EP3818319B1 - Plate for a heat exchanger and heat exchanger comprising the plate - Google Patents

Plate for a heat exchanger and heat exchanger comprising the plate Download PDF

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Publication number
EP3818319B1
EP3818319B1 EP19737519.9A EP19737519A EP3818319B1 EP 3818319 B1 EP3818319 B1 EP 3818319B1 EP 19737519 A EP19737519 A EP 19737519A EP 3818319 B1 EP3818319 B1 EP 3818319B1
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EP
European Patent Office
Prior art keywords
edge
plate
stack
plates
fluid
Prior art date
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Application number
EP19737519.9A
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German (de)
French (fr)
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EP3818319A1 (en
Inventor
Charles Bonnafous
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Nexson Group SAS
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Nexson Group SAS
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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
    • F28D9/0037—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 conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—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 spaced plates with inserted elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/20—Fastening; Joining with threaded elements
    • F28F2275/205—Fastening; Joining with threaded elements with of tie-rods

Definitions

  • the invention relates to a plate for a heat exchanger, and a heat exchanger including such a plate.
  • the function of heat exchangers is to implement a heat exchange between several fluids without mixing them.
  • Heat exchangers known as “welded plate” heat exchangers are commonly used in industry because they have good thermal performance thanks to their large exchange surface while being compact.
  • These heat exchangers generally comprise a stack (or stack) of superimposed plates, defining between them two separate fluid circulation circuits, and a frame forming an enclosure intended to house the stack of plates.
  • These exchangers also include collectors fixed to the frame. These collectors are connected to conduits making it possible to bring the fluids towards the exchanger and to conduits making it possible to evacuate the fluids from the exchanger once these have circulated in the exchanger.
  • a hot fluid and a cold fluid circulate respectively in the two circulation circuits formed between the plates, in two orthogonal directions.
  • exchangers can be used to treat fluids of different natures, which can sometimes contain solid particles. These exchangers therefore need to be cleaned regularly in order to avoid their fouling and to guarantee good operating performance.
  • cleaning welded plate heat exchangers can be a time-consuming and complex operation. Indeed, this operation requires either dismantling the collectors fixed to the frame in order to to be able to access the pack of plates in order to carry out mechanical cleaning, or to circulate a chemical cleaning agent, such as a detergent or a disinfectant, in the heat exchanger.
  • a chemical cleaning agent such as a detergent or a disinfectant
  • An object of the invention is to propose a solution guaranteeing good efficiency of the heat exchanger while facilitating its cleaning.
  • baffle(s) increase the turbulence in the fluid and causes changes in speed, thereby reducing fouling of the heat exchanger.
  • the plate can be designed so that the exchanger can be cleaned by accessing the plate pack via one of the faces of the plate pack extending transversely to the longitudinal ribs of the plates. Due to the orientation of the rib, access to this face of the plate pack makes it possible to clean the entire fluid circulation channel.
  • the heat exchanger can also be designed so that no collector is attached to this side of the plate pack. Thus, it is not necessary to dismantle the collector to carry out a mechanical cleaning of the exchanger.
  • the heat exchanger 1 represented comprises two support legs 2 and 3, a pack of exchanger plates 4, four fluid collectors 5 to 8, two compression plates 9 and 10, two sets of tie rods 11 and 12, two support frames 13 and 14, two joints 15 and 16 and two side doors 17 and 18.
  • the pack of exchanger plates 4 comprises a plurality of exchanger plates 20 stacked with each other and welded together.
  • the plates 20 of the stack are identical to each other, with the exception of an end plate 21.
  • the pack of plates 4 has a front face 22, a rear face 23, opposite the front face 22, a first side face 24, a second side face 25, opposite the first face side 24, an upper face 26 and a lower face 27, opposite the upper face 26.
  • the exchanger plates 20 of the plate pack 4 delimit fluid circulation channels between them. More precisely, the exchanger plates delimit between them two separate circulation channels in which a first fluid and a second fluid can circulate respectively, without mixing.
  • the two compression plates 9 and 10 include a first compression plate 9 and a second compression plate 10.
  • the plate pack 4 is arranged between the two compression plates 9 and 10.
  • the exchanger plates 20 of the plate pack 4 are held in compression against each other by the compression plates 9 and 10. More precisely, the first compression plate 9 is placed against the front face 22 of the pack of plates 4 and the second compression plate 10 is placed against the rear face 23 of the pack of plates 4.
  • a first series of tie rods 11 extend along the upper face 26 and a second series of tie rods 12 extend along the lower face 27.
  • the tie rods 11 and 12 connect the first compression plate 9 and the second compression plate 10 between them, so as to oppose the expansion forces that may be generated by the fluids circulating between the exchanger plates 20 and 21 of the plate pack 4.
  • Each of the ends of the tie rods is fixed to one of the compression plates and the tie rods 11, 12 can be held in tension by means of tightening nuts.
  • the compression plates 9 and 10 exert on the plate pack a permanent compressive force tending to keep the exchanger plates 20, 21 bearing against each other and to oppose their separation.
  • Each support foot 2, 3 is capable of supporting the compression plates 9, 10 to maintain the heat exchanger 1 above the ground.
  • the support frames 13, 14 include a first support frame 13 and a second support frame 14. Each of the first support frame 13 and the second support frame 14 is fixed to the plate pack 4 or the compression plates 9, 10, for example by welding.
  • the first support frame 13 is able to surround the assembly formed by the pack of plates 4 and the two compression plates 9, 10.
  • the first support frame 13 extends around the first lateral face 24 of the pack of plates 4
  • the second support frame 14 is able to surround the assembly formed by the pack of plates 4 and the two compression plates.
  • the second support frame 14 extends around the second side face 25 of the stack of plates 4.
  • the side doors 17, 18 include a first door 17 rotatably mounted on the first support frame 13 and a second door 18 rotatably mounted on the second support frame 14.
  • the first door 17 can be rotatably mounted on the first support frame 13 by means of first hinges 31.
  • the first door 17 is movable between a closed position, in which the first door 17 covers the first side face 24 of the stack of plates 4 and conceals the latter, and an open position, in which the first door 17 does not cover the first side face 24 of the stack of plates 4 and allows access thereto.
  • the second door 18 can be rotatably mounted on the second frame 14 by means of second hinges 32.
  • the second door 18 is movable between a closed position, in which the second door 18 covers the second side face 25 of the stack of plates 4 and conceals the latter, and an open position, in which the second door 18 does not cover the second side face 25 of the stack of plates 4 and allows access thereto.
  • the first door 17 can be locked in the closed position, by means of screws 33, the screws 33 serving to screw the first door 17 onto the first frame 13.
  • the second door 18 can be locked in the closed position, by the through screws 34, the screws 34 serving to screw the second door 18 onto the second frame 14.
  • the seals 15 and 16 include a first seal 15 suitable for being placed between the first door 17 and the first side face 24 of the stack 4 and a second seal 16 suitable for being placed between the second door 18 and the second side face 25 of the stack 4.
  • Each seal 15, 16 can be formed from a sheet of polymer material.
  • the polymeric material can be an elastomer, for example a nitrile rubber (acrylonitrile-butadiene), an EPDM rubber (ethylene-propylene-diene monomer) or a fluorocarbon elastomer.
  • the seals 15, 16 provide peripheral sealing of each exchanger plate 20 and prevent the flow of fluids from one fluid circulation channel to the other.
  • Collectors 5 to 8 include a first input collector 5, a first output collector 6, a second input collector 7 and a second output collector 8.
  • the first inlet manifold 5 and the first outlet manifold 6 are suitable for guiding a first fluid (for example a cold fluid) so that the first fluid circulates inside the pack of plates 4 in a first circulation channel of fluid.
  • a first fluid for example a cold fluid
  • the second inlet manifold 7 and the second outlet manifold 8 are suitable for guiding a second fluid (for example a hot fluid) so that the second fluid circulates inside the pack of plates 4 in a second channel fluid circulation, separate from the first fluid circulation channel.
  • a second fluid for example a hot fluid
  • the first inlet manifold 5 is fixed on the lower face 27 of the pack of plates 4 and the first outlet manifold 6 is fixed on the upper face 26 of the pack of plates 4.
  • the second inlet manifold 7 is fixed on the upper face 26 of the pack of plates 4 and the second output manifold 8 is fixed to the lower face 27 of the pack of plates 4.
  • the first inlet manifold 5 comprises a first inlet pipe 35 capable of being connected to a first conduit for supplying the first fluid and a first wall 45 of the inlet manifold, for example having the general shape of a quarter cylinder. of revolution, and a series of internal partitions 55 extending transversely to the axis of the cylinder.
  • the first outlet manifold 6 comprises a first outlet pipe 36 capable of being connected to a first duct for extracting the first fluid, a first outlet manifold wall 46, having for example the general shape of a quarter cylinder of revolution, and a series of internal partitions 56 extending transversely to the axis of the cylinder.
  • Each internal partition 55 of the first inlet manifold 5 and each internal partition 56 of the first outlet manifold 6 has a free edge extending in the same plane as the side face 24. Each free edge is in contact with the first seal 16 In this way, the internal partitions 55, 56 define with the first seal 15 compartments making it possible to guide the first fluid flowing in a space between two exchanger plates 20 towards another space between two other exchanger plates.
  • the second inlet manifold 7 comprises a second inlet pipe 37 capable of being connected to a second conduit for supplying the second fluid, a second inlet manifold wall 47, for example having a generally quarter cylinder of revolution, and a series of internal partitions 57 extending transversely to the axis of the cylinder.
  • the second outlet manifold 8 comprises a second outlet pipe 38 able to be connected to a second duct for extracting the second fluid, a second outlet manifold wall 48, for example having the general shape of a quarter cylinder of revolution, and a series of internal partitions 58 extending transversely to the axis of the cylinder.
  • Each internal partition 57 of the second inlet manifold 7 and each internal partition 58 of the second outlet manifold 58 has a free edge extending in the same plane as the side face 24. Each free edge is in contact with the second seal 16 In this way, the internal partitions 57, 58 define with the second seal 16 compartments making it possible to guide the second fluid flowing in a space between two exchanger plates 20 to another space between two other exchanger plates.
  • the exchanger plates 20 include first exchanger plates 20A and second exchanger plates 20B illustrated schematically on the figures 8A and 8B .
  • the figure 8A schematically represents a first exchanger plate 20A intended to guide the first fluid.
  • the first exchanger plate 20A can be formed of metal, for example titanium or stainless steel, such as a stainless steel containing chromium and molybdenum which increase the resistance to corrosion, nickel or an alloy containing Nickel and Copper.
  • the choice of material for plate 20A depends on the nature of the fluids to be treated and their state (temperature, pressure).
  • the first exchanger plate 20A comprises a main panel 60, two junction panels 61, 62 and ribs 63, 64 projecting from the main panel 60 and delimiting a circulation path for the fluid.
  • the main panel 60 has the general shape of a rectangle.
  • the main panel 60 comprises a first face 65 and a second face 66, opposite the first face 65.
  • the first face 65 and/or the second face 66 of the main panel 60 can be smooth or present reliefs favoring the generation of turbulence in the fluid.
  • the main panel 60 can for example be formed from a teardrop or checker plate.
  • the main panel 60 has four edges 67 to 70.
  • the main panel 60 has a first edge 67, a second edge 68, opposite the first transverse edge 67, a third edge 69 and a fourth edge 70, opposite the third edge 69.
  • first edge 67 and the second edge 68 are transverse edges, while the third edge 69 and the fourth edge 70 are longitudinal edges.
  • the first edge 67 and the second edge 68 are parallel to each other.
  • the third edge 69 and the fourth edge 70 are parallel to each other, and are perpendicular to the edges 67 and 68.
  • Joint panels 61, 62 include a first joint panel 61 extending from the third longitudinal edge 69 of the main panel 60 and a second joint panel 62 extending from the fourth longitudinal edge 70 of the main panel 60.
  • the first junction panel 61 and the second junction panel 62 can be connected to the main panel 60 respectively by a first fold line and by a second fold line.
  • the first junction panel 61 has a first opening 71 (or fluid inlet opening formed in the first junction panel 61) allowing fluid to enter the circulation path.
  • the second junction panel 62 has a second opening 72 (or fluid outlet opening formed in the second junction panel 62) allowing fluid to exit from the circulation path.
  • the exchanger plate 20A does not include joint panels extending from the transverse edges 67 and 68 of the main panel. Thus, the edges 67 and 68 of the main panel 60 are free.
  • the ribs 63, 64 extend projecting from the first face 65 of the main panel 60.
  • the ribs 63, 64 constitute spacers making it possible to maintain a spacing between two main panels 60 of two adjacent exchanger plates 20A and 20B and to resist the compressive forces that can be exerted on the pack of plates 4.
  • each rib 63, 64 is dimensioned to be in contact with a second face 66 of a main panel 60 of a plate of adjacent exchanger 20B in the stack.
  • All the ribs 63, 64 extend parallel to each other. In the example shown in the figure 8 , the ribs 63, 64 extend parallel to the longitudinal edges 69, 70 of the main panel 60.
  • the first plate 20A does not include ribs extending parallel to the transverse edges 67, 68.
  • the ribs 63, 64 include a plurality of first ribs 63 and a plurality of second ribs 64, the second ribs 64 being alternately disposed with the first ribs.
  • Each first rib 63 extends from the first transverse edge 67 of the main panel 60 towards the second transverse edge 68, without however extending as far as the second transverse edge 68. Each first rib 63 thus provides a first fluid passage between a end of the first rib 63 and the second transverse edge 68. At this point, the fluid circulation path forms a first baffle.
  • Each second rib 64 extends from the second transverse edge 68 of the main panel 60 towards the first transverse edge 67, without however extending as far as the first transverse edge 67. Each second rib 64 thus provides a second fluid passage between a end of the second rib 64 and the first transverse edge 67. At this point, the fluid circulation path forms a second baffle.
  • the first exchanger plate comprises n+1 first ribs (n being an integer greater than or equal to 0, preferably greater than or equal to 1) and n second ribs.
  • the first opening 71 and the second opening 72 are arranged close to the first transverse edge 67.
  • the second opening 72 is arranged opposite the first opening 71.
  • the two openings 71, 72 are aligned with each other along of the first transverse edge 67.
  • first edge 67 and the second edge 68 are transverse edges while the third edge 69 and the fourth edge 70 are longitudinal edges.
  • first edge 67 and the second edge 68 are longitudinal edges while the third edge 69 and the fourth edge 70 are transverse edges.
  • the figure 8B schematically represents a second exchanger plate 20B intended to guide a second fluid.
  • the second exchanger plate 20B is stacked with the first exchanger plate 20A of the figure 8A .
  • the second exchanger plate 20B constitutes an exchanger plate adjacent to the first exchanger plate 20A in the stack 4.
  • the second exchanger plate 20B is identical to the first exchanger plate 20A. However, in stack 4, second exchanger plate 20B is oriented by being rotated 180° relative to first exchanger plate 20A, in the plane of its main panel 60.
  • the pack of plates 4 is obtained by stacking a series of plates including a plurality of first plates 20A and a plurality of second plates 20B, arranged alternately with the first plates 20A.
  • first transverse edges 67 of the first plates 20A are arranged in register with the second transverse edges 68 of the second plates 20B.
  • the first transverse edges 67 of the first plates 20A and the second transverse edges 68 of the second plates 20B thus define the first side face 24 of the pack of plates 4.
  • the second transverse edges 68 of the first plates 20A are arranged in register with the first transverse edges 67 of the second plates 20B.
  • the second transverse edges 68 of the first plates 20A and the first transverse edges 67 of the second plates 20B thus define the second side face 25 of the pack of plates 4.
  • the third longitudinal edges 69 of the first plates 20A are arranged in register with the fourth edges longitudinal 70 of the second plates 20B.
  • the third longitudinal edges 69 of the first plates 20A and the fourth longitudinal edges 70 of the second plates 20B thus define the lower face 27 of the pack of plates 4.
  • the fourth longitudinal edges 70 of the first plates 20A are arranged in register with the third longitudinal edges 69 of the second plates 20B.
  • the fourth longitudinal edges 70 of the first plates 20A and the third longitudinal edges 69 of the second plates 20B thus define the upper face 26 of the pack of plates 4.
  • the figure 9 illustrates a first circulation path of the first fluid in the exchanger 1.
  • the first fluid circulates between the first face 65 of a first exchanger plate 20A and the second face 66 of a second exchanger plate 20B.
  • the first fluid is injected into the first fluid circulation path via the first inlet manifold 5.
  • the first fluid circulates from the first opening 71 to the second opening 72 between the first ribs 63 and the second ribs 64 of the first exchanger plate 20A, bypassing the ends of the ribs 63, 64. More precisely, the first fluid circulates alternately in a first direction (arrow A), in a longitudinal direction of the main panel 60, then in a second direction ( arrow B), opposite to the first direction, in the longitudinal direction.
  • the first fluid circulation path has a succession of first baffles (arrow C) and second baffles (arrow D), which makes it possible to lengthen the flow path of the first fluid along the first exchanger plate 20A avoiding the creation of dead zones and thus promoting heat exchange with the second fluid.
  • the first fluid escapes via the second opening 72 towards the first outlet manifold 6.
  • the first outlet manifold 6 guides the first fluid to inject it again between two exchanger plates 20A and 20B.
  • the figure 10 illustrates a second circulation path of the second fluid in the exchanger.
  • the second fluid circulates between the first face 65 of a second exchanger plate 20B and the second face 66 of a first exchanger plate 20A.
  • the second fluid circulates in counter-current relative to the first fluid.
  • the second fluid is injected into the second fluid circulation path via the second inlet manifold 7.
  • the second fluid circulates from the first opening 71 to the second opening 72 between the first ribs 63 and the second ribs 64 of the second exchanger plate 20B, bypassing the ends of the ribs 63, 64. More precisely, the second fluid circulates alternately in the second direction (arrow B), in a longitudinal direction, then in the first direction (arrow A), opposite to the second direction, in the longitudinal direction.
  • the second fluid circulation path has a succession of first baffles (arrow E) and second baffles (arrow F), which makes it possible to lengthen the flow path of the second fluid along the exchanger plate 20B by avoiding creating dead zones and promoting heat exchange with the first fluid.
  • the second fluid escapes via the second opening 72 towards the second outlet manifold 8.
  • the second outlet manifold 8 guides the second fluid to inject it again between two exchanger plates 20B and 20A.
  • the figures 11 to 15 illustrate several examples of ribs 63 or 64.
  • the rib 63 has a rectangular cross section.
  • the rib 63 is fixed to the main panel 60 via two lines of welds 73 formed on either side of the rib. More precisely, the rib 63 is welded to the first face 65 of the main panel 60.
  • the rib 63 has an I-shaped cross section comprising a central web 74 and two flanges 75, 76.
  • the first flange 75 is fixed to the main panel 60 of the exchanger plate 20 by two weld lines 73. More specifically, the first flange 75 is fixed on the first face 65 of the main panel 60 of the exchanger plate 20 and the second sole 76 is adapted to be fixed on the second face 66 of a main panel 60 of an adjacent heat exchanger plate.
  • the rib 63 has an x-shaped cross-section.
  • the rib 63 is formed of two sections 77, 78 each having a C-shaped cross-section, the two sections being arranged one against the other in a symmetrical manner.
  • the rib 63 is fixed to the main panel 60 via a line of welds 73 formed between the first face 65 of the main panel 60 and the two C sections. More precisely, the rib 63 is welded to the first face 65 of the main panel 60.
  • the rib 63 is formed by a separate profile attached to the main panel 60 of the exchanger plate 20.
  • the rib 63 is formed by stamping the exchanger plate 20.
  • the main panel 60 and the ribs 63, 64 are thus formed in a single piece of material.
  • the rib 63 is able to be joined to the second face 66 of a main panel 60 of an adjacent exchanger plate, for example by a welding line extending along the top of the rib 63.
  • the figure 16 schematically represents an example of main panel 60 having reliefs favoring the generation of turbulence in the fluid.
  • the reliefs include undulations.
  • the undulations include depressions and bumps extending in a general direction parallel to the ribs 63 and 64.
  • the figure 17 schematically shows an example in which the heat exchanger 1 comprises, in addition to the longitudinal ribs 63, 64, studs 79 projecting from the main panel 60 and forming additional spacers allowing the pack of plates 4 to support compression forces.
  • the heat exchanger 1 is shown with the first door 17 and the second door 18 each in the open position.
  • the heat exchanger 1 can be easily cleaned. Indeed, the operator has direct access to the spaces between the exchanger plates 20.
  • the ribs 63, 64 extend parallel to each other, in a direction orthogonal to the side faces 24, 25 of the plate pack 4 , it is possible to introduce a cleaning tool and/or to pass a pressurized water jet between the plates 20 from the side faces 24, 25, parallel to the ribs.
  • the cleaning of the exchanger 1 can be carried out without dismantling the collectors 5 to 8.
  • each of the first plates 20A and of the second plates 20B comprises longitudinal ribs 63, 64.
  • first plates 20A comprise only longitudinal ribs and the second plates 20B comprise only transverse ribs, so that the two fluids flow in directions orthogonal to inside the heat exchanger.

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

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

L'invention concerne une plaque pour un échangeur thermique, et un échangeur thermique incluant une telle plaque.The invention relates to a plate for a heat exchanger, and a heat exchanger including such a plate.

ETAT DE LA TECHNIQUESTATE OF THE ART

Les échangeurs thermiques ont pour fonction de mettre en œuvre un échange de chaleur entre plusieurs fluides sans pour autant les mélanger.The function of heat exchangers is to implement a heat exchange between several fluids without mixing them.

Les échangeurs thermiques dits « à plaques soudées » sont couramment utilisés dans l'industrie car ils présentent de bonnes performances thermiques grâce à leur grande surface d'échange tout en étant compacts.Heat exchangers known as “welded plate” heat exchangers are commonly used in industry because they have good thermal performance thanks to their large exchange surface while being compact.

Ces échangeurs thermiques comprennent généralement un empilement (ou paquet) de plaques superposées, définissant entre elles deux circuits séparés de circulation de fluide, et un bâti formant une enceinte destinée à loger le paquet de plaques.These heat exchangers generally comprise a stack (or stack) of superimposed plates, defining between them two separate fluid circulation circuits, and a frame forming an enclosure intended to house the stack of plates.

Ces échangeurs comprennent également des collecteurs fixés sur le bâti. Ces collecteurs sont reliés à des conduits permettant d'amener les fluides vers l'échangeur et à des conduits permettant d'évacuer les fluides de l'échangeur une fois que ceux-ci ont circulé dans l'échangeur.These exchangers also include collectors fixed to the frame. These collectors are connected to conduits making it possible to bring the fluids towards the exchanger and to conduits making it possible to evacuate the fluids from the exchanger once these have circulated in the exchanger.

Dans ces échangeurs, un fluide chaud et un fluide froid circulent respectivement dans les deux circuits de circulation formés entre les plaques, selon deux directions orthogonales.In these exchangers, a hot fluid and a cold fluid circulate respectively in the two circulation circuits formed between the plates, in two orthogonal directions.

Ces échangeurs peuvent être utilisés pour traiter des fluides de différentes natures, pouvant parfois contenir des particules solides. Ces échangeurs nécessitent donc d'être nettoyés régulièrement afin d'éviter leur encrassement et de garantir de bonnes performances de fonctionnement.These exchangers can be used to treat fluids of different natures, which can sometimes contain solid particles. These exchangers therefore need to be cleaned regularly in order to avoid their fouling and to guarantee good operating performance.

Cependant, le nettoyage des échangeurs thermiques à plaques soudées peut constituer une opération longue et complexe. En effet, cette opération nécessite soit de démonter les collecteurs fixés sur le bâti afin de pouvoir accéder au paquet de plaques pour procéder à un nettoyage mécanique, soit de faire circuler dans l'échangeur thermique un agent chimique de nettoyage, tel qu'un détergent ou un désinfectant.However, cleaning welded plate heat exchangers can be a time-consuming and complex operation. Indeed, this operation requires either dismantling the collectors fixed to the frame in order to to be able to access the pack of plates in order to carry out mechanical cleaning, or to circulate a chemical cleaning agent, such as a detergent or a disinfectant, in the heat exchanger.

Le nettoyage d'un échangeur thermique nécessite en outre un arrêt de l'usine.Cleaning a heat exchanger also requires plant downtime.

Le document GB 2 251 061 décrit une plaque pour un échangeur thermique conforme au préambule de la revendication 1.The document UK 2,251,061 describes a plate for a heat exchanger according to the preamble of claim 1.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

Un but de l'invention est de proposer une solution garantissant une bonne efficacité de l'échangeur thermique tout en facilitant son nettoyage.An object of the invention is to propose a solution guaranteeing good efficiency of the heat exchanger while facilitating its cleaning.

Ce but est atteint dans le cadre de la présente invention grâce à une plaque pour un échangeur thermique, destinée à être disposée dans un empilement de plaques, la plaque comprenant :

  • un panneau principal présentant un premier bord, un deuxième bord, opposé au premier bord, un troisième bord, et un quatrième bord, opposé au troisième bord,
  • au moins une première nervure longitudinale s'étendant en saillie du panneau principal et propre à délimiter avec le panneau principal et une plaque adjacente un chemin de circulation de fluide, et
  • un premier panneau de jonction s'étendant à partir du troisième bord longitudinal,
dans laquelle la première nervure s'étend depuis le premier bord du panneau principal vers le deuxième bord, sans s'étendre jusqu'au deuxième bord, de sorte à ménager un premier passage de fluide entre une extrémité de la première nervure et le deuxième bord où le chemin de circulation de fluide forme une première chicane et dans laquelle le premier panneau de jonction présente une ouverture d'entrée de fluide permettant une entrée du fluide vers le chemin de circulation.This object is achieved in the context of the present invention thanks to a plate for a heat exchanger, intended to be placed in a stack of plates, the plate comprising:
  • a main panel having a first edge, a second edge, opposite the first edge, a third edge, and a fourth edge, opposite the third edge,
  • at least one first longitudinal rib projecting from the main panel and able to delimit with the main panel and an adjacent plate a fluid circulation path, and
  • a first joint panel extending from the third longitudinal edge,
wherein the first rib extends from the first edge of the main panel towards the second edge, without extending to the second edge, so as to provide a first fluid passage between one end of the first rib and the second edge wherein the fluid flow path forms a first baffle and wherein the first junction panel has a fluid inlet opening allowing entry of fluid to the flow path.

Avec une telle plaque, il est possible de réaliser un échangeur thermique à plaques soudées, dans lequel le chemin de circulation de l'un des fluides le long d'une même plaque forme une ou plusieurs chicane(s). La ou les chicane(s) augmente(nt) la turbulence dans le fluide et occasionne(nt) des changements de vitesse, diminuant de ce fait l'encrassement de l'échangeur thermique.With such a plate, it is possible to produce a heat exchanger with welded plates, in which the circulation path of one of the fluids along the same plate forms one or more baffle(s). The baffle(s) increase the turbulence in the fluid and causes changes in speed, thereby reducing fouling of the heat exchanger.

En outre, la plaque peut être conçue de sorte que le nettoyage de l'échangeur puisse être réalisé en accédant au paquet de plaques par l'une des faces du paquet de plaques s'étendant transversalement aux nervures longitudinales des plaques. Du fait de l'orientation de la nervure, l'accès à cette face du paquet de plaques permet de nettoyer l'ensemble du canal de circulation de fluide. L'échangeur thermique peut en outre être conçu de sorte qu'aucun collecteur ne soit fixé sur cette face du paquet de plaques. Ainsi, il n'est pas nécessaire de démonter le collecteur pour procéder à un nettoyage mécanique de l'échangeur.In addition, the plate can be designed so that the exchanger can be cleaned by accessing the plate pack via one of the faces of the plate pack extending transversely to the longitudinal ribs of the plates. Due to the orientation of the rib, access to this face of the plate pack makes it possible to clean the entire fluid circulation channel. The heat exchanger can also be designed so that no collector is attached to this side of the plate pack. Thus, it is not necessary to dismantle the collector to carry out a mechanical cleaning of the exchanger.

La plaque peut avantageusement présenter l'une des caractéristiques suivantes :

  • la plaque comprend au moins une deuxième nervure s'étendant en saillie du panneau principal, parallèlement à la première nervure, depuis le deuxième bord du panneau principal vers le premier bord, sans s'étendre jusqu'au premier bord, de sorte à ménager un passage de fluide entre une extrémité de la deuxième nervure et le premier bord où le chemin de circulation de fluide forme une deuxième chicane ;
  • la plaque comprend une pluralité de premières nervures et une pluralité de deuxièmes nervures disposées en alternance avec les premières nervures ;
  • la plaque comprend un deuxième panneau de jonction s'étendant à partir du troisième bord, le deuxième panneau de jonction présentant une ouverture de sortie de fluide permettant une sortie du fluide en provenance du chemin de circulation ;
  • la plaque est dépourvue de nervure parallèle au premier bord délimitant le chemin de circulation de fluide.
The plate can advantageously have one of the following characteristics:
  • the plate comprises at least one second rib extending projecting from the main panel, parallel to the first rib, from the second edge of the main panel towards the first edge, without extending as far as the first edge, so as to provide a fluid passage between one end of the second rib and the first edge where the fluid circulation path forms a second baffle;
  • the plate comprises a plurality of first ribs and a plurality of second ribs arranged alternately with the first ribs;
  • the plate includes a second junction panel extending from the third edge, the second junction panel having a fluid outlet opening allowing fluid to exit from the flow path;
  • the plate has no rib parallel to the first edge delimiting the fluid circulation path.

L'invention concerne en outre un échangeur thermique comprenant :

  • un paquet de plaques comprenant un empilement de plaques soudées entre elles, chaque plaque étant telle que définie précédemment, le paquet de plaques comprenant une première face latérale définie par des premiers et deuxièmes bords des plaques de l'empilement, et une deuxième face latérale définie par des premiers et deuxièmes bords opposés des plaques de l'empilement, et
  • une première porte mobile en rotation par rapport au paquet de plaques, entre une position fermée dans laquelle la première porte recouvre la première face latérale de l'empilement, et une position ouverte dans laquelle la première porte ne recouvre pas la première face latérale de l'empilement et autorise un accès à des espaces définis entre les plaques.
The invention further relates to a heat exchanger comprising:
  • a pack of plates comprising a stack of plates welded together, each plate being as defined above, the pack of plates comprising a first lateral face defined by first and second edges of the stack plates, and a second side face defined by opposite first and second edges of the stack plates, and
  • a first door movable in rotation relative to the stack of plates, between a closed position in which the first door covers the first side face of the stack, and an open position in which the first door does not cover the first side face of the stacking and allows access to defined spaces between the plates.

L'échangeur thermique proposé peut avantageusement présenter l'une des caractéristiques suivantes :

  • l'échangeur thermique comprend en outre un premier collecteur d'entrée de fluide et un premier collecteur de sortie de fluide, chacun des premiers collecteurs étant fixé sur une face de l'empilement orthogonale aux faces latérales et définie par des troisièmes et quatrièmes bords des plaques de l'empilement ;
  • chaque premier collecteur comprend une première paroi de collecteur s'étendant depuis la face de l'empilement orthogonale aux faces latérales jusqu'à la première porte, de sorte que lorsque la première porte est en position ouverte, la première porte autorise un accès à un espace interne du premier collecteur ;
  • l'échangeur thermique comprend en outre un premier joint propre à être disposé contre la première face latérale de l'empilement, en contact avec chacun des premiers et deuxièmes bords formant la première face latérale ;
  • l'échangeur thermique comprend en outre une deuxième porte mobile en rotation par rapport au paquet de plaques, entre une position fermée dans laquelle la deuxième porte recouvre la deuxième face latérale de l'empilement, et une position ouverte dans laquelle la deuxième porte ne recouvre pas la deuxième face latérale de l'empilement et autorise un accès à des espaces définis entre les plaques ;
  • l'échangeur thermique comprend en outre un deuxième collecteur d'entrée de fluide et un deuxième collecteur de sortie de fluide, chacun des deuxièmes collecteurs étant fixé sur une face de l'empilement orthogonale aux faces latérales et définie par des troisièmes et quatrièmes bords des plaques de l'empilement ;
  • chaque deuxième collecteur comprend une deuxième paroi de collecteur s'étendant depuis la face de l'empilement orthogonale aux faces latérales jusqu'à la deuxième porte, de sorte que lorsque la deuxième porte est en position ouverte, la deuxième porte autorise un accès à un espace interne du deuxième collecteur ;
  • l'échangeur thermique comprend un deuxième joint propre à être disposé contre la deuxième face latérale, en contact avec chacun des premiers et deuxièmes bords formant la deuxième face latérale.
The proposed heat exchanger can advantageously have one of the following characteristics:
  • the heat exchanger further comprises a first fluid inlet manifold and a first fluid outlet manifold, each of the first manifolds being attached to a face of the stack orthogonal to the side faces and defined by third and fourth edges of the stacking plates;
  • each first collector comprises a first collector wall extending from the face of the stack orthogonal to the side faces to the first door, so that when the first door is in the open position, the first door allows access to a internal space of the first manifold;
  • the heat exchanger further comprises a first seal capable of being placed against the first side face of the stack, in contact with each of the first and second edges forming the first side face;
  • the heat exchanger further comprises a second door movable in rotation relative to the pack of plates, between a closed position in which the second door covers the second lateral face of the stack, and an open position in which the second door does not cover not the second side face of the stack and allows access to defined spaces between the plates;
  • the heat exchanger further comprises a second fluid inlet manifold and a second fluid outlet manifold, each of the second manifolds being attached to a face of the orthogonal stack to the side faces and defined by third and fourth edges of the plates of the stack;
  • each second collector comprises a second collector wall extending from the face of the stack orthogonal to the side faces to the second door, so that when the second door is in the open position, the second door allows access to a internal space of the second manifold;
  • the heat exchanger comprises a second seal capable of being placed against the second side face, in contact with each of the first and second edges forming the second side face.

PRESENTATION DES DESSINSPRESENTATION OF DRAWINGS

D'autres caractéristiques et avantages ressortiront encore de la description qui suit, laquelle est purement illustrative te non limitative te doit être lue en regard des dessins annexés, parmi lesquels :

  • la figure 1 représente de manière schématique, en perspective, un échangeur thermique conforme à un mode de réalisation de l'invention,
  • la figure 2 représente de manière schématique l'échangeur thermique, en vue de face,
  • la figure 3 représente de manière schématique l'échangeur thermique, en vue de côté,
  • la figure 4 représente de manière schématique l'échangeur thermique, en vue de dessus,
  • la figure 5 est une vue en coupe, selon le plan de coupe transversal A-A, de l'échangeur thermique,
  • la figure 6 est une vue en coupe, selon le plan de coupe longitudinal B-B, de l'échangeur thermique,
  • la figure 7 est une vue éclatée de l'échangeur thermique des figures 1 à 6,
  • les figures 8A et 8B représentent de manière schématique des plaques d'échangeur destinées à être empilée avec d'autres plaques identiques dans l'échangeur thermique,
  • la figure 9 représente de manière schématique un premier chemin de circulation d'un premier fluide dans l'échangeur thermique,
  • la figure 10 représente de manière schématique un deuxième chemin de circulation d'un deuxième fluide dans l'échangeur thermique,
  • la figure 11 représente de manière schématique une nervure longitudinale conforme à un premier mode de réalisation de l'invention,
  • la figure 12 représente de manière schématique une nervure longitudinale conforme à un deuxième mode de réalisation de l'invention,
  • la figure 13 représente de manière schématique une nervure longitudinale conforme à un quatrième mode de réalisation de l'invention,
  • les figures 14 et 15 représentent de manière schématique une nervure longitudinale conforme à un troisième mode de réalisation de l'invention,
  • la figure 16 représente de manière schématique un exemple de panneau principal présentant des reliefs,
  • la figure 17 représente de manière schématique un exemple de panneau principal muni de pions,
  • la figure 18 représente de manière schématique l'échangeur thermique, dont les portes sont en position ouverte.
Other characteristics and advantages will emerge from the description which follows, which is purely illustrative and non-limiting. It should be read with reference to the appended drawings, among which:
  • the figure 1 schematically represents, in perspective, a heat exchanger in accordance with one embodiment of the invention,
  • the picture 2 schematically represents the heat exchanger, in front view,
  • the picture 3 schematically shows the heat exchanger, in side view,
  • the figure 4 schematically represents the heat exchanger, seen from above,
  • the figure 5 is a sectional view, along the transverse section plane AA, of the heat exchanger,
  • the figure 6 is a sectional view, along the longitudinal section plane BB, of the heat exchanger,
  • the figure 7 is an exploded view of the heat exchanger of the figures 1 to 6 ,
  • the figures 8A and 8B schematically represent exchanger plates intended to be stacked with other identical plates in the heat exchanger,
  • the figure 9 schematically represents a first circulation path of a first fluid in the heat exchanger,
  • the figure 10 schematically represents a second circulation path of a second fluid in the heat exchanger,
  • the figure 11 schematically represents a longitudinal rib in accordance with a first embodiment of the invention,
  • the figure 12 schematically represents a longitudinal rib in accordance with a second embodiment of the invention,
  • the figure 13 schematically represents a longitudinal rib in accordance with a fourth embodiment of the invention,
  • the figures 14 and 15 schematically represent a longitudinal rib in accordance with a third embodiment of the invention,
  • the figure 16 schematically represents an example of a main panel with reliefs,
  • the figure 17 schematically represents an example of a main panel provided with pawns,
  • the figure 18 schematically shows the heat exchanger, the doors of which are in the open position.

DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

Sur les figures 1 à 7, l'échangeur thermique 1 représenté comprend deux pieds de support 2 et 3, un paquet de plaques d'échangeur 4, quatre collecteurs de fluide 5 à 8, deux plaques de compression 9 et 10, deux séries de tirants 11 et 12, deux cadres de support 13 et 14, deux joints 15 et 16 et deux portes latérales 17 et 18.On the figures 1 to 7 , the heat exchanger 1 represented comprises two support legs 2 and 3, a pack of exchanger plates 4, four fluid collectors 5 to 8, two compression plates 9 and 10, two sets of tie rods 11 and 12, two support frames 13 and 14, two joints 15 and 16 and two side doors 17 and 18.

Le paquet de plaques d'échangeur 4 comprend une pluralité de plaques d'échangeur 20 empilées les unes avec les autres et soudées entre elles.The pack of exchanger plates 4 comprises a plurality of exchanger plates 20 stacked with each other and welded together.

Dans l'exemple illustré sur les figures 1 à 7, les plaques 20 de l'empilement sont identiques entre elles, à l'exception d'une plaque d'extrémité 21.In the example shown on the figures 1 to 7 , the plates 20 of the stack are identical to each other, with the exception of an end plate 21.

Lorsque les plaques d'échangeur 20 sont empilées, le paquet de plaques 4 présente une face avant 22, une face arrière 23, opposée à la face avant 22, une première face latérale 24, une deuxième face latérale 25, opposée à la première face latérale 24, une face supérieure 26 et une face inférieure 27, opposée à la face supérieure 26.When the exchanger plates 20 are stacked, the pack of plates 4 has a front face 22, a rear face 23, opposite the front face 22, a first side face 24, a second side face 25, opposite the first face side 24, an upper face 26 and a lower face 27, opposite the upper face 26.

Les plaques d'échangeur 20 du paquet de plaques 4 délimitent entre elles des canaux de circulation de fluide. Plus précisément, les plaques d'échangeur délimitent entre elles deux canaux distincts de circulation dans lesquels peuvent circuler respectivement un premier fluide et un deuxième fluide, sans se mélanger.The exchanger plates 20 of the plate pack 4 delimit fluid circulation channels between them. More precisely, the exchanger plates delimit between them two separate circulation channels in which a first fluid and a second fluid can circulate respectively, without mixing.

Les deux plaques de compression 9 et 10 incluent une première plaque de compression 9 et une deuxième plaque de compression 10. Le paquet de plaques 4 est disposé entre les deux plaques de compression 9 et 10. Les plaques d'échangeur 20 du paquet de plaques 4 sont maintenues en compression les unes contre les autres par les plaques de compression 9 et 10. Plus précisément, la première plaque de compression 9 est disposée contre la face avant 22 du paquet de plaques 4 et la deuxième plaque de compression 10 est disposée contre la face arrière 23 du paquet de plaques 4. Une première série de tirants 11 s'étend le long de la face supérieure 26 et une deuxième série de tirants 12 s'étend le long de la face inférieure 27. Les tirants 11 et 12 relient la première plaque de compression 9 et la deuxième plaque de compression 10 entre elles, de manière à s'opposer aux efforts de dilatation pouvant être générés par les fluides circulant entre les plaques d'échangeur 20 et 21 du paquet de plaques 4. Chacune des extrémités des tirants est fixé à l'une des plaques de compression et les tirants 11, 12 peuvent être maintenus en tension au moyen d'écrous de serrage. De cette manière, les plaques de compression 9 et 10 exercent sur le paquet de plaque un effort de compression permanent tendant à maintenir les plaques d'échangeur 20, 21 en appui les unes contre les autres et à s'opposer à leur écartement.The two compression plates 9 and 10 include a first compression plate 9 and a second compression plate 10. The plate pack 4 is arranged between the two compression plates 9 and 10. The exchanger plates 20 of the plate pack 4 are held in compression against each other by the compression plates 9 and 10. More precisely, the first compression plate 9 is placed against the front face 22 of the pack of plates 4 and the second compression plate 10 is placed against the rear face 23 of the pack of plates 4. A first series of tie rods 11 extend along the upper face 26 and a second series of tie rods 12 extend along the lower face 27. The tie rods 11 and 12 connect the first compression plate 9 and the second compression plate 10 between them, so as to oppose the expansion forces that may be generated by the fluids circulating between the exchanger plates 20 and 21 of the plate pack 4. Each of the ends of the tie rods is fixed to one of the compression plates and the tie rods 11, 12 can be held in tension by means of tightening nuts. In this way, the compression plates 9 and 10 exert on the plate pack a permanent compressive force tending to keep the exchanger plates 20, 21 bearing against each other and to oppose their separation.

Chaque pied de support 2, 3 est propre à supporter les plaques de compression 9, 10 pour maintenir l'échangeur thermique 1 au-dessus du sol.Each support foot 2, 3 is capable of supporting the compression plates 9, 10 to maintain the heat exchanger 1 above the ground.

Les cadres de support 13, 14 incluent un premier cadre de support 13 et un deuxième cadre de support 14. Chacun du premier cadre de support 13 et du deuxième cadre de support 14 est fixé sur le paquet de plaques 4 ou sur les plaques de compression 9, 10, par exemple par soudage. Le premier cadre de support 13 est propre à entourer l'ensemble formé du paquet de plaques 4 et des deux plaques de compression 9, 10. Le premier cadre de support 13 s'étend autour de la première face latérale 24 du paquet de plaques 4. Le deuxième cadre de support 14 est propre à entourer l'ensemble formé du paquet de plaques 4 et des deux plaques de compression. Le deuxième cadre de support 14 s'étend autour de la deuxième face latérale 25 du paquet de plaques 4.The support frames 13, 14 include a first support frame 13 and a second support frame 14. Each of the first support frame 13 and the second support frame 14 is fixed to the plate pack 4 or the compression plates 9, 10, for example by welding. The first support frame 13 is able to surround the assembly formed by the pack of plates 4 and the two compression plates 9, 10. The first support frame 13 extends around the first lateral face 24 of the pack of plates 4 The second support frame 14 is able to surround the assembly formed by the pack of plates 4 and the two compression plates. The second support frame 14 extends around the second side face 25 of the stack of plates 4.

Les portes latérales 17, 18 incluent une première porte 17 montée rotative sur le premier cadre de support 13 et une deuxième porte 18 montée rotative sur le deuxième cadre de support 14. La première porte 17 peut être montée rotative sur le premier cadre de support 13 par le biais de premières charnières 31. La première porte 17 est mobile entre une position fermée, dans laquelle la première porte 17 recouvre la première face latérale 24 de l'empilement de plaques 4 et masque celle-ci, et une position ouverte, dans laquelle la première porte 17 ne recouvre pas la première face latérale 24 de l'empilement de plaques 4 et autorise un accès à celle-ci.The side doors 17, 18 include a first door 17 rotatably mounted on the first support frame 13 and a second door 18 rotatably mounted on the second support frame 14. The first door 17 can be rotatably mounted on the first support frame 13 by means of first hinges 31. The first door 17 is movable between a closed position, in which the first door 17 covers the first side face 24 of the stack of plates 4 and conceals the latter, and an open position, in which the first door 17 does not cover the first side face 24 of the stack of plates 4 and allows access thereto.

De même, la deuxième porte 18 peut être montée rotative sur le deuxième cadre 14 par le biais de deuxièmes charnières 32. La deuxième porte 18 est mobile entre une position fermée, dans laquelle la deuxième porte 18 recouvre la deuxième face latérale 25 de l'empilement de plaques 4 et masque celle-ci, et une position ouverte, dans laquelle la deuxième porte 18 ne recouvre pas la deuxième face latérale 25 de l'empilement de plaques 4 et autorise un accès à celle-ci.Likewise, the second door 18 can be rotatably mounted on the second frame 14 by means of second hinges 32. The second door 18 is movable between a closed position, in which the second door 18 covers the second side face 25 of the stack of plates 4 and conceals the latter, and an open position, in which the second door 18 does not cover the second side face 25 of the stack of plates 4 and allows access thereto.

La première porte 17 peut être verrouillée en position fermée, par le biais de vis 33, les vis 33 servant à visser la première porte 17 sur le premier cadre 13. De même, la deuxième porte 18 peut être verrouillée en position fermée, par le biais de vis 34, les vis 34 servant à visser la deuxième porte 18 sur le deuxième cadre 14.The first door 17 can be locked in the closed position, by means of screws 33, the screws 33 serving to screw the first door 17 onto the first frame 13. Similarly, the second door 18 can be locked in the closed position, by the through screws 34, the screws 34 serving to screw the second door 18 onto the second frame 14.

Les joints 15 et 16 incluent un premier joint 15 propre à être disposé entre la première porte 17 et la première face latérale 24 de l'empilement 4 et un deuxième joint 16 propre à être disposé entre la deuxième porte 18 et la deuxième face latérale 25 de l'empilement 4. Chaque joint 15, 16 peut être formé d'une feuille en matériau polymère. Le matériau polymère peut être un élastomère, par exemple un caoutchouc nitrile (acrylonitrile-butadiène), un caoutchouc EPDM (éthylène-propylène-diène monomère) ou un élastomère fluorocarboné. Les joints 15, 16 assurent une étanchéité périphérique de chaque plaque d'échangeur 20 et interdisent un écoulement des fluides d'un canal de circulation de fluide à l'autre.The seals 15 and 16 include a first seal 15 suitable for being placed between the first door 17 and the first side face 24 of the stack 4 and a second seal 16 suitable for being placed between the second door 18 and the second side face 25 of the stack 4. Each seal 15, 16 can be formed from a sheet of polymer material. The polymeric material can be an elastomer, for example a nitrile rubber (acrylonitrile-butadiene), an EPDM rubber (ethylene-propylene-diene monomer) or a fluorocarbon elastomer. The seals 15, 16 provide peripheral sealing of each exchanger plate 20 and prevent the flow of fluids from one fluid circulation channel to the other.

Les collecteurs 5 à 8 incluent un premier collecteur d'entrée 5, un premier collecteur de sortie 6, un deuxième collecteur d'entrée 7 et un deuxième collecteur de sortie 8.Collectors 5 to 8 include a first input collector 5, a first output collector 6, a second input collector 7 and a second output collector 8.

Le premier collecteur d'entrée 5 et le premier collecteur de sortie 6 sont propres à guider un premier fluide (par exemple un fluide froid) pour que le premier fluide circule à l'intérieur du paquet de plaques 4 dans un premier canal de circulation de fluide.The first inlet manifold 5 and the first outlet manifold 6 are suitable for guiding a first fluid (for example a cold fluid) so that the first fluid circulates inside the pack of plates 4 in a first circulation channel of fluid.

De même, le deuxième collecteur d'entrée 7 et le deuxième collecteur de sortie 8 sont propres à guider un deuxième fluide (par exemple un fluide chaud) pour que le deuxième fluide circule à l'intérieur du paquet de plaques 4 dans un deuxième canal de circulation de fluide, distinct du premier canal de circulation de fluide.Likewise, the second inlet manifold 7 and the second outlet manifold 8 are suitable for guiding a second fluid (for example a hot fluid) so that the second fluid circulates inside the pack of plates 4 in a second channel fluid circulation, separate from the first fluid circulation channel.

Dans l'exemple illustré sur les figures 1 à 7, le premier collecteur d'entrée 5 est fixé sur la face inférieure 27 du paquet de plaques 4 et le premier collecteur de sortie 6 est fixé sur la face supérieure 26 du paquet de plaques 4. Le deuxième collecteur d'entrée 7 est fixé sur la face supérieure 26 du paquet de plaques 4 et le deuxième collecteur de sortie 8 est fixé sur la face inférieure 27 du paquet de plaques 4.In the example shown on the figures 1 to 7 , the first inlet manifold 5 is fixed on the lower face 27 of the pack of plates 4 and the first outlet manifold 6 is fixed on the upper face 26 of the pack of plates 4. The second inlet manifold 7 is fixed on the upper face 26 of the pack of plates 4 and the second output manifold 8 is fixed to the lower face 27 of the pack of plates 4.

Le premier collecteur d'entrée 5 comprend une première tubulure d'entrée 35 propre à être raccordée à un premier conduit d'amenée du premier fluide et une première paroi 45 de collecteur d'entrée, présentant par exemple une forme générale en quart de cylindre de révolution, et une série de cloisons internes 55 s'étendant transversalement à l'axe du cylindre.The first inlet manifold 5 comprises a first inlet pipe 35 capable of being connected to a first conduit for supplying the first fluid and a first wall 45 of the inlet manifold, for example having the general shape of a quarter cylinder. of revolution, and a series of internal partitions 55 extending transversely to the axis of the cylinder.

Le premier collecteur de sortie 6 comprend une première tubulure de sortie 36 propre à être raccordée à un premier conduit d'extraction du premier fluide, une première paroi de collecteur de sortie 46, présentant par exemple une forme générale en quart de cylindre de révolution, et une série de cloisons internes 56 s'étendant transversalement à l'axe du cylindre.The first outlet manifold 6 comprises a first outlet pipe 36 capable of being connected to a first duct for extracting the first fluid, a first outlet manifold wall 46, having for example the general shape of a quarter cylinder of revolution, and a series of internal partitions 56 extending transversely to the axis of the cylinder.

Chaque cloison interne 55 du premier collecteur d'entrée 5 et chaque cloison interne 56 du premier collecteur de sortie 6 présente un bord libre s'étendant dans le même plan que la face latérale 24. Chaque bord libre est en contact avec le premier joint 16. De cette manière, les cloisons internes 55, 56 définissent avec le premier joint 15 des compartiments permettant de guider le premier fluide s'écoulant dans un espace entre deux plaques d'échangeur 20 vers un autre espace entre deux autres plaques d'échangeur.Each internal partition 55 of the first inlet manifold 5 and each internal partition 56 of the first outlet manifold 6 has a free edge extending in the same plane as the side face 24. Each free edge is in contact with the first seal 16 In this way, the internal partitions 55, 56 define with the first seal 15 compartments making it possible to guide the first fluid flowing in a space between two exchanger plates 20 towards another space between two other exchanger plates.

De même, le deuxième collecteur d'entrée 7 comprend une deuxième tubulure d'entrée 37 propre à être raccordée à un deuxième conduit d'amenée du deuxième fluide, une deuxième paroi de collecteur d'entrée 47, présentant par exemple une forme générale en quart de cylindre de révolution, et une série de cloisons internes 57 s'étendant transversalement à l'axe du cylindre.Similarly, the second inlet manifold 7 comprises a second inlet pipe 37 capable of being connected to a second conduit for supplying the second fluid, a second inlet manifold wall 47, for example having a generally quarter cylinder of revolution, and a series of internal partitions 57 extending transversely to the axis of the cylinder.

Le deuxième collecteur de sortie 8 comprend une deuxième tubulure de sortie 38 propre à être raccordée à un deuxième conduit d'extraction du deuxième fluide, une deuxième paroi de collecteur de sortie 48, présentant par exemple une forme générale en quart de cylindre de révolution, et une série de cloisons internes 58 s'étendant transversalement à l'axe du cylindre.The second outlet manifold 8 comprises a second outlet pipe 38 able to be connected to a second duct for extracting the second fluid, a second outlet manifold wall 48, for example having the general shape of a quarter cylinder of revolution, and a series of internal partitions 58 extending transversely to the axis of the cylinder.

Chaque cloison interne 57 du deuxième collecteur d'entrée 7 et chaque cloison interne 58 du deuxième collecteur de sortie 58 présente un bord libre s'étendant dans le même plan que la face latérale 24. Chaque bord libre est en contact avec le deuxième joint 16. De cette manière, les cloisons internes 57, 58 définissent avec le deuxième joint 16 des compartiments permettant de guider le deuxième fluide s'écoulant dans un espace entre deux plaques d'échangeur 20 vers un autre espace entre deux autres plaques d'échangeur.Each internal partition 57 of the second inlet manifold 7 and each internal partition 58 of the second outlet manifold 58 has a free edge extending in the same plane as the side face 24. Each free edge is in contact with the second seal 16 In this way, the internal partitions 57, 58 define with the second seal 16 compartments making it possible to guide the second fluid flowing in a space between two exchanger plates 20 to another space between two other exchanger plates.

Les plaques d'échangeur 20 incluent des premières plaques d'échangeur 20A et des deuxièmes plaques d'échangeurs 20B illustrées de manière schématique sur les figures 8A et 8B.The exchanger plates 20 include first exchanger plates 20A and second exchanger plates 20B illustrated schematically on the figures 8A and 8B .

La figure 8A représente de manière schématique une première plaque d'échangeur 20A destinée à guider le premier fluide.The figure 8A schematically represents a first exchanger plate 20A intended to guide the first fluid.

La première plaque d'échangeur 20A peut être formée en métal, par exemple en titane ou en acier inoxydable, tel qu'un acier inoxydable contenant du chrome et du molybdène qui augmentent la résistance à la corrosion, en nickel ou en un alliage contenant du Nickel et du Cuivre. Le choix du matériau de la plaque 20A dépend de la nature des fluides à traiter et de leur état (température, pression).The first exchanger plate 20A can be formed of metal, for example titanium or stainless steel, such as a stainless steel containing chromium and molybdenum which increase the resistance to corrosion, nickel or an alloy containing Nickel and Copper. The choice of material for plate 20A depends on the nature of the fluids to be treated and their state (temperature, pressure).

La première plaque d'échangeur 20A comprend un panneau principal 60, deux panneaux de jonction 61, 62 et des nervures 63, 64 s'étendant en saillie du panneau principal 60 et délimitant un chemin de circulation pour le fluide.The first exchanger plate 20A comprises a main panel 60, two junction panels 61, 62 and ribs 63, 64 projecting from the main panel 60 and delimiting a circulation path for the fluid.

Le panneau principal 60 présente une forme générale de rectangle. Le panneau principal 60 comprend une première face 65 et une deuxième face 66, opposée à la première face 65. La première face 65 et/ou la deuxième face 66 du panneau principal 60 peu(ven)t être lisse(s) ou présenter des reliefs favorisant la génération de turbulences dans le fluide. Le panneau principal 60 peut par exemple être formée à partir d'une tôle larmée ou striée.The main panel 60 has the general shape of a rectangle. The main panel 60 comprises a first face 65 and a second face 66, opposite the first face 65. The first face 65 and/or the second face 66 of the main panel 60 can be smooth or present reliefs favoring the generation of turbulence in the fluid. The main panel 60 can for example be formed from a teardrop or checker plate.

Le panneau principal 60 présente quatre bords 67 à 70. Le panneau principal 60 présente un premier bord 67, un deuxième bord 68, opposé au premier bord transversal 67, un troisième bord 69 et un quatrième bord 70, opposé au troisième bord 69.The main panel 60 has four edges 67 to 70. The main panel 60 has a first edge 67, a second edge 68, opposite the first transverse edge 67, a third edge 69 and a fourth edge 70, opposite the third edge 69.

Dans l'exemple illustré sur la figure 8A, le premier bord 67 et le deuxième bord 68 sont des bords transversaux, tandis que le troisième bord 69 et le quatrième bord 70 sont des bords longitudinaux.In the example shown in the figure 8A , the first edge 67 and the second edge 68 are transverse edges, while the third edge 69 and the fourth edge 70 are longitudinal edges.

Le premier bord 67 et le deuxième bord 68 sont parallèles entre eux. Le troisième bord 69 et le quatrième bord 70 sont parallèles entre eux, et sont perpendiculaires aux bords 67 et 68.The first edge 67 and the second edge 68 are parallel to each other. The third edge 69 and the fourth edge 70 are parallel to each other, and are perpendicular to the edges 67 and 68.

Les panneaux de jonction 61, 62 incluent un premier panneau de jonction 61 s'étendant à partir du troisième bord longitudinal 69 du panneau principal 60 et un deuxième panneau de jonction 62 s'étendant à partir du quatrième bord longitudinal 70 du panneau principal 60. Le premier panneau de jonction 61 et le deuxième panneau de jonction 62 peuvent être reliés au panneau principal 60 respectivement par une première ligne de pliure et par une deuxième ligne de pliure.Joint panels 61, 62 include a first joint panel 61 extending from the third longitudinal edge 69 of the main panel 60 and a second joint panel 62 extending from the fourth longitudinal edge 70 of the main panel 60. The first junction panel 61 and the second junction panel 62 can be connected to the main panel 60 respectively by a first fold line and by a second fold line.

Le premier panneau de jonction 61 présente une première ouverture 71 (ou ouverture d'entrée de fluide formée dans le premier panneau de jonction 61) permettant une entrée du fluide vers le chemin de circulation. Le deuxième panneau de jonction 62 présente une deuxième ouverture 72 (ou ouverture de sortie de fluide formée dans le deuxième panneau de jonction 62) permettant une sortie du fluide en provenance du chemin de circulation.The first junction panel 61 has a first opening 71 (or fluid inlet opening formed in the first junction panel 61) allowing fluid to enter the circulation path. The second junction panel 62 has a second opening 72 (or fluid outlet opening formed in the second junction panel 62) allowing fluid to exit from the circulation path.

La plaque d'échangeur 20A ne comprend pas de panneaux de jonction s'étendant à partir des bords transversaux 67 et 68 du panneau principal. Ainsi, les bords 67 et 68 du panneau principal 60 sont libres.The exchanger plate 20A does not include joint panels extending from the transverse edges 67 and 68 of the main panel. Thus, the edges 67 and 68 of the main panel 60 are free.

Les nervures 63, 64 s'étendent en saillie, à partir de la première face 65 du panneau principal 60. Les nervures 63, 64 constituent des entretoises permettant de maintenir un écartement entre deux panneaux principaux 60 de deux plaques d'échangeur adjacentes 20A et 20B et de résister aux efforts de compression pouvant s'exercer sur le paquet de plaques 4. A cet effet, chaque nervure 63, 64 est dimensionnée pour être en contact avec une deuxième face 66 d'un panneau principal 60 d'une plaque d'échangeur adjacente 20B dans l'empilement.The ribs 63, 64 extend projecting from the first face 65 of the main panel 60. The ribs 63, 64 constitute spacers making it possible to maintain a spacing between two main panels 60 of two adjacent exchanger plates 20A and 20B and to resist the compressive forces that can be exerted on the pack of plates 4. For this purpose, each rib 63, 64 is dimensioned to be in contact with a second face 66 of a main panel 60 of a plate of adjacent exchanger 20B in the stack.

Toutes les nervures 63, 64 s'étendent parallèlement les unes aux autres. Dans l'exemple illustré sur la figure 8, les nervures 63, 64 s'étendent parallèlement aux bords longitudinaux 69, 70 du panneau principal 60. La première plaque 20A ne comprend pas de nervures s'étendant parallèlement aux bords transversaux 67, 68.All the ribs 63, 64 extend parallel to each other. In the example shown in the figure 8 , the ribs 63, 64 extend parallel to the longitudinal edges 69, 70 of the main panel 60. The first plate 20A does not include ribs extending parallel to the transverse edges 67, 68.

Dans l'exemple illustré sur la figure 20A, les nervures 63, 64 incluent une pluralité de premières nervures 63 et une pluralité de deuxièmes nervures 64, les deuxièmes nervures 64 étant disposées en alternance avec les premières nervures.In the example illustrated in Figure 20A, the ribs 63, 64 include a plurality of first ribs 63 and a plurality of second ribs 64, the second ribs 64 being alternately disposed with the first ribs.

Chaque première nervure 63 s'étend depuis le premier bord transversal 67 du panneau principal 60 vers le deuxième bord transversal 68, sans toutefois s'étendre jusqu'au deuxième bord transversal 68. Chaque première nervure 63 ménage ainsi un premier passage de fluide entre une extrémité de la première nervure 63 et le deuxième bord transversal 68. A cet endroit, le chemin de circulation de fluide forme une première chicane.Each first rib 63 extends from the first transverse edge 67 of the main panel 60 towards the second transverse edge 68, without however extending as far as the second transverse edge 68. Each first rib 63 thus provides a first fluid passage between a end of the first rib 63 and the second transverse edge 68. At this point, the fluid circulation path forms a first baffle.

Chaque deuxième nervure 64 s'étend depuis le deuxième bord transversal 68 du panneau principal 60 vers le premier bord transversal 67, sans toutefois s'étendre jusqu'au premier bord transversal 67. Chaque deuxième nervure 64 ménage ainsi un deuxième passage de fluide entre une extrémité de la deuxième nervure 64 et le premier bord transversal 67. A cet endroit, le chemin de circulation de fluide forme une deuxième chicane.Each second rib 64 extends from the second transverse edge 68 of the main panel 60 towards the first transverse edge 67, without however extending as far as the first transverse edge 67. Each second rib 64 thus provides a second fluid passage between a end of the second rib 64 and the first transverse edge 67. At this point, the fluid circulation path forms a second baffle.

La première plaque d'échangeur comprend n+1 première nervures (n étant un entier supérieur ou égal à 0, de préférence supérieur ou égal à 1) et n deuxièmes nervures. Dans l'exemple illustré sur la figure 8, la plaque d'échangeur comprend 3 premières nervures 63 (n=2) et 2 deuxièmes nervures 64, chaque deuxième nervure 64 étant intercalée entre deux premières nervures 63.The first exchanger plate comprises n+1 first ribs (n being an integer greater than or equal to 0, preferably greater than or equal to 1) and n second ribs. In the example shown in the figure 8 , the exchanger plate comprises 3 first ribs 63 (n=2) and 2 second ribs 64, each second rib 64 being inserted between two first ribs 63.

La première ouverture 71 et la deuxième ouverture 72 sont agencées à proximité du premier bord transversal 67. La deuxième ouverture 72 est disposée en face de la première ouverture 71. Les deux ouvertures 71, 72 sont alignées l'une avec l'autre le long du premier bord transversal 67.The first opening 71 and the second opening 72 are arranged close to the first transverse edge 67. The second opening 72 is arranged opposite the first opening 71. The two openings 71, 72 are aligned with each other along of the first transverse edge 67.

Dans le mode de réalisation qui vient d'être décrit, le premier bord 67 et le deuxième bord 68 sont des bords transversaux tandis que le troisième bord 69 et le quatrième bord 70 sont des bords longitudinaux.In the embodiment which has just been described, the first edge 67 and the second edge 68 are transverse edges while the third edge 69 and the fourth edge 70 are longitudinal edges.

Alternativement, il serait également possible de réaliser une plaque d'échangeur dans laquelle le premier bord 67 et le deuxième bord 68 sont des bords longitudinaux tandis que le troisième bord 69 et le quatrième bord 70 sont des bords transversaux.Alternatively, it would also be possible to produce an exchanger plate in which the first edge 67 and the second edge 68 are longitudinal edges while the third edge 69 and the fourth edge 70 are transverse edges.

La figure 8B représente de manière schématique une deuxième plaque d'échangeur 20B destinée à guider un deuxième fluide. Dans le paquet de plaques 4, la deuxième plaque d'échangeur 20B est empilée avec la première plaque d'échangeur 20A de la figure 8A. La deuxième plaque d'échangeur 20B constitue une plaque d'échangeur adjacente à la première plaque d'échangeur 20A dans l'empilement 4.The figure 8B schematically represents a second exchanger plate 20B intended to guide a second fluid. In the pack of plates 4, the second exchanger plate 20B is stacked with the first exchanger plate 20A of the figure 8A . The second exchanger plate 20B constitutes an exchanger plate adjacent to the first exchanger plate 20A in the stack 4.

Dans l'exemple illustré sur les figures 8A et 8B, la deuxième plaque d'échangeur 20B est identique à la première plaque d'échangeur 20A. Cependant, dans l'empilement 4, la deuxième plaque d'échangeur 20B est orientée en étant tournée à 180° par rapport à la première plaque d'échangeur 20A, dans le plan de son panneau principal 60.In the example shown on the figures 8A and 8B , the second exchanger plate 20B is identical to the first exchanger plate 20A. However, in stack 4, second exchanger plate 20B is oriented by being rotated 180° relative to first exchanger plate 20A, in the plane of its main panel 60.

Le paquet de plaques 4 est obtenu en empilant une série de plaques incluant une pluralité de premières plaques 20A et une pluralité de deuxièmes plaques 20B, disposées en alternance avec les premières plaques 20A.The pack of plates 4 is obtained by stacking a series of plates including a plurality of first plates 20A and a plurality of second plates 20B, arranged alternately with the first plates 20A.

Dans l'empilement, les premiers bords transversaux 67 des premières plaques 20A sont disposés en registre avec les deuxièmes bords transversaux 68 des deuxièmes plaques 20B. Les premiers bords transversaux 67 des premières plaques 20A et les deuxièmes bords transversaux 68 des deuxièmes plaques 20B définissent ainsi la première face latérale 24 du paquet de plaques 4.In the stack, the first transverse edges 67 of the first plates 20A are arranged in register with the second transverse edges 68 of the second plates 20B. The first transverse edges 67 of the first plates 20A and the second transverse edges 68 of the second plates 20B thus define the first side face 24 of the pack of plates 4.

De même, les deuxièmes bords transversaux 68 des premières plaques 20A sont disposés en registre avec les premiers bords transversaux 67 des deuxièmes plaques 20B. Les deuxièmes bords transversaux 68 des premières plaques 20A et les premiers bords transversaux 67 des deuxièmes plaques 20B définissent ainsi la deuxième face latérale 25 du paquet de plaques 4.Similarly, the second transverse edges 68 of the first plates 20A are arranged in register with the first transverse edges 67 of the second plates 20B. The second transverse edges 68 of the first plates 20A and the first transverse edges 67 of the second plates 20B thus define the second side face 25 of the pack of plates 4.

Dans l'empilement, les troisièmes bords longitudinaux 69 des premières plaques 20A sont disposés en registre avec les quatrièmes bords longitudinaux 70 des deuxièmes plaques 20B. Les troisièmes bords longitudinaux 69 des premières plaques 20A et les quatrièmes bords longitudinaux 70 des deuxièmes plaques 20B définissent ainsi la face inférieure 27 du paquet de plaques 4.In the stack, the third longitudinal edges 69 of the first plates 20A are arranged in register with the fourth edges longitudinal 70 of the second plates 20B. The third longitudinal edges 69 of the first plates 20A and the fourth longitudinal edges 70 of the second plates 20B thus define the lower face 27 of the pack of plates 4.

De même, les quatrièmes bords longitudinaux 70 des premières plaques 20A sont disposés en registre avec les troisièmes bords longitudinaux 69 des deuxièmes plaques 20B. Les quatrièmes bords longitudinaux 70 des premières plaques 20A et les troisièmes bords longitudinaux 69 des deuxièmes plaques 20B définissent ainsi la face supérieure 26 du paquet de plaques 4.Similarly, the fourth longitudinal edges 70 of the first plates 20A are arranged in register with the third longitudinal edges 69 of the second plates 20B. The fourth longitudinal edges 70 of the first plates 20A and the third longitudinal edges 69 of the second plates 20B thus define the upper face 26 of the pack of plates 4.

La figure 9 illustre un premier chemin de circulation du premier fluide dans l'échangeur 1. Le premier fluide circule entre la première face 65 d'une première plaque d'échangeur 20A et la deuxième face 66 d'une deuxième plaque d'échangeur 20B.The figure 9 illustrates a first circulation path of the first fluid in the exchanger 1. The first fluid circulates between the first face 65 of a first exchanger plate 20A and the second face 66 of a second exchanger plate 20B.

Le premier fluide est injecté dans le premier chemin de circulation de fluide via le premier collecteur d'entrée 5. Le premier fluide circule depuis la première ouverture 71 jusqu'à la deuxième ouverture 72 entre les premières nervures 63 et les deuxièmes nervures 64 de la première plaque d'échangeur 20A, en contournant les extrémités des nervures 63, 64. Plus précisément, le premier fluide circule en alternance dans un premier sens (flèche A), selon une direction longitudinale du panneau principal 60, puis selon un deuxième sens (flèche B), opposé au premier sens, selon la direction longitudinale. Le premier chemin de circulation de fluide présente une succession de premières chicanes (flèche C) et de deuxièmes chicanes (flèche D), ce qui permet d'allonger le chemin d'écoulement du premier fluide le long de la première plaque d'échangeur 20A en évitant de créer des zones mortes et ainsi de favoriser des échanges de chaleur avec le deuxième fluide. Le premier fluide s'échappe via la deuxième ouverture 72 vers le premier collecteur de sortie 6. Le premier collecteur de sortie 6 guide le premier fluide pour l'injecter à nouveau entre deux plaques d'échangeur 20A et 20B.The first fluid is injected into the first fluid circulation path via the first inlet manifold 5. The first fluid circulates from the first opening 71 to the second opening 72 between the first ribs 63 and the second ribs 64 of the first exchanger plate 20A, bypassing the ends of the ribs 63, 64. More precisely, the first fluid circulates alternately in a first direction (arrow A), in a longitudinal direction of the main panel 60, then in a second direction ( arrow B), opposite to the first direction, in the longitudinal direction. The first fluid circulation path has a succession of first baffles (arrow C) and second baffles (arrow D), which makes it possible to lengthen the flow path of the first fluid along the first exchanger plate 20A avoiding the creation of dead zones and thus promoting heat exchange with the second fluid. The first fluid escapes via the second opening 72 towards the first outlet manifold 6. The first outlet manifold 6 guides the first fluid to inject it again between two exchanger plates 20A and 20B.

La figure 10 illustre un deuxième chemin de circulation du deuxième fluide dans l'échangeur. Le deuxième fluide circule entre la première face 65 d'une deuxième plaque d'échangeur 20B et la deuxième face 66 d'une première plaque d'échangeur 20A. Dans l'exemple illustré sur la figure 10, le deuxième fluide circule à contre-courant par rapport au premier fluide.The figure 10 illustrates a second circulation path of the second fluid in the exchanger. The second fluid circulates between the first face 65 of a second exchanger plate 20B and the second face 66 of a first exchanger plate 20A. In the example shown in the figure 10 , the second fluid circulates in counter-current relative to the first fluid.

Le deuxième fluide est injecté dans le deuxième chemin de circulation de fluide via le deuxième collecteur d'entrée 7. Le deuxième fluide circule depuis la première ouverture 71 jusqu'à la deuxième ouverture 72 entre les premières nervures 63 et les deuxièmes nervures 64 de la deuxième plaque d'échangeur 20B, en contournant les extrémités des nervures 63, 64. Plus précisément, le deuxième fluide circule en alternance dans le deuxième sens (flèche B), selon une direction longitudinale, puis selon le premier sens (flèche A), opposé au deuxième sens, selon la direction longitudinale. Le deuxième chemin de circulation de fluide présente une succession de premières chicanes (flèche E) et de deuxièmes chicanes (flèche F), ce qui permet d'allonger le chemin d'écoulement du deuxième fluide le long de la plaque d'échangeur 20B en évitant de créer des zones mortes et de favoriser des échanges de chaleur avec le premier fluide. Le deuxième fluide s'échappe via la deuxième ouverture 72 vers le deuxième collecteur de sortie 8. Le deuxième collecteur de sortie 8 guide le deuxième fluide pour l'injecter à nouveau entre deux plaques d'échangeur 20B et 20A.The second fluid is injected into the second fluid circulation path via the second inlet manifold 7. The second fluid circulates from the first opening 71 to the second opening 72 between the first ribs 63 and the second ribs 64 of the second exchanger plate 20B, bypassing the ends of the ribs 63, 64. More precisely, the second fluid circulates alternately in the second direction (arrow B), in a longitudinal direction, then in the first direction (arrow A), opposite to the second direction, in the longitudinal direction. The second fluid circulation path has a succession of first baffles (arrow E) and second baffles (arrow F), which makes it possible to lengthen the flow path of the second fluid along the exchanger plate 20B by avoiding creating dead zones and promoting heat exchange with the first fluid. The second fluid escapes via the second opening 72 towards the second outlet manifold 8. The second outlet manifold 8 guides the second fluid to inject it again between two exchanger plates 20B and 20A.

Les figures 11 à 15 illustrent plusieurs exemples de nervures 63 ou 64.The figures 11 to 15 illustrate several examples of ribs 63 or 64.

Selon un premier exemple illustré sur la figure 11, la nervure 63 présente une section transversale rectangulaire. La nervure 63 est fixée au panneau principal 60 via deux lignes de soudures 73 formées de part et d'autre de la nervure. Plus précisément, la nervure 63 est soudée à la première face 65 du panneau principal 60.According to a first example illustrated on the figure 11 , the rib 63 has a rectangular cross section. The rib 63 is fixed to the main panel 60 via two lines of welds 73 formed on either side of the rib. More precisely, the rib 63 is welded to the first face 65 of the main panel 60.

Selon un deuxième exemple illustré sur la figure 12, la nervure 63 présente une section transversale en I comprenant une âme centrale 74 et deux semelles 75, 76. La première semelle 75 est fixée au panneau principal 60 de la plaque d'échangeur 20 par deux lignes de soudure 73. Plus précisément, la première semelle 75 est fixée sur la première face 65 du panneau principal 60 de la plaque d'échangeur 20 et la deuxième semelle 76 est propre à être fixée sur la deuxième face 66 d'un panneau principal 60 d'une plaque d'échangeur adjacente.According to a second example illustrated on the figure 12 , the rib 63 has an I-shaped cross section comprising a central web 74 and two flanges 75, 76. The first flange 75 is fixed to the main panel 60 of the exchanger plate 20 by two weld lines 73. More specifically, the first flange 75 is fixed on the first face 65 of the main panel 60 of the exchanger plate 20 and the second sole 76 is adapted to be fixed on the second face 66 of a main panel 60 of an adjacent heat exchanger plate.

Selon un troisième exemple illustré sur la figure 13, la nervure 63 présente une section transversale en forme de x. La nervure 63 est formée de deux profilés 77, 78 présentant chacun une section transversale en forme de C, les deux profilés étant disposés l'un contre l'autre de manière symétrique. La nervure 63 est fixée au panneau principal 60 via une ligne de soudures 73 formée entre la première face 65 du panneau principal 60 et les deux profilés en C. Plus précisément, la nervure 63 est soudée à la première face 65 du panneau principal 60.According to a third example illustrated on the figure 13 , the rib 63 has an x-shaped cross-section. The rib 63 is formed of two sections 77, 78 each having a C-shaped cross-section, the two sections being arranged one against the other in a symmetrical manner. The rib 63 is fixed to the main panel 60 via a line of welds 73 formed between the first face 65 of the main panel 60 and the two C sections. More precisely, the rib 63 is welded to the first face 65 of the main panel 60.

Dans les trois exemples qui précèdent, la nervure 63 est formée par un profilé séparé rapporté sur le panneau principal 60 de la plaque d'échangeur 20.In the three examples above, the rib 63 is formed by a separate profile attached to the main panel 60 of the exchanger plate 20.

Selon un quatrième exemple illustré sur les figures 14 et 15, la nervure 63 est formée par emboutissage de la plaque d'échangeur 20. Le panneau principal 60 et les nervures 63, 64 sont ainsi formés en une seule pièce de matériau. La nervure 63 est propre à être jointe à la deuxième face 66 d'un panneau principal 60 d'une plaque d'échangeur adjacente, par exemple par une ligne de soudage s'étendant le long du sommet de la nervure 63.According to a fourth example illustrated on the figures 14 and 15 , the rib 63 is formed by stamping the exchanger plate 20. The main panel 60 and the ribs 63, 64 are thus formed in a single piece of material. The rib 63 is able to be joined to the second face 66 of a main panel 60 of an adjacent exchanger plate, for example by a welding line extending along the top of the rib 63.

La figure 16 représente de manière schématique un exemple de panneau principal 60 présentant des reliefs favorisant la génération de turbulences dans le fluide. Dans cet exemple, les reliefs comprennent des ondulations. Les ondulations comprennent des creux et des bosses s'étendant selon une direction générale parallèle aux nervures 63 et 64.The figure 16 schematically represents an example of main panel 60 having reliefs favoring the generation of turbulence in the fluid. In this example, the reliefs include undulations. The undulations include depressions and bumps extending in a general direction parallel to the ribs 63 and 64.

La figure 17 représente de manière schématique un exemple dans lequel l'échangeur thermique 1 comprend, en plus des nervures longitudinales 63, 64, des pions 79 s'étendant en saillie du panneau principal 60 et formant des entretoises supplémentaires permettant au paquet de plaques 4 de supporter des efforts de compression.The figure 17 schematically shows an example in which the heat exchanger 1 comprises, in addition to the longitudinal ribs 63, 64, studs 79 projecting from the main panel 60 and forming additional spacers allowing the pack of plates 4 to support compression forces.

Sur la figure 18, l'échangeur thermique 1 est représenté avec la première porte 17 et la deuxième porte 18 chacune en position ouverte.On the figure 18 , the heat exchanger 1 is shown with the first door 17 and the second door 18 each in the open position.

Comme cela est visible sur cette figure, une fois les portes 17 et 18 ouvertes, l'échangeur thermique 1 peut être facilement nettoyé. En effet, l'opérateur a accès directement aux espaces ménagés entres les plaques d'échangeur 20. Comme les nervures 63, 64 s'étendent parallèlement les unes aux autres, dans une direction orthogonale aux faces latérales 24, 25 du paquet de plaques 4, il est possible d'introduire un outil de nettoyage et/ou de faire passer un jet d'eau sous pression entre les plaques 20 depuis les faces latérales 24, 25, parallèlement aux nervures.As can be seen in this figure, once the doors 17 and 18 have been opened, the heat exchanger 1 can be easily cleaned. Indeed, the operator has direct access to the spaces between the exchanger plates 20. As the ribs 63, 64 extend parallel to each other, in a direction orthogonal to the side faces 24, 25 of the plate pack 4 , it is possible to introduce a cleaning tool and/or to pass a pressurized water jet between the plates 20 from the side faces 24, 25, parallel to the ribs.

En outre, comme cela est visibles sur la figure 15, le nettoyage de l'échangeur 1 peut être réalisé sans démonter les collecteurs 5 à 8.Furthermore, as seen in the figure 15 , the cleaning of the exchanger 1 can be carried out without dismantling the collectors 5 to 8.

Dans le mode de réalisation qui vient d'être décrit, chacune des premières plaques 20A et des deuxièmes plaques 20B comprend des nervures longitudinales 63, 64. Toutefois, il serait également possible de concevoir un empilement de plaques 4, dans lequel seules les premières plaques 20A comprennent des nervures longitudinales tandis que les deuxièmes plaques 20B sont dépourvues de nervures.In the embodiment which has just been described, each of the first plates 20A and of the second plates 20B comprises longitudinal ribs 63, 64. However, it would also be possible to design a stack of plates 4, in which only the first plates 20A include longitudinal ribs while the second plates 20B have no ribs.

Alternativement, il serait également possible de réaliser un empilement de plaques 4, dans lequel les premières plaques 20A comprennent uniquement des nervures longitudinales et les deuxièmes plaques 20B comprennent uniquement des nervures transversales, de sorte que les deux fluides s'écoulent selon des directions orthogonales à l'intérieur de l'échangeur thermique.Alternatively, it would also be possible to produce a stack of plates 4, in which the first plates 20A comprise only longitudinal ribs and the second plates 20B comprise only transverse ribs, so that the two fluids flow in directions orthogonal to inside the heat exchanger.

Claims (13)

  1. A plate (20) for a heat exchanger, intended to be disposed in a plate stack (4), the plate (20) comprising:
    - a main panel (60) having a first edge (67), a second edge (68), opposite to the first edge (67), a third edge (69), and a fourth edge (70), opposite to the third edge (69),
    - at least one first rib (63) protruding from the main panel (60) and able to delimit, with the main panel (60) and an adjacent plate, a fluid circulation path, and
    - a first junction panel (61) extending from the third edge (69),
    characterised in that the first rib (63) extends from the first edge (67) of the main panel (60) toward the second edge (68), without extending until the second edge (68), so as to provide a first fluid passage between one end of the first rib (63) and the second edge (68) where the fluid circulation path forms a first baffle (C), and in that the first junction panel (61) has a fluid inlet opening (71) allowing entry of the fluid to the circulation path.
  2. The plate according to claim 1, comprising at least one second rib (64) protruding from the main panel (60), extending parallel to the first rib (63), from the second edge (68) of the main panel (60) toward the first edge (67), without extending until the first edge (67), so as to provide a fluid passage between one end of the second rib (64) and the first edge (67) where the fluid circulation path forms a second baffle (D).
  3. The plate according to claim 2, comprising a plurality of first ribs (63) and a plurality of second ribs (64) disposed alternately with the first ribs (63).
  4. The plate according to one of claims 1 to 3, comprising a second junction panel (62) extending from the fourth edge (70), the second junction panel (62) having a fluid outlet opening (72) allowing fluid originating in the circulation path to exit.
  5. The plate according to one of claims 1 to 4, the plate (20) being devoid of a rib parallel to the first edge (67) delimiting the fluid circulation path.
  6. A heat exchanger (1) comprising:
    - a plate pack (4) comprising a plate stack (20) welded together, each plate (20) conforming to one of claims 1 to 5, the plate pack (4) comprising a first lateral face (24) defined by the first and second edges (67, 68) of the plates (20) of the stack, and a second lateral face (25) defined by the first and second opposite edges (67, 68) of the plates of the stack, and
    - a first door (17) movable in rotation relative to the plate pack (4), between a closed position in which the first door (17) covers the first lateral face (24) of the stack (4), and an open position in which the first door (17) does not cover the first lateral face (4) of the stack and allows access to spaces defined between the plates (20).
  7. The heat exchanger according to claim 6, further comprising a first fluid inlet collector (5) and a first fluid outlet collector (6), each of the first collectors (5, 6) being attached to a face of the stack (26, 27) orthogonal to the lateral faces (24, 25) and defined by the third and fourth edges (69, 70) of the plates of the stack (4).
  8. The heat exchanger according to claim 7, wherein each first collector (5, 6) comprises a first collector wall (45, 46) extending from the face of the stack (26, 27) orthogonal to the lateral faces (24, 25) until the first door (17), so that when the first door (17) is in the open position, the first door (17) allows access to an internal space of the first collector (5, 6) .
  9. The heat exchanger according to one of claims 6 to 8, further comprising a first gasket (15) able to be disposed against the first lateral face (24) of the stack (4), in contact with each of the first and second edges (67, 68) forming the first lateral face (24).
  10. The heat exchanger according to one of claims 6 to 9, further comprising a second door (18), movable in rotation relative to the plate pack (4), between a closed position in which the second door (18) covers the second lateral face (25) of the stack (4), and an open position in which the second door (18) does not cover the second lateral face (25) of the stack and allows access to spaces defined between the plates (20).
  11. The heat exchanger according to one of claims 6 to 10, further comprising a second fluid inlet collector (7) and a second fluid outlet collector (8), each of the second collectors (7, 8) being attached to a face of the stack (27) orthogonal to the lateral faces (24, 25) and defined by third and fourth edges (69, 70) of the plates (20) of the stack (4).
  12. The heat exchanger according to claims 10 and 11, wherein each second collector (7, 8) comprises a second collector wall (47, 48) extending from the face of the stack (26, 27) orthogonal to the lateral faces (24, 25) until the second door (18), so that when the second door (18) is in the open position, the second door (18) allows access to an internal space of the second collector (7, 8).
  13. The heat exchanger according to one of claims 6 to 12, comprising a second gasket (16) able to be disposed against the second lateral face (25) in contact with each of the first and second edges (67, 68) forming the second lateral face (25).
EP19737519.9A 2018-07-05 2019-07-05 Plate for a heat exchanger and heat exchanger comprising the plate Active EP3818319B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1856214A FR3083597B1 (en) 2018-07-05 2018-07-05 PLATE FOR HEAT EXCHANGER AND HEAT EXCHANGER INCLUDING THE PLATE
PCT/EP2019/068157 WO2020008055A1 (en) 2018-07-05 2019-07-05 Plate for heat exchanger and heat exchanger including the plate

Publications (2)

Publication Number Publication Date
EP3818319A1 EP3818319A1 (en) 2021-05-12
EP3818319B1 true EP3818319B1 (en) 2022-04-20

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Application Number Title Priority Date Filing Date
EP19737519.9A Active EP3818319B1 (en) 2018-07-05 2019-07-05 Plate for a heat exchanger and heat exchanger comprising the plate

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US (1) US11333450B2 (en)
EP (1) EP3818319B1 (en)
FR (1) FR3083597B1 (en)
WO (1) WO2020008055A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020009997A1 (en) 2018-07-05 2020-01-09 Modine Manufacturing Company Battery cooling plate and fluid manifold
US11316216B2 (en) * 2018-10-24 2022-04-26 Dana Canada Corporation Modular heat exchangers for battery thermal modulation

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR694608A (en) * 1929-04-29 1930-12-05 Ste Ind Chim Bale New hot plate
US1962954A (en) * 1931-11-11 1934-06-12 Soc Of Chemical Ind Hollow heat exchange plate
US3181602A (en) * 1961-06-05 1965-05-04 Davidson & Co Ltd Heat exchangers
US3986549A (en) * 1975-07-14 1976-10-19 Modine Manufacturing Company Heat exchanger
SE461610B (en) * 1984-02-24 1990-03-05 Stubinen Utvecklings Ab REMOVABLE PLATE HEAT EXCHANGER WHEN CHANNELS DESIGN CAN BE VARIOUS
GB2251061A (en) * 1990-12-17 1992-06-24 Stubinen Utvecklings Ab Apparatus for heat exchange between different liquid media
US6190624B1 (en) * 1998-09-08 2001-02-20 Uop Llc Simplified plate channel reactor arrangement
JP4312339B2 (en) * 2000-02-24 2009-08-12 ナブテスコ株式会社 Heat transfer device with meandering passage
CA2392610C (en) * 2002-07-05 2010-11-02 Long Manufacturing Ltd. Baffled surface cooled heat exchanger
WO2011022738A1 (en) * 2009-08-27 2011-03-03 Gerhard Kunze Liquid-gas heat exchanger
CN107024124B (en) * 2016-02-01 2023-09-08 天津华赛尔传热设备有限公司 Corrugated plate bundle of single-side contactless straight-through runner
CN108120327B (en) * 2018-01-19 2023-12-05 佛山市科蓝环保科技股份有限公司 Plate heat exchanger

Also Published As

Publication number Publication date
FR3083597A1 (en) 2020-01-10
EP3818319A1 (en) 2021-05-12
FR3083597B1 (en) 2021-01-22
US11333450B2 (en) 2022-05-17
US20210156628A1 (en) 2021-05-27
WO2020008055A1 (en) 2020-01-09

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