EP1530701A1 - 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

Info

Publication number
EP1530701A1
EP1530701A1 EP03762629A EP03762629A EP1530701A1 EP 1530701 A1 EP1530701 A1 EP 1530701A1 EP 03762629 A EP03762629 A EP 03762629A EP 03762629 A EP03762629 A EP 03762629A EP 1530701 A1 EP1530701 A1 EP 1530701A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger according
side wall
stability
collecting
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.)
Granted
Application number
EP03762629A
Other languages
German (de)
English (en)
Other versions
EP1530701B1 (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
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1530701A1 publication Critical patent/EP1530701A1/fr
Application granted granted Critical
Publication of EP1530701B1 publication Critical patent/EP1530701B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

  • Heat exchangers especially evaporators for one
  • the invention relates to a device for heat transfer and, in particular, to an evaporator, in particular for a vehicle air-conditioning system, with at least one header tank which has at least two header chambers.
  • a heat exchanger which has a collecting box made of sheet metal, which is formed from a prepared circuit board.
  • the collecting box is divided into two chambers in the longitudinal direction, the ends of two rows of flat tubes arranged one behind the other, through which the air to be cooled flows, are inserted into the bottom of the collecting box.
  • the collecting chambers have side walls, the adjacent side walls of the two collecting chambers being aligned parallel to one another and lying directly against one another and being soldered there to one another and to the floor in order to ensure the tightness of the collecting box.
  • a disadvantage of the heat exchangers known in the prior art is that relatively narrow manufacturing tolerances have to be observed in order to keep the rejects low.
  • 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 box with at least two collecting chambers, essentially each collecting chamber being essentially delimited by a bottom device and an upper part device.
  • the upper part device of a first collecting chamber comprises a first middle side wall
  • the upper part device of the second collecting chamber comprises a second middle side wall.
  • the first middle side wall is arranged at least over a section adjacent to the second middle side wall.
  • a lateral distance between the first middle side wall and the second middle side wall increases with the height above the floor device.
  • the collecting box has at least two collecting chambers, which are arranged next to one another over at least one section, makes it possible to provide a double-row evaporator, the air passing through the evaporator first on a first row of flat tubes and then on a second row of flat tubes passes by.
  • Each collecting chamber is delimited by the bottom device and by an upper part device, the term “upper part device” here being used to mean the delimitation of the collecting chamber above the bottom device.
  • the upper part device can comprise one or two side walls and a top wall or also a continuously curved (e.g. semicircular) wall or the like.
  • the collecting chambers are arranged next to one another and the "middle" side walls, that is to say the right side wall of the left collecting chambers and the left side wall of the right collecting chamber, increase their lateral distance from the floor device, a gap which increases from the floor device is achieved ,
  • “Middle” side walls here mean the side walls lying next to one another (also “contact side walls” since these are almost or possibly partially in contact with one another) of the first and second collecting chambers. Accordingly, the outer side walls in a two-chamber collection box are the side walls outside, that is to say 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, since another collection chamber is arranged adjacent to each.
  • a gap to be narrowed towards the base device favors the flux transport towards the inside when soldering to the base device, especially in the warm-up phase.
  • conventional, that is to say parallel, side walls the distance between the parallel walls must be observed very precisely, since the distance influences 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 with less precise manufacturing tolerances at a suitable distance, there is a gap size which has a positive capillary effect.
  • the more favorable manufacturing tolerances can lower the costs for the manufacturing process, which also results in a lower reject rate.
  • the reject rate can be selected to be low, or the reject rate is somewhat higher than a possible minimum, although the manufacturing costs decrease overall due to the more favorable manufacturing tolerances.
  • the lateral distance between the first and the second middle side wall or the contact side walls is essentially V-shaped.
  • a continuous and strictly monotonously increasing distance curve is advantageous, since this always results in a suitable lateral distance, regardless 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 stability.
  • a distribution or a stability device can be provided on a central or also on an outer side wall.
  • one or more distribution or stability devices can be arranged both on one or both middle side walls and / or on one or more outer side walls.
  • the distribution or stability devices can be provided in the interior of the collecting chambers and / or in the space outside or extend inside and outside the collecting chambers.
  • a longitudinal direction on at least one distribution or stability device is preferably oriented essentially perpendicular to the floor device, so that the distribution or stability device preferably extends approximately perpendicular to the surface of the floor device.
  • At least one distribution or stability device is as
  • Recess device and can be shaped, for example, as a channel device or notch or the like.
  • the depression device can be a depression in the outer surface of a side wall of a collecting chamber, which extends, for example, from the floor device to a certain height above the floor device.
  • the deepening device can, for example, be V-shaped or U-shaped, the width of the U, ie the width between the legs of the U, being many times greater than the depth of the U.
  • ratios of well width to well height of 1:10 to 100: 1 are possible, the range being preferably from about 1: 5 to 80: 1.
  • a ratio in the range of 1: 1 is preferred, while in particular in the case of groove-like recesses, considerably larger values are also possible.
  • Manufacturing methods manufactured deepening devices or stability devices in general increase the stability in the lateral direction of the side walls and thus the collecting chambers as a whole.
  • Distributors facilitate the distribution of the flux and solder.
  • Recessing devices on the outer sides of the central side walls or the contact walls are advantageous, since this ensures that a capillary gap is formed between the side walls or legs of the collecting chambers, which can also be formed over a large area, depending on the width of the depression device.
  • Capillary gaps of this type that is to say both narrow and large areas, promote the flux transport when soldering, so that a reliable solder connection between the side walls and the base device can be achieved.
  • the height of the depressions can be between approximately 0.05 and 0.4 mm, the width in the range between 0.05 mm and 8 or 10 mm or even more. It should be pointed out here that these figures refer only to one specific example. With such and also with 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, preferably at least one distribution or stability device projecting outwards from a side wall of at least one collection chamber. At least one is particularly preferred
  • Stability device on one of the middle side walls or the contact side walls to the outside, so that the lateral distance (or gap) between the two middle side walls is reduced in the place of a stability device.
  • At least one distribution or stability device is preferably designed as a bead device, which is particularly preferably manufactured without cutting.
  • a plurality of distribution or stability devices is preferably distributed equidistantly over at least a portion or also over the entire length of at least one collection chamber, the stability devices alternating on the outwardly facing surfaces of the middle 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 only provided on a central side wall or on a collecting chamber.
  • a depth of a distribution or stability device increases with the distance from the floor device.
  • the depth that is to say the vertical distance from the outer dimension of the stability device to the side surface, in the vicinity of the floor device can be one third of the maximum depth. It is then in the case of outwardly protruding stability devices the height opposite the side wall, while at
  • Depression devices as stability devices means the depth of the depression device relative to the side wall.
  • a depression is provided in the bottom device in a contact area of the middle side walls with the bottom device, this depression being able to be designed, for example, as a bottom bead, for example to represent a guide for the ends of the side walls.
  • At least one flat tube has a smaller wall thickness in the region of a flank than in a region of the curve or radius.
  • the wall thickness of the flat tube is preferably 10% or 20% or more less in the region of the flanks than in a region of the radius.
  • the ratio of the wall thicknesses in the range from wall thickness in the radius to wall thickness on the flank is preferably in a range from approximately 1.2 to 3 and particularly preferably in a range between approximately 1.4 and 2.
  • the wall thickness of the flat tube in the region of the flanks can be approximately 0.2 to 0.4 and preferably 0.3 mm at least at one point.
  • the wall thickness of the flat tube is in the radius area 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 made in one piece, so that the middle and the outer side wall and the upper ceiling wall of the upper part device are made in one piece.
  • At least one top part device or two top part devices are made in one piece with the bottom device. It is then possible to use a collecting box, which comprises two collecting devices, to manufacture the essentially entire collecting box in one piece from a prefabricated circuit board, for example by bending.
  • the collecting box In order to accomplish the subdivision of the collecting box into at least two chamber devices, it is possible to design the collecting box in one piece in such a way that the side elements adjoining the bottom element are curved in the direction of the bottom element, and are finally connected to one another and to the bottom element.
  • the bottom device can be prepared in such a way that it has the desired dimensions or also the required openings or recesses for the connection to the side or top part devices. Since the The box can be brought into its final shape before the final soldering, the device also has a high strength before the soldering.
  • connection opening of the heat transfer is arranged on a longitudinal side section of the collecting tank, it also being possible for a connection opening to be arranged on a front side of a collecting tank or for both connection openings to be arranged on the front side or on one or both long sides of the Collection box are provided.
  • the collecting tank is connected to two rows of heat transfer tubes arranged one behind the other. It is also possible that three or more rows of heat transfer pipes are connected to the header box.
  • a collection chamber is preferably provided for each row of heat transfer tubes, but it is also possible for a collection chamber to be provided for, for example, two (or three or more) rows of tubes of heat transfer tubes.
  • At least one side wall is provided with at least one tab device or the like, which is inserted into recesses in the bottom devices.
  • the insertion point can be caulked.
  • the caulking point can also be punched in the guide bead after the collector has been formed. Caulking the insertion point before loosening offers the advantage of a firm connection of the parts to be soldered.
  • a cover plate is preferably arranged on at least one and particularly preferably on both ends of the collecting chambers.
  • a guide bead is provided for the partition, so that the partition in the essentially cannot tilt and there is an improved installation of the partition on the collector due to the U-shaped border.
  • a U-shaped border or bead in the area of the contact surfaces of the side walls or legs also results in larger soldering areas.
  • 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 the V gap can vary by up to 50% and can move between 0.15 and 0.23 mm, while at the lower end of the bottom device it lies between 0.05 and 0.11 mm.
  • the stability devices ensure that there is always a sufficient capillary gap for flux transport, regardless of manufacturing-related shape deviations.
  • Figure 1 is a perspective view of a heat exchanger according to the invention according to a first preferred embodiment
  • FIG. 2 shows a partial view of the collecting box from the exemplary embodiment according to FIG. 1;
  • Figure 3 is a partial view of an upper part of the header box of Figure 2;
  • Figure 4 shows the collecting box of Figure 1 in section
  • FIG. 5 shows the detail A from Figure 2
  • Figure 6 is a schematic side view of part of the header of the heat exchanger of Figure 1;
  • FIG. 7 shows a schematic illustration of a second exemplary embodiment of a collecting box
  • Figure 8 is a schematic side view of a third embodiment of a header of a heat exchanger
  • FIG. 9 shows part of a sectioned top view A-A of the collecting box according to FIG. 8;
  • Figure 10 shows a flat tube according to the invention in section
  • Figure 11 shows another embodiment of a heat exchanger according to the invention in side view.
  • a first embodiment of the heat exchanger according to the invention which as an evaporator for a
  • the heat exchanger shown in perspective in FIG. 1 comprises an upper header box 2, a lower header 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, the end faces of which are closed with lids 5.
  • the inlet and outlet can not only be provided on one long side 8 of one or both collecting chamber (s) of the collecting box 3, but that it is also possible for the inlet to be provided on a long side of the first collecting box and the drain on one long side of the second collecting tank.
  • the inlet and outlet may be provided on the end faces of one or both collection chambers, as is illustrated in the exemplary embodiment according to FIG. 11, with the inlet and outlet being provided on the end faces of the two collection chambers of the collection box.
  • the upper part 13 of the first collecting chamber 3 is made in one piece with the bottom 12 of the collecting box.
  • the second upper part 23 can also be made in one piece with the base 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.
  • the upper part 13 with the outer side wall 14, the middle side wall 15 and the upper side wall 16 is formed by bending over a lateral edge area of the base 12, the transition between the individual wall areas being fluid.
  • the "middle" side wall 15 lying in the middle of the base 12 is formed by the end of the one-piece component.
  • the end of the middle side wall 15 has tabs 18 which protrude beyond the end of the middle side wall 15 and are inserted into corresponding recesses 19 in the bottom region of the collecting box during manufacture.
  • the tabs 18 are preferably caulked to the floor 12, so that the upper part 13 and the central side wall 15 are firmly seated to the floor element 12. This ensures a good and durable brazing of the individual elements to one another, as can move during the soldering process, no parts against each other '. This is also shown enlarged in FIG. 5.
  • pipe receptacles 17 are provided for the flat pipes 9 to be connected.
  • overflow openings 21 are provided in the middle side walls 15 and 25, which overflow the refrigerant from the first collecting chamber 3 to the second collecting chamber 4 or, depending on the embodiment, in the opposite direction, to enable.
  • FIG. 4 shows a side view of the sectioned collecting box 2, in which tabs 18 are inserted into recesses 19 in the base 12 in the contact area with the central side walls 15 and 25 and caulked there in order to facilitate soldering.
  • the collecting box 2 has a height 69.
  • FIG. 6 shows a schematic side view, not to scale, of the contact area of the middle side wall 15 and the middle side wall 25 with the bottom 12 of the collecting tank 2. While a lateral distance 33 is provided at the point of contact with the floor 12, there is a lateral distance 32 of the central side walls at a height distance 29 from the floor 12. In the exemplary embodiment, a distance of 0.1 mm is provided for the distance 33, and at a height 29 of approximately 10 mm, the distance 32 is approximately 0.3 mm, so that the opening angle between the middle walls 15 and 25 is approximately 1 ° , The V-shaped gap 22 enables reliable capillary action when soldering.
  • a kink 10 in the first collecting chamber 10 and a kink 20 in the second collecting chamber 4 are clearly offset from the ceiling walls 16 and 26 at the kink 10 and '20, respectively.
  • Collection box 2 shown, in which the same parts are provided with the same reference numerals. This collection box too
  • Collection chambers 4 each comprising middle side walls 15 and 25, respectively.
  • a bead 31 or a plurality of beads 31 are provided in the V-shaped gap 22, which are arranged at regular intervals along the length of the collecting tank 2.
  • the individual beads 31 can, for example, only be provided on the outside of the middle side wall 25, but it is preferred that they are provided alternately on the outside of the middle wall 15 and the middle wall 25. Due to technical production conditions, the beads can, however, only be provided on an outer side of a central side wall (15 or 25).
  • the outer shape of the bead 31 is also essentially V-shaped, so that it has a smaller depth in the region of the bottom 12, ie a smaller distance from the outside of the wall than in the upper region at a distance 29 at the height of the break point 20
  • the dimensions of the bead 31 can be adjusted at the gap 22 such that the depth in the base region is approximately 0.1 mm and in the height 29 above the base 12 is approximately 0.3 mm.
  • the height 59 of the bead does not have to, but can match the height 29 of the break points 10, 20.
  • the dimensions of the bead are also possible, so that these figures are only to be understood as examples.
  • the dimensions of the bead it is possible for the dimensions of the bead to be a certain percentage smaller than the dimensions 32 and 33, respectively, which define the intended spacing of the side walls 15 and 25. Then the beads guarantee a minimum distance.
  • a depression 30 with a depth 34 of the exemplary embodiment 0.1 mm is provided in the contact area of the side walls 15 and 25 with the bottom 12.
  • the depression 30 facilitates the manufacture of the collecting tank 2, since the ends of the side walls 15 and 25 are guided into the depression 30 before soldering, and this results in a lateral hold.
  • the beads 31 create large capillary gaps which allow the flux and the solder to be distributed well. Furthermore, the beads 31 fulfill the function of a spacer between the outer sides of the middle side walls 15 and 25. It is reliably ensured that the distance is not too small to ensure a reliable soldered connection.
  • stability devices designed as channels 35 are provided.
  • the grooves 35 have a depth 36, which is 0.1 mm in the exemplary embodiment is.
  • the depth of the channels can also change in the exemplary embodiment with the groove-like depressions 35 according to FIGS. 8 and 9 with the distance from the bottom 12 of the collecting tank.
  • the grooves 35 fulfill the function of distributing flux and solder, so that a secure connection of the side walls 15 and 25 to the floor 12 is made possible.
  • a depression 30 is provided in the contact area of the middle side walls 15 and 25 and the bottom 12.
  • FIG. 9 shows a sectional top view A-A from FIG. 8.
  • the groove-shaped depressions 35 can be seen in FIG. 9 from the top view.
  • the groove-shaped depressions 35 are arranged on both middle side walls 15 and 25.
  • the channels were created by compressing the material during the bending process for producing the mold, so that the depressions shown result on each of the outer sides of the central side surfaces.
  • a plurality of depressions are provided, which here are also at the same distance 61 from one another in the middle side walls.
  • the depressions on the side wall 15 are laterally displaced relative to the depressions on the side wall 25 by an amount 62, which preferably corresponds to half the distance 61.
  • the distance 33 in the region of contact of the side walls with the floor, the distance between the two side walls from each other is approximately one third of the distance at the height 29 of the break points 10 and 20.
  • FIG. 10 shows a flat tube 40 for a heat exchanger for one of the exemplary embodiments.
  • the flat tube has outer dimensions perpendicular to the direction of flow of a refrigerant with a length 41 of 30 mm and a width 42 of 3 mm. However, other dimensions are also possible. In the area of the radius or the curves 43, the wall thickness has a dimension 44 of 0.55 mm, while in the area of the flanks 49 there is a significantly smaller wall thickness 45 of 0.3 mm.
  • 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 shows a side view of a heat exchanger 60, which likewise comprises header boxes 2 and 11.
  • the Sa melhimsten 2 and 11 are divided into several longitudinal sections, so that there is a meandering flow path of the evaporation medium above the heat exchanger 60.
  • the connections 6 and 7 are provided for inlet and outlet on the end faces of the collecting tank 2 on 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)

Abstract

Échangeur de chaleur, en particulier évaporateur pour un système de climatisation de véhicule à moteur, qui comporte au moins un caisson collecteur (2, 11) possédant deux chambres collectrices (3, 4) essentiellement délimitées par un élément de fond (12) et un élément supérieur (13). L'élément supérieur (13) possède une paroi latérale médiane (15) placée adjacente, sur au moins un segment, à une autre paroi latérale médiane. L'écart entre les deux parois latérales médianes (15, 25) augmente avec la hauteur par rapport à l'élément de fond (12).
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)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
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

Publications (2)

Publication Number Publication Date
EP1530701A1 true EP1530701A1 (fr) 2005-05-18
EP1530701B1 EP1530701B1 (fr) 2016-04-13

Family

ID=29723731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03762629.8A Expired - Lifetime EP1530701B1 (fr) 2002-07-05 2003-07-04 Echangeur de chaleur, en particulier evaporateur pour installation de climatisation d'un vehicule

Country Status (8)

Country Link
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)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20303139U1 (de) * 2003-02-27 2003-06-18 Behr Gmbh & Co Kg Vorrichtung zur Wärmeübertragung
US7343966B2 (en) * 2005-06-17 2008-03-18 Newfield Technology Corporation Stamped manifold for a heat exchanger and method for making same
DE102006028017A1 (de) 2006-02-10 2007-08-16 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere mit Kältespeicher
JP5264507B2 (ja) * 2006-02-10 2013-08-14 ベール ゲーエムベーハー ウント コー カーゲー 蓄冷器を有する熱交換器
JP2008020098A (ja) * 2006-07-11 2008-01-31 Showa Denko Kk 熱交換器
US7779893B2 (en) * 2006-08-22 2010-08-24 Delphi Technologies, Inc. Combination heat exchanger having an improved end tank assembly
KR100831876B1 (ko) * 2006-08-22 2008-05-22 모딘코리아 유한회사 헤더탱크 및 이를 포함하는 열교환기
KR20080027066A (ko) * 2006-09-22 2008-03-26 한라공조주식회사 라디에이터
US20100270012A1 (en) * 2006-09-25 2010-10-28 Korea Delphi Automotive Systems Corporation Automotive heat exchanger to the unification of header and tank and fabricating method thereof
KR101344520B1 (ko) * 2007-01-12 2013-12-24 한라비스테온공조 주식회사 열교환기
US20100200195A1 (en) * 2007-04-12 2010-08-12 Automotivethermotech Gmbh High-performance heat exchanger for automotive vehicles, and heating/air-conditioning device including a high-performance heat exchanger
US8353330B2 (en) * 2007-11-02 2013-01-15 Halla Climate Control Corp. Heat exchanger
EP2098313A1 (fr) 2008-03-06 2009-09-09 Delphi Technologies, Inc. Collecteur d'échangeur thermique et son procédé de fabrication
EP2107328B1 (fr) * 2008-04-02 2012-07-11 Behr GmbH & Co. KG Evaporateur
US20110056667A1 (en) * 2008-07-15 2011-03-10 Taras Michael F Integrated multi-circuit microchannel heat exchanger
KR20100023600A (ko) * 2008-08-22 2010-03-04 현대자동차주식회사 자동차의 라디에이터
CN101936670B (zh) * 2009-06-30 2013-05-15 王磊 一种微通道、平行流、全铝扁管焊接式结构换热器及应用
CN101995116B (zh) * 2009-08-20 2014-07-30 贝洱两合公司 蒸发器
JP5737837B2 (ja) * 2009-10-16 2015-06-17 三菱重工業株式会社 熱交換器およびこれを備えた車両用空気調和装置
US20120222848A1 (en) * 2011-03-01 2012-09-06 Visteon Global Technologies, Inc. Integrated counter cross flow condenser
US9671181B2 (en) * 2011-09-30 2017-06-06 L&M Radiator, Inc. Heat exchanger with improved tank and tube construction
WO2013160956A1 (fr) * 2012-04-26 2013-10-31 三菱電機株式会社 Collecteur d'échangeur de chaleur et échangeur de chaleur le comportant
CN103277942B (zh) * 2013-05-14 2015-06-03 广东美的制冷设备有限公司 平行流换热器及空调器
WO2014204038A1 (fr) * 2013-06-18 2014-12-24 주식회사 고산 Têtes multiples pour échangeur de chaleur
JP6434786B2 (ja) * 2014-11-26 2018-12-05 サンデンホールディングス株式会社 熱交換器
CN106052459B (zh) * 2015-09-01 2018-06-22 赵炜 一种强化传热的圆弧形散热管
DE102017201081A1 (de) * 2016-01-25 2017-07-27 Hanon Systems Rohr für einen Wärmetauscher
US10267576B2 (en) * 2016-01-28 2019-04-23 L & M Radiator, Inc. Heat exchanger with tanks, tubes and retainer
JP6711317B2 (ja) * 2017-06-13 2020-06-17 株式会社デンソー 熱交換器
US11047625B2 (en) 2018-05-30 2021-06-29 Johnson Controls Technology Company Interlaced heat exchanger
EP3587990B1 (fr) * 2018-06-22 2021-01-27 Valeo Vyminiky Tepla, s.r.o. Boîte collectrice pour échangeur de chaleur à découplage thermique
CN110645821A (zh) * 2018-06-26 2020-01-03 三花控股集团有限公司 集管箱及换热器
DE102018222815A1 (de) * 2018-12-21 2020-06-25 Mahle International Gmbh Aufnahmekasten für eine Wärmeübertrager
DE102021208038A1 (de) 2021-07-26 2023-01-26 Mahle International Gmbh Verdampfer

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636762C1 (de) * 1986-10-29 1988-03-03 Mtu Muenchen Gmbh Waermetauscher
US5190101A (en) * 1991-12-16 1993-03-02 Ford Motor Company Heat exchanger manifold
FR2720490B1 (fr) * 1994-05-26 1996-07-12 Valeo Thermique Moteur Sa Plaque collectrice renforcée pour échangeur de chaleur.
JPH09196594A (ja) 1995-11-14 1997-07-31 Mitsubishi Heavy Ind Ltd 熱交換器
EP0840083A3 (fr) * 1996-10-30 1998-10-14 Ford Motor Company Cloison pour échangeur de chaleur
US5761808A (en) * 1996-10-30 1998-06-09 Ford Motor Company Method of making a heat exchanger
US5904206A (en) * 1998-02-25 1999-05-18 General Motors Corporation Heat exchanger flow tube with improved header to tube end stress resistance
JP3670135B2 (ja) * 1998-05-06 2005-07-13 俊臣 林 枝管を一体に備えた管状体の製造方法
DE19826881B4 (de) 1998-06-17 2008-01-03 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Verdampfer
US6216777B1 (en) 2000-01-27 2001-04-17 Visteon Global Technologies, Inc. Manifold for a heat exchanger and method of making same
US6315036B1 (en) * 2000-06-14 2001-11-13 Honeywell International Inc. Manifold reinforcement webbing for heat exchangers
DE10056074B4 (de) * 2000-11-07 2017-03-23 Mahle International Gmbh Wärmeübertrager
WO2002079708A2 (fr) * 2001-03-29 2002-10-10 Showa Denko K.K. Collecteur pour echangeurs thermiques, echangeur thermique et son procede de fabrication
DE10132485B4 (de) * 2001-07-05 2018-06-28 Mahle International Gmbh Sammelkasten für einen Wärmetauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004005827A1 *

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CN1666076A (zh) 2005-09-07
US7273093B2 (en) 2007-09-25
CN100510598C (zh) 2009-07-08
DE10330268A1 (de) 2004-01-15
BR0305422B1 (pt) 2013-12-24
JP2005532525A (ja) 2005-10-27
WO2004005827A1 (fr) 2004-01-15
AU2003250891A1 (en) 2004-01-23
EP1530701B1 (fr) 2016-04-13
US20060037740A1 (en) 2006-02-23
BR0305422A (pt) 2004-07-27

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