EP1530701B1 - Echangeur de chaleur, en particulier evaporateur pour installation de climatisation d'un vehicule - Google Patents

Echangeur de chaleur, en particulier evaporateur pour installation de climatisation d'un vehicule Download PDF

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Publication number
EP1530701B1
EP1530701B1 EP03762629.8A EP03762629A EP1530701B1 EP 1530701 B1 EP1530701 B1 EP 1530701B1 EP 03762629 A EP03762629 A EP 03762629A EP 1530701 B1 EP1530701 B1 EP 1530701B1
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EP
European Patent Office
Prior art keywords
heat exchanger
exchanger according
side wall
middle side
region
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.)
Expired - Lifetime
Application number
EP03762629.8A
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German (de)
English (en)
Other versions
EP1530701A1 (fr
Inventor
Gottfried Dipl.-Ing. Dürr
Klaus Dipl.-Ing. FÖRSTER
Franz Ott
Wolfgang Seewald
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Mahle Behr GmbH and Co KG
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Publication of EP1530701A1 publication Critical patent/EP1530701A1/fr
Application granted granted Critical
Publication of EP1530701B1 publication Critical patent/EP1530701B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators

Definitions

  • the invention relates to a device for heat transfer and in particular an evaporator, in particular for a vehicle air conditioning system with at least one collecting box, which has at least two collecting chambers.
  • a device for heat transfer and in particular an evaporator, in particular for a vehicle air conditioning system with at least one collecting box, which has at least two collecting chambers.
  • a heat exchanger which comprises a collecting box made of sheet metal, which is formed from a prepared board.
  • the collecting box is divided longitudinally into two chambers, wherein in the bottom of the collecting tank, the ends of two rows of successively arranged flat tubes are used, which are flowed through by the air to be cooled.
  • the collection chambers have side walls, wherein the adjacent side walls of the two collection chambers are aligned parallel to each other and directly abut each other and there are soldered to each other and to the ground to ensure the tightness of the header tank.
  • a heat exchanger is known in which the connecting flanges are not arranged as usual at the front ends of the collecting tank, but on a longitudinal side portion, whereby a simple structure without additional components can be achieved. Also at one Such heat exchanger, the adjacent side walls of the two chambers are aligned flat parallel to each other and are soldered together and to the bottom of the header tank.
  • a heat exchanger according to the preamble of independent claim 1 is known.
  • a heat exchanger having a collection box and a first collection chamber and a second collection chamber is known in which the side walls of the first collection chamber and the second collection chamber at the bottom of the header contact.
  • a heat exchanger according to the present invention can be used in particular as an evaporator for a vehicle air conditioning system.
  • the heat exchanger comprises at least one collecting tank with at least two collecting chambers, wherein essentially each collecting chamber is essentially delimited by a bottom device and a top device.
  • the topping means of a first collection chamber comprises a first middle side wall
  • the topping means of the second collection chamber comprises a second middle side wall.
  • the first middle sidewall is disposed at least over a portion adjacent to the second middle sidewall.
  • a lateral distance of the first center side wall from the second center side wall increases with the height above the bottom device.
  • the heat exchanger according to the invention has many advantages.
  • the collecting tank has at least two collecting chambers, which are arranged side by side at least over a portion, it is possible to provide a double row evaporator, wherein the passing through the evaporator air only at a first row of flat tubes and then to a second series of flat tubes passes by.
  • Each collection chamber is delimited by the bottom device and by a top device, in which case the term "top device” is to be understood as meaning the boundary of the collection chamber above the bottom device.
  • the topping means may comprise one or two side walls and a top wall or even a continuous curved (e.g., semi-circular shaped) wall or the like.
  • the collecting chambers are arranged side by side and the "middle" side walls, that is, the right side wall of the left collecting chamber and the left side wall of the right collecting chamber, increase their lateral distance from the bottom device, a gap extending from the bottom device is achieved ,
  • ddle side walls are here the adjacent side walls (also “contact side walls”, since they are almost or possibly partially in contact with each other) of the first and second collection chamber meant. Accordingly, the outer side walls in a two-chamber collection box, the side walls outside, so the side walls, next to which no collection chamber is arranged. If a collection box has three collection chambers, both side walls are the Collection chambers in the middle so-called “middle” side walls, as each adjacent a further collection chamber is arranged.
  • a gap which is to be narrowed down on the floor device favors, in particular during the warm-up phase, the transport of flux during soldering to the floor device inwards.
  • conventional, ie parallel, side walls the distance between the parallel walls must be kept very close, as the distance affects the capillary action.
  • the manufacturing tolerances to be complied with are smaller, since the distance of the gap changes continuously over the height and thus even at inaccurate manufacturing tolerances at a suitable distance results in a gap size having a positive capillary action.
  • the cost of the manufacturing process can be reduced, at the same time results in a lower reject rate.
  • the rejection rate can be chosen low, or the rejection rate is slightly higher than a possible minimum, but due to the lower manufacturing tolerances due to the manufacturing costs decrease overall.
  • the gap between the first and second center side walls being substantially V-shaped and extending to a defined height given to the ground a continuous and strictly monotonically increasing distance profile between the first middle side wall and the second middle side wall.
  • a continuous and strictly monotonically increasing distance profile is advantageous since it always results in a suitable lateral spacing, essentially independent of the manufacturing tolerances.
  • At least one stability device or a distribution device is arranged on at least one side wall.
  • a stability device increases the stability.
  • a distribution or a stability device may be provided on a middle or on an outer side wall.
  • distribution or stability devices may be arranged both on one or both middle side walls and / or on one or more outside walls.
  • the distribution or stability means may be provided in the interior of the collection chambers and / or in the space outside or extend inside and outside the collection chambers.
  • a longitudinal direction on at least one distribution or stability device is oriented substantially perpendicular to the bottom device, so that the distribution or stability device preferably extends approximately substantially perpendicular to the surface of the bottom device.
  • At least one distribution or stability device is designed as a recess device and can be shaped, for example, as a channel device or notch or the like.
  • the recess means is a recess in the outer surface of a side wall of a collecting chamber, which extends for example from the bottom device to a certain height above the bottom device.
  • the recessing device can be designed, for example, V-shaped or U-shaped, wherein the width of the U, that is, the width between the legs of the U, can be many times greater than the depth of the U.
  • ratios of pit width to pit height of 1:10 to 100: 1 are possible, with the range of about 1: 5 to 80: 1 being preferred.
  • a ratio in the range of 1: 1 is preferred, whereas in the case of groove-like indentation devices in particular considerably larger values are possible.
  • indentation devices or stability devices made by non-cutting manufacturing processes in general increase the lateral stability of the side walls and thus of the collecting chambers as a whole.
  • Distributors facilitate the distribution of the flux and the solder.
  • Recessing devices on the outer sides of the middle side walls or the contact walls are advantageous, since this ensures that forms between the side walls or legs of the collecting chambers, a capillary gap, which may be formed over a large area depending on the width of the recess means.
  • Such capillary gaps that is to say both narrow and large areas, promote flux transport during soldering, so that a reliable solder connection between the side walls with one another and with the ground device can be achieved.
  • the height of the recesses may be between about 0.05 and 0.4 mm, with the width in the range between 0.05 mm and 8 or 10 mm or even more. It should be noted that these figures refer only to a specific example. In such and also at Other flat tube evaporators or evaporators in general, both smaller and larger dimensions are possible.
  • At least one distribution device or at least one stability device projects outwards, wherein preferably at least one distribution or stability device protrudes outwardly from a side wall of at least one collection chamber.
  • at least one stability device protrudes outward on one of the middle side walls or the contact side walls, so that at the location of a stability device the lateral distance (or gap) between the two middle side walls is reduced.
  • At least one distribution or stability device is designed as a beading device, which is particularly preferably produced without cutting.
  • a plurality of distribution or stability devices is preferably provided distributed equidistantly over at least a portion or the entire length of at least one collection chamber, said stability means alternately on the outwardly facing surfaces of the central side wall of the first collection chamber and the middle side wall of the second collection chamber can be arranged. It is also possible that all stability devices are provided only on a middle side wall or on a collecting chamber.
  • a depth of a distribution or stability device increases with the distance from the bottom device.
  • the depth that is, the vertical distance from the outer dimension of the stability device to the side surface, in the vicinity of the ground device can be one third of the maximum depth.
  • a depression in the bottom device is provided in a contact region of the middle side walls with the bottom device, wherein this recess can be embodied for example as a bottom bead, for example, to represent a guide for the ends of the side walls.
  • At least one flat tube in the region of a flank has a smaller wall thickness than in a region of the rounding or the radius.
  • the wall thickness of the flat tube in the region of the flanks is lower by 10% or 20% or more than in a region of the radius.
  • the ratio of the wall thicknesses in the range of wall thickness in the radius to wall thickness at the flanks in a range of about 1.2 to 3 and particularly preferably in a range between about 1.4 and 2.
  • the wall thickness of the flat tube in the region of the flanks at at least one point about 0.2 to 0.4 and preferably have 0.3 mm.
  • the wall thickness of the flat tube in the radius range then at least one point between 0.4 and 0.7 mm, and preferably about 0.5 to 0.6 mm.
  • At least one upper part device is manufactured in one piece, so that the middle and the outer side wall and the upper ceiling wall of the upper part device are in one piece.
  • At least one upper part device or two upper part devices are manufactured in one piece with the bottom device. Then, it is possible to integrally manufacture with a collecting box comprising two collecting devices from a prefabricated board by, for example, bending the substantially entire collecting box.
  • header box In order to accomplish the subdivision of the header tank into at least two chamber means, it is possible to integrally form the header box such that the side members adjoining the bottom member are curved in the direction of the bottom member and finally connected to each other and to the bottom member.
  • the bottom device may be prepared to have the desired dimensions or openings or recesses for connection to the side and top devices, respectively. Since the Collecting box can be brought into its final form before the final soldering, results in a high strength of the device even before soldering.
  • connection opening of the heat transfer is arranged on a longitudinal side portion of the header tank, wherein it is also possible that a connection opening is arranged on an end face of a header tank or that both connection openings on the front or on one or both longitudinal sides of Are provided collecting tank.
  • the collecting tank is connected to two rows of heat transfer tubes arranged one behind the other. It is also possible that three or even more rows of heat transfer tubes are connected to the collection box.
  • a collection chamber is provided for each row of heat transfer tubes, but it is also possible that for each, for example, two (or three or more) tube rows of heat transfer tubes, a collection chamber is provided.
  • At least one side wall is provided with at least one tab device or the like, which is inserted into recesses of the bottom devices.
  • the insertion point can be caulked.
  • the caulking point can be punched in the guide bead after forming the collector.
  • a caulking of the insertion point before loosening offers the advantage of a firm connection of the parts to be soldered.
  • a cover plate is arranged on at least one, and more preferably on both ends of the collection chambers.
  • a guide bead is provided for the partition, so that the partition wall in essentially can not tilt and results in an improved system of the partition wall on the collector through the U-shaped enclosure.
  • V-shaped gap between the inner side walls of the two collecting chambers and further distribution or stability devices in the form of protruding beads or depressions results in the possibility of a larger tolerance field, so that in a specific example, the gap distance at the open end of V-gap can vary by up to 50% and can move between 0.15 and 0.23 mm, while it is at the bottom of the bottom device between 0.05 and 0.11 mm.
  • the stability devices ensure that there is always a sufficient capillary gap for the flux transport, regardless of production-related form deviations.
  • a first embodiment of the inventive heat exchanger which is designed as an evaporator for a vehicle air conditioning, will now be with reference to the FIGS. 1 to 7 shown.
  • FIG. 1 Heat exchanger shown in perspective comprises an upper collecting box 2, a lower collecting box 11 with heat transfer tubes 9 arranged therebetween.
  • the upper collecting box 2 comprises a first collecting chamber 3 and a second collecting chamber 4 parallel thereto, whose end faces are closed with lids 5.
  • the inlet 6 and the outlet 7 is provided for the cooling medium to be evaporated.
  • inlet and outlet can not only be provided on one longitudinal side 8 of one or both collecting chamber (s) of the collecting tank 3, but that it is also possible for the inlet to be provided on a longitudinal side of the first collecting tank is and the drain on one longitudinal side of the second collection box.
  • inlet and outlet are provided on the end faces of one or both collecting chambers, as in the embodiment according to FIG. 11 is shown, are provided at the inlet and outlet at the end faces of the two collecting chambers of the collecting tank.
  • FIG. 2 shown enlarged detail of the bottom 12 of the collecting tank 2 and an upper part 13 of the first collecting chamber 3 is shown.
  • the upper part 13 of the first collecting chamber 3 is here in the exemplary embodiment made in one piece with the bottom 12 of the collecting tank. Also, the second upper part 23 may be made in one piece with the bottom 12.
  • the upper part 13 of the first collecting chamber 3 comprises an outer side wall 14, an upper wall 16 and a middle side wall 15, which in the exemplary embodiment is arranged approximately in the middle of the collecting box 2 here.
  • the upper part 13 By bending over a lateral edge region of the bottom 12, the upper part 13 is formed with the outer side wall 14, the middle side wall 15 and the upper side wall 16, the transition between the individual wall regions being fluid.
  • the lying in the middle of the bottom 12 "middle" side wall 15 is formed by the end of the one-piece component.
  • the end of the central side wall 15 tabs 18 which protrude beyond the end of the central side wall 15 and are inserted in the production in corresponding recesses 19 in the bottom region of the collecting tank.
  • the tabs 18 are preferably caulked to the bottom 12, so that a tight fit of the upper part 13 and the middle side wall 15 results with the bottom element 12. This ensures a good and permanent soldering of the individual elements together, since during the soldering process, no parts can move against each other. That's also magnified in FIG. 5 shown.
  • overflow openings 21 are provided respectively in the middle side walls 15 and 25, which in the reverse direction, the refrigerant from the first collection chamber 3 to the second collection chamber 4 or, depending on the embodiment, to enable.
  • FIG. 4 is a side view of the sectioned header tank 2 shown in the bottom 12 in the contact area with the central side walls 15 and 25 tabs 18 are inserted into recesses 19 and caulked there to facilitate the soldering.
  • the collection box 2 has a height of 6.9.
  • FIG. 6 is a schematic, not to scale side view of the contact portion of the central side wall 15 and the central side wall 25 with the bottom 12 of the collecting tank 2 shown. While a lateral distance 33 is provided at the point of contact with the floor 12, a lateral distance 32 of the middle side walls is present at a height distance 29 from the floor 12.
  • a distance of 0.1 mm is provided for the distance 33, and at a height 29 of about 10 mm, the distance 32 is about 0.3 mm, so that the opening angle between the central walls 15 and 25 is about 1 ° ,
  • the V-shaped gap 22 allows reliable capillary action during soldering.
  • a kink 10 is provided in the first collection chamber 10 and a kink 20 in the second collection chamber 4, as in the not so schematic drawing according to FIG. 4 to recognize. While the outer side walls 14 and 24 pass without apparent transition point in ceiling walls 16 and 26, in the exemplary embodiment, the middle side walls 15 and 25 at the bend point 10 and 20 clearly offset from the ceiling walls 16 and 26 respectively.
  • FIG. 7 is a further embodiment of a collecting tank 2 is shown, are provided in the same parts with the same reference numerals.
  • This collection box 2 also comprises a first collection chamber 3 and a second collection chamber 4, each of which comprises central side walls 15 and 25, respectively.
  • a bead 31 or a plurality of beads 31 are provided in this embodiment, which are arranged regularly at certain intervals over the length of the collecting tank 2.
  • the individual beads 31 may be provided only on the outside of the middle side wall 25, but it is preferable that they are alternately provided on the outside of the middle wall 15 and the middle wall 25. Due to manufacturing conditions, however, the beads can also be provided only on an outer side of a middle side wall (15 or 25).
  • the outer shape of the bead 31 is also substantially V-shaped, so that it in the region of the bottom 12 a smaller depth, d. H. a smaller distance from the outside of the wall than at the top in the distance 29 at the height of the break point 20.
  • the dimensions of the bead 31 can be adapted to the gap 22 such that the depth in the bottom area about 0.1 mm and in the height 29 above the ground 12 is about 0.3 mm.
  • the height 59 of the bead need not, but may coincide with the height 29 of the break points 10, 20.
  • the dimensions of the bead are smaller by a certain percentage than the dimensions 32 and 33, which define the intended spacing of the side walls 15 and 25. Then the beads guarantee a minimum distance.
  • a recess 30 having a depth 34 of the embodiment 0.1 mm provided in the embodiment according to FIG. 7 in the contact region of the side walls 15 and 25 with the bottom 12, a recess 30 having a depth 34 of the embodiment 0.1 mm provided.
  • the recess 30 facilitates the manufacture of the collecting box 2, since the ends of the side walls 15 and 25 are guided in the recess 30 before soldering and thus results in a lateral holding.
  • the beads 31 arise large capillary gaps, which allow a good distribution of the flux and the solder. Furthermore, the beads 31 perform the function of a spacer between the outsides of the middle side walls 15 and 25. It is reliably ensured that the distance is not too small to ensure a reliable solder joint.
  • grooves 35 executed stability facilities.
  • the grooves 35 have a depth 36, which in the exemplary embodiment 0.1 mm is.
  • Analogous to the embodiment with the beads 31 according to FIG. 7 can also in the embodiment with the groove-like recesses 35 according to FIGS. 8 and 9 the depth of the grooves vary with the distance from the bottom 12 of the header.
  • the surface profiling which is formed by the grooves 35, the or the upper part (s) 13 and 23 of the two collecting chambers 3, 4 stability.
  • the grooves 35 fulfill the function of distributing flow and solder, so that a secure connection of the side walls 15 and 25 with the bottom 12 is made possible.
  • a recess 30 is provided in the contact region of the middle side walls 15 and 25 and the bottom 12.
  • FIG. 9 shows a sectional view AA FIG. 8 .
  • the groove-shaped recesses 35 can be seen from the top.
  • the channel-shaped depressions 35 are arranged on both middle side walls 15 and 25.
  • the grooves are formed in this embodiment by compression of the material in the bending process for molding, so that arise on each of the outer sides of the central side surfaces of the illustrated wells.
  • the depressions on the side wall 15 are laterally displaced relative to the depressions on the side wall 25 by a dimension 62, which preferably corresponds to half of the distance 61.
  • FIG. 10 shows a flat tube 40 for a heat exchanger for one of the embodiments.
  • the flat tube has outer dimensions perpendicular to the flow direction of a refrigerant of a length 41 of 30 mm and a width 42 of 3 mm. But there are other dimensions possible.
  • the wall thickness In the region of the radius or the curves 43, the wall thickness has a dimension 44 of 0.55 mm, while in the region of the flanks 49 a significantly smaller wall thickness 45 of 0.3 mm is present.
  • the flat tube is divided across the width into a number of 8 flow chambers, the middle 6 having an inner width of 3.2 mm.
  • the partitions 46 have a width 47 of 0.3 mm.
  • FIG. 11 illustrates a side view of a heat exchanger 60, which also includes header boxes 2 and 11.
  • the header boxes 2 and 11 are divided into a plurality of longitudinal sections, so that a meandering flow path of the evaporation medium over the heat exchanger 60 results.
  • terminals 6 and 7 are provided for inlet and outlet on the end faces of the collecting tank 2 to the collecting chambers 3 and 4.

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

Claims (23)

  1. Echangeur de chaleur (1), en particulier évaporateur pour un système de climatisation d'un véhicule automobile, comprenant au moins un bac collecteur (2) comportant au moins deux chambres collectrices (3, 4), où pratiquement chaque chambre collectrice (3, 4) est délimitée à chaque fois essentiellement par un dispositif de fond (12) et par un dispositif de partie supérieure (13); où le dispositif de partie supérieure (13) d'une première chambre collectrice (3) comprend une première paroi latérale médiane (15), et le dispositif de partie supérieure (23) d'une deuxième chambre collectrice (4) présente une deuxième paroi latérale médiane (25); où la première paroi latérale médiane (15) est disposée au moins le long d'une partie contiguë à la deuxième paroi latérale médiane (25), où il y a un interstice (22) formé entre la première et la deuxième paroi latérale médiane (15, 25); où, sur au moins une partie d'une hauteur (69) du bac collecteur (2), un espacement latéral de la première paroi latérale médiane (15), par rapport à la deuxième paroi latérale médiane (25), augmente de la hauteur au-dessus du dispositif de fond (12), caractérisé en ce qu'il est prévu, au niveau du point de contact avec un fond (12) du bac collecteur, un espacement latéral (33) formé entre la première paroi latérale médiane (15) et la deuxième paroi latérale médiane (25), et en ce que l'interstice (22) est pratiquement en forme de V, et un profil d'espacement continu et montant de façon strictement constante est formé entre la première paroi latérale médiane (15) et la deuxième paroi latérale médiane (25), jusqu'à une hauteur définie (29) au-dessus du fond (12).
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce qu'au moins un dispositif de stabilité est disposé sur au moins une paroi latérale (14, 15 ; 24, 25), pour augmenter la stabilité.
  3. Echangeur de chaleur selon la revendication 2, caractérisé en ce qu'une direction longitudinale d'au moins un dispositif de stabilité (31, 35) est orientée pratiquement de façon perpendiculaire au dispositif de fond (12).
  4. Echangeur de chaleur selon au moins l'une des revendications 2 ou 3, caractérisé en ce qu'au moins un dispositif de stabilité (35) est configuré comme un dispositif en creux (35).
  5. Echangeur de chaleur selon au moins l'une quelconque des revendications 2 à 4, caractérisé en ce qu'au moins un dispositif de stabilité (35) est formé essentiellement comme un dispositif à rainure (35).
  6. Echangeur de chaleur selon au moins l'une quelconque des revendications 2 à 5, caractérisé en ce qu'au moins un dispositif de stabilité (35) est formé essentiellement comme une encoche (35).
  7. Echangeur de chaleur selon au moins l'une quelconque des revendications 2 à 6, caractérisé en ce qu'au moins un dispositif de stabilité (31) fait saillie vers l'extérieur.
  8. Echangeur de chaleur selon la revendication 7, caractérisé en ce qu'au moins un dispositif de stabilité (31, 35) est configuré comme (31) un dispositif à moulure.
  9. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu au moins une paroi de séparation qui présente une moulure de guidage.
  10. Echangeur de chaleur selon au moins l'une quelconque des revendications 2 à 8, caractérisé en ce qu'une profondeur (36) d'au moins un dispositif de stabilité (31, 35) augmente d'un espacement (29) par rapport au dispositif de fond (21).
  11. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'une cavité de fond (30) est disposée dans une zone de contact des parois latérales médianes (15, 25), avec le dispositif de fond (12).
  12. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé par au moins un tube plat (40) qui présente, dans la zone d'un flanc (49), une épaisseur de paroi (42, 45) plus faible que celle dans une zone d'un rayon (43).
  13. Echangeur de chaleur selon la revendication 12, caractérisé en ce qu'au moins un tube plat (40) présente, dans la zone des flancs (49), une épaisseur de paroi (45) au moins de 20 % plus faible que celle dans une zone du rayon.
  14. Echangeur de chaleur selon au moins l'une des revendications 12 et 13, caractérisé en ce qu'au moins un tube plat (40) présente, dans la zone des flancs (49), sur au moins un point, une épaisseur de paroi de 0,3 mm environ.
  15. Echangeur de chaleur selon au moins l'une des revendications 12 à 13, caractérisé en ce qu'au moins un tube plat (40) présente, dans la zone d'un rayon (43), sur au moins un point, une épaisseur de paroi (44) de 0,5 mm environ.
  16. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un dispositif de partie supérieure (13, 23) est fabriqué en étant monobloc.
  17. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un dispositif de partie supérieure (13, 23) est fabriqué en formant une seule et même pièce avec le dispositif de fond (12).
  18. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une ouverture de raccordement (6, 7) est disposée sur une partie (8) du côté longitudinal du bac collecteur (2).
  19. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le bac collecteur (2) est formé par un assemblage de deux rangées de tubes de transmission de chaleur (9) disposés les uns derrière les autres.
  20. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de fond (12) et / ou le dispositif de partie supérieure (13, 23) est formé par un larget préparé.
  21. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une paroi latérale (14, 15 ; 24, 25) est dotée d'au moins une patte (19) qui est enfoncée dans un évidement (21) du dispositif de fond.
  22. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'un couvercle de fermeture (5) est disposé sur au moins une extrémité frontale (38) d'au moins une chambre collectrice (3, 4).
  23. Echangeur de chaleur selon au moins l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une ouverture de raccordement (6, 7) est disposée sur une extrémité frontale (38) d'au moins une chambre collectrice (3, 4) du bac collecteur (2).
EP03762629.8A 2002-07-05 2003-07-04 Echangeur de chaleur, en particulier evaporateur pour installation de climatisation d'un vehicule Expired - Lifetime EP1530701B1 (fr)

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DE10230394 2002-07-05
DE10230394 2002-07-05
PCT/EP2003/007195 WO2004005827A1 (fr) 2002-07-05 2003-07-04 Échangeur de chaleur, en particulier évaporateur pour un système de climatisation de véhicule à moteur

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US (1) US7273093B2 (fr)
EP (1) EP1530701B1 (fr)
JP (1) JP2005532525A (fr)
CN (1) CN100510598C (fr)
AU (1) AU2003250891A1 (fr)
BR (1) BR0305422B1 (fr)
DE (1) DE10330268A1 (fr)
WO (1) WO2004005827A1 (fr)

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Publication number Publication date
CN1666076A (zh) 2005-09-07
EP1530701A1 (fr) 2005-05-18
AU2003250891A1 (en) 2004-01-23
JP2005532525A (ja) 2005-10-27
BR0305422A (pt) 2004-07-27
US7273093B2 (en) 2007-09-25
WO2004005827A1 (fr) 2004-01-15
DE10330268A1 (de) 2004-01-15
CN100510598C (zh) 2009-07-08
US20060037740A1 (en) 2006-02-23
BR0305422B1 (pt) 2013-12-24

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