EP0910780A1 - Collecteur d'un echangeur de chaleur pour vehicules a moteur avec un boitier en au moins deux parties - Google Patents

Collecteur d'un echangeur de chaleur pour vehicules a moteur avec un boitier en au moins deux parties

Info

Publication number
EP0910780A1
EP0910780A1 EP98925531A EP98925531A EP0910780A1 EP 0910780 A1 EP0910780 A1 EP 0910780A1 EP 98925531 A EP98925531 A EP 98925531A EP 98925531 A EP98925531 A EP 98925531A EP 0910780 A1 EP0910780 A1 EP 0910780A1
Authority
EP
European Patent Office
Prior art keywords
collector
collector according
die
cover
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98925531A
Other languages
German (de)
English (en)
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
Application filed by Valeo Klimatechnik GmbH and Co KG filed Critical Valeo Klimatechnik GmbH and Co KG
Publication of EP0910780A1 publication Critical patent/EP0910780A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Definitions

  • Heat exchanger collector for motor vehicles with at least two-part housing structure
  • the invention relates to a collector of a heat exchanger according to the preamble of claim 1.
  • collector should generally not only be understood to mean an intermediate collector or collector on the outlet side, but also an distributor on the inlet side.
  • a lid, a tube sheet or a compartment division has generally been made from sheet metal or plate-shaped material, with the lid being deep-drawn, for example, from sheet metal.
  • Injection molded parts have also been used for special constructions.
  • a sandwich construction made of injection-molded plates was used for an evaporator, which is also to be used in particular for automotive air conditioning systems, in which the chambers required for the distributor were obtained by appropriate groove designs.
  • die-casting is used in the description of the invention instead of the term injection molding, although within the scope of the invention the terms die-casting and injection molding are considered synonymous.
  • the invention has for its object to make the possibilities of die casting for collectors in heat exchangers for motor vehicles even more useful than was previously considered.
  • the use of special sealants in the outer jacket of the collector formed by the cover and the tube sheet is thus made unnecessary by selecting a solderable, in particular brazable, material as aluminum or aluminum alloy for the die-casting production of the cover and / or tube sheet of the collector and This enables direct soldering of these parts, as was previously only possible with molded sheet metal parts as a cover or tube sheet. This minimizes the construction effort and ensures permanent tightness. It is particularly preferred to use the alloy newly developed for production as a die-cast part for the collector according to claim 19. These problems do not arise to the same extent from the start with insert parts of the collector; because such insert parts are surrounded by the outwardly tight jacket on the cover and tube sheet.
  • Die-casting production is not limited to a plate construction, but can also be used for the production of tub-like bodies with a bottom and surrounding side wall. Such a circumferential side wall is not available from the outset in the known plate construction.
  • Die-casting technology also makes it possible to manufacture filigree flat mesh, which up to now have been produced in a complicated assembly construction from cut sheet metal strips (cf. DE 195 15 526 Cl, Fig. 11).
  • the invention focuses on one of the above three aspects and includes the remaining two further aspects as further developments of the invention.
  • the invention provides die-cast parts which correspond in many aspects to the shape of the preformed sheet metal parts.
  • the invention also contemplates combining die cast parts with sheet metal parts.
  • shaped sheet metal parts have usually been soldered using braze.
  • This conventional type of connection by soldering, in particular by brazing, is adopted in the context of the invention with the full or partial inclusion of die-cast parts by using a solderable alloy as the material for the die-cast part in question.
  • the pins according to claim 5 (with the further developments of claims 6 to 13) have the advantage, inter alia, of being able to carry out a mechanically coherent pre-assembly of the cover and tube plate of the collector before soldering the collector so that the soldering gaps remain minimal and accordingly, the security against leaks when soldering is maximum.
  • thermostatically controlled injection valves which include a thermostatic control device in their block, the temperature sensor of which is arranged in the refrigerant outlet. Accordingly, the block has on one side two connections to the inlet and return of the evaporator and on the other side, which is usually opposite, connections to the condenser and compressor.
  • the invention is further developed to include a thermostatic injection valve at least spatially and preferably also with partial integration into the die-cast part.
  • a thermostatic injection valve at least spatially and preferably also with partial integration into the die-cast part.
  • the type in which the housing of the injection valve, even if it has the type of a block valve, is prefabricated entirely in the die-cast part is particularly suitable.
  • Commercially available components can be used for internal organs such as the valve seat, valve pin and thermal sensor. In particular, integration into the lid is recommended.
  • Figure 1 is an external perspective view of a four-pipe flat tube heat exchanger designed as an evaporator.
  • FIG. 2 shows a possible cross-sectional design of the flat tube heat exchanger according to FIG. 1 with a first variant of the design of the collector;
  • FIG. 3 shows a cross section corresponding to FIG. 2, but with a second variant of the design of the collector
  • Fig. 4 shows a possible die-cast partitioning of the collector of FIG. 3, between whose tube sheet and its lid can be used;
  • FIG. 5 shows a plan view of the tube plate of a collector according to FIG. 3 with the cover removed but with the compartment subdivision attached according to FIG. 4;
  • 6a to 6d detail cross-sections of four variants each of a connection point of the compartment subdivision according to FIG. 4 with the tube sheet or the cover of the evaporator according to FIG. 3;
  • Fig. 7 shows a section along a die-cast cover of an inlet-side collector.
  • the flat tube heat exchanger shown in the figures is of four-pipe design in all the exemplary embodiments shown and is designed as an evaporator of a refrigerant circuit.
  • the flat tube heat exchanger has the following general structure:
  • a larger number of typically twenty to thirty flat tubes 2 are arranged with constant mutual distances and mutually aligned end faces 4.
  • a zigzag lamella 8 is sandwiched between the flat sides 6 of the flat tubes.
  • a zigzag fin 8 is also arranged on the two outer surfaces 4 of the outer flat tubes.
  • Each flat tube has inner stiffening webs 10 which divide chambers 12 acting as continuous channels in the flat tube. Depending on the overall depth, a number of chambers 12 of ten to thirty is typical.
  • the block arrangement of the flat tubes 2 and the zigzag fins 8 is flowed through by outside air in the direction of the arrow shown in FIG. 1 in the depth direction as the external heat exchange medium in the finished state.
  • the internal heat exchange medium in the evaporator is a refrigerant such as, in particular, fluorocarbon, which enters the heat exchanger via a feed line 14 and exits the heat exchanger via an outlet line 16.
  • the supply line comes from the condenser in the refrigerant circuit.
  • the output line 16 leads to the compressor of the refrigerant circuit.
  • the refrigerant on the inlet side is distributed from the feed line 14 to the individual flat tubes by a so-called distributor.
  • the refrigerant is fed collectively to the output line 16. If the distribution and the collection can also be assigned to separate boxes, both functions are combined in a common collector 18 in all exemplary embodiments.
  • This collector 18 is then arranged on one end face 4 of the flat tubes 2, while on the other end face 4 of the flat tubes 2 there is only a reversal of the flow between the floods, here, for example, by means of the individual cups 20 depicted in FIG. 1 or according to the depiction in FIG 2 integrating the deflection functions of such individual bowls in a common deflection collector 22.
  • the individual bowls 20 according to FIG. 1 can, if necessary, be integrated into a structural unit by connecting parts (not shown).
  • cups 20 or the deflection collector 22 would be replaced by an output collector (not shown).
  • the multiple flow means at least one flow reversal in the area of the individual channels formed by the chambers 12 in each flat tube 2.
  • the bowl 20 or the deflection collector 22 does not need any further intermediate chamber subdivision, but only the one-time deflection function must be guaranteed.
  • at least the intermediate wall 24 shown in the case of the four-flow arrangement in FIG. 2 is required, so that in this case of the four-flow arrangement, a double simple deflection takes place in the respective bowl 20 or in the respective deflection collector 22. If the number of floods is even higher, the number of partitions 24 may then have to be increased.
  • the collector 18 is basically composed of a tube sheet 26 and a cover 28, it being possible, if necessary, to provide further parts for the construction of the collector 18, which are at least partially specified below.
  • the collector 18 Since the input function and the output function of the refrigerant are combined in the collector 18, the collector 18 requires at least a two-chamber design which separates an input side from the output side.
  • the chamber subdivision, generally designated 30, has at least one flat web in the form of a longitudinal web 32, which separates the input area in the collector 18 which communicates with the feed line 14 from an outlet chamber 34 which runs along the collector 18 and which communicates with the output line 16.
  • the inlet-side refrigerant In the evaporator, it is also necessary for the inlet-side refrigerant to be fed as uniformly as possible to all the flat tubes 2. In the limit case, the supplied refrigerant can be fed separately to each individual flat tube 2 via a so-called distributor. Usually, however, the Guided tour to neighboring groups of flat tubes in which at least some groups have a higher number of flat tubes than one, whereby the number of flat tubes per group can also change. In the exemplary embodiment according to FIG. 5, an equal number of two flat tubes per group is provided with a total of ten flat tubes. An inlet chamber 36 is assigned to each group of flat tubes, which communicates directly with the relevant group of flat tubes. The inlet chambers 36 are separated from one another in the chamber subdivision 30 by transverse webs 38 designed as flat webs.
  • the transverse webs 38 only extend from one side of the longitudinal web 32 at right angles.
  • a further longitudinal web 40 parallel to this is provided in addition to the longitudinal web 32 which adjoins the outlet chamber 34. This is crossed by the transverse webs dividing the inlet chambers 36 at right angles to the longitudinal web 32.
  • an inner deflection chamber 42 adjoining the respective outer inlet chamber 36 for diverting the second flood into the third flood within the collector 18 is divided between these longitudinal webs.
  • the number of longitudinal webs with the function of the longitudinal web 40 increases as well as the number of inner deflection chambers 42, which then also lie side by side between the inside in the transverse direction of the collector Entry chambers 36 and the exit chamber 34 are nested.
  • the feed line 14 communicates with the individual inlet chambers 36 in each case via its own feed line 44 running in the collector 18, which is designed differently in the exemplary embodiments.
  • the block of flat tubes 2 and zigzag fins 8 is laterally closed off by a side plate 46 which bears against the outer zigzag plate, so that the side plates 46 form an outer frame for the outside air flowing into the heat exchanger block.
  • the flat tubes 2, the zigzag fins 8, the tube sheet 26 and the cover 28 of the collector together with the optionally provided chamber division 10 and the side plates 46 of the heat exchanger are expediently made of aluminum and / or an aluminum alloy and the same as the feed line 14 and the outlet line 16 are brazed including the sections of the line connections to the finished evaporator adjacent to the heat exchanger.
  • the tube sheet 26 and the cover 28 are formed from sheet metal pre-coated with solder.
  • the free edge of the cover engages in the tube sheet 26 with at least one-sided overlap - a two-sided overlap 52 is shown in FIG. 3.
  • the own feed lines 44 of the inlet chambers 36 are integrated in a distribution pipe 54, which has a pipe jacket 56 and an inner star-shaped subdivision 58, the free segments of which form the own feed lines 44.
  • the star-shaped subdivision 58 runs in a helical or helical shape.
  • Each of its own supply lines 44 communicates with the associated inlet chamber 36 via an outlet opening 60 arranged in the tubular jacket 56 of the distribution pipe 54. and evaporation pressure is substantially reduced.
  • FIG. 3 shows an alignment of the outlet opening on the wall of the inlet chamber 36; the corresponding angle can be selected as required, without a direct alignment to the chambers 12 of the flat tubes 2 being excluded.
  • the chamber subdivision 30 consists of the two longitudinal webs 32 and 40 and the cross webs 38 crossing them on an integral die-cast or injection-molded part, the terms die-cast and injection-molding being synonymous within the scope of the invention be understood.
  • intersecting flat webs of the chamber subdivision 30 should also be understood to mean the borderline case of only one-sided crossing in the sense of the only one-sided right-angled connection of the transverse webs 38 to the longitudinal web 32, which in the case of a double-flow heat exchanger makes up the entire chamber subdivision 30.
  • connection points of the longitudinal webs 32 and 40 with the flat webs 38 are each provided with a columnar reinforcement 62 which tapers conically outwards on both opposite sides of the chamber subdivision 30 Pass over pins 64 which are aligned on both sides of the chamber subdivision with one another and with the columnar reinforcements 62.
  • These pins 64 are integral with the die casting Chamber subdivision 30 is also formed and serves to connect both to the tube sheet 26 and to the cover 28, a type of connection being illustrated in FIG. 3, namely that of FIG. 6c, which will be described below.
  • FIG. 5 shows a variant of the embodiment according to FIG. 4, where, in addition to the pins 64 on both sides, between these pins 66, which are additional on both sides, are formed in a uniform grid-shaped interposition between the pins 64, which may also consist of columnar reinforcements 62 the flat webs can emerge, which are then not formed at intersections of the flat webs.
  • the grid of the pins 64 and 66 is selected so that it is nested in the grid of the connection points of the flat tubes 2, so that it does not mechanically lead to an unfavorable interaction of the pin connections of the chamber partition 30 the tube sheet on the one hand and the flat tubes 2 with the tube sheet on the other.
  • An eccentric nesting is shown, but it can also be provided in the center.
  • 6a to 6d show four preferred types of connection of the pins with the sheet metal of the tube sheet 26 and / or the cover 28 without intending to provide a final list.
  • the sheet only needs to be stamped like a cup, in which case the pin 64 or 66 in question engages with the conical end thereof and is brazed there.
  • This connection method would take over the type of connection of the flat webs, in particular the longitudinal webs 32 and 40, the chamber subdivision 30 with the cover 28 and / or the tube plate 26.
  • the pin 32 and 40 with the tube sheet and cover according to FIGS. 6b to 6d are used, in each of which a pin penetration takes place through the sheet metal of the tube sheet or cover.
  • Fig. 6b shows a simple implementation, which in turn is brazed.
  • the pin carried out is upset on the outside according to FIG. 1, so that it forms an external, form-fitting undercutting lock.
  • the spigot which is of equal thickness in the other embodiments, with the exception of the conical bevel, is additionally thickened in a column-shaped manner so that an undercut occurs on the inside of the header 18, which in connection with the upsetting in the sense 6c causes a complete encompassing of the sheet metal from the tube sheet and cover.
  • the cup-like shape of FIG. 6a is also adopted in the embodiments according to FIGS. 6b to 6d, but there is also a through hole in this cup-shaped shape. This increases the dimensional stability of the sheet metal structure.
  • the transverse webs 38 are each provided with an approximately semicircular recess 70 in which the distribution tube 54 according to FIG. 3 is inserted. If it is made of hard-solderable aluminum or a corresponding aluminum alloy, then the distribution pipe can be soldered in the manner described with the entire heat exchanger.
  • FIG. 2 corresponds to the embodiment according to FIGS. 3 and 4 with the exception that the distribution pipe 54 and the recesses 70 matched to it are dispensed with. Instead, the own supply lines 44 to the individual inlet chambers 36 are additionally formed integrally in addition to the pressure casting of the chamber subdivision 30 in this pressure casting.
  • the collector 18 has seen two Ni in the direction of extension of the flat tubes. veaus.
  • all of the inlet chambers 36 mentioned are arranged in the groups of flat tubes.
  • In the upper level there are additional feed lines 44 to the chambers 36.
  • the formation of this area in an integral die-cast piece is easily possible because in the die-cast piece the inlet chambers 36 are still open to the long side of the collector 18 and the own feed lines 44 on the are open to the side facing away from the flat tubes 2 and are separated from the inlet chambers 36 only by an intermediate wall 72 separating the two levels, in each of which the outlet openings 60 are arranged, the dimensioning of which is the same as stated with regard to the distributor tube 54.
  • At least the chamber subdivision and optionally the distribution device of the inlet-side refrigerant to the individual inlet chambers are integrated in a die-cast part.
  • this can be used as a separate part in a tube sheet 26 and cover 28 of the collector 18 formed from sheet metal, the cover and the base together forming the peripheral surface of the collector 18 entirely or predominantly.
  • the cover and / or the tube sheet can each be an integral die-cast part. This is described with reference to FIG. 7, in the embodiment of which at least the cover 28, which is only considered below, is itself made of die-cast.
  • the tube sheet can be expediently formed from solder-coated sheet metal, as in the previously described designs, but, as mentioned, also in a manner that is not described in detail, also in an integrated manner. be a gritty die-cast.
  • the embodiment according to FIG. 9 is not intended to exclude the possibility described with reference to FIGS. 1 to 6b to manufacture the chamber subdivision 30 as a separate die-cast piece, which is inserted into a lid 28, which is also made on the die-cast part, and optionally also on a die-cast part manufactured tube sheet 26 is placed together with the cover 28.
  • the own supply lines 44 can also be arranged in a separate distribution pipe 54 according to FIG. installed as a separate component in the collector and e.g. 4 is placed on the semicircular recesses 70 of the chamber partition 30.
  • the cover 28, tube sheet 26, chamber subdivision 30 and distribution tube 54 can be separate components.
  • connection parts for their part solder-coated such as the feed line 14, the outlet line 16, the cover 28 both in sheet metal execution also in a die-cast version and, as already mentioned, the solder-coated sheet metal of the tube sheet.
  • a type of design of the cover 28 as a die-cast part can be transferred, for example, to the variant according to FIG. 2, where the own feed lines 44 are arranged only in the area of the inlet chambers 36 and can be integrated in the cover if necessary. In the borderline case, however, the own supply lines 44 can extend as far as those adjacent to the outlet chamber 34 Reach longitudinal web 32 and, if necessary, be integrated in the die-cast part of the cover 28.
  • supply line 14 and output line 16 are arranged on the end face of the collector 18 or on its cover 28, as in FIG. 1.
  • an arrangement of the output line 16 on the long side of the collector, in particular at the center thereof, can also be provided.
  • FIG. 7 shows an embodiment of the cover 28, in which the distribution of fluid to the individual feed lines 44 to the inlet chambers 36 is designed in a preferred manner.
  • a thermostatically controlled injection valve 86 is partly included in the design of the cover 28 as a die-cast part and thus, with its essential component outside of the evaporator, no longer takes up its own installation space, as is still the case with the design as a block valve 50 in FIG. 1 .
  • the housing 88 of the injection valve 86 is also formed from the die-cast part of the cover 28.
  • a threaded bore 90 is recessed, which is obtained in post-processing by unscrewing and into which an adjusting screw 94 can be screwed in to different degrees under circumferential sealing by means of an O-ring seal 92.
  • This adjusting screw 94 forms, with a cavity formed on its inner end face, a receiving space for the valve spring 96, which is held on its inner side by a valve cage 98, which carries a spherical valve element 100 on its end face facing away from the valve spring, which cooperates with a valve seat 102 .
  • valve element is biased by the valve spring 96 in the closed position of the valve opening 104 surrounded by the valve seat and controls the connection cross section between see the feed line 14 and a mixing space 106, which is arranged upstream of the inlet openings own feed lines 44 to the inlet chambers 36.
  • a guide extension 108 is also formed in the die-cast part, which protrudes obliquely into the mixing space 106 and has a distribution function on the individual feed lines 44. An impact function is performed by the throttle function on the injection valve.
  • a further threaded bore 110 for receiving the thermal head 112, which communicates with the outlet chamber 34, is recessed in the die-cast part.
  • the thermal head is connected to the spherical valve element 100 via a stepped valve pin 114, the valve pin having play in relation to the inner opening of the threaded bore 110, so that the flow connection between the outlet chamber 34 and the thermal head remains guaranteed.
  • the injection valve is opened more or less, so that an adjustment to a constant temperature determined by the screwing depth of the adjusting screw 94 is established.
  • the supply line 14 and the output line 16 have a common connecting flange 116 which engages in bag-shaped threaded bores 120 on the outside of the die-casting by means of fastening screws 118.

Landscapes

  • 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)

Abstract

Ce collecteur (18) d'un échangeur de chaleur pour véhicules à moteur est constitué d'au moins deux parties, dont un fond à tubes (26) et un couvercle (28) qui forment ensemble le boîtier du collecteur (18), le cas échéant avec au moins un autre élément constitutif. Selon l'invention, le couvercle (28) et/ou le fond à tubes (26) forment chacun une seule pièce moulée sous pression en un matériau soudable, solidaire de la paroi du boîtier qui les entoure.
EP98925531A 1997-05-07 1998-05-05 Collecteur d'un echangeur de chaleur pour vehicules a moteur avec un boitier en au moins deux parties Withdrawn EP0910780A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19719255 1997-05-07
DE1997119255 DE19719255A1 (de) 1997-05-07 1997-05-07 Sammler eines Wärmetauschers für Kraftfahrzeuge mit mindestens zweiteiligem Gehäuseaufbau
PCT/EP1998/002636 WO1998050748A1 (fr) 1997-05-07 1998-05-05 Collecteur d'un echangeur de chaleur pour vehicules a moteur avec un boitier en au moins deux parties

Publications (1)

Publication Number Publication Date
EP0910780A1 true EP0910780A1 (fr) 1999-04-28

Family

ID=7828863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98925531A Withdrawn EP0910780A1 (fr) 1997-05-07 1998-05-05 Collecteur d'un echangeur de chaleur pour vehicules a moteur avec un boitier en au moins deux parties

Country Status (5)

Country Link
EP (1) EP0910780A1 (fr)
CN (1) CN1225717A (fr)
BR (1) BR9804889A (fr)
DE (1) DE19719255A1 (fr)
WO (1) WO1998050748A1 (fr)

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DE10146258A1 (de) * 2001-09-20 2003-04-17 Behr Gmbh & Co Wärmetauscher und gehäuseartige Halterung für den Wärmetauscher
DE10149507A1 (de) 2001-10-06 2003-04-10 Behr Gmbh & Co Wärmetauscher, insbesondere Flachrohr-Wärmetauscher eines Kraftfahrzeugs
EP1654511A4 (fr) 2003-08-01 2012-05-30 Showa Denko Kk Echangeur thermique
DE102004003789A1 (de) 2004-01-23 2005-08-18 Behr Gmbh & Co. Kg Wärmetauscher
DE102004019769A1 (de) 2004-04-23 2005-11-17 Bayerische Motoren Werke Ag Wärmetauscher für ein Kraftfahrzeug sowie Verfahren zu dessen Herstellung
US7275394B2 (en) * 2005-04-22 2007-10-02 Visteon Global Technologies, Inc. Heat exchanger having a distributer plate
DE102008029958A1 (de) * 2008-06-26 2009-12-31 Behr Gmbh & Co. Kg Wärmetauscher für ein Kraftfahrzeug
DE102008047076A1 (de) * 2008-09-12 2010-03-18 Behr Gmbh & Co. Kg Fügebauteil und Wärmetauscher

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DE2161279A1 (de) * 1971-10-01 1973-04-05 Giuseppe Baggioli Kuehler fuer kraftfahrzeuge
ES403094A1 (es) * 1972-03-17 1975-04-16 Tecalemit Sa Perfeccionamientos en radiadores de caudal regulable.
DE3132078A1 (de) * 1980-08-21 1982-03-25 IMI Radiators Ltd., Baildon West Yorkshire Waermeaustauscher
DE3136374C2 (de) 1981-09-14 1985-05-09 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Kältemittelverdampfer, insbesondere für Klimaanlagen in Kraftfahrzeugen
DE3150187C2 (de) 1981-12-18 1986-04-03 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Verdampfer, insbesondere für Klimaanlagen in Kraftfahrzeugen
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DE4305060C2 (de) * 1993-02-19 2002-01-17 Behr Gmbh & Co Gelöteter Wärmetauscher, insbesondere Verdampfer
DE4400481A1 (de) * 1994-01-11 1995-07-13 Gerhard Christian Di Rambacher Heizkessel
DE19515526C1 (de) * 1995-04-27 1996-05-23 Thermal Werke Beteiligungen Gm Flachrohrwärmetauscher mit mindestens zwei Fluten für Kraftfahrzeuge

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Also Published As

Publication number Publication date
BR9804889A (pt) 1999-08-31
WO1998050748A1 (fr) 1998-11-12
CN1225717A (zh) 1999-08-11
DE19719255A1 (de) 1998-11-12

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