EP1870658A1 - Échangeur de chaleur et son procédé de fabrication - Google Patents

Échangeur de chaleur et son procédé de fabrication Download PDF

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Publication number
EP1870658A1
EP1870658A1 EP06012575A EP06012575A EP1870658A1 EP 1870658 A1 EP1870658 A1 EP 1870658A1 EP 06012575 A EP06012575 A EP 06012575A EP 06012575 A EP06012575 A EP 06012575A EP 1870658 A1 EP1870658 A1 EP 1870658A1
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EP
European Patent Office
Prior art keywords
manifold
heat exchanging
module
heat exchanger
modules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06012575A
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German (de)
English (en)
Inventor
Andrzej Adam Krupa
Adam Maciej Graczyk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP06012575A priority Critical patent/EP1870658A1/fr
Publication of EP1870658A1 publication Critical patent/EP1870658A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—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
    • F28F2275/14—Fastening; Joining by using form fitting connection, e.g. with tongue and groove

Definitions

  • the invention relates to a heat exchanger including at least one heat exchanging core, having a number of substantially flat heat exchanging tubes disposed in parallel at a spacing, and at least one manifold fluidly connected with said at least one heat exchanging core and to a method of manufacturing such a heat exchanger.
  • manifolds are produced by bending and welding flat aluminium sheets or by extruding aluminium profiles. Although these methods are relatively simple and efficient, they are not flexible, as in order to change the manifold dimensions e.g. to reflect the requirements of another installation the heat exchanger is going to be applied, it is necessary to change the relatively complicated tools, such us stamps and dies, employed to manufacture the manifolds.
  • Heat exchangers made by extrusion or by bending and welding processes may not however be suitable in high pressure installations such as A/C automotive installation with the CO 2 heat exchanging medium, where the high pressure resistance is required. Due to technological conditions, it is difficult here to produce a manifold having appropriate wall thickness or to provide manifold with internal ribs or reinforcements. The last problem applies in particular to manifolds being bended and welded.
  • the heat exchangers made by known methods do not enable to easily change the manner in which the heat exchanging medium passes through the heat exchanger (a so called pass arrangement).
  • the object of the present invention is to provide a heat exchanger having an improved, flexible, compact construction, being readily adjustable with respect to required manifold dimensions and pass arrangement and featuring improved mechanical and pressure durability, as well as vibration resistance.
  • An object of the invention is also providing a method of producing a heat exchanger of this type.
  • a heat exchanger having at least one manifold formed as a stack of manifold modules, where each manifold module comprises the first face having a flat portion provided with at least one convex portion and/or at least one concave portion and at least one recessed portion opening at the front face of the module, said recessed portion having the width corresponding to that of a tube of a heat exchanging core and matching a part of the transverse cross section of said tube, and the second face having a flat portion provided with at least one convex portion and/or at least one concave portion, in configuration complementary with said at least one convex portion and/or at least one concave portion of the first face, and at least one recessed portion opening at the front face of the module, said recessed portion having the width corresponding to that of a tube of a heat exchanging core and matching a part of the transverse cross section of said tube, wherein said at least one convex portion of a face of a manifold module is located in said at least
  • At least one chamber of at least one manifold module is separated by partition in a plane parallel to the tubes.
  • a heat exchanger comprising only one manifold fluidly connected with said at least one heat exchanging core, which is formed by a stack of manifold modules, and each cooling core tube is at one end fluidly connected with the manifold, bent substantially in the middle of its length to form a U-shaped tubular arrangement, and fluidly connected with the manifold at the other end, wherein the heat exchanging means are placed within the tubular arrangements of each tube and between adjacent tubular arrangements, where a number of a manifold modules is provided with partitions in a plane parallel to the tubes, which define the required pass arrangement through said at least one heat exchanging core.
  • thermodynamical features of the whole heat exchanger are largely improved. It is worth noting here, that according to the inventive construction of the heat exchanger, it is possible to employ the manifold modules having shapes and construction different to that described above. Applicable embodiments of manifold modules may be provided e.g. with slots for the heat exchanging tubes cut in the front face of each module instead of between top and bottom faces of two adjacent modules. Nevertheless, the application of the inventive manifold modules discussed above and, in particular, effortlessness of providing modules with horizontal partitions makes their use advantageous.
  • At least one manifold module is provided with at least one internal rib forming a module reinforcement and/or partition.
  • the rib may form a partition dividing a chamber of a manifold module into at least one pipe chamber, for receiving from and directing the heat exchanging medium to the heat exchanging tubes, and at least one separate main chamber.
  • the ribs further advantageously enable to form a heat exchanger comprising at least two heat exchanging cores, where the chambers of the modules are separated by partitions. If appropriate, at least one of these partitions may be provided with passage.
  • Such a heat exchanger is appropriate as an integrated heat exchanger, such us motor vehicle heating, ventilation and air conditioning integrated unit.
  • the manifold may advantageously be closed with closing caps inserted into outlines of chambers of the topmost and the bottommost manifold modules.
  • the front faces of the manifold modules are preferably at least one-sidedly slanted with respect to the longitudinal axis of the heat exchanging tube.
  • the manifold modules are shaped by stamping, cold forming or impact extruding and, if appropriate, piercing or punching the module in order to form hollow chambers.
  • the area of the apertures defined by the recessed portions of adjacent manifold modules in a plane perpendicular to the longitudinal axis of the heat exchanging tubes is greater at the outlet of the aperture than inside the module.
  • the recessed portions are provided with grooves formed in the inner hips of the flat portions.
  • manifold modules are provided with at least one guiding lock.
  • the lock may also be formed by appropriate configuration of complementary convex and concave portions of adjacent faces of manifold modules.
  • a method of manufacturing a heat exchanger comprising at least one heat exchanging core comprising a number of substantially flat heat exchanging tubes disposed in parallel at a spacing and at least one manifold fluidly connected with said at least one heat exchanging core, where each manifold is formed by a stack of manifold modules, which method comprises the following steps:
  • the outline defining step (i) advantageously involves cutting substantially flat sheet of metal coated at the top and at the bottom by a brazing layer to achieve the basic outline of the manifold module.
  • the outline defining step (i) preferably involves cutting slices from a metal bar having the basic outline of the manifold module and subsequently coating the slices by a brazing agent or inserting the brazing layers on both faces of each element prior the shaping step (ii).
  • the shaping step (ii) of the method of the present invention preferably involves (a) stamping, cold forming or impact extruding the elements formed in step (i) and, if appropriate, (b) piercing or punching the module in order to form a hollow chambers.
  • the step (vi) of joining said at least manifold with said at least one core is performed simultaneously layer by layer with the step (iii) of stacking the manifolds modules, the step (v) of stacking said at least one heat exchanging core and the step (iv) of closing the topmost and the bottommost manifold modules.
  • the heat exchanger of the invention may form a single, in particular, one core unit, such as motor vehicle radiator, A/C evaporator or gas cooler or an integrated unit, such as heating, ventilation and air conditioning (HVAC) unit, integrated motor vehicle condenser, radiator, cooling fan module (CRFM) and so on.
  • HVAC heating, ventilation and air conditioning
  • CRFM cooling fan module
  • cooling core refers to a stack tubes of disposed in parallel at a spacing, with heat exchanging means, preferably in a form of a cooling fins or corrugated tape, placed between the tubes. It is to be understood that two or more cooling cores may be interlinked by a common manifold, as well as common heat exchanging means.
  • a heat exchanger 1 a shown in Fig. 1 is an automotive air condition evaporator. It comprises the first and the second manifold 2a and 2b which are fluidly connected with two heat exchanging cores 3a and 3b. As indicated by arrows, the refrigerant flows into the manifold 2a through an inlet opening 4, then through the stack of parallel heat exchanging tubes 5a to the second manifold 2b and back through the stack of parallel heat exchanging tubes 5b to the manifold 2a to leave the evaporator via an outlet opening 6.
  • the heat exchanging cores 3a and 3b comprise respectively a plurality of parallel layers of heat exchanging tubes 5a and 5b and common stripes of heat exchanging fins 7 arranged interchangeably between each two pairs of tubes 5a and 5b, so that each layer comprises two parallel, coplanar tubes 5a and 5b and one stripe of fins 7.
  • the manifold 2a is formed by a stack of plurality (in this case 15) manifold modules 8a fluidly connected with opposite ends of each tube 5a and 5b inserted into appropriate apertures of the manifold 2a.
  • the manifold 2a is closed at the top by pipe fittings 9 and at the bottom by module 8d.
  • the modules 8a and 8d are separated in the middle by a vertical partition enforcing the required flow of refrigerant and reinforcing the structure of the manifold 2a.
  • the manifold 2b is formed by a stack of fourteen manifold modules 8b and closed at the top and at the bottom by modules 8c.
  • the vertical partition does not separate the modules 8b and 8c entirely, serving only as a reinforcing rib and enabling the flow of heat exchanging medium between the heat exchanging cores 3a and 3b.
  • Configurations of the top and bottom faces of each heat exchanger module are complementary in such a way that the top face of one module adheres to the bottom face of a neighbouring module placed directly above it in the stack.
  • the inlet and outlet openings of the heat exchanger of the invention may be connected to the heat exchanger in various ways, e.g. to the top module of one manifold, to the top modules of opposite manifolds, to the top and bottom modules of one manifold, to a module within the stack of modules forming a manifolds, etc.
  • Fig. 2 shows detailed top view of the manifold module 8a.
  • the module has been cut to achieve its basic outline from a flat aluminium sheet of a thickness h coated at the top and at the bottom by layers of brazing flux clad.
  • the basic outline of the module may also be produced e.g. by cutting slices of a width h from an aluminium bar already having an appropriate profile.
  • the clad surface is obtained e.g. by coating the slices with a brazing flux clad, inserting clad strips on both faces of the module prior its shaping or any other suitable method of clad treatment.
  • the next steps of manufacturing the module involve its shaping e.g. by stamping, cold forming or impact extruding and, where it is necessary, piercing or punching the module in order to form a hollow chambers.
  • the top face of the module 8a comprises a flat portion 11 provided with convex peripheral rim 12, which begins and ends at the front face 10 of the module 8a and surrounds the side wall 13 of the module.
  • the flat portion 11 further forms a partition 14 separating the module into the two chambers 15a and 15b, which pass through the module and are separated by reinforcing ribs 16.
  • the flat portion 11 is provided with top recessed portions 17a and 17b defining the bottom parts of apertures for the ends of heat exchanging tubes 5a and 5b.
  • the width and the shape of recessed portions 17a and 17b match the widths and shapes of the exchanging tubes 5a and 5b.
  • the longitudinal sections of recessed portions 17a and 17b match the one half of the transverse section of the heat exchanging core tubes 5a and 5b.
  • the width "a" of the part of an aperture formed by the recessed portion 17b is larger then the width "c" of the chamber 15b, so that grooves 18b are formed in the inner hips of the flat portion 11.
  • the grooves 18b increase the surface of junction between the tubes 5b and the manifold 2a so that the joint between tube and a stacked manifold is more rigid and the whole construction of the heat exchanger is more durable.
  • the grooves 18b limit the insertion depth of the tubes inside the manifold 2a.
  • Similar groves 18a are formed in the recessed portion 17a of the chamber 15a.
  • the peripheral rim 12 is also provided with locks 19a and 19b.
  • the second or, as in this embodiment, the bottom face of the module 8a also comprises a flat portion 20 with a partition 21 separating the module chambers 15a and 15b.
  • the flat portion 20 is substantially coplanar with the surface of the aluminium sheet or slice that formed the basic outline of the module prior the shaping step.
  • a concave peripheral recess 22 surrounding the side wall 13 of the module and complementary to the peripheral rim 12 of the top face of the module, as well as bottom recessed portions 23a and 23b defining the bottom parts of apertures for the ends of heat exchanging tubes 5a and 5b, have been formed.
  • the bottom recessed portions 23a and 23b are of the same shape as the top recessed portions 17a and 17b respectively, and are provided with an analogous set of grooves 24a and 24b stamped in the inner hips of the flat surface 20.
  • the peripheral recess 22 is also provided with a female lock 25a in the form of a semicircular convexity and two locks 25b, all of the shape and site complementary to the male locks 19a and 19b of the top face.
  • the locks provide boundary constrains between the neighbouring modules in the manifold stack and thus facilitate the assembly of a heat exchanger.
  • Fig. 4 schematically shows a "sandwich type" method of assembling the evaporator shown in Fig. 1.
  • Each layer of the exchanger is assembled manually or automatically on the top of the stack of already assembled layers.
  • the process begins with the bottom modules 8c and 8d provided with horizontal partitions.
  • To form the first layer first a pair of the tubes 5a and 5b is placed in appropriate top recessed portions of the top face of corresponding bottom manifold modules 8d and 8c then the stripe 7 of the heat exchanging fins and the next pair of manifold modules 8a and 8b is stacked on the top of the tubes, and so forth up to the topmost layer.
  • the assembling is finished after closing the manifold 2a by the pipe fittings 9 and manifold 2b by module 8c.
  • the peripheral rims 12, the peripheral recesses 22 and the locks 19, 25 ensure the precise stacking of the manifold by blocking the relative movement of the modules in a plane perpendicular to the manifold longitudinal axis.
  • Fig. 5 shows another, "load type” method of assembling the heat exchanger according to the invention, which advantageously enables to employ existing stacking machines.
  • the cores 3a and 3b, as well as the manifolds 2a and 2b are assembled separately, and the whole unit is mounted by pressing the manifolds 2a and 2b onto the cores in a direction parallel to the longitudinal axis of the tubes 5a and 5b.
  • the ends of grooves of the recessed portions of the manifold modules ensure that the tubes shall be correctly inserted inside the apertures formed by the top and the bottom recessed portions 17 and 23.
  • the manifolds 2a and 2b are closed by closing caps 26 pushed in the chambers 15a and 15b of the modules 8a and 8b.
  • the caps 26 and the pipe fittings 9 are made from fragments of an aluminium pipe covered by a brazing agent and shaped to correspond to the outline of the chambers 15a or 15b of the modules at one end.
  • the caps 26 are clamped at the end to form a closing sealing.
  • the heat exchanger 1 After assembling the heat exchanger 1, it is placed inside an oven where it is brazed, preferably in a so called one shot brazing. During this process the clad fills the gaps between the peripheral rims 12 and the peripheral recesses 22 of each two adjacent modules, which substantially increase the pressure tightness of manifolds.
  • Figs. 6 to 7 show the construction of the manifold module 8c employed as a closing module of a heat exchanger shown in Fig. 1 and Fig. 4.
  • the chambers of the module 8c are provided with horizontal partitions 27a and 27b disallowing the vertical flow of heat exchanging medium. Instead it may freely flow through the passage 28 or 29, which is formed as recessed portion respectively in the partitions 14 and 21.
  • Fig. 9 shows an embodiment of a serpentine heat exchanger 1c of the present invention forming an automotive A/C evaporator.
  • modules 8 are not required, their features discussed above are advantageous.
  • the evaporator 1 c comprises only one manifold 2, formed as a stack of manifold modules 8e - 8h.
  • Each heat exchanging tube is bent in the middle of its length, forming a U-shaped tubular arrangement fluidly connected with the manifold at its both ends.
  • the arrangements are disposed in parallel at a spacing one on another forming two cores (only the first core 3c is shown in the drawing).
  • the heat exchanging means in a form of heat exchanging fins 7 are placed inside the spaces defined by each tubular arrangement, as well as between each two adjacent tubes 5c.
  • the whole unit is additionally supported by a clamp 30 fixed to the topmost module 8h and to the bottommost module 8g in a manner not discussed in detail.
  • Modules 8e - 8h are appropriately provided with horizontal and/or vertical partitions defining the required flow of heat exchanging medium.
  • Fig. 10 shows a top view of the module 8e.
  • the chamber of the module is additionally divided into two pipe chambers 15c and 15d and one main chamber 15e separated by reinforcing ribs 16.
  • Partition 14 separates the pipe chambers 15c and 15d, while additional partition 31 isolates the pipe chambers from the main chamber 15e.
  • the top face of the module further comprises a male arrow shaped lock 19c complementary with a female lock of the bottom face (not shown).
  • the heat exchanging medium flows through the inlet opening 4 to the right (relative to Fig. 9) portion of the main chamber 15e of the module 8h having the left portion of the main chamber 15e separated by vertical partition.
  • the medium starts to flow at the whole width of the main chamber 15e through all modules of the manifold 2 to the bottommost module 8g having a vertical partition closing all the module chambers 15c, 15d and 15e at the bottom.
  • the module 8g does not comprise the partition 31, so the heat exchanging medium may freely flow to the pipe chambers 15c and 15d.
  • Modules 8f are provided with vertical partitions separating the top and the bottom portions of the pipe chambers 15c and 15d, to receive and direct the medium to the pipes of the two cooling cores instead of adjacent modules 8e.
  • the medium enters the pipe chambers 15c and 15d of the module 8f at the top, flows to the pipe chambers of the topmost module 8h where it is directed to the top portion of the left main chamber 15e, above the vertical partition, separating the left portion of the main chamber 15e of the module 8h, and received via the outlet opening 6.
  • Other possible pass arrangements shall be readily visible to a skilled technician.
  • FIG. 11 Another embodiment of the manifold module 8i is shown in Fig. 11, where the main chambers 15f and 15g form two circular distribution canals. In this embodiment however each main chamber 15f and 15g is joined with the appropriate pipe chamber 15c or 15d, which are separated with partition 21.
  • the module 8i may also be employed to form a manifold of a serpentine heat exchanger similar to that of Fig. 9, having the inlet and outlet openings e.g. at the opposite sides of the single manifold.
  • the module 18i is further provided with a pair of locks 19d close to the edge of the recess 22 which matches the female locks (not shown) formed in the rim of the other face of the module.
  • the recessed portions 23a and 23b of the module 8i are chamfered at the front face 10 of the module so that that width of the apertures for the heat exchanging tubes, defined by the recessed portions 17 and 23 of adjacent modules 8i is greater at the outlet of the aperture than inside the module (a 1 > a). This feature facilitates sliding-in the tubes inside the manifold.
  • Fig. 12 shows yet another embodiment of a manifold module 8j employed to manufacture a gas cooler of an A/C installation having only one cooling core.
  • the modules 8j are of a semicircular cross-section and are provided with only one chamber 15 separated in the middle by partition 16 and opening into the apertures for the cooling core tubes formed by the bottom and the top recessed portions 17 and 23.
  • the guiding grooves are not present in this embodiment as the insert constraint for the tubes is formed simply by the curvature of the inner wall of the chamber 15.
  • the top face of the module is provided both with a chamfered convex rim 12a and a concave portion 22a.
  • the convex rim 12a of the top face of the module 8j surrounds the concave portion 22b of the bottom face of an adjacent module stacked at the top of this one.
  • the concave portion 22a of the top face of the module 8j is surrounded by the convex rim 12b of the bottom face of an adjacent module in a stack.
  • the flat portions 11 a and 20a are separated with the convex lock 19e, while the flat portions 11 b and 20b are separated with a corresponding concave lock (not shown).
  • the recessed portions 17 and 23 widen conically toward the front face 10 of the module, so that an angle "b 1 " is created. This feature facilitates the process of inserting the heat exchanging tubes, which is advantageous, in particular in a load type method shown in Fig.5.
  • Fig. 13 presents top view of one more embodiment of a manifold module 8k for a heat exchanger with two cooling cores.
  • the front face 10 of the module is symmetrically slanted from both sides with respect to plane perpendicular to the longitudinal axis of the cooling core tubes, depicted on the drawing by a dashed line.
  • a cross-section of a heat exchanger 1d having manifolds formed as a stack of modules 8k is shown schematically in Fig. 14.
  • the heat exchanger 1d of this type operates as an air flow reducer, behaving similarly to the diffuser, as the air flowing through the cooling cores 3a and 3b is compressed behind the core 3a and decompressed behind the core 3b.
  • Rising air flow speed removes water or ash accumulated between the cooling core tubes, so that retention of these substances in the heat exchanging core may be substantially reduced or even avoided.
  • the module 8k When applied in an A/C evaporator, the module 8k also decreases or even eliminates a problem of odour occurrence or freezing phenomenon.
  • Heat exchangers of this type may also be installed in the vertical position, i.e. such that the manifolds are mounted horizontally. It should be noted that to achieve the foregoing results it is sufficient if the manifold module is slanted only from one side.

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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)
EP06012575A 2006-06-20 2006-06-20 Échangeur de chaleur et son procédé de fabrication Withdrawn EP1870658A1 (fr)

Priority Applications (1)

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EP06012575A EP1870658A1 (fr) 2006-06-20 2006-06-20 Échangeur de chaleur et son procédé de fabrication

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EP1870658A1 true EP1870658A1 (fr) 2007-12-26

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108992A1 (fr) * 2009-03-26 2010-09-30 Valeo Systemes Thermiques Echangeur de chaleur, en particulier condenseur de climatisation
FR2962200A1 (fr) * 2010-06-30 2012-01-06 Valeo Systemes Thermiques Unite d'echange d'un faisceau d'echange d'un echangeur de chaleur de, faisceau d'echange et echangeur de chaleur
WO2013040707A1 (fr) * 2011-09-19 2013-03-28 Heat-Line Corporation Unité modulaire de transfert d'énergie à orifice d'entrée commun et à orifice de sortie commun
FR3045805A1 (fr) * 2015-12-21 2017-06-23 Valeo Systemes Thermiques Echangeur thermique, notamment pour vehicule automobile
FR3045800A1 (fr) * 2015-12-21 2017-06-23 Valeo Systemes Thermiques Echangeur thermique, notamment pour vehicule automobile
CN110530178A (zh) * 2019-09-27 2019-12-03 浙江银轮机械股份有限公司 换热层、芯子及换热器
CN115200266A (zh) * 2021-04-09 2022-10-18 东芝开利株式会社 热交换器及制冷循环装置

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WO2010108992A1 (fr) * 2009-03-26 2010-09-30 Valeo Systemes Thermiques Echangeur de chaleur, en particulier condenseur de climatisation
FR2943776A1 (fr) * 2009-03-26 2010-10-01 Valeo Systemes Thermiques Echangeur de chaleur, en particulier condensateur de climatisation
FR2962200A1 (fr) * 2010-06-30 2012-01-06 Valeo Systemes Thermiques Unite d'echange d'un faisceau d'echange d'un echangeur de chaleur de, faisceau d'echange et echangeur de chaleur
WO2013040707A1 (fr) * 2011-09-19 2013-03-28 Heat-Line Corporation Unité modulaire de transfert d'énergie à orifice d'entrée commun et à orifice de sortie commun
FR3045805A1 (fr) * 2015-12-21 2017-06-23 Valeo Systemes Thermiques Echangeur thermique, notamment pour vehicule automobile
FR3045800A1 (fr) * 2015-12-21 2017-06-23 Valeo Systemes Thermiques Echangeur thermique, notamment pour vehicule automobile
WO2017109354A1 (fr) * 2015-12-21 2017-06-29 Valeo Systemes Thermiques Échangeur thermique, notamment pour véhicule automobile
WO2017109349A1 (fr) * 2015-12-21 2017-06-29 Valeo Systemes Thermiques Échangeur thermique, notamment pour véhicule automobile
CN110530178A (zh) * 2019-09-27 2019-12-03 浙江银轮机械股份有限公司 换热层、芯子及换热器
CN115200266A (zh) * 2021-04-09 2022-10-18 东芝开利株式会社 热交换器及制冷循环装置
CN115200266B (zh) * 2021-04-09 2024-03-26 东芝开利株式会社 热交换器及制冷循环装置

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