EP1530701B1 - Heat exchanger in particular an evaporator for a vehicle air-conditioning unit - Google Patents
Heat exchanger in particular an evaporator for a vehicle air-conditioning unit Download PDFInfo
- 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
- Authority
- 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
Links
- 238000004378 air conditioning Methods 0.000 title claims description 7
- 238000005192 partition Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims 8
- 238000004519 manufacturing process Methods 0.000 description 20
- 239000011324 bead Substances 0.000 description 17
- 238000009826 distribution Methods 0.000 description 15
- 238000005476 soldering Methods 0.000 description 9
- 238000012546 transfer Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 7
- 229910000679 solder Inorganic materials 0.000 description 7
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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)
Description
Die Erfindung betrifft eine Vorrichtung zur Wärmeübertragung und insbesondere einen Verdampfer insbesondere für eine Fahrzeugklimaanlage mit wenigstens einem Sammelkasten, der wenigstens zwei Sammelkammern aufweist. Obwohl die Erfindung im folgenden mit Bezug auf den Verdampfer einer Fahrzeugklimaanlage beschrieben wird, sei darauf hingewiesen, dass dieser Einsatzzweck nicht beschränkend zu verstehen ist, sondern dass der erfindungsgemäße Wärmeübertrager ebenso in anderen Klimaanlagen und dergleichen mehr eingesetzt werden kann.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. Although the invention will be described below with reference to the evaporator of a vehicle air conditioning, it should be noted that this purpose is not limiting, but that the heat exchanger according to the invention can also be used in other air conditioning systems and the like.
Derartige, oben genannte, Vorrichtungen zur Wärmeübertragung sind aus dem Stand der Technik bekannt. Aus der
Aus der
Aus der
Nachteilig bei den im Stand der Technik bekannten Wärmeübertragern ist, dass relativ enge Fertigungstoleranzen eingehalten werden müssen, um den Ausschuss gering zu halten.A disadvantage of the known in the art heat exchangers is that relatively tight manufacturing tolerances must be met in order to keep the waste low.
Es ist deshalb die Aufgabe der vorliegenden Erfindung, einen Wärmeübertrager zur Verfügung zu stellen, bei dem größere Fertigungstoleranzen möglich sind.It is therefore the object of the present invention to provide a heat exchanger available, in which larger manufacturing tolerances are possible.
Die Aufgabe der vorliegenden Erfindung wird durch den Anspruch 1 gelöst.The object of the present invention is achieved by
Bevorzugte Weiterbildungen sind Gegenstand der Unteransprüche.Preferred developments are subject of the dependent claims.
Ein Wärmeübertrager gemäß der vorliegenden Erfindung kann insbesondere als Verdampfer für eine Fahrzeugklimaanlage eingesetzt werden. Der Wärmeübertrager umfasst wenigstens einen Sammelkasten mit wenigstens zwei Sammelkammern, wobei im wesentlichen jede Sammelkammer jeweils im wesentlichen durch eine Bodeneinrichtung und eine Oberteileinrichtung begrenzt wird. Die Oberteileinrichtung einer ersten Sammelkammer umfasst eine erste mittlere Seitenwand, und die Oberteileinrichtung der zweiten Sammelkammer umfasst eine zweite mittlere Seitenwand.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, and the topping means of the second collection chamber comprises a second middle side wall.
Die erste mittlere Seitenwand ist wenigstens über einen Abschnitt benachbart zu der zweiten mittleren Seitenwand angeordnet.The first middle sidewall is disposed at least over a portion adjacent to the second middle sidewall.
Wenigstens über einen Teil einer Höhe des Sammelkastens nimmt ein seitlicher Abstand der ersten mittleren Seitenwand von der zweiten mittleren Seitenwand mit der Höhe über der Bodeneinrichtung zu.At least over part of a height of the header box, a lateral distance of the first center side wall from the second center side wall increases with the height above the bottom device.
Der erfindungsgemäße Wärmeübertrager hat viele Vorteile.The heat exchanger according to the invention has many advantages.
Dadurch, dass der Sammelkasten wenigstens zwei Sammelkammern aufweist, die wenigstens über einen Abschnitt nebeneinander angeordnet sind, wird es ermöglicht, einen zweireihigen Verdampfer vorzusehen, wobei die durch den Verdampfer tretende Luft erst an einer ersten Reihe von Flachrohren und anschließend an einer zweiten Reihe von Flachrohren vorbeitritt.Characterized in that 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.
Jede Sammelkammer wird durch die Bodeneinrichtung und durch eine Oberteileinrichtung begrenzt, wobei hier unter dem Begriff "Oberteileinrichtung" die Begrenzung der Sammelkammer oberhalb der Bodeneinrichtung zu verstehen ist. Die Oberteileinrichtung kann eine oder zwei Seitenwände und eine Deckenwand oder auch eine durchgehend gekrümmte (z.B. halbkreisförmig gestaltete) Wand öder dergleichen umfassen.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.
Dadurch, dass die Sammelkammern nebeneinander angeordnet sind und die "mittleren" Seitenwände, das heißt die rechte Seitenwand der linken Sammelkammer und die linke Seitenwand der rechten Sammelkammer, ihren seitlichen Abstand von der Bodeneinrichtung aus vergrößern, wird ein sich von der Bodeneinrichtung aus vergrößernder Spalt erzielt.Characterized in that 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 ,
Dadurch wird ein besserer Flussmitteltransport und in der Folge eine bessere Aktivierung des Lotes in dem Spalt und somit an den mittleren Seitenwänden und der Bodeneinrichtung erzielt, wenn der Sammelkasten verlötet wird.Thereby, a better flux transport and consequently a better activation of the solder in the gap and thus at the middle side walls and the bottom device is achieved when the collecting box is soldered.
Mit "mittleren" Seitenwände sind hier die nebeneinander liegenden Seitenwände (auch "Kontaktseitenwände", da diese nahezu bzw. eventuell teilweise in Kontakt miteinander stehen) der ersten und zweiten Sammelkammer gemeint. Demzufolge sind die äußeren Seitenwände bei einem Zweikammer-Sammelkasten die Seitenwände außen, also die Seitenwände, neben denen keine Sammelkammer angeordnet ist. Wenn ein Sammelkasten drei Sammelkammern aufweist, sind beide Seitenwände der Sammelkammern in der Mitte sogenannte "mittlere" Seitenwände, da jeweils benachbart eine weitere Sammelkammer angeordnet ist.By "middle" 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.
Ein sich auf die Bodeneinrichtung zu verschmälernder Spalt begünstigt insbesondere in der Aufwärmphase den Flussmitteltransport beim Verlöten zur Bodeneinrichtung nach innen hin. Bei konventionellen, das heißt parallelen, Seitenwänden muss der Abstand zwischen den parallelen Wänden sehr genaue eingehalten werden, da der Abstand die Kapillarwirkung beeinflusst.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. In conventional, ie parallel, side walls, the distance between the parallel walls must be kept very close, as the distance affects the capillary action.
Mit einem erfindungsgemäßen Wärmeübertrager sind die einzuhaltenden Fertigungstoleranzen geringer, da sich der Abstand des Spaltes kontinuierlich über der Höhe ändert und somit auch bei ungenaueren Fertigungstoleranzen in geeignetem Abstand eine Spaltgröße ergibt, die eine positive Kapillarwirkung aufweist.With a heat exchanger according to the invention, 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.
Durch die günstigeren Fertigungstoleranzen können die Kosten für das Herstellungsverfahren gesenkt werden, wobei sich gleichzeitig eine geringere Ausschussrate ergibt. Je nach Abstimmung zwischen Genauigkeit der Fertigungstoleranz und Kosten für das Herstellungsverfahren kann die Ausschussrate gering gewählt werden, oder die Ausschussrate ist etwas höher als ein mögliches Minimum, wobei durch die günstigeren Fertigungstoleranzen bedingt die Herstellungskosten aber insgesamt sinken.Due to the more favorable manufacturing tolerances, the cost of the manufacturing process can be reduced, at the same time results in a lower reject rate. Depending on the agreement between accuracy of the manufacturing tolerance and cost of the manufacturing process, 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.
Gemäß der Erfindung ist am Kontaktpunkt mit einem Boden des Sammelkastens ein seitlicher Abstand zwischen der ersten mittleren Seitenwand und der zweiten mittleren Seitenwand vorgesehen, ist der Spalt zwischen der ersten und der zweiten mittleren Seitenwand im Wesentlichen V-förmig und ist bis zu einer definierten Höhe über dem Boden ein kontinuierlicher und streng monoton steigender Abstandsverlauf zwischen der ersten mittleren Seitenwand und der zweiten mittleren Seitenwand gegeben.According to the invention, at the point of contact with a bottom of the header tank, there is a lateral clearance between the first middle side wall and the second middle side wall, 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.
Ein kontinuierlicher und streng monoton steigender Abstandsverlauf ist vorteilhaft, da dadurch im wesentlichen unabhängig von den Fertigungstoleranzen sich immer ein geeigneter seitlicher Abstand ergibt.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.
In einer weiteren bevorzugten Weiterbildung der Erfindung ist an wenigstens einer Seitenwand wenigstens eine Stabilitätseinrichtung oder eine Verteileinrichtung angeordnet. Eine Stabilitätseinrichtung erhöht die Stabilität. Eine Verteil- oder eine Stabilitätseinrichtung kann an einer mittleren oder auch an einer äußeren Seitenwand vorgesehen sein.In a further preferred development of the invention, 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.
Es ist ebenso möglich, dass eine oder mehrere Verteil- oder auch Stabilitätseinrichtungen sowohl auf einer oder beiden mittleren Seitenwänden und/oder auf einer oder mehreren Außenseitenwänden angeordnet sind. Die Verteil- oder auch Stabilitätseinrichtungen können in dem Innenraum der Sammelkammern und/oder im Raum außerhalb vorgesehen sein oder sich innerhalb und außerhalb der Sammelkammern erstrecken.It is also possible for one or more distribution or stability devices to 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.
Vorzugsweise ist eine Längsrichtung an wenigstens einer Verteil- oder Stabilitätseinrichtung im wesentlichen senkrecht zu der Bodeneinrichtung ausgerichtet, so dass sich die Verteil- oder Stabilitätseinrichtung vorzugsweise näherungsweise im wesentlichen senkrecht zu der Oberfläche der Bodeneinrichtung erstreckt.Preferably, 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.
In einer bevorzugten Weiterbildung ist wenigstens eine Verteil- oder Stabilitätseinrichtung als Vertiefungseinrichtung ausgebildet und kann beispielsweise als Rinneneinrichtung oder Einkerbung oder dergleichen geformt sein.In a preferred development, 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.
Dabei ist es möglich, dass die Vertiefungseinrichtung eine Vertiefung in der Außenoberfläche einer Seitenwand einer Sammelkammer ist, die sich beispielsweise von der Bodeneinrichtung aus bis in eine bestimmte Höhe über der Bodeneinrichtung erstreckt. Die Vertiefungseinrichtung kann dabei beispielsweise V-förmig oder auch U-förmig ausgeführt sein, wobei die Breite des U, das heißt die Breite zwischen den Schenkeln des U, um ein Vielfaches größer sein kann als die Tiefe des U.It is possible that 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.
Möglich sind beispielsweise Verhältnisse von Vertiefungsbreite zu Vertiefungshöhe von 1:10 bis 100:1, wobei bevorzugt der Bereich von etwa 1:5 bis 80:1 ist. Bei kerbenartigen Vertiefungseinrichtungen ist ein Verhältnis eher im Bereich 1:1 bevorzugt, während insbesondere bei rillenartigen Vertiefungseinrichtungen auch erheblich größere Werte möglich sind.For example, 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. In the case of notch-like indentation devices, 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.
Insbesondere, aber nicht nur, durch spanlose Fertigungsverfahren hergestellte Vertiefungseinrichtungen oder Stabilitätseinrichtungen im allgemeinen erhöhen die Stabilität in seitlicher Richtung der Seitenwände und somit der Sammelkammern insgesamt.In particular, but not only, 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.
Verteileinrichtungen erleichtern das Verteilen des Flussmittels und des Lötmittels.Distributors facilitate the distribution of the flux and the solder.
Dadurch wird ebenfalls ein verbessertes Fertigungsverfahren erzielt, da die Fertigungstoleranzen bei gleichbleibender oder sogar noch geringerer Ausschussrate reduziert werden können.As a result, an improved manufacturing process is also achieved because the manufacturing tolerances can be reduced while maintaining or even lower reject rate.
Vertiefungseinrichtungen auf den Außenseiten der mittleren Seitenwände bzw. der Kontaktwände sind vorteilhaft, da dadurch sichergestellt wird, dass sich zwischen den Seitenwänden bzw. Schenkeln der Sammelkammern ein Kapillarspalt ausbildet, der je nach Breite der Vertiefungseinrichtung auch großflächig ausgebildet sein kann. Derartige Kapillarspalte, das heißt sowohl schmale als auch großflächige, begünstigen den Flussmitteltransport beim Verlöten, so dass eine zuverlässige Lötverbindung zwischen den Seitenwänden untereinander und der Bodeneinrichtung erzielbar ist.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.
Bei typischen Flachrohrverdampfern für die Klimaanlagen von Automobilen kann die Höhe der Vertiefungen zwischen etwa 0,05 und 0,4 mm betragen, wobei die Breite in dem Bereich zwischen 0,05 mm und 8 oder 10 mm oder noch mehr betragen kann. Hier sei darauf hingewiesen, dass sich diese Zahlenangaben nur auf ein konkretes Beispiel beziehen. Bei solchen und auch bei anderen Flachrohrverdampfern oder auch Verdampfern im allgemeinen sind sowohl kleinere als auch größere Abmessungen möglich.In typical flat tube evaporators for automobile air conditioners, 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.
In einer weiteren bevorzugten Weiterbildung der Erfindung steht wenigstens eine Verteileinrichtung oder wenigstens eine Stabilitätseinrichtung nach außen vor, wobei bevorzugt wenigstens eine Verteil- oder Stabilitätseinrichtung von einer Seitenwand wenigstens einer Sammelkammer nach außen vorsteht. Besonders bevorzugt steht wenigstens eine Stabilitätseinrichtung auf einer der mittleren Seitenwände bzw. der Kontaktseitenwände nach außen vor, so dass an der Stelle einer Stabilitätseinrichtung der seitliche Abstand (bzw. Spalt) zwischen den beiden mittleren Seitenwänden verringert ist.In a further preferred embodiment of the invention, 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. Particularly preferably, 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.
Bevorzugt ist wenigstens eine Verteil- oder Stabilitätseinrichtung als Sickeneinrichtung ausgebildet, welche besonders bevorzugt spanlos gefertigt wird.Preferably, at least one distribution or stability device is designed as a beading device, which is particularly preferably produced without cutting.
Besonders bevorzugt wird eine Mehrzahl von Verteil- oder Stabilitätseinrichtungen vorzugsweise abstandsgleich über wenigstens einem Abschnitt oder auch der gesamten Länge wenigstens einer Sammelkammer verteilt vorgesehen, wobei die Stabilitätseinrichtungen abwechselnd auf den nach außen zeigenden Flächen der mittleren Seitenwand der ersten Sammelkammer und der mittleren Seitenwand der zweiten Sammelkammer angeordnet sein können. Ebenso ist es möglich, dass alle Stabilitätseinrichtungen nur auf einer mittleren Seitenwand bzw. an einer Sammelkammer vorgesehen sind.Particularly preferably, 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.
In einer bevorzugten Weiterbildung der Erfindung nimmt eine Tiefe einer Verteil- oder Stabilitätseinrichtung mit dem Abstand von der Bodeneinrichtung zu. Beispielsweise kann die Tiefe, das heißt der senkrechte Abstand von äußerem Maß der Stabilitätseinrichtung zu Seitenfläche, in der Nähe der Bodeneinrichtung ein Drittel der maximalen Tiefe betragen. Bei nach außen vorstehenden Stabilitätseinrichtungen ist es dann die Höhe gegenüber der Seitenwand, während bei Vertiefungseinrichtungen als Stabilitätseinrichtungen die Tiefe der Vertiefungseinrichtung gegenüber der Seitenwand gemeint ist.In a preferred development of the invention, a depth of a distribution or stability device increases with the distance from the bottom device. For example, 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. With outwardly projecting stability devices it is then the height relative to the side wall, while in recess means as stability means the depth of the recess means relative to the side wall is meant.
In einer bevorzugten Weiterbildung der Erfindung ist in einem Kontaktbereich der mittleren Seitenwände mit der Bodeneinrichtung eine Vertiefung in der Bodeneinrichtung vorgesehen, wobei diese Vertiefung beispielsweise als Bodensicke ausgeführt sein kann, um beispielsweise eine Führung für die Enden der Seitenwände darzustellen.In a preferred embodiment of the invention, 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.
In einer weiteren bevorzugten Weiterbildung der Erfindung weist wenigstens ein Flachrohr im Bereich einer Flanke eine geringere Wandstärke auf als in einem Bereich der Rundung bzw. des Radius.In a further preferred embodiment of the invention, 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.
Diese Weiterbildung ist sehr vorteilhaft, da durch die spezielle Rohrgeometrie am Flachrohr mit dem verstärkten Radius ein geringes Flachrohrgewicht bei hoher Festigkeit erzielbar ist. Daraus resultiert ein leichteres Rohr und somit insgesamt ein geringes Gesamtgewicht. Dadurch sind auch geringere Gesamtkosten erzielbar.This development is very advantageous because a small flat tube weight with high strength can be achieved by the special tube geometry on the flat tube with the reinforced radius. This results in a lighter tube and thus a total low overall weight. As a result, lower overall costs can be achieved.
Vorzugsweise ist die Wandstärke des Flachrohr im Bereich der Flanken um 10 % oder 20 % oder mehr geringer als in einem Bereich des Radius.Preferably, 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.
Vorzugsweise ist das Verhältnis der Wandstärken im Bereich von Wandstärke im Radius zu Wandstärke an der Flanken in einem Bereich von etwa 1,2 bis 3 und besonders bevorzugt in einem Bereich zwischen etwa 1,4 und 2.Preferably, 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.
In einer Ausgestaltung der Erfindung kann die Wandstärke des Flachrohrs im Bereich der Flanken an wenigstens einer Stelle etwa 0,2 bis 0,4 und vorzugsweise 0,3 mm aufweisen. Vor allem in dieser Ausgestaltung beträgt die Wandstärke des Flachrohrs im Radiusbereich dann an wenigstens einer Stelle zwischen 0,4 und 0,7 mm und vorzugsweise etwa 0,5 bis 0,6 mm.In one embodiment of the invention, 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. Especially in this embodiment, 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.
Dadurch, dass die Wandstärke im Bereich der Flanken reduziert wird, wird insgesamt ein erheblicher Teil des Gewichts der Flachrohre eingespart.The fact that the wall thickness is reduced in the region of the flanks, a total of a considerable part of the weight of the flat tubes is saved.
In einer bevorzugten Weiterbildung der Erfindung ist wenigstens eine Oberteileinrichtung einstückig gefertigt, so dass die mittlere und die äußere Seitenwand und die obere Deckenwand der Oberteileinrichtung einstückig sind.In a preferred embodiment of the invention, 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.
In einer bevorzugten Weiterbildung der Erfindung ist wenigstens eine Oberteileinrichtung oder sind zwei Oberteileinrichtungen einstückig mit der Bodeneinrichtung gefertigt. Dann ist es möglich, mit einem Sammelkasten, der zwei Sammeleinrichtungen umfasst, aus einer vorgefertigten Platine durch zum Beispiel Biegen den im wesentlichen gesamten Sammelkasten einstückig herzustellen.In a preferred development of the invention, 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.
Um die Unterteilung des Sammelkastens in wenigstens zwei Kammereinrichtungen zu bewerkstelligen, ist es möglich, den Sammelkasten einteilig dergestalt auszuführen, dass die sich an das Bodenelement anschließenden Seitenelemente in Richtung des Bodenelements gekrümmt werden, und schließlich miteinander sowie mit dem Bodenelement verbunden werden.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.
Zu diesem Zwecke ist es nötig, die Seitenelemente miteinander und mit dem Bodenelement dauerhaft zu verbinden, beispielsweise zu verlöten. So ist es z. B. bekannt, die Seitenelemente derart auszuführen, dass sie im wesentlichen lotrecht auf das Bodenelement zulaufen, und daher miteinander sowie mit dem Bodenelement flächig verlötet werden können.For this purpose, it is necessary to permanently connect the side elements with each other and with the bottom element, for example, to be soldered. So it is z. B. known to perform the side elements such that they run substantially perpendicular to the bottom element, and therefore can be soldered flat with each other and with the bottom element.
Die Bodeneinrichtung kann in der Weise vorbereitet werden, dass diese die gewünschten Abmessungen oder auch die benötigten Öffnungen oder Aussparungen für die Verbindung mit den Seiten- bzw. Oberteileinrichtungen aufweist. Da der Sammelkasten bereits vor dem endgültigen Verlöten in seine endgültige Form gebracht werden kann, ergibt sich auch vor dem Löten schon eine hohe Festigkeit der Einrichtung.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.
In einer bevorzugten Weiterbildung der Erfindung ist wenigstens eine Anschlussöffnung der Wärmeübertragung auf einem Längsseitenabschnitt des Sammelkastens angeordnet, wobei es ebenso möglich ist, dass eine Anschlussöffnung an einer Stirnseite eines Sammelkastens angeordnet ist oder dass beide Anschlussöffnungen an der Stirn- oder auf einer oder beiden Längsseiten des Sammelkastens vorgesehen sind.In a preferred embodiment of the invention, at least one 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.
In einer bevorzugten Weiterbildung der Erfindung ist der Sammelkasten mit zwei Reihen hintereinander angeordneter Wärmeübertragungsrohre verbunden. Ebenso ist es möglich, dass auch drei oder noch mehr Reihen an Wärmeübertragungsrohren mit dem Sammelkasten verbunden sind. Vorzugsweise ist für jede Reihe von Wärmeübertragungsrohren eine Sammelkammer vorgesehen, aber es ist auch möglich, dass für jeweils beispielsweise zwei (oder drei oder mehr) Rohrreihen von Wärmeübertragungsrohren eine Sammelkammer vorgesehen ist.In a preferred embodiment of the invention, 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. Preferably, 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.
In einer bevorzugten Weiterbildung ist wenigstens eine Seitenwand mit wenigstens einer Lascheneinrichtung oder dergleichen versehen, die in Aussparungen der Bodeneinrichtungen eingesteckt ist. Dabei kann der Einsteckpunkt verstemmt werden. Ebenso kann der Verstemmungspunkt in der Führungssicke nach dem Umformen des Sammlers gestanzt werden. Ein Verstemmen des Einsteckpunktes vor dem Lösten bietet den Vorteil einer festen Verbindung der zu verlötenden Teile.In a preferred embodiment, 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. Likewise, 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.
Vorzugsweise ist an wenigstens einem und besonders bevorzugt an beiden Stirnenden der Sammelkammern ein Abschlussdeckel angeordnet.Preferably, a cover plate is arranged on at least one, and more preferably on both ends of the collection chambers.
Weiterhin ist es bevorzugt, dass eine Führungssicke für die Trennwand vorgesehen ist, so dass die Trennwand im wesentlichen nicht verkanten kann und sich eine verbesserte Anlage der Trennwand am Sammler durch die U-förmige Einfassung ergibt. Durch eine U-förmige Einfassung oder Sicke im Bereich der Anlageflächen der Seitenwände bzw. Schenkel ergeben sich ebenfalls größere Verlötflächen.Furthermore, it is preferred that 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. By a U-shaped enclosure or bead in the region of the contact surfaces of the side walls or legs also result in larger solder pads.
Durch die Kombination eines zum Beispiel V-förmigen Spalts zwischen den inneren Seitenwänden der beiden Sammelkammern und weiteren Verteil- oder Stabilitätseinrichtungen in Form von hervorstehenden Sicken oder Vertiefungen ergibt sich die Möglichkeit eines größeren Toleranzfeldes, so dass bei einem konkreten Beispiel der Spaltabstand am geöffneten Ende des V-Spaltes um bis zu 50 % variieren und sich zwischen 0,15 und 0,23 mm bewegen kann, während er am unteren Ende an der Bodeneinrichtung zwischen 0,05 und 0,11 mm liegt.The combination of, for example, a 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.
Durch die Stabilitätseinrichtungen wird sichergestellt, dass immer ein ausreichender Kapillarspalt für den Flussmitteltransport vorhanden ist, unabhängig von fertigungsbedingten Formabweichungen.The stability devices ensure that there is always a sufficient capillary gap for the flux transport, regardless of production-related form deviations.
Zu kleine bzw. zu große Spalte bei konventionellen Wärmeübertragern behindern den Flussmitteltransport insbesondere in der Aufwärmphase, so dass engere Fertigungstoleranzen eingehalten werden müssen oder ein größerer Ausschuss in Kauf genommen wird.Too small or too large gaps in conventional heat exchangers hinder the flux transport, especially in the warm-up, so that tighter manufacturing tolerances must be respected or a larger committee is accepted.
Weitere Vorteile und Anwendungsmöglichkeiten der Erfindung werden im folgenden in bezug auf die Zeichnungen beschrieben. Darin zeigen:
Figur 1- eine perspektivische Ansicht eines erfindungsgemäßen Wärmeübertragers gemäß einer ersten bevorzugten Ausführungsform;
Figur 2- eine Teilansicht des Sammelkastens aus dem
Ausführungsbeispiel gemäß Figur 1 ; Figur 3- eine Teilansicht eines Oberteils des Sammelkastens nach
Figur 2 ; Figur 4- den
Sammelkasten nach Figur 1 im Schnitt; Figur 5- das Detail
A aus Figur 2 ; Figur 6- eine schematische Seitenansicht eines Teils des Sammelkastens des Wärmeübertragers nach
Figur 1 ; Figur 7- eine schematische Darstellung eines zweiten Ausführungsbeispiels eines Sammelkastens;
Figur 8- eine schematische Seitendarstellung einer dritten Ausführungsform eines Sammelkastens eines Wärmeübertragers;
- Figur 9
- ein Teil einer geschnittenen Aufsicht A-A auf den
Sammelkasten nach Figur 8 ; Figur 10- ein erfindungsgemäßes Flachrohr im Schnitt; und
Figur 11- ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Wärmeübertragers in Seitenansicht.
- FIG. 1
- a perspective view of a heat exchanger according to the invention according to a first preferred embodiment;
- FIG. 2
- a partial view of the collecting tank from the embodiment according to
FIG. 1 ; - FIG. 3
- a partial view of an upper part of the header after
FIG. 2 ; - FIG. 4
- after the collection box
FIG. 1 on average; - FIG. 5
- the detail A off
FIG. 2 ; - FIG. 6
- a schematic side view of a portion of the header of the heat exchanger after
FIG. 1 ; - FIG. 7
- a schematic representation of a second embodiment of a collecting tank;
- FIG. 8
- a schematic side view of a third embodiment of a header of a heat exchanger;
- FIG. 9
- a part of a sectional view AA on the collection box
FIG. 8 ; - FIG. 10
- an inventive flat tube in section; and
- FIG. 11
- a further embodiment of a heat exchanger according to the invention in side view.
Ein erstes Ausführungsbeispiel des erfindungsgeinäßen Wärmeübertragers, der als Verdampfer für eine Fahrzeugklimaanlage ausgeführt ist, wird nun mit Bezug auf die
Der in
Der obere Sammelkasten 2 umfasst eine erste Sammelkammer 3 und eine dazu parallele zweite Sammelkammer 4, deren Stirnseiten mit Deckeln 5 verschlossen sind. Auf einer Längsseite 8 des ersten Sammelkastens 3 ist der Zulauf 6 und der Ablauf 7 für das zu verdampfende Kühlmedium vorgesehen.The
An dieser Stelle sei jedoch darauf hingewiesen, dass Zu- und Ablauf nicht nur auf einer Längsseite 8 einer oder beider Sammelkammer(n) des Sammelkastens 3 vorgesehen sein können, sondern dass es auch möglich ist, dass der Zulauf an einer Längsseite des ersten Sammelkastens vorgesehen ist und der Ablauf auf einer Längsseite des zweiten Sammelkasten.It should be noted at this point, however, that inlet and outlet can not only be provided on one
Ebenso ist es auch möglich, dass Zu- und Ablauf an den Stirnseiten einer oder beider Sammelkammern vorgesehen sind, so wie es in dem Ausführungsbeispiel gemäß
Bei dem in
Das Oberteil 13 der ersten Sammelkammer 3 ist hier im Ausführungsbeispiel einstückig mit dem Boden 12 des Sammelkastens gefertigt. Auch das zweite Oberteil 23 kann einstückig mit dem Boden 12 gefertigt sein.The
Das Oberteil 13 der ersten Sammelkammer 3 umfasst eine äußere Seitenwand 14, eine obere Wand 16 und eine mittlere Seitenwand 15, die hier im Ausführungsbeispiel etwa in der Mitte des Sammelkastens 2 angeordnet ist.The
Durch Umbiegen eines seitlichen Randbereiches des Bodens 12 entsteht das Oberteil 13 mit der äußeren Seitenwand 14, der mittleren Seitenwand 15 und der oberen Seitenwand 16, wobei der Übergang zwischen den einzelnen Wandbereichen fließend ist. Die in der Mitte des Bodens 12 liegende "mittlere" Seitenwand 15 wird dabei durch das Ende des einstückigen Bauteils gebildet.By bending over a lateral edge region of the bottom 12, the
Wie in
In dem Boden 12 des Sammelkastens 2 sind Rohraufnahmen 17 für die anzuschließenden Flachrohre 9 vorgesehen.In the bottom 12 of the
In einem Endbereich der ersten Sammelkammer 3 und der zweiten Sammelkammer 4 sind jeweils in den mittleren Seitenwänden 15 und 25 Überströmöffnungen 21 vorgesehen, die ein Überströmen des Kältemittels von der ersten Sammelkammer 3 zur zweiten Sammelkammer 4 bzw., je nach Ausführungsform, in umgekehrter Richtung, zu ermöglichen.In one end region of the
In
In
Im Ausführungsbeispiel ist für den Abstand 33 eine Entfernung von 0,1 mm vorgesehen, und in einer Höhe 29 von etwa 10 mm beträgt der Abstand 32 ungefähr 0,3 mm, so dass der Öffnungswinkel zwischen den mittleren Wänden 15 und 25 etwa 1° beträgt. Der V-förmige Spalt 22 ermöglicht eine zuverlässige Kapillarwirkung beim Verlöten.In the embodiment, a distance of 0.1 mm is provided for the
In der Höhe 29 über der Bodeneinrichtung 12 ist in der ersten Sammelkammer 10 eine Knickstelle 10 und in der zweiten Sammelkammer 4 eine Knickstelle 20 vorgesehen, wie auch in der nicht so schematischen Zeichnung gemäß
In
In dem V-förmigen Spalt 22 ist bei diesem Ausführungsbeispiel eine Sicke 31 bzw. sind mehrere Sicken 31 vorgesehen, die regelmäßig in gewissen Abständen über der Länge des Sammelkastens 2 angeordnet sind.In the V-shaped
Die einzelnen Sicken 31 können beispielsweise nur auf der Außenseite der mittleren Seitenwand 25 vorgesehen sein, es ist jedoch bevorzugt, dass sie abwechselnd auf der Außenseite der mittleren Wand 15 und der mittleren Wand 25 vorgesehen sind. Durch fertigungstechnische Verhältnisse bedingt können die Sicken allerdings auch nur auf einer Außenseite einer mittleren Seitenwand (15 oder 25) vorgesehen sein.For example, the individual beads 31 may be provided only on the outside of the
Die äußere Form der Sicke 31 ist im wesentlichen auch V-förmig, so dass sie im Bereich des Bodens 12 eine kleinere Tiefe, d. h. einen kleineren Abstand von der Außenseite der Wand aufweist als im oberen Bereich in dem Abstand 29 in der Höhe des Knickpunktes 20. Die Ausmaße der Sicke 31 können an dem Spalt 22 derart angepasst werden, dass die Tiefe im Bodenbereich etwa 0,1 mm und in der Höhe 29 über dem Boden 12 etwa 0,3 mm beträgt. Die Höhe 59 der Sicke muss nicht, aber kann mit der Höhe 29 der Knickpunkte 10, 20 übereinstimmen.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
Es sind allerdings auch andere Maße möglich, so dass diese Zahlenangaben nur beispielhaft zu verstehen sind. Insbesondere ist es möglich, dass die Abmessungen der Sicke um einen gewissen Prozentanteil kleiner sind als die Abmessungen 32 bzw. 33, die den vorgesehenen Abstand der Seitenwände 15 und 25 definieren. Dann garantieren die Sicken einen Mindestabstand.However, other dimensions are possible, so that these figures are to be understood only as an example. In particular, it is possible that the dimensions of the bead are smaller by a certain percentage than the
Zusätzlich zum Ausführungsbeispiel gemäß der
Durch die Sicken 31 entstehen großflächige Kapillarspalte, die ein gutes Verteilen des Flussmittels und des Lötmittels erlauben. Weiterhin erfüllen die Sicken 31 die Funktion eines Abstandshalters zwischen den Außenseiten der mittleren Seitenwände 15 und 25. Es wird zuverlässig gewährleistet, dass der Abstand nicht zu gering ist, um eine zuverlässige Lötverbindung sicherzustellen.By 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
Im Ausführungsbeispiel gemäß
Auch in diesem Ausführungsbeispiel gibt die Oberflächenprofilierung, die durch die Rinnen 35 entsteht, dem bzw. den Oberteil (en) 13 bzw. 23 der beiden Sammelkammern 3, 4 Stabilität.Also in this embodiment, the surface profiling, which is formed by the
Die Rinnen 35 erfüllen die Funktion des Verteilens von Fluss- und Lötmittel, so dass eine sichere Verbindung der Seitenwände 15 und 25 mit dem Boden 12 ermöglicht wird.The
Wie schon im vorhergehenden Ausführungsbeispiel ist im Kontaktbereich der mittleren Seitenwände 15 und 25 und des Bodens 12 eine Vertiefung 30 vorgesehen.As in the previous embodiment, a
In
Die Rinnen sind in diesem Ausführungsbeispiel durch Stauchung des Materials beim Biegeprozess zur Formherstellung entstanden, so dass sich auf jeder der Außenseiten der mittleren Seitenflächen die dargesellten Vertiefungen ergeben.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.
Es ist eine Mehrzahl von Vertiefungen vorgesehen, die hier auch bei den mittleren Seitenwänden den gleichen Abstand 61 zueinander aufweisen. Die Vertiefungen auf der Seitenwand 15 sind gegenüber den Vertiefungen auf der Seitenwand 25 um ein Maß 62 seitlich verschoben, das vorzugsweise der Hälfte des Abstandes 61 entspricht.It is provided a plurality of wells, which here have the
Auch in dem Ausführungsbeispiel gemäß
Das Flachrohr weist Außenabmessungen senkrecht zur Strömungsrichtung eines Kältemittels von einer Länge 41 von 30 mm und einer Breite 42 von 3 mm auf. Es sind aber auch andere Abmessungen möglich. Im Bereich des Radius bzw. der Rundungen 43 hat die Wandstärke ein Maß 44 von 0,55 mm, während im Bereich der Flanken 49 eine deutlich geringere Wandstärke 45 von 0,3 mm vorliegt.The flat tube has outer dimensions perpendicular to the flow direction of a refrigerant of a
Das Flachrohr ist über der Breite in eine Anzahl von 8 Strömungskammern unterteilt, wobei die mittleren 6 eine Innenbreite von 3,2 mm aufweisen. Die Trennwände 46 haben eine Breite 47 von 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
Durch die erheblich unterschiedlichen Wandstärken von Radiusbereich zu Flankenbereich wird insgesamt ein deutlich geringeres Gesamtgewicht des Flachrohrs erzielt, da im Bereich der Radien 43 eine relativ große Wandstärke vorliegt, während im Bereich der Flanken eine solche Wandstärke nicht erforderlich ist.Due to the significantly different wall thicknesses of radius range to flank area a significantly lower total weight of the flat tube is achieved overall, since in the region of the
Die
Mit Trennwänden 50 und 51 sind die Sammelkästen 2 und 11 in mehrere Längsabschnitte unterteilt, so dass sich ein mäanderförmiger Strömungsweg des Verdampfungsmediums über dem Wärmeübertrager 60 ergibt.With
In diesem Ausführungsbeispiel sind die Anschlüsse 6 und 7 für Zu- und Ablauf auf den Stirnseiten des Sammelkastens 2 an den Sammelkammern 3 und 4 vorgesehen.In this embodiment, the
Bezüglich der weiteren Ausgestaltung des Wärmeübertragers und insbesondere der Ausgestaltung und der Strömungsverhältnisse der Sammelkästen und des übrigen Wärmeübertragers wird auf die
Ebenso können weitere Details des Wärmeübertragers auch gemäß der
Claims (23)
- A heat exchanger (1), in particular an evaporator for an air conditioning system of motor vehicles, comprising at least one header tank (2) having at least two header chambers (3, 4), wherein substantially each header chamber (3, 4) is substantially defined by a base device (12) and a top device (13); wherein the top device (13) of a first header chamber (3) comprises a first middle side wall (15) and the top device (23) of a second header chamber (4) comprises a second middle side wall (25); wherein at least a section of the first middle side wall (15) is positioned adjacent to the second middle side wall (25); wherein there is a gap (22) between the first and the second middle side wall (15, 25); wherein a lateral distance of the first middle side wall (15) from the second middle side wall (25) increases with the distance from the base device (12) at least over a portion of the height (69) of the header tank (2), characterized in that a lateral distance (33) between the first middle side wall (15) and the second middle side wall (25) is provided at the contact point with a base (12) of the header tank, and that the gap (22) is substantially V-shaped, and that there is a continuous and strictly monotonically increasing distance between the first middle side wall (15) and the second middle side wall (25) up to a defined height (29) above the base (12).
- The heat exchanger according to claim 1, characterized in that at least one stabilizing device is provided on at least one side wall (14, 15; 24, 25) to increase stability.
- The heat exchanger according to claim 2, characterized in that a longitudinal direction of at least one stabilizing device (31, 35) is substantially perpendicular to the base device (12).
- The heat exchanger according to at least one of claims 2 or 3, characterized in that at least one stabilizing device (35) is configured as a depression system (35).
- The heat exchanger according to at least one of claims 2 to 4, characterized in that at least one stabilizing device (35) is substantially configured as a groove system (35).
- The heat exchanger according to at least one of claims 2 to 5, characterized in that at least one stabilizing device (35) is substantially configured as a groove (35).
- The heat exchanger according to at least one of claims 2 to 6, characterized in that at least one stabilizing device (31) projects outwardly.
- The heat exchanger according to claim 7, characterized in that at least one stabilizing device (31, 35) is configured as a (31) crease system.
- The heat exchanger according to at least one of the preceding claims, characterized in that at least one partition is provided which comprises a guiding crease.
- The heat exchanger according to at least one of claims 2 to 8, characterized in that a depth (36) of at least one stabilizing device (31, 35) increases with a distance (29) from the base device (21).
- The heat exchanger according to at least one of the preceding claims, characterized in that in a contact region of the middle side walls (15, 25) with the base device (12) a base recess (30) is positioned.
- The heat exchanger according to at least one of the preceding claims, characterized in that at least one flat tube (40) has a smaller wall thickness (42, 45) in the region of a flange (49) than in a region of a radius (43).
- The heat exchanger according to claim 12, characterized in that at least one flat tube (40) has a wall thickness (45) in the region of the flanges (49) smaller by at least 20% than in a region of the radius.
- The heat exchanger according to at least one of claims 12 and 13, characterized in that at least one flat tube (40) has a wall thickness of approximately 0.3 mm at least at one position in the region of the flanges (49).
- The heat exchanger according to at least one of claims 12 to 13, characterized in that at least one flat tube (40) has a wall thickness (44) of approximately 0.5 mm at least at one positon in the region of a radius (43).
- The heat exchanger according to at least one of the preceding claims, characterized in that at least one top device (13, 23) is manufactured integrally.
- The heat exchanger according to at least one of the preceding claims, characterized in that at least one top device (13, 23) is manufactured integrally with the base device (12).
- The heat exchanger according to at least one of the preceding claims, characterized in that at least one connection aperture (6, 7) is arranged on a longitudinal side section (8) of the header tank (2).
- The heat exchanger according to at least one of the preceding claims, characterized in that the header tank (2) is connected with two rows of heat exchanger tubes (9) arranged in-line.
- The heat exchanger according to at least one of the preceding claims, characterized in that the base device (12) and/or the top device (13, 23) are formed of a pre-treated plate.
- The heat exchanger according to at least one of the preceding claims, characterized in that at least one side wall (14, 15; 24, 25) comprises at least one tab (19) which is inserted in a recess (21) of the base device.
- The heat exchanger according to at least one of the preceding claims, characterized in that a cover lid (5) is arranged at least at one end face (38) of at least one header chamber (3, 4).
- The heat exchanger according to at least one of the preceding claims, characterized in that at least one connection aperture (6, 7) is arranged at one end face (38) of at least one header chamber (3, 4) of the header tank (2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10230394 | 2002-07-05 | ||
| DE10230394 | 2002-07-05 | ||
| PCT/EP2003/007195 WO2004005827A1 (en) | 2002-07-05 | 2003-07-04 | Heat exchanger in particular an evaporator for a vehicle air-conditioning unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1530701A1 EP1530701A1 (en) | 2005-05-18 |
| EP1530701B1 true EP1530701B1 (en) | 2016-04-13 |
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ID=29723731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03762629.8A Expired - Lifetime EP1530701B1 (en) | 2002-07-05 | 2003-07-04 | Heat exchanger in particular an evaporator for a vehicle air-conditioning unit |
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| Country | Link |
|---|---|
| US (1) | US7273093B2 (en) |
| EP (1) | EP1530701B1 (en) |
| JP (1) | JP2005532525A (en) |
| CN (1) | CN100510598C (en) |
| AU (1) | AU2003250891A1 (en) |
| BR (1) | BR0305422B1 (en) |
| DE (1) | DE10330268A1 (en) |
| WO (1) | WO2004005827A1 (en) |
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| JP3670135B2 (en) * | 1998-05-06 | 2005-07-13 | 俊臣 林 | Method for manufacturing tubular body integrally provided with branch pipe |
| DE19826881B4 (en) * | 1998-06-17 | 2008-01-03 | Behr Gmbh & Co. Kg | Heat exchanger, in particular evaporator |
| 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 (en) * | 2000-11-07 | 2017-03-23 | Mahle International Gmbh | Heat exchanger |
| CZ20032624A3 (en) * | 2001-03-29 | 2004-08-18 | Showaádenkoák@Ák | Collector for use in heat-exchange apparatuses, a heat-exchange apparatus and process for producing thereof |
| DE10132485B4 (en) * | 2001-07-05 | 2018-06-28 | Mahle International Gmbh | Collecting box for a heat exchanger |
-
2003
- 2003-07-04 EP EP03762629.8A patent/EP1530701B1/en not_active Expired - Lifetime
- 2003-07-04 DE DE2003130268 patent/DE10330268A1/en not_active Withdrawn
- 2003-07-04 AU AU2003250891A patent/AU2003250891A1/en not_active Abandoned
- 2003-07-04 CN CNB038159309A patent/CN100510598C/en not_active Expired - Lifetime
- 2003-07-04 BR BRPI0305422-5B1A patent/BR0305422B1/en not_active IP Right Cessation
- 2003-07-04 WO PCT/EP2003/007195 patent/WO2004005827A1/en not_active Ceased
- 2003-07-04 JP JP2004518715A patent/JP2005532525A/en not_active Ceased
- 2003-07-04 US US10/518,613 patent/US7273093B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09196594A (en) * | 1995-11-14 | 1997-07-31 | Mitsubishi Heavy Ind Ltd | Heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10330268A1 (en) | 2004-01-15 |
| CN1666076A (en) | 2005-09-07 |
| AU2003250891A1 (en) | 2004-01-23 |
| US20060037740A1 (en) | 2006-02-23 |
| JP2005532525A (en) | 2005-10-27 |
| BR0305422B1 (en) | 2013-12-24 |
| CN100510598C (en) | 2009-07-08 |
| EP1530701A1 (en) | 2005-05-18 |
| BR0305422A (en) | 2004-07-27 |
| WO2004005827A1 (en) | 2004-01-15 |
| US7273093B2 (en) | 2007-09-25 |
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