EP0929783B1 - Sammler eines wärmetauschers für kraftfahrzeuge mit kammerunterteilung aus sich kreuzenden flachstegen - Google Patents

Sammler eines wärmetauschers für kraftfahrzeuge mit kammerunterteilung aus sich kreuzenden flachstegen Download PDF

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Publication number
EP0929783B1
EP0929783B1 EP98924278A EP98924278A EP0929783B1 EP 0929783 B1 EP0929783 B1 EP 0929783B1 EP 98924278 A EP98924278 A EP 98924278A EP 98924278 A EP98924278 A EP 98924278A EP 0929783 B1 EP0929783 B1 EP 0929783B1
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EP
European Patent Office
Prior art keywords
header according
die
cover
header
pegs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98924278A
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German (de)
English (en)
French (fr)
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EP0929783A1 (de
Inventor
Roland Haussmann
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.)
Valeo Klimatechnik GmbH and Co KG
Original Assignee
Valeo Klimatechnik 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
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Publication of EP0929783A1 publication Critical patent/EP0929783A1/de
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Publication of EP0929783B1 publication Critical patent/EP0929783B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—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
    • 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
    • F28F9/0217—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions the partitions being separate elements attached to header boxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/906—Reinforcement

Definitions

  • the invention relates to a collector of a Heat exchanger according to the preamble of claim 1.
  • Such a collector is from DE-C-195 15 526 known.
  • collector should not only be used understood an intermediate collector or collector on the output side become, but also an input-side distributor.
  • Such multi-part collectors are widely known. So far, you have generally a lid, one Pipe base or a division of sheet metal or plate-shaped material made, for example, cover were deep drawn from sheet metal. For special constructions Injection molded parts have been used so far. So it was in an evaporator, especially for automotive air conditioning systems to be used, according to DE-31 50 187 C2 for a distributor a sandwich construction made of injection molded plates, in which the Distributors required chambers by appropriate Groove training was won.
  • the invention has for its object the possibilities die casting for collectors in heat exchangers make it even more usable for motor vehicles, than has been considered so far.
  • the invention represents one of the above three Aspects in the foreground and relates the remaining two further aspects as developments of the invention.
  • the invention provides in contrast die-cast parts before for use and preferably also for the jacket (cf. claim 12), which in many aspects in their shaping the preformed Sheet metal parts correspond.
  • the invention also continues Consider combining die cast parts with sheet metal parts. Shaped sheet metal parts are present in the present Connection usually soldered by braze. This conventional type of connection by soldering, in particular by Brazing is used in the context of the invention under whole or partial inclusion of die cast parts taken over by a solderable material for the die-cast part in question Alloy is used. When combined with at least one-sided solder-plated sheet metal parts can then even from a corresponding solder coating of the relevant Completely disregard the die-cast part.
  • the pin according to claim 2 (with the training of claims 3 to 10 and 14) have the advantage, inter alia, before soldering the collector one mechanically in itself contiguous pre-assembly of the cover and tube sheet of the To be able to make collector so that thereby the soldering gap remain minimal and accordingly security against Leakage when soldering is maximum.
  • the flat tube heat exchanger shown in the figures is four-flow in all the illustrated embodiments trained and as an evaporator of a refrigerant circuit designed.
  • the evaporator serves as the internal heat exchange medium a refrigerant such as especially fluorocarbon, which enters the heat exchanger via a feed line 14 and via an outlet line 16 from the heat exchanger emerges again.
  • the supply line comes in the refrigerant circuit from its liquefier.
  • the output line 16 leads to Refrigerant circuit compressor.
  • the refrigerant With an even number of floods in the heat exchanger the refrigerant is distributed on the input side from the feed line 14 through to the individual flat tubes a so-called distributor.
  • the refrigerant becomes the output side collectively fed to the output line 16. If also assign the distribution and collection to separate boxes can, both functions are in all embodiments united in a common collector 18.
  • This collector 18 is then on an end face 4 the flat tubes 2 arranged while on the other end 4 of the flat tubes 2 only between the floods a flow reversal takes place, for example, by the individual bowls 20 depicted in FIG. 1 or according to the pictorial representation in Fig. 2 under integration the deflection functions of such individual bowls in a common Deflection collector 22.
  • the individual bowls 20 according to FIG. 1 can also if necessary to a unit by not shown Connecting parts can be integrated.
  • the multiple flow means at least one flow reversal in the area of the individual formed by the chambers 12 Channels in each flat tube 2.
  • the cup 20 or the deflection collector 22 then needs no further Interdivision, it just has to unique redirection function can be guaranteed.
  • multi-flow redirection is required at least in each case In the case of the four-flow system, the partition shown in FIG. 2 24, so that in this case the four flow double simple redirection in the respective bowl 20 or in the respective deflection collector 22 takes place. At an even higher one If necessary, the number of floods must then be the number of partitions 24 can be increased.
  • the collector 18 is basically from a tube sheet 26 and a lid 28, where appropriate further parts are provided for the construction of the collector 18 can be, which are at least partially specified below are.
  • the Collector 18 at least a two-chamber training, which separates an input side from the output side.
  • the chamber division, generally designated 30 at least one flat web in the form of a longitudinal web 32, which is the entrance area communicating with the feed line 14 in the collector 18 from a continuous along the collector 18 Exit chamber 34 separates that with the output line 16 communicates.
  • the evaporator also needs one if possible even supply of the refrigerant on the inlet side all flat tubes 2.
  • the feed takes place to neighboring groups of flat tubes where at least some groups have a higher number of flat tubes than have one, including the number of flat tubes per group can change.
  • 5 is a same number of two flat tubes per group provided for a total of ten flat tubes.
  • Any group of An inlet chamber 36 is assigned to flat tubes, which directly with the relevant group of flat tubes communicated.
  • the entry chambers 36 are in the Chamber subdivision 30 by transverse webs designed as flat webs 38 separated from each other.
  • crossbars 38 go at a right angle from only one Side of the longitudinal web 32 from.
  • the feed line 14 communicates with the individual Inlet chambers 36 each have a one running in the collector 18 own supply line 44, which in the exemplary embodiments is designed differently.
  • the block is usually used in the finished heat exchanger from flat tubes 2 and zigzag fins 8 laterally through each a side plate adjacent to the outer zigzag lamella 46 completed, so that the side plates 46 a outer frame for the outside air flowing into the heat exchanger block form.
  • the flat tubes 2, the zigzag fins 8, the tube sheet 26 and the cover 28 of the collector together with the if necessary provided chamber division 10 and the side panels 46 of the heat exchanger exist, appropriately as well like the supply line 14 and the output line 16, made of aluminum and / or an aluminum alloy and are included the sections of the line connections adjacent to the heat exchanger brazed to the finished evaporator.
  • connection piece can pass into the collector 18, to two corresponding Connection piece 48 of a thermostatically controlled block valve 50 connected. This indicates the invisible opposite side two further supply side and outlet connection on.
  • the own supply lines 44 are Inlet chambers 36 integrated in a distribution pipe 54, which a tubular jacket 56 and an inner star-shaped partition 58, whose free segments have their own supply lines 44 form. To enable these own leads 44 in each case at the same peripheral point of the tubular jacket 56 in the associated inlet chamber 36 open, the runs star-shaped subdivision 58 spiral or helical.
  • the respective own supply line 44 communicates with the associated inlet chamber 36 in each case via an Pipe jacket 56 of the distribution pipe 54 arranged outlet opening 60. If necessary, the respective outlet openings 60 also for direct injection into the entry chamber design throttle-like and dimension such that the pressure differential between condensing and evaporating pressure is essentially broken down.
  • 3 is an orientation the outlet opening on the wall of the inlet chamber 36 shown; the corresponding angle may be necessary can be selected without direct alignment on the chambers 12 of the flat tubes 2 is excluded.
  • the chamber subdivision 30 consists of the two longitudinal webs 32 and 40 and the crossbars 38 crossing them an integral die-cast or injection molded part, in the frame of the invention, the terms die casting and injection molding synonymous be understood.
  • connection points To connect the chamber partition 30 with both the cover 28 and the tube sheet 26 are the connection points the longitudinal webs 32 and 40 with the flat webs 38 each provided with a columnar reinforcement 62, which on both opposite sides of the chamber division 30 in cones 64 tapering outwards pass over to each other on both sides of the chamber subdivision and aligned with the columnar reinforcements 62.
  • These pins 64 are integral with the die casting Chamber subdivision 30 with trained and serve for connection both with the tube sheet 26 and with the cover 28, 3 a connection type is illustrated, namely that of FIG. 6c described below.
  • the grid is the pin 64 and 66 chosen so that it is in the grid the connection points of the flat tubes 2 each boxed is, so that it is not mechanically too unfavorable Interaction of the tenon joints of the chamber subdivision 30 with the tube sheet on the one hand and the flat tubes 2 with the Rohrêt on the other hand comes.
  • An eccentric is shown Nesting, which can also be provided in the middle can.
  • the sheet only needs in the variant of Fig. 6a to be embossed in a cup-like manner, in which case the embossment 68 the relevant pin 64 or 66 with its tapered The end engages and is brazed there.
  • This way of connection would be a transfer of the connection type of Flat webs, in particular the longitudinal webs 32 and 40, the chamber subdivision 30 with the cover 28 and / or the Tube sheet 26.
  • Fig. 6a shows a simple implementation, which in turn is brazed.
  • Fig. 6c is carried out according to Fig. 1 Pin upset on the outside, so that it has an external positive undercut locking forms.
  • 6d is additionally that of the others Embodiments with the exception of the conical bevel cones of the same thickness, thickened so columnarly, that an undercut also on the inside of the collector 18 takes place in connection with the upsetting in the sense 6c a complete encompassing of the sheet of Tube bottom and cover causes.
  • Even in the embodiments 6b to 6d is the cup-like shape of the Fig. 6a taken, but also a through hole is present in this cup-shaped shape. This increases the dimensional stability of the sheet metal structure.
  • Fig. 4 it can also be seen that in the area of Entry chambers 36, the transverse webs 38 each with a top approximately semicircular recess 70 are provided, in which the distribution pipe 54 is inserted according to FIG. 3. With his Training from brazeable aluminum or a corresponding Aluminum alloy can then solder the manifold in the manner described with the entire heat exchanger respectively.
  • the variant according to FIG. 2 is correct with the embodiment 3 and 4 with the exception that that on the distribution pipe 54 and the matched to this Recesses 70 is dispensed with. Instead are your own Supply lines 44 to the individual inlet chambers 36 additionally also in addition to the die-casting of the chamber subdivision 30 integrally formed in this die casting.
  • the collector has this 18 seen in the direction of extension of the flat tubes two levels.
  • the lower level are all the entrance chambers mentioned 36 arranged in the groups of flat tubes.
  • the upper level In addition, the own supply lines 44 to the Chambers 36.
  • the training of this area in an integral Die casting is easily possible because in the Die casting the entry chambers 36 continue to the long side of the collector 18 are open and the own supply lines 44 open on the side facing away from the flat tubes 2 are and compared to the inlet chambers 36 only by an intermediate wall 72 separating the two levels are separated, in each of which the outlet openings 60 are arranged, the dimensioning of which is the same as for the distribution pipe 54 was executed.
  • Fig. 2 to 6d is at least the division of the chamber and optionally the distribution device of the inlet-side refrigerant on the individual inlet chambers in a die-cast part integrated.
  • This can basically be done in a sheet metal shaped tube sheet 26 and cover 28 of the collector 18 as a separate Part used, the lid and the Bottom together the peripheral surface of the collector 18 entirely or predominantly form.
  • the lid and / or the tube sheet can but also an integral die-cast part his. This is described with reference to Fig. 7, in the Embodiment at least only considered in the following Lid 28 itself is made of die-cast.
  • the tube sheet can be useful for reasons of simple production in the previously described versions made of solder-coated Sheet metal, but, as mentioned, in not in the manner described in detail also an integral Be diecast.
  • the embodiment according to FIG. 9 should not be the one described with reference to FIGS. 1 to 6b Exclude possibility of dividing the chamber 30 as your own To manufacture die casting, which is also in a made on die-cast cover 28 is inserted and, if necessary also on a die-cast tube sheet 26 is placed together with the cover 28.
  • Distribution pipe 54 may be arranged, e.g. as a separate component installed in the collector and e.g. 4 on the semicircular Recesses 70 of the chamber subdivision 30 placed is.
  • cover 28, tube sheet 26, chamber division 30 and distribution pipe 54 be separate components.
  • connection parts in turn solder-coated, such as such as the supply line 14, the output line 16, the cover 28 both in sheet metal and in as Die casting and, as already mentioned, the solder-coated Sheet metal of the tube sheet.
  • a type of training of the cover 28 as a die-cast part can e.g. transferred to the variant according to FIG. 2, where the own supply lines 44 only in the area of the inlet chambers 36 are arranged and integrated in the cover if necessary could be.
  • the own supply lines 44 can, however Borderline case up to the one adjacent to the outlet chamber 34 Reach longitudinal web 32 and if necessary in Die-cast part of the cover 28 to be integrated.
  • Lead 14 and output line 16 are in the Embodiments described as in Fig. 1 on the front Collector 18 or arranged on its cover 28. Likewise can but also an arrangement of the output line in any case 16 on the long side of the collector, in particular on the collector Middle, provide.
  • FIG 7 shows an embodiment of the cover 28, where the fluid distribution to each individual Feed lines 44 to the inlet chambers 36 are preferred Is designed.
  • thermostatically controlled injection valve 86 partly in the design of the cover 28 included as a die-cast part and thus takes with his essential component outside of the evaporator no own Installation space more, as is still the case with the design Block valve 50 in Fig. 1 is the case.
  • the housing 88 of the injection valve 86 is also formed.
  • the other parts of the injector are off commercial elements formed. Special is in the neighborhood the inlet end of the collector 18 on the On the long side, a threaded hole 90 is left in the die-cast part, which is obtained in post-processing by turning out and in the under circumferential seal by an O-ring seal 92 an adjusting screw 94 can be screwed in to different degrees is.
  • This adjusting screw 94 forms with one on its inside Front trained cavity a recording space for the valve spring 96, which on its inner side of a Valve cage 98 is held on its the valve spring facing away from a spherical valve element 100 carries, which cooperates with a valve seat 102.
  • the valve element is from the valve spring 96 in Closed position of the valve opening surrounded by the valve seat 104 biased and controls the connection cross section between the feed line 14 and a mixing space 106, which the Inlets have their own feed lines 44 to the inlet chambers 36 is upstream.
  • a collision function is through the Throttle function on the injector also taken over.
  • Axial of the threaded bore 90 is in the Die-cast part has a further threaded bore 110 for receiving the Recessed thermal head 112, which with the outlet chamber 34th communicated.
  • the thermal head is graded Valve pin 114 with the spherical valve element 100 connected, the valve pin playing against the inner one Has opening of threaded bore 110 so that the flow connection between the outlet chamber 34 and the thermal head remains guaranteed.
  • the injector becomes more or less opened so that an adjustment to a constant, determined by the screw depth of the adjusting screw 94 Temperature.
  • the supply line 14 and the output line 16 have a common connecting flange 116, which by means of fastening screws 118 in bag-shaped threaded holes 120 engages on the outside of the die casting.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP98924278A 1997-05-07 1998-05-05 Sammler eines wärmetauschers für kraftfahrzeuge mit kammerunterteilung aus sich kreuzenden flachstegen Expired - Lifetime EP0929783B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19719254 1997-05-07
DE19719254A DE19719254B4 (de) 1997-05-07 1997-05-07 Sammler eines Wärmetauschers für Kraftfahrzeuge mit Kammerunterteilung aus sich kreuzenden Flachstegen
PCT/EP1998/002635 WO1998050747A1 (de) 1997-05-07 1998-05-05 Sammler eines wärmetauschers für kraftfahrzeuge mit kammerunterteilung aus sich kreuzenden flachstegen

Publications (2)

Publication Number Publication Date
EP0929783A1 EP0929783A1 (de) 1999-07-21
EP0929783B1 true EP0929783B1 (de) 2002-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98924278A Expired - Lifetime EP0929783B1 (de) 1997-05-07 1998-05-05 Sammler eines wärmetauschers für kraftfahrzeuge mit kammerunterteilung aus sich kreuzenden flachstegen

Country Status (6)

Country Link
US (1) US6082448A (zh)
EP (1) EP0929783B1 (zh)
CN (1) CN1225718A (zh)
BR (1) BR9804888A (zh)
DE (1) DE19719254B4 (zh)
WO (1) WO1998050747A1 (zh)

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JPH08327285A (ja) * 1995-05-30 1996-12-13 Sanden Corp 多管式熱交換器
JP3159893B2 (ja) * 1995-07-10 2001-04-23 京浜産業株式会社 ろう付用アルミニウム合金鋳物材およびそのろう付方法

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DE19719254B4 (de) 2005-08-18
BR9804888A (pt) 1999-08-31
US6082448A (en) 2000-07-04
CN1225718A (zh) 1999-08-11
EP0929783A1 (de) 1999-07-21
WO1998050747A1 (de) 1998-11-12
DE19719254A1 (de) 1998-11-12

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