal au passage de sortie de circulation 131 du deuxième fluide.Preferably, the inlet circulation channel 128a of the second fluid is orthogonal to the circulation inlet passage 130 of the second fluid and the outlet circulation channel 128b of the second fluid is orthogonal to the circulation outlet passage 131 of the second fluid. fluid.

Alternativement, selon un autre mode de réalisation, l'insert 127 est logé dans la chambre d'extrémité 126c dans laquelle circule le premier fluide, l'insert 127 permettant de canaliser le deuxième fluide. Ainsi, l'insert 127 comporte le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide, disposés dans la chambre d'extrémité 126c permettant la circulation du premier fluide.Alternatively, according to another embodiment, the insert 127 is housed in the end chamber 126c in which the first fluid flows, the insert 127 for channeling the second fluid. Thus, the insert 127 includes the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid, disposed in the end chamber 126c for the circulation of the first fluid.

Selon une forme de réalisation illustrée sur la figure 5, le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide sont réalisés sous la forme d'une pièce additionnelle constituée par l'insert 127. Ainsi, afin de former le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide, l'insert 127 est disposé dans la chambre d'extrémité 126c, entre la dernière plaque 124 et l'avant-dernière plaque 124 de l'empilement de plaques 124 constituant l'échangeur de chaleur 100.According to an embodiment illustrated on the figure 5 the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are made in the form of an additional part constituted by the insert 127. Thus, in order to form the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid, the insert 127 is disposed in the end chamber 126c, between the last plate 124 and the penultimate plate 124 of the stack of plates 124 constituting the exchanger of heat 100.

Les figures 6 et 7 sont des vues schématiques partielles de variantes respectives de réalisation de l'échangeur de chaleur 100 selon la présente invention. Selon une première alternative de réalisation illustrée sur la figure 6, le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide sont réalisés par l'intermédiaire de l'insert 127 logé à l'intérieur de la chambre d'extrémité 126c, entre la dernière plaque 124 et l'avant-dernière plaque 124 de l'empilement de plaques 124 constituant l'échangeur de chaleur 100. Selon l'exemple de la figure 6, l'insert 127 est formé d'une lame 132 unique.The Figures 6 and 7 are partial schematic views of respective embodiments of the heat exchanger 100 according to the present invention. According to a first alternative embodiment illustrated on the figure 6 , the channel of inlet circulation 128a and the outlet circulation channel 128b of the second fluid are made through the insert 127 housed inside the end chamber 126c, between the last plate 124 and the front-end. last plate 124 of the stack of plates 124 constituting the heat exchanger 100. According to the example of the figure 6 the insert 127 is formed of a single blade 132.

La lame 132 est réalisée à partir d'un feuillard, par exemple métallique, embouti. La lame 132 comporte une paroi de fond 132a et un contour 132b. La paroi de fond 132a et le contour 132b sont reliés entre eux par une paroi latérale 132c.The blade 132 is made from a strip, for example metal, stamped. The blade 132 has a bottom wall 132a and a contour 132b. The bottom wall 132a and the contour 132b are interconnected by a side wall 132c.

Afin de définir le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide, la paroi de fond 132a est en contact avec l'avant-dernière plaque 124 de l'empilement de plaques 124 et le contour 132b est en contact avec la dernière plaque 124 de l'empilement de plaques 124.In order to define the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid, the bottom wall 132a is in contact with the penultimate plate 124 of the stack of plates 124 and the contour 132b. is in contact with the last plate 124 of the stack of plates 124.

L'insert 127 est assemblé à la dernière plaque 124 et l'avant-dernière plaque 124 de l'empilement de plaques 124, préférentiellement, par brasage ou analogue.The insert 127 is assembled to the last plate 124 and the penultimate plate 124 of the stack of plates 124, preferably by brazing or the like.

Ainsi, le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide sont délimités par l'insert 127 et la dernière plaque 124.Thus, the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are delimited by the insert 127 and the last plate 124.

Selon une alternative de réalisation illustrée sur la figure 7, le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide sont réalisés par l'intermédiaire de l'insert 127 logé à l'intérieur de la chambre d'extrémité 126c, entre la dernière plaque 124 et l'avant-dernière plaque 124 de l'empilement de plaques 124 constituant l'échangeur de chaleur 100. Selon l'exemple de la figure 7, l'insert 127 est formé par un assemblage entre elles de deux lames 133.According to an alternative embodiment illustrated on the figure 7 the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are made through the insert 127 housed inside the end chamber 126c between the last plate 124 and the penultimate plate 124 of the stack of plates 124 constituting the heat exchanger 100. According to the example of the figure 7 , the insert 127 is formed by an assembly between them of two blades 133.

Chaque lame 133 est réalisée à partir d'un feuillard, pax exemple métallique, embouti. De plus, chaque lame 133 comporte une paroi de fond 133a et un contour 133b reliés entre eux par une paroi latérale 133c.Each blade 133 is made from a strip, for example metal, stamped. In addition, each blade 133 has a bottom wall 133a and a contour 133b interconnected by a side wall 133c.

Afin de définir le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide, les deux lames 133 sont assemblées entre elles de sorte que leurs contours 133b respectifs soient en contact. De plus, la paroi de fond 133a d'une des lames 133 est en contact avec l'avant-dernière plaque 124 de l'empilement de plaques 124 alors que la paroi de fond 133a de l'autre des lames 133 est en contact avec la dernière plaque 124 de l'empilement de plaques 124..In order to define the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid, the two blades 133 are assembled together so that their respective contours 133b are in contact. In addition, the bottom wall 133a of one of the blades 133 is in contact with the penultimate plate 124 of the stack of plates 124 while the bottom wall 133a of the other blade 133 is in contact with the last plate 124 of the stack of plates 124 ..

L'insert 127 est assemblé à la dernière plaque 124 et l'avant-dernière plaque 124 de l'empilement de plaques 124, préférentiellement, par brasage ou analogue.The insert 127 is assembled to the last plate 124 and the penultimate plate 124 of the stack of plates 124, preferably by brazing or the like.

Ainsi, le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b du deuxième fluide sont délimités par l'insert 127, dans un espace intérieur compris entre les deux lames 133.Thus, the inlet circulation channel 128a and the outlet circulation channel 128b of the second fluid are delimited by the insert 127, in an interior space between the two blades 133.

De plus, afin d'assurer une communication de l'intérieur de l'insert 127 avec l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122, la lame 133 en contact avec la dernière plaque 124 comporte des ouvertures de circulation 134, coopérant respectivement avec l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122.In addition, in order to ensure communication of the interior of the insert 127 with the inlet of the second fluid 121 and the outlet of the second fluid 122, the blade 133 in contact with the last plate 124 has circulation openings 134 cooperating respectively with the inlet of the second fluid 121 and the outlet of the second fluid 122.

Selon ce mode de réalisation, chaque lame 133 est formée d'un feuillard, par exemple métallique, assemblé, notamment par brasage ou analogue, sur la dernière plaque 124 et l'avant-dernière plaque 124.According to this embodiment, each blade 133 is formed of a strip, for example metal, assembled, in particular by brazing or the like, on the last plate 124 and the penultimate plate 124.

On se réfère dorénavant aux figures 8a et 8b qui sont des vues schématiques de deux modes de réalisation de l'insert 127 selon la présente invention.We now refer to Figures 8a and 8b which are schematic views of two embodiments of the insert 127 according to the present invention.

Selon une première variante de réalisation présentée en figure 8a, l'insert 127 est constitué de deux compartiments de distribution 135a et 135b disjoints. Avantageusement, les deux compartiments de distribution 135a et 135b sont identiques. Selon l'exemple présenté sur la figure 8a, les deux compartiments de distribution 135a et 135b sont agencés selon une symétrie ponctuelle l'un par rapport à l'autre. En conséquence, les deux compartiments de distribution 135a et 135b définissent respectivement le canal de circulation d'entrée 128a et le canal de circulation de sortie 128b.According to a first embodiment variant presented in figure 8a , the insert 127 consists of two distribution compartments 135a and 135b disjoint. Advantageously, the two distribution compartments 135a and 135b are identical. According to the example presented on the figure 8a the two distribution compartments 135a and 135b are arranged in point symmetry with respect to one another. Accordingly, the two distribution compartments 135a and 135b respectively define the input circulation channel 128a and the output circulation channel 128b.

Selon une deuxième variante de réalisation présentée en figure 8b, l'insert 127 est constitué d'un dispositif de distribution 136, constitué d'une pièce unique, comprenant deux chambres de distribution 136a et 136b. Avantageusement, les deux chambres de distribution 136a et 136b sont identiques. Selon l'exemple présenté sur la figure 8b, les deux chambres de distribution 136a et 136b sont agencées selon une symétrie ponctuelle l'un par rapport à l'autre.According to a second embodiment variant presented in figure 8b , insert 127 consists of a dispensing device 136, consisting of a single piece, comprising two distribution chambers 136a and 136b. Advantageously, the two distribution chambers 136a and 136b are identical. According to the example presented on the figure 8b the two distribution chambers 136a and 136b are arranged in point symmetry with respect to each other.

De plus, les parois constitutives de l'insert 127 s'étendent avantageusement, respectivement, selon la première direction et la deuxième direction, tel que présenté sur la figure 8a. Alternativement, au moins une des parois constitutives de l'insert 127 peut former un angle avec la première direction et/ou la deuxième direction, tel que présenté sur la figure 8b. De tels agencements particuliers permettent de localiser l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122 selon une configuration optimale.In addition, the constituent walls of the insert 127 advantageously extend, respectively, in the first direction and the second direction, as shown on the figure 8a . Alternatively, at least one of the constituent walls of the insert 127 may form an angle with the first direction and / or the second direction, as presented on the figure 8b . Such particular arrangements make it possible to locate the inlet of the second fluid 121 and the outlet of the second fluid 122 in an optimal configuration.

Les figures 9a à 9c sont des vues schématiques de la dernière plaque 24 de l'échangeur de chaleur 100 selon des variantes d'intégration respectives dans la boucle de climatisation 2 du système de climatisation 1.The Figures 9a to 9c are schematic views of the last plate 24 of the heat exchanger 100 according to respective integration variants in the air conditioning loop 2 of the air conditioning system 1.

Plus particulièrement, sur les figure 9a à 9c, la dernière plaque 124 est pourvue d'un élément de raccordement 140 permettant de relier l'échangeur de chaleur 100 aux autres composants de la boucle de climatisation 2 et/ou de la boucle secondaire 18 du système de climatisation 1.More particularly, on Figure 9a to 9c , the last plate 124 is provided with a connecting element 140 for connecting the heat exchanger 100 to the other components of the air conditioning loop 2 and / or the secondary loop 18 of the air conditioning system 1.

En particulier, l'élément de raccordement 140 est l'organe de détente 5 de la boucle de climatisation 2 ou tout autre composant constitutif de la boucle de climatisation 2 et/ou de la boucle secondaire 18.In particular, the connecting element 140 is the expansion member 5 of the air conditioning loop 2 or any other constituent component of the air conditioning loop 2 and / or the secondary loop 18.

L'élément de raccordement 140 comporte une ouverture d'admission 141 et une ouverture d'évacuation 142 du deuxième fluide qui sont, respectivement, en relation fluidique avec l'entrée du deuxième fluide 121 et la sortie du deuxième fluide 122.The connecting element 140 comprises an inlet opening 141 and an outlet opening 142 of the second fluid which are, respectively, in fluidic relation with the inlet of the second fluid 121 and the outlet of the second fluid 122.

L'élément de raccordement 140 comporte un grand axe A passant par les centres de l'ouverture d'admission 141 et de l'ouverture d'évacuation 142.The connecting member 140 has a major axis A passing through the centers of the inlet opening 141 and the discharge opening 142.

Selon les diverses variantes d'intégration des figure 9a à 9c, l'élément de raccordement 140 est positionné de telle que sorte le grand axe A forme un angle donné avec le premier axe médian x, compris entre 0° et 90°, par exemple de l'ordre de 45°.According to the various integration variants of Figure 9a to 9c , the connecting element 140 is positioned so that the major axis A forms a given angle with the first median axis x, between 0 ° and 90 °, for example of the order of 45 °.

Plus particulièrement, sur la figure 9a, l'angle est égal à 0°, sur la figure 9b, l'angle est égal à 90° et, sur la figure 9c, l'angle est égal à 45 °.More particularly, on the figure 9a , the angle is 0 °, on the figure 9b , the angle is equal to 90 ° and, on the Figure 9c the angle is equal to 45 °.

Claims (12)

  1. Heat exchanger (100) for transferring heat between a first fluid and a second fluid, the heat exchanger (100) comprising a stack of plates (124) comprising a last plate (124) and a penultimate plate (124) jointly delimiting an end chamber (126c), the last plate (124) being provided with at least one inlet for the second fluid (121) and one outlet for the second fluid (122), the stack of plates (124) defining an inlet passage for the second fluid (130) and an outlet passage for the second fluid (131), the end chamber (126c) housing a channeling means (127) comprising an inlet circulation canal (128a) for channeling the second fluid between the inlet for the second fluid (121) and the inlet passage for the second fluid (130), and an outlet circulation canal (128b) for channeling the second fluid between the outlet for the second fluid (122) and the outlet passage for the second fluid (131), the channeling means (127) consisting of an insert (127) housed in the end chamber (126c), characterized in that the insert (127) is formed of at least one blade (132, 133) comprising a base wall (132a, 133a) and a contour (132b, 133b) which are connected to one another by a lateral wall (132c, 133c).
  2. Heat exchanger (100) according to Claim 1, characterized in that the base wall (132a) is in contact with the penultimate plate (124) of the stack of plates (124) and in that the contour (132b) is in contact with the last plate (124) of the stack of plates (124).
  3. Heat exchanger (100) according to Claim 2, characterized in that the inlet circulation canal (128a) and the outlet circulation canal (128b) for the second fluid are delimited by the insert (127) and the last plate (124).
  4. Heat exchanger (100) according to Claim 1, characterized in that the insert (127) is formed by two blades (133) joined together, the base wall (133a) of one of the blades (133) being in contact with the penultimate plate (124) of the stack of plates (124), the base wall (133a) of the other of the blades (133) being in contact with the last plate (124) of the stack of plates (124) and the respective contours (133b) of the blades (133) being in contact with one another.
  5. Heat exchanger (100) according to one of Claims 1 to 4, characterized in that the insert (127) is made up of two separate distribution compartments (135a, 135b).
  6. Heat exchanger (100) according to Claim 5, characterized in that the two distribution compartments (135a, 135b) are identical.
  7. Heat exchanger (100) according to one of Claims 1 to 4, characterized in that the insert (127) consists of a distribution device (136) comprising two distribution chambers (136a, 136b).
  8. Heat exchanger (100) according to Claim 7, characterized in that the two distribution chambers (136a, 136b) are arranged with local symmetry with respect to one another.
  9. Heat exchanger (100) according to any one of the preceding claims, characterized in that the inlet circulation canal (128a) and the outlet circulation canal (128b) for the second fluid are orthogonal to the inlet passage for the second fluid (130) and to the outlet passage for the second fluid (131).
  10. Heat exchanger (100) according to any one of the preceding claims, characterized in that the inlet for the second fluid (121) and the outlet for the second fluid (122) are arranged in a central zone (129) of the last plate (124) of the stack of plates (124).
  11. Air-conditioning loop (2) and/or secondary loop (18) comprising a heat exchanger (100) according to any one of the preceding claims.
  12. Air-conditioning loop (2) and/or secondary loop (18) according to Claim 11, characterized in that the air-conditioning loop (2) and/or the secondary loop (18) comprises a connecting element (140) comprising an intake opening (141) and a discharge opening (142) for the second fluid and a major axis (A) passing through the centers of the intake opening (141) and of the discharge opening (142), and in that the major axis (A) forms an angle of between 0° and 90° with a first median axis of the last plate (124) of the stack of plates (124).
EP11781518.3A 2010-11-10 2011-11-07 Fluid/fluid heat exchanger Active EP2638350B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11781518T PL2638350T3 (en) 2010-11-10 2011-11-07 Fluid/fluid heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1004404A FR2967248B1 (en) 2010-11-10 2010-11-10 HEAT EXCHANGER FLUID / FLUID
PCT/EP2011/069573 WO2012062714A1 (en) 2010-11-10 2011-11-07 Fluid/fluid heat exchanger

Publications (2)

Publication Number Publication Date
EP2638350A1 EP2638350A1 (en) 2013-09-18
EP2638350B1 true EP2638350B1 (en) 2015-03-18

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EP11781518.3A Active EP2638350B1 (en) 2010-11-10 2011-11-07 Fluid/fluid heat exchanger

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US (1) US20130292101A1 (en)
EP (1) EP2638350B1 (en)
JP (1) JP5837605B2 (en)
FR (1) FR2967248B1 (en)
MX (1) MX2013005251A (en)
PL (1) PL2638350T3 (en)
WO (1) WO2012062714A1 (en)

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DE102018114352A1 (en) * 2018-06-15 2019-12-19 Airbus Operations Gmbh Gas dehumidifier and means of transport with a gas dehumidifier
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MX2013005251A (en) 2013-07-05
US20130292101A1 (en) 2013-11-07
JP5837605B2 (en) 2015-12-24
JP2013543101A (en) 2013-11-28
WO2012062714A1 (en) 2012-05-18
FR2967248A1 (en) 2012-05-11
FR2967248B1 (en) 2015-01-23
PL2638350T3 (en) 2015-10-30
EP2638350A1 (en) 2013-09-18

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