EP1435503B1 - Heat exchanger and heat exchanger assembly for vehicles - Google Patents
Heat exchanger and heat exchanger assembly for vehicles Download PDFInfo
- Publication number
- EP1435503B1 EP1435503B1 EP04008664A EP04008664A EP1435503B1 EP 1435503 B1 EP1435503 B1 EP 1435503B1 EP 04008664 A EP04008664 A EP 04008664A EP 04008664 A EP04008664 A EP 04008664A EP 1435503 B1 EP1435503 B1 EP 1435503B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- tube
- flow
- wall sections
- tube ends
- 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
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Classifications
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- 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
- F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
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- 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
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
- F28D1/0435—Combination of units extending one behind the other
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- 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
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
- F28F9/0221—Header boxes or end plates formed by stacked elements
-
- 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
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
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- 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
- F28D2021/0082—Charged air coolers
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- 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
- F28D2021/0084—Condensers
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- 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
- F28D2021/0091—Radiators
- F28D2021/0094—Radiators for recooling the engine coolant
-
- 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
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
- F28F2009/004—Common frame elements for multiple cores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/16—Fastening; Joining with toothed elements, e.g. with serrations
Definitions
- the invention relates to a heat exchanger for a motor vehicle with a rib / tube block, the flat tubes are provided on opposite sides with such expanded tube ends that abutting, adjacent wall sections of the tube ends lie flat against each other and the tube ends are aligned in a row, wherein the tube ends on both sides in each case a flow box is flush mounted with corresponding longitudinal wall sections of the pipe ends, and a heat exchanger assembly for a motor vehicle with at least two in the flow direction successively arranged heat exchangers.
- a heat exchanger which has a rib / tube block with flat tubes whose tube ends are widened to rectangular cross sections.
- the tube ends are flared so that they lie flat against each other with their transverse to the longitudinal direction of attached flow boxes Wandungsabschnitten, and that the respective lateral, longitudinal wall sections of the pipe ends are aligned and flush with the corresponding wall portions complete the attached flow boxes.
- the flow boxes serve as collection or distribution boxes.
- the non-prepublished patent application also discloses a heat exchanger arrangement with two heat exchangers, one of which is designed as a vehicle radiator and the other as a capacitor. These two heat exchangers are arranged directly behind one another in the throughflow direction of the air and are connected to one another by corresponding connecting means in the region of the respective flow boxes.
- the object of the invention is to provide a heat exchanger and a heat exchanger arrangement of the type mentioned, which enable a reliable production and a simple and space-saving design.
- this object is achieved in that densely mated sections of individual components of the heat exchanger are solder plated for a common soldering and the corners of the expanded pipe ends are provided with radii between 0 and 2 mm, so that between adjacent pipe ends and side walls of the respective flow box remain tightly filled by flowing solder joints.
- inventively sized radii remain between adjacent pipe ends and side walls of the flow boxes only very narrow joints that are completely and tightly filled in the soldering oven by flowing solder.
- the adjacent, transverse wall sections of the pipe ends abut each other in a form-fitting manner. This makes it possible to achieve an exact alignment and fixation of the pipe ends to each other during the pre-assembly of the heat exchanger, ie before the soldering of the individual components. Tolerances due to a lateral offset of individual pipe ends can be avoided.
- the positive engagement of the wall sections together also results in an enlarged contact surface, which has an increased security of the solder joint result.
- the flow boxes facing, lijnsverêtnden Wanduhgsabitese the pipe ends are positively against corresponding wall portions of the flow boxes.
- the pre-assembly of the heat exchanger is further improved, since the flow boxes - relative to their longitudinal direction - are positioned exactly positioned on the pipe ends and can be kept fixed in the longitudinal direction by the positive engagement.
- the positive-locking system ensures an enlarged contact surface area, which further improves the tightness and safety of the subsequent solder joint between the flow boxes and the pipe ends.
- the corners of the flared pipe ends are provided with radii between 0 and 2 mm.
- the widened tube ends preferably have a rectangular shape, which according to the embodiments described above may additionally be provided with correspondingly deformed wall sections.
- the preferred radii ensure that only extremely narrow gaps remain between the adjacent pipe ends even in the region of the outer sides, which can be completely filled by the solder during the soldering operation, so that the dense solder joint is ensured with one another and in particular with the lateral wall regions of the flow boxes.
- the pipe ends are each expanded asymmetrically to the central longitudinal planes of the associated flat tubes. This makes it possible to realize special arrangements of the components of the heat exchanger, without affecting the safe operation of the heat exchanger.
- each tube end corresponds to the circumference of the associated flat tube plus or minus 30%.
- the negative relation between the circumference of each flat tube and the circumference of the associated, flared tube end results in particular by a partially double-walled folding of the wall of the tube ends.
- the adjacent pipe ends facing transverse wall sections have a height between 0.3 and 2 times a pitch the flat tubes, namely 0.3T ⁇ H 1 ⁇ 2T on. This preferred dimensioning allows a secure tight connection between the pipe ends and sufficient stability of the entire fins / tube block.
- the flat tubes are aligned obliquely relative to the axis of symmetry of the expanded tube ends.
- a special arrangement of the heat exchanger in a motor vehicle is also possible with this design, wherein, in particular, an oblique arrangement of the heat exchanger within an engine compartment of the motor vehicle - relative to the normal direction of travel of the motor vehicle - is advantageous.
- the object of the invention is achieved in that the at least two heat exchangers on opposite sides in each case a common side part is assigned.
- a common side part is assigned to the common side parts.
- the flow boxes are designed to be open by at least one heat exchanger in their side areas, and the opposite side parts are each provided with at least one corresponding end portion which protrude into the respective side regions of the flow boxes and seal them tight. This makes it possible to make the flow boxes simple, as they can be thermoformed as a simple U-profiles.
- the at least two heat exchangers have in common, over the total depth of the ribs / tube block extending ribs.
- the flow boxes of the at least two heat exchangers are provided with connecting pieces, which are aligned parallel to each other and curved in the same direction.
- connecting pieces which are aligned parallel to each other and curved in the same direction.
- insulating gaps are arranged between the tubes and / or the flow boxes. These insulation gaps serve for the thermal insulation of the adjacent heat exchangers against each other, wherein the insulation gaps preferably separate the tubes from each other over their entire length up to the respective flow boxes. However, this embodiment also detects insulation gaps, which are provided only in sections between the adjacent pipes and / or flow boxes. The insulation gaps have preferred widths between 1 and 10 mm.
- a heat exchanger assembly 1 for a motor vehicle has a first heat exchanger in the form of a water / air cooler, a second heat exchanger in the form of a charge air cooler and a third heat exchanger in the form of a capacitor.
- the three heat exchangers are arranged parallel to each other transversely to the vehicle longitudinal direction in an engine compartment of the motor vehicle, so that they are arranged one behind the other in the direction of flow of the airstream in the normal direction of travel of the motor vehicle.
- the water / air cooler has an in Fig.
- the condenser is positioned, which has an upper flow box 13 and a lower flow box 14 and a between these flow boxes 13, 14 extending and unspecified ribs / tube block.
- Each flow box 13, 14 is formed by two half-shells assembled to form a round hollow-chamber profile, one half-shell each representing a bottom of the respective flow box 13, 14 and provided with indentations for tight connection to tube ends of the flat tubes.
- the side flow boxes 13, 14 are each sealed by a lid insert.
- Both the ribs / tube block of the intercooler and the fins / tube block of the water / air cooler are composed of a plurality of mutually parallel flat tubes and between 'these arranged corrugated fins.
- the opposite pipe ends of the flat tubes are each widened rechtkkig, so that the pipe ends according to Fig. 1 in each case in a row with their viewed in the longitudinal direction of the flow boxes transverse wall sections lying flat and close to each other.
- the longitudinal wall sections of the flared pipe ends each extend in alignment with each other.
- At these longitudinal wall portions of the tube ends, which respectively form the outer sides of the rib / tube block, are corresponding, longitudinal Wall areas of the flow boxes flat and flush at the end.
- the expanded tube ends thus directly form the "bottoms" of the flow boxes, so that the additional provision of soils in the region of the flow boxes is avoided.
- the described construction of the heat exchanger corresponds to the design of the pipe ends and the placement of the flow boxes, as in the not previously published DE 195 43 986.4 is described.
- the flow boxes of both the intercooler and the water / air cooler are each designed to be open at their opposite side areas.
- the lateral conclusion of these side areas of the flow boxes each take a final section 15, 16, 18, 19 of a side part 11, 12, which extends integrally over the entire depth of the heat exchanger assembly and thus over all three heat exchanger.
- the two side parts 11, 12 limit the ribs / tube blocks of the water / air cooler, the intercooler and the condenser on opposite sides.
- the end portions 15, 16, 18, 19 of each side part 11, 12 protrude in extension of the side parts in each case in the side regions of the flow boxes inside, the outer contours of the end portions 15, 16, 18, 19 respectively adapted to the inner contours of the side regions of the flow boxes are, so that there is a circumferentially sealed system of the end portions 15, 16, 18, 19 at the corresponding inner walls of the flow boxes.
- the two side parts 11, 12 are used for mounting the heat exchanger assembly from opposite sides of the ribs / tube blocks and at the same time with their end sections 15, 16, 18, 19 axially - relative to the longitudinal direction of the flow boxes - used in the flow boxes.
- a tensioning device such as straps or the like
- the entire heat exchanger assembly including the side parts 11, 12 in the transverse direction of the ribs / tube blocks is loaded under pressure and then soldered tight in a common soldering process.
- the prerequisite for this is, of course, that all components of the heat exchanger assembly 1 made of sheet metal, preferably an aluminum alloy, are made. At least the respective sections of the individual components of the heat exchanger arrangement which are to be joined together are solder-plated accordingly.
- holding claws are respectively provided at the opposite end edges of the flow boxes, according to the embodiment Fig. 7 are provided with the reference numeral 26. These are bent inwardly after the axial insertion of the end portions of the side parts 11, 12, wherein they engage in corresponding recesses of the contact webs of the end portions 15, 16, 18, 19. Even without the described tensioning device, a fixation of the flow boxes of the charge air cooler and of the water / air cooler relative to the associated ribs / pipe blocks and relative to the side parts 11, 12 is thus already achieved via the side parts 11, 12.
- Fig. 5 results from the direct placement of the flow boxes on the flared pipe ends on the one hand and the provision of common, each one-piece side parts 11, 12 on the other hand an extremely slender, compact construction of the heat exchanger assembly, wherein between the individual flat tubes 21, 22, 24 of the capacitor , the intercooler and the water / air cooler and thus remain between the respective ribs / pipe blocks only extremely small distances. Since the charge air cooler and the water / air cooler are separated from one another in the region of the flow boxes, good thermal insulation results between the adjacent flow boxes in these areas.
- the flat tubes 21 of the capacitor protrude through a bottom 20 of the associated flow box 13 and are fixed by means of this bottom 20 in the flow box 13.
- Another heat exchanger assembly according to the Fig. 6 to 8 has only two successively arranged heat exchanger, of which one is designed as a water / air cooler and the other as a capacitor.
- the water / air cooler corresponds in its construction to the previously based on the Fig. 1 to 5 described in detail water / air cooler of the heat exchanger assembly 1, so that no further explanation is necessary for this purpose.
- the water / air cooler and the condenser are also associated on opposite sides of two common side parts 12a, which are basically designed according to the side parts 11 and 12, but designed for only two heat exchangers.
- Each side part 12a has only one end portion 16a for the respective side region of the water box of the water / air cooler, which analogous to the 'embodiment according to the Fig. 1 to 5 fixed with the help of retaining claws 26 in the side areas and then sealed with the water boxes, soldered.
- the compact design of the heat exchanger assembly and the analog design to the heat exchanger assembly to Fig. 1 to 5 is the rest of the drawings Fig. 6 to 8 removable, wherein the same reference numerals were used for the same components, only with the addition of the letter a.
- Fig. 9 is a heat exchanger arrangement similar to the Fig. 6 to 8 shown in sections, which preferably also composed of a water / air cooler and a capacitor.
- this heat exchanger assembly has a common ribs / tube block, in which the flat tubes 21b of the capacitor on the one hand and the flat tubes 24b of the water / air cooler on the other hand are separated from each other, but the common and over the entire depth of the heat exchanger assembly continuous corrugated 27th having.
- the corrugated fins 27 thus have the same width as the side parts 12b which likewise extend over the entire heat exchanger arrangement.
- the heat exchanger assembly according to Fig. 10 is analogous to the heat exchanger arrangement according to Fig. 9 also provided with a common ribs / tube block, wherein corrugated fins 28 extend over the entire depth of the heat exchanger assembly.
- three heat exchangers preferably in the form of a water / air cooler, an intercooler and a condenser, combined in the heat exchanger assembly and by each over the entire depth of the heat exchanger assembly continuous, one-piece side parts 12c analogous to the embodiment of the Fig. 1 to 5 held together.
- the flat tubes 24c of the first heat exchanger, the flat tubes 22c of the second heat exchanger and the flat tubes 21c of the third heat exchanger are thus arranged at short distances from each other.
- these flat tubes 21c, 22c, 24c are in each case parallel between these and extending over the entire width all flat tubes 21c, 22c, 24c extending corrugated fins 28 connected to each other.
- the heat exchanger assembly 29 according to Fig. 11 corresponds in its structure basically the embodiment of the Fig. 1 to 5 or Fig. 10 ,
- a water / air cooler has flat tubes 30 of a ribs / tube block, not shown, on the expanded tube ends directly water tanks 35 are placed.
- the water boxes 35 are identical and designed symmetrically to each other and each have a connection piece 37, which according to the illustration Fig. 11 parallel to each other in the same direction.
- the intercooler has analogous to the water / air cooler designed flat tubes 31 of an associated ribs / tube block, auf'deren expanded tube ends on opposite sides in each case an air box 34 is placed.
- the air boxes 34 on the opposite sides of the intercooler are identical and designed symmetrically to each other, both air boxes each having a manifold, which is curved in each case above or below the respective water tank 35 so symmetrical to the water / air cooler that the used Connecting piece 36 are aligned parallel to the connecting piece 37 of the water / air cooler.
- the condenser which is composed of flow boxes 33 and a flat tubes 32 having ribs / tube block is also constructed symmetrically to a median transverse plane (shown in phantom) of the heat exchanger assembly.
- the individual heat exchanger after Fig. 11 are corrugated fins extending through common side parts and / or over the entire depth of the heat exchanger assembly 29 to a total block analogous to the embodiments described above firmly connected.
- all components of the heat exchanger and the heat exchanger assembly are made for soldering in a common soldering process of metal.
- the heat exchanger arrangements according to 8 to 11 have on the one hand flow boxes (water tank 2a and flow box 13a after Fig. 8 and water tank 35, air box 34 and flow box 33 after Fig. 11 ), which are separated from each other by insulation gaps SP 1 , SP 4 . It is between the water tank 2a and the flow box 13a after Fig. 8 only a narrow insulation gap SP 1 of about 1 mm provided, the insulation gap between the water tank 35 and the air box 34 is designed much larger. The insulation gaps should avoid heat transfer between the different hot or hot flow boxes during operation.
- insulation gaps SP 2 are provided between the tubes 21b, 24b, as well as insulation gaps SP 2 and SP 3 between the tubes 21c, 22c, 24c, which serve for thermal insulation of the adjacent tube blocks ( Fig. 9, 10th ).
- Insulation column SP 2 , SP 3 between the tubes 31, 32 and 30, 31 is provided.
- All insulation gaps have a width between 1 mm and 10 mm.
- a heat exchanger as disclosed with reference to the water / air cooler and the intercooler of the embodiments described above, may have various details, resulting in a heat exchanger with a fundamentally already described construction, the following reference to the Fig. 12 to 27 listed embodiments result. These details, either alone or in an optional combination, can give the respective embodiments of heat exchangers.
- Fig. 12 the flared tube ends of the fin / tube block of a heat exchanger, as previously described in principle, provided with a rectangular bulge A, as shown in Fig. 20 is shown.
- the width L ( Fig. 14 ) of the longitudinal wall sections of each upturn A is less than the width B 2 (FIG. Fig. 14 ) of the associated flat tubes.
- the longitudinal wall sections extending in the longitudinal direction of the flow boxes have a width B 1 which corresponds to the pitch T of the fin / tube block.
- the height H 1 of the transverse wall sections of the bulges A which corresponds to the height der'vanidization these wall sections together, is between 0.3 and 2 times the pitch T of the rib / tube block, the selection of this range depending on respective requirements of the Heat exchanger is selected.
- each bulge A between the normal flat tube cross-section and the respective end face of the flared tube end has an angle of inclination W - to the surface of the transverse wall portion of the bulge A - on which between 5 ° and 90 °, but preferably between 25 ° and 65 ° lies.
- the transition region either as an inclined plane or only as a direct connection of two radii - from the flat tube on the one hand and from the bulge forth on the other hand - be provided.
- the inclination angle W is then determined by the common tangent of the two radii. How out Fig. 15 is recognizable, the height H 2 of the longitudinal wall sections of each bulge A, the.
- the degree of bulge is defined, inter alia, by the ratio of the sizes of the bulge A on the one hand and the associated flat tube F on the other.
- the scope of the bulge A is dimensioned according to preferred embodiments so that it corresponds to the circumference of the associated flat tube F plus or minus 30%.
- the corners of the rectangular bulges A of the flat tubes preferably have an outer radius R a and an inner radius R i (FIG. Fig. 16 ), which are between 0 and 2 mm.
- the outer radius R a is so dimensioned that remain only very narrow joints between the adjacent pipe ends and the side walls of the flow boxes, which are completely and tightly filled in the soldering oven by the flowing solder.
- the tube ends of the flat tubes F of the ribs / tube block are expanded asymmetrically, resulting in a center longitudinal plane of each flat tube F offset bulges A S.
- the adjacent bulges A S are according to Fig. 13 put together to achieve the mutual tight connection.
- the flat tubes form either according to the flat tube F 1 of FIG. 19 a single, continuous flow channel, or are according to the embodiment of the FIGS. 14 to 18 provided with two separate flow channels (F S1 , F S2 ), wherein the illustrated flat tube F is designed by corresponding longitudinal corrugations N on opposite sides.
- the two flow channels can also be created by a correspondingly extruded aluminum profile. In an embodiment of the invention, not shown, more than two flow channels are provided in a flat tube.
- the "bottomless" heat exchanger where flow boxes are placed directly on the expanded tube ends of the fin / tube block, continue to improve.
- a positive fixation of the expanded pipe ends to each other transversely to the longitudinal direction of the flow boxes not shown, achieved by a corresponding shaping of the transverse wall sections of the flared pipe ends A 1 , A 2 , A 3 and A 6 .
- the wall sections are correspondingly arcuately curved.
- they are wavy curved.
- FIG. 23 have arcuate curvatures extending between rectilinear webs of the wall sections.
- FIG. 26 The wall sections are also wavy, wherein the waveform extends to the transverse side wall portions and does not transition into rectilinear webs, as in the embodiment according to Fig. 22 the case is.
- FIGS. 24 and 25 are the transverse wall portions of the flared pipe ends A 4 and A 5 over the embodiment according to Fig. 20 unchanged straight and flat.
- For the longitudinal side wall sections are V-shaped expanded outwards.
- the corresponding wall portions S 1 of the attached flow box zigzag-shaped, so that there is a positive engagement in the longitudinal direction of the flow box between the widened pipe ends A 4 and the wall regions of the respective flow box 1.
- Fig. 25 instead of a V-shaped widening, a wave-shaped widening of the longitudinal-side wall sections of the widened tube ends A 5 is provided.
- the corresponding wall regions of the flow box S 2 are curved in an undulating manner, whereby a positive connection between the flow box S 2 and the pipe ends A 5 results in the same way, as in the exemplary embodiment according to FIG Fig. 24 ,
- Fig. 27 are the bulges A of the flat tubes F 2 obliquely, preferably approximately diagonally, offset from the central longitudinal planes of the flat tubes F 2 , resulting in the flush juxtaposition of the tube ends the parallel and oblique orientation of the flat tubes F 2 shown .
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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)
- Sorption Type Refrigeration Machines (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
Die Erfindung betrifft einen Wärmeübertrager für ein Kraftfahrzeug mit einem Rippen/Rohrblock, dessen Flachrohre auf gegenüberliegenden Seiten mit derart aufgeweiteten Rohrenden versehen sind, daß quer verlaufende, einander benachbarte Wandungsabschnitte der Rohrenden flächig aneinanderliegen und die Rohrenden in einer Reihe miteinander fluchten, wobei auf die Rohrenden auf beiden Seiten jeweils ein Strömungskasten bündig abschließend mit entsprechenden längsverlaufenden Wandungsabschnitten der Rohrenden aufgesetzt ist, sowie eine Wärmeübertrageranordnung für ein Kraftfahrzeug mit wenigstens zwei in Durchströmungsrichtung hintereinander angeordneten Wärmeübertragern.The invention relates to a heat exchanger for a motor vehicle with a rib / tube block, the flat tubes are provided on opposite sides with such expanded tube ends that abutting, adjacent wall sections of the tube ends lie flat against each other and the tube ends are aligned in a row, wherein the tube ends on both sides in each case a flow box is flush mounted with corresponding longitudinal wall sections of the pipe ends, and a heat exchanger assembly for a motor vehicle with at least two in the flow direction successively arranged heat exchangers.
In der nicht vorveröffentlichten
Aufgabe der Erfindung ist es, einen Wärmeübertrager sowie eine Wärmeübertrageranordnung der eingangs genannten Art zu schaffen, die eine funktionssichere Herstellung sowie einen einfachen und platzsparenden Aufbau ermöglichen.The object of the invention is to provide a heat exchanger and a heat exchanger arrangement of the type mentioned, which enable a reliable production and a simple and space-saving design.
Für den Wärmeübertrager wird diese Aufgabe dadurch gelöst, dass dicht zusammenzufügende Abschnitte von einzelnen Bauteilen des Wärmeübertragers für einen gemeinsamen Lötprozess lotplattiert sind und die Ecken der aufgeweiteten Rohrenden mit Radien zwischen 0 und 2 mm versehen sind, so dass zwischen benachbarten Rohrenden und Seitenwandungen des jeweiligen Strömungskastens durch fließendes Lot dicht ausfüllbare Fugen verbleiben. Durch die erfindungsgemäß bemessenen Radien verbleiben zwischen benachbarten Rohrenden und Seitenwandungen der Strömungskästen nur sehr schmale Fugen, die im Lötofen durch fließendes Lot vollständig und dicht ausgefüllt werden.For the heat exchanger, this object is achieved in that densely mated sections of individual components of the heat exchanger are solder plated for a common soldering and the corners of the expanded pipe ends are provided with radii between 0 and 2 mm, so that between adjacent pipe ends and side walls of the respective flow box remain tightly filled by flowing solder joints. By inventively sized radii remain between adjacent pipe ends and side walls of the flow boxes only very narrow joints that are completely and tightly filled in the soldering oven by flowing solder.
Gemäß einer bevorzugten Ausführungsform ist vorgesehen, daß die einander benachbarten, querverlaufenden Wandungsabschnitte der Rohrenden formschlüssig aneinanderliegen. Dadurch ist es möglich, bereits bei der Vormontage des Wärmeübertragers, d.h. vor der Verlötung der einzelnen Bauteile, eine exakte Ausrichtung und Fixierung der Rohrenden aneinander zu erzielen. Toleranzen durch einen seitlichen versatz einzelner Rohrenden können vermieden werden. Durch die formschlüssige Anlage der Wandungsabschnitte aneinander ergibt sich zudem eine vergrößerte Anlagefläche, die eine erhöhte Sicherheit der Lötverbindung zur Folge hat.According to a preferred embodiment, it is provided that the adjacent, transverse wall sections of the pipe ends abut each other in a form-fitting manner. This makes it possible to achieve an exact alignment and fixation of the pipe ends to each other during the pre-assembly of the heat exchanger, ie before the soldering of the individual components. Tolerances due to a lateral offset of individual pipe ends can be avoided. The positive engagement of the wall sections together also results in an enlarged contact surface, which has an increased security of the solder joint result.
In Ausgestaltung der Erfindung liegen die den Strömungskästen zugewandten, längsverläufenden Wanduhgsabschnitte der Rohrenden formschlüssig an korrespondierenden Wandungsbereichen der Strömungskästen an. Dadurch wird die Vormontage des Wärmeübertragers weiter verbessert, da auch die Strömungskästen - auf ihre Längsrichtung bezogen - exakt positioniert auf die Rohrenden aufgesetzt werden und in Längsrichtung durch den Formschluß fixiert gehalten werden können. Zudem gewährleistet die formschlüssige Anlage einen vergrößerten Anlageflächenbereich, der die Dichtheit und die Sicherheit der späteren Lötverbindung zwischen den Strömungskästen und den Rohrenden weiter verbessert.In an embodiment of the invention, the flow boxes facing, längsverläufenden Wanduhgsabschnitte the pipe ends are positively against corresponding wall portions of the flow boxes. As a result, the pre-assembly of the heat exchanger is further improved, since the flow boxes - relative to their longitudinal direction - are positioned exactly positioned on the pipe ends and can be kept fixed in the longitudinal direction by the positive engagement. In addition, the positive-locking system ensures an enlarged contact surface area, which further improves the tightness and safety of the subsequent solder joint between the flow boxes and the pipe ends.
Die Ecken der aufgeweiteten Rohrenden sind mit Radien zwischen 0 und 2 mm versehen. Dabei weisen die aufgeweiteten Rohrenden vorzugsweise eine rechteckige Form auf, die gemäß den zuvor beschriebenen Ausgestaltungen zusätzlich mit entsprechend verformten Wandungsabschnitten versehen sein können. Die bevorzugten Radien gewährleisten, daß zwischen den benachbarten Rohrenden auch im Bereich der Außenseiten lediglich äußerst schmale Spalte verbleiben, die vollständig durch das Lot beim Lötvorgang aufgefüllt werden können, so daß die dichte Lötverbindung untereinander und insbesondere zu den seitlichen Wandungsbereichen der Strömungskästen gewährleistet ist.The corners of the flared pipe ends are provided with radii between 0 and 2 mm. In this case, the widened tube ends preferably have a rectangular shape, which according to the embodiments described above may additionally be provided with correspondingly deformed wall sections. The preferred radii ensure that only extremely narrow gaps remain between the adjacent pipe ends even in the region of the outer sides, which can be completely filled by the solder during the soldering operation, so that the dense solder joint is ensured with one another and in particular with the lateral wall regions of the flow boxes.
In weiterer Ausgestaltung der Erfindung sind die Rohrenden jeweils asymmetrisch zu Mittellängsebenen der zugeordneten Flachrohre aufgeweitet. Dadurch ist'es möglich, spezielle Anordnungen der Bauteile des Wärmeübertragers zu verwirklichen, ohne die sichere Funktion des Wärmeübertragers zu beeinflussen.In a further embodiment of the invention, the pipe ends are each expanded asymmetrically to the central longitudinal planes of the associated flat tubes. This makes it possible to realize special arrangements of the components of the heat exchanger, without affecting the safe operation of the heat exchanger.
In weiterer Ausgestaltung der Erfindung entspricht der Umfang der Aufweitung jedes Rohrendes dem Umfang des'zugeordneten Flachrohres zuzüglich oder abzüglich 30%. Die negative Relation zwischen dem Umfang jedes Flachrohres und dem Umfang des zugeordneten, aufgeweiteten Rohrendes ergibt sich insbesondere durch eine abschnittsweise doppelwandige Faltung der Wandung der Rohrenden.In a further embodiment of the invention, the extent of the expansion of each tube end corresponds to the circumference of the associated flat tube plus or
In weiterer Ausgestaltung der Erfindung weisen die den benachbarten Rohrenden zugewandten querseitigen Wandungsabschnitte eine Höhe zwischen 0,3 und 2 mal einem Teilungsabstand der Flachrohre, nämlich 0,3T ≤ H1 ≤ 2T, auf. Dieser bevorzugte Dimensionierungsbereich ermöglicht eine sichere dichte Verbindung zwischen den Rohrenden sowie eine ausreichende Stabilität des gesamten Rippen/Rohrblockes.In a further embodiment of the invention, the adjacent pipe ends facing transverse wall sections have a height between 0.3 and 2 times a pitch the flat tubes, namely 0.3T ≤ H 1 ≤ 2T on. This preferred dimensioning allows a secure tight connection between the pipe ends and sufficient stability of the entire fins / tube block.
In weiterer Ausgestaltung der Erfindung sind die Flachrohre relativ zur Symmetrieachse der aufgeweiteten Rohrenden schräg verlaufend ausgerichtet. Auch durch diese Ausgestaltung ist eine spezielle Anordnung des Wärmeübertragers in einem Kraftfahrzeug möglich, wobei insbesondere eine schräge Anordnung des Wärmeübertragers innerhalb eines Motorraumes des Kraftfahrzeugs - auf die normale Fahrtrichtung des Kraftfahrzeugs bezogen - vorteilhaft ist.In a further embodiment of the invention, the flat tubes are aligned obliquely relative to the axis of symmetry of the expanded tube ends. A special arrangement of the heat exchanger in a motor vehicle is also possible with this design, wherein, in particular, an oblique arrangement of the heat exchanger within an engine compartment of the motor vehicle - relative to the normal direction of travel of the motor vehicle - is advantageous.
Für die Wärmeübertrageranordnung wird die erfindungsgemäße Aufgabe dadurch gelöst, daß den wenigstens zwei Wärmeübertragern auf gegenüberliegenden Seiten jeweils ein gemeinsames Seitenteil zugeordnet ist. Durch die gemeinsamen Seitenteile wird zum einen eine einfache und sichere Verbindung der Wärmeübertrager relativ zueinander und zum anderen eine exakte Positionierung relativ zueinander erreicht. Darüber hinaus ergibt sich eine vereinfachte Montage und Herstellung für die Wärmeübertrageranordnung mit einer reduzierten Anzahl von Bauteilen.For the heat exchanger assembly, the object of the invention is achieved in that the at least two heat exchangers on opposite sides in each case a common side part is assigned. By the common side parts on the one hand a simple and secure connection of the heat exchanger relative to each other and on the other an exact positioning relative to each other is achieved. In addition, there is a simplified assembly and manufacturing for the heat exchanger assembly with a reduced number of components.
In Ausgestaltung der Erfindung sind die Strömungskästen von wenigstens einem Wärmeübertrager in ihren Seitenbereichen offen gestaltet, und die gegenüberliegenden Seitenteile sind jeweils mit wenigstens einem korrespondierenden Abschlußabschnitt versehen, die in die jeweiligen Seitenbereiche der Strömungskästen hineinragen und diese dicht abschließen. Dadurch ist es möglich, die Strömungskästen einfach zu gestalten, da diese als einfache U-Profile tiefgezogen werden können.In an embodiment of the invention, the flow boxes are designed to be open by at least one heat exchanger in their side areas, and the opposite side parts are each provided with at least one corresponding end portion which protrude into the respective side regions of the flow boxes and seal them tight. This makes it possible to make the flow boxes simple, as they can be thermoformed as a simple U-profiles.
In weiterer Ausgestaltung der Erfindung weisen die wenigstens zwei Wärmeübertrager gemeinsame, sich über die Gesamttiefe des Rippen/Rohrblockes erstreckende Rippen auf. Dadurch wird ein vereinfachter Aufbau der Wärmeübertrageranordnung erzielt, da die Anzahl der Bauteile reduziert ist und die Rippen direkt die Verbindung der Wärmeübertrager untereinander herstellen.In a further embodiment of the invention, the at least two heat exchangers have in common, over the total depth of the ribs / tube block extending ribs. As a result, a simplified structure of the heat exchanger assembly is achieved because the number of components is reduced and the ribs directly connect the heat exchanger with each other.
In weiterer Ausgestaltung der Erfindung sind die Strömungskästen der wenigstens zwei Wärmeübertrager mit Anschlußstutzen versehen, die parallel zueinander und gleichsinnig gekrümmt ausgerichtet sind. Dadurch ist eine strömungsgünstige Anordnung der Anschlußstutzen gegeben, die zudem auch platzsparend wirkt.In a further embodiment of the invention, the flow boxes of the at least two heat exchangers are provided with connecting pieces, which are aligned parallel to each other and curved in the same direction. As a result, a streamlined arrangement of the connection piece is given, which also also saves space.
In weiterer Ausgestaltung der Erfindung sind zwischen den Rohren und/oder den Strömungskästen Isolationsspalte angeordnet. Diese Isolationsspalte dienen zur thermischen Isolierung der benachbarten Wärmeübertrager gegeneinander, wobei die Isolationsspalte die Rohre jeweils vorzugsweise über ihre gesamte Länge bis zu den jeweiligen Strömungskästen voneinander trennen. Diese Ausgestaltung erfaßt jedoch auch Isolationsspalte, die lediglich abschnittsweise zwischen den benachbarten Rohren und/oder Strömungskästen vorgesehen sind. Die Isolationsspalte weisen bevorzugte Breiten zwischen 1 und 10 mm auf.In a further embodiment of the invention, insulating gaps are arranged between the tubes and / or the flow boxes. These insulation gaps serve for the thermal insulation of the adjacent heat exchangers against each other, wherein the insulation gaps preferably separate the tubes from each other over their entire length up to the respective flow boxes. However, this embodiment also detects insulation gaps, which are provided only in sections between the adjacent pipes and / or flow boxes. The insulation gaps have preferred widths between 1 and 10 mm.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Ansprüchen sowie aus der nachfolgenden Beschreibung von bevorzugten Ausführungsbeispielen der Erfindung, die anhand der Zeichnungen dargestellt sind.
- Fig. 1
- zeigt eine Frontansicht einer Ausführungsform einer erfindungsgemäßen Wärmeübertrageranordnung, die aus drei unterschiedlichen Wärmeübertragern zusammengesetzt ist,
- Fig. 2
- eine Seitenansicht der Wärmeübertrageranordnung nach
Fig. 1 , - Fig. 3
- ein gemeinsames Seitenteil für die Wärmeübertrageranordnung nach den
Fig. 1 und2 , - Fig. 4
- eine Ansicht des Seitenteiles nach
Fig. 3 in Richtung des Pfeiles IV inFig. 3 , - Fig. 5
- einen Schnitt durch die Wärmeübertrageranordnung nach den
Fig. 1 und2 entlang der Schnittlinie V-V inFig. 2 , - Fig. 6
- einen Schnitt durch eine weitere Wärmeübertrageranordnung nach
Fig. 7 entlang der Schnittlinie VI-VI inFig. 7 , - Fig. 7
- eine Seitenansicht der weiteren Wärmeübertrageranordnung, die zwei unterschiedliche Wärmeübertrager mit einem gemeinsamen Seitenteil aufweist,
- Fig. 8
- einen Längsschnitt durch die Wärmeübertrageranordnung nach
Fig. 7 , - Fig. 9
- schematisch einen Querschnitt auf Höhe eine Rippen/ Rohrblockes durch eine Wärmeübertrageranordnung ähnlich den
Fig. 7 und8 , - Fig. 10
- einen weiteren schematischen Querschnitt durch eine Wärmeübertrageranordnung ähnlich den
Fig. 1 ,2 und5 im Bereich eines gemeinsamen Rippen/Rohrblockes, - Fig. 11
- einen Längsschnitt durch eine weitere Ausführungsform einer erfindungsgemäßen Wärmeübertrageranordnung mit drei unterschiedlichen Wärmeübertragern, die strömungsgünstig und symmetrisch angeordnete Anschlußstutzen aufweisen,
- Fig. 12
- schematisch einen Ausschnitt eines Rippen/Rohrblockes im Bereich aufgeweiteter Rohrenden,
- Fig. 13
- einen weiteren Ausschnitt eines Rippen/Rohrblockes ähnlich
Fig. 12 mit asymmetrisch aufgeweiteten Rohrenden, - Fig. 14
- einen Ausschnitt eines Flachrohres gemäß
Fig. 12 im Bereich seines aufgeweiteten Rohrendes, - Fig. 15
- schematisch einen Schnitt durch einen als Strömungskasten dienenden Wasserkasten, der auf aufgeweitete Rohrenden von Flachrohren aufgesetzt ist,
- Fig. 16
- eine Draufsicht auf das Flachrohr nach
Fig. 14 in Richtung des Pfeiles XVI inFig. 14 , - Fig. 16a
- einen vergrößerten Ausschnitt des Flachrohres nach
Fig. 16 in dem Bereich XVIa inFig. 16 , - Fig. 17
- eine weitere Draufsicht in
Fig. 16 , jedoch auf ein asymmetrisch aufgeweitetes Flachrohr, - Fig. 18
- einen Schnitt durch das Flachrohr gemäß
Fig. 14 entlang der Schnittlinie XVIII inFig. 14 , - Fig. 19
- einen Schnitt durch ein weiteres Flachrohr ähnlich
Fig. 18 , - Fig. 20
- einen Schnitt durch das Flachrohr nach
Fig. 14 im Bereich seines aufgeweiteten Rohrendes entlang der Schnittlinie XX-XX inFig. 14 , - Fig. 21
- schematisch eine Draufsicht auf aufgeweitete Rohrenden eines Rippen/Rohrblockes,
- Fig. 22
- schematisch aufgeweitete Rohrenden eines weiteren Rippen/Rohrblockes ähnlich
Fig. 21 , - Fig. 23
- schematisch eine Draufsicht auf aufgeweitete Rohrenden eines weiteren Rippen/Rohrblockes ähnlich
Fig. 21 , - Fig. 24
- schematisch einen Querschnitt durch einen Wärmeübertrager im Bereich aufgeweiteter Rohrenden und eines aufgesetzten Strömungskastens,
- Fig. 25
- schematisch eine Darstellung ähnlich
Fig. 24 , wobei die formschlüssige Fixierung des Strömungskastens auf den aufgeweiteten Rohrenden anders gestaltet ist, - Fig. 26
- schematisch aufgeweitete Rohrenden eines weiteren Rippen/Rohrblockes ähnlich den
Fig. 21 , undbis 23 - Fig. 27
- schematisch eine Draufsicht auf einen Rippen/Rohrblock mit aufgeweiteten Rohrenden und schräggestellten Flachrohren.
- Fig. 1
- shows a front view of an embodiment of a heat exchanger assembly according to the invention, which is composed of three different heat exchangers,
- Fig. 2
- a side view of the heat exchanger assembly according to
Fig. 1 . - Fig. 3
- a common side part for the heat exchanger assembly according to
Fig. 1 and2 . - Fig. 4
- a view of the side part after
Fig. 3 in the direction of the arrow IV inFig. 3 . - Fig. 5
- a section through the heat exchanger assembly according to the
Fig. 1 and2 along the section line VV inFig. 2 . - Fig. 6
- a section through a further heat exchanger arrangement according to
Fig. 7 along the section line VI-VI inFig. 7 . - Fig. 7
- a side view of the further heat exchanger assembly having two different heat exchanger with a common side part,
- Fig. 8
- a longitudinal section through the heat exchanger assembly according to
Fig. 7 . - Fig. 9
- schematically a cross-section at the height of a ribs / tube block by a heat exchanger assembly similar to
Fig. 7 and8th . - Fig. 10
- a further schematic cross section through a heat exchanger assembly similar to
Fig. 1 .2 and5 in the area of a common rib / tube block, - Fig. 11
- a longitudinal section through a further embodiment of a heat exchanger assembly according to the invention with three different heat exchangers, which have streamlined and symmetrically arranged connecting pieces,
- Fig. 12
- schematically a section of a ribs / tube block in the area of expanded tube ends,
- Fig. 13
- another section of a rib / tube block similar
Fig. 12 with asymmetrically flared pipe ends, - Fig. 14
- a section of a flat tube according to
Fig. 12 in the area of its widened pipe end, - Fig. 15
- 1 is a schematic section through a water box serving as a flow box, which is mounted on flared tube ends of flat tubes;
- Fig. 16
- a plan view of the flat tube after
Fig. 14 in the direction of the arrow XVI inFig. 14 . - Fig. 16a
- an enlarged section of the flat tube after
Fig. 16 in the area XVIa inFig. 16 . - Fig. 17
- another plan view in
Fig. 16 but on an asymmetrically flared flat tube, - Fig. 18
- a section through the flat tube according to
Fig. 14 along the section line XVIII inFig. 14 . - Fig. 19
- similar to a section through another flat tube
Fig. 18 . - Fig. 20
- a section through the flat tube after
Fig. 14 in the area of its expanded pipe end along the section line XX-XX inFig. 14 . - Fig. 21
- 2 is a schematic plan view of expanded tube ends of a rib / tube block,
- Fig. 22
- schematically expanded pipe ends of another ribs / tube block similar
Fig. 21 . - Fig. 23
- schematically similar to a plan view of expanded pipe ends of another ribs / tube block
Fig. 21 . - Fig. 24
- 1 is a schematic cross section through a heat exchanger in the area of widened tube ends and an attached flow box;
- Fig. 25
- schematically a representation similar
Fig. 24 , wherein the positive fixing of the flow box is designed differently on the widened tube ends, - Fig. 26
- schematically expanded tube ends of another ribs / tube block similar to the
Fig. 21 to 23 , and - Fig. 27
- schematically a plan view of a rib / tube block with flared pipe ends and inclined flat tubes.
Eine Wärmeübertrageranordnung 1 für ein Kraftfahrzeug gemäß den
Sowohl der Rippen/Rohrblock des Ladeluftkühlers als auch der Rippen/Rohrblock des Wasser/Luft-Kühlers sind aus einer Vielzahl von zueinander parallelen Flachrohren sowie zwischen' diesen angeordneten Wellrippen zusammengesetzt. Die gegenüberliegenden Rohrenden der Flachrohre sind jeweils rechtekkig aufgeweitet, so daß die Rohrenden gemäß
Die Strömungskästen sowohl des Ladeluftkühlers als auch des Wasser/Luft-Kühlers sind an ihren gegenüberliegenden Seitenbereichen jeweils offen gestaltet. Den seitlichen Abschluß dieser Seitenbereiche der Strömungskästen übernimmt jeweils ein Abschlußabschnitt 15, 16, 18, 19 eines Seitenteiles 11, 12, das sich einstückig über die gesamte Tiefe der Wärmeübertrageranordnung und damit über alle drei Wärmeübertrager erstreckt. Die beiden Seitenteile 11, 12 begrenzen die Rippen/Rohrblöcke des Wasser/Luft-Kühlers, des Ladeluftkühlers und des Kondensators auf gegenüberliegenden Seiten. Die Abschlußabschnitte 15, 16, 18, 19 jedes Seitenteiles 11, 12 ragen in Verlängerung der Seitenteile jeweils in die Seitenbereiche der Strömungskästen hinein ab, wobei die Außenkonturen der Abschlußabschnitte 15, 16, 18, 19 jeweils exakt an die Innenkonturen der Seitenbereiche der Strömungskästen angepaßt sind, so daß sich eine umlaufend dichte Anlage der Abschlußabschnitte 15, 16, 18, 19 an den entsprechenden Innenwandungen der Strömungskästen ergibt.The flow boxes of both the intercooler and the water / air cooler are each designed to be open at their opposite side areas. The lateral conclusion of these side areas of the flow boxes each take a
Zur Stabilisierung der Abschlußabschnitte 15, 16, 18, 19 sowie zur Vergrößerung der flächigen, umlaufenden Anlage der Abschlußabschnitte 15, 16, 18, 19 an den jeweiligen Innenwandungen der Strömungskästen weisen diese in ihrem Randbereich jeweils einen längs der Wandungen der Strömungskästen verlaufenden Anlagesteg auf, der rechtwinklig zu der Fläche des jeweiligen Seitenteils 11, 12 und damit parallel zu den Innenwandungen des jeweiligen Strömungskastens abragt. Im Bereich der Strömungskästen 13, 14 des Kondenstators weisen die Seitenteile 11, 12 lediglich einen Anlageabschnitt 17 auf, der sich an einer Unterkante der jeweiligen Halbschale der Strömungskästen 13, 14 abstützt und somit keine seitliche Dichtfunktion übernimmt. Wie bereits beschrieben, werden die seitlichen Dichtfunktionen der Strömungskästen 13, 14 durch entsprechende seitliche Schließdeckel erfüllt, die in die Hohlkammerprofile der Strömungskästen 13, 14 dicht eingesetzt sind. Die beiden Seitenteile 11, 12 werden für die Montage der Wärmeübertrageranordnung von gegenüberliegenden Seiten her an die Rippen/Rohrblöcke angesetzt und gleichzeitig mit ihren Abschlußabschnitten 15, 16, 18, 19 axial - auf die Längsrichtung der Strömungskästen bezogen - in die Strömungskästen eingesetzt. Durch eine Spannvorrichtung wie Spannbänder oder ähnliches wird die gesamte Wärmeübertrageranordnung einschließlich der Seitenteile 11, 12 in Querrichtung der Rippen/Rohrblöcke auf Druck belastet und anschließend in einem gemeinsamen Lötprozeß dicht verlötet. Voraussetzung hierfür ist selbstverständlich, daß alle Bauteile der Wärmeübertrageranordnung 1 aus Metallblech, vorzugsweise einer Aluminiumlegierung, hergestellt sind. Wenigstens die jeweils dicht zusammenzufügenden Abschnitte der einzelnen Bauteile der Wärmeübertrageranordnung sind entsprechend lotplattiert. Um die Seitenteile 11, 12 bereits im Vormontagestadium in den Seitenbereichen der Strömungskästen zu fixieren, sind an den gegenüberliegenden Stirnkanten der Strömungskästen jeweils Haltekrallen vorgesehen, die beim Ausführungsbeispiel nach
Wie aus der Darstellung nach
Eine weitere Wärmeübertrageranordnung gemäß den
Im Ausführungsbeispiel nach
Die Wärmeübertrageranordnung gemäß
Die Wärmeübertrageranordnung 29 gemäß
Die Wärmeübertrageranordnungen nach den
Ergänzend oder alternativ sind zwischen den Rohren 21b, 24b weitere Isolationsspalte SP2 sowie zwischen den Rohren 21c, 22c, 24c jeweils Isolationsspalte SP2 und SP3 vorgesehen, die zur thermischen Isolierung der benachbarten Rohrblöcke dienen (
Alle Isolationsspalte weisen eine Breite zwischen 1 mm und 10 mm auf.All insulation gaps have a width between 1 mm and 10 mm.
Ein Wärmeübertrager, wie er anhand der Wasser/Luft-Kühler sowie anhand der Ladeluftkühler der zuvor beschriebenen Ausführungsbeispiele offenbart ist, kann verschiedene Details aufweisen, wodurch sich für einen Wärmeübertrager mit einem grundsätzlich bereits beschriebenen Aufbau die nachfolgend anhand der
Gemäß
Der Übergangsbereich jeder Auftulpung A zwischen dem normalen Flachrohrquerschnitt und dem jeweiligen Stirnende des aufgeweiteten Rohrendes weist einen Neigungswinkel W - auf die Fläche des querverlaufenden Wandungsabschnittes der Auftulpung A bezogen - auf, der zwischen 5° und 90°, vorzugsweise jedoch zwischen 25° und 65° liegt. Dabei kann der Übergangsbereich entweder als schiefe Ebene oder aber lediglich als direkter Anschluß zweier Radien - vom Flachrohr aus einerseits und von der Auftulpung her andererseits - vorgesehen sein. In diesem Fall wird der Neigungswinkel W dann durch die gemeinsame Tangente der beiden Radien bestimmt. Wie aus
Die Ecken der rechteckigen Auftulpungen A der Flachrohre weisen vorzugsweise einen Außenradius Ra und einen Innenradius Ri (
Beim Ausführungsbeispiel nach den
Die Flachrohre bilden entweder gemäß dem Flachrohr F1 nach Fig.' 19 einen einzelnen, durchgehenden Strömungskanal, oder aber sind gemäß dem Ausführungsbeispiel nach den
Anhand der schematischen Darstellungen nach den
Bei den Ausführungsbeispielen nach den
Beim Ausführungsbeispiel nach
Claims (19)
- Heat exchanger for a motor vehicle with a rib/tube block (4), the flat tubes (30) of which have flared tube ends (A) on opposite sides, so that transversely extending, mutually adjacent wall sections of the tube ends (A) are in surface contact with one another and the tube ends are aligned in a row flush with one another, a respective flow box (35) being mounted on the tube ends (A) on both sides, terminating flush with corresponding longitudinally extending wall sections of the tube ends (A), characterised in that sections of individual components of the heat exchanger which are to be joined tightly are solder-plated for a common soldering process and the corners of the flared tube ends (A) are provided with radii (Ri, Ra) between 0 and 2 mm, thereby leaving very narrow gaps between adjacent tube ends (A) and side walls of the respective flow box (35), which are completely and tightly filled by the flowing solder.
- Heat exchanger according to claim 1, characterised in that the mutually adjacent, transversely extending wall sections of the tube ends (A1, A2, A3, A6) are in positive contact with one another.
- Heat exchanger according to claim 1 or 2, characterised in that the longitudinally extending wall sections of the tube ends (A4, A5) facing the flow boxes (S1, S2) are in positive contact with corresponding wall regions of the flow boxes (S1, S2).
- Heat exchanger according to claim 1, 2 or 3, characterised in that the facing transversely extending wall sections of adjacent tube ends (A2) are provided with mutually corresponding arcuate or undulating curvatures.
- Heat exchanger according to claim 3 or 4, characterised in that each of the longitudinally extending wall sections of the tube ends (A4, A5) is provided with at least one curvature or corner projecting from the alignment of the wall sections, and in that the associated wall regions of the flow boxes (S1, S2) are provided with corresponding opposite curvatures or scallops.
- Heat exchanger according to any of the preceding claims, characterised in that the tube ends (A5) are flared asymmetrically relative to a central plane of the associated flat tube (7).
- Heat exchanger according to any of the preceding claims, characterised in that the circumference of the flare (A) of each tube end corresponds to the circumference of the associated flat tube (F, F1) plus or minus 30%.
- Heat exchanger according to any of the preceding claims, characterised in that a transitional region between the flare of the tube end and a flat tube jacket is inclined at an angle (W) between 5° and 90°, preferably between 25° and 65°, relative to the transverse wall section of the flare.
- Heat exchanger according to any of the preceding claims, characterised in that the dimension (L) of the transversely extending wall sections is less than the width (B2) of the flat tubes.
- Heat exchanger according to any of the preceding claims, characterised in that the transversely extending wall sections facing the adjacent tube ends have a height (H1) of between 0.3 and 2 times a pitch distance (T) of the flat tubes, i.e. 0.3T≤H1≤2T.
- Heat exchanger according to any of the preceding claims, characterised in that the height (H2) of the soldering surface of the longitudinally extending wall sections facing the header (S) is less than the height (H2) of the transversely extending wall sections.
- Heat exchanger according to any of the preceding claims, characterised in that the flat tubes (F2) are aligned at an angle relative to the axes of symmetry of the flares (A) of the tube ends.
- Heat exchanger assembly for a motor vehicle with at least two heat exchangers disposed one behind the other in the direction of flow, characterised in that a common side piece (11, 12, 12a) is assigned to the at least two heat exchangers on opposite sides.
- Heat exchanger assembly according to claim 13, characterised in that the flow boxes (2, 3, 5, 6, 2a) of at least one heat exchanger are of an open construction in their side regions, and in that each of the opposite side pieces (11, 12, 12a) is provided with at least one corresponding termination section which projects into the respective side regions of the flow boxes (2, 3, 5, 6, 2a) and closes them off in a tight seal.
- Heat exchanger assembly according to claim 14, characterised in that the external contours of the termination sections match the corresponding internal contours of the side regions of the flow boxes (2, 3, 5, 6, 2a).
- Heat exchanger assembly according to the preamble of claim 13 or to any of claims 13 to 15, characterised in that the at least two heat exchangers have common ribs (27, 28) extending across the entire depth of the rib/tube block.
- Heat exchanger assembly according to the preamble of claim 13 or to any of the preceding claims, characterised in that the flat tubes (F) of at least one rib/tube block form at least two mutually parallel flow passages (FS1, FS2).
- Heat exchanger assembly according to the preamble of claim 13 or to any of the preceding claims, characterised in that the flow boxes (34, 35) of the at least two heat exchangers are provided with connector pieces (36, 37) which are parallel to one another and curved in the same direction.
- Heat exchanger assembly according to any of claims 13 to 18, characterised in that isolation gaps (SP1, SP2, SP3, SP4) are disposed between the tubes (21b, 24b; 21c, 22c, 24c; 30, 31, 32) and/or the flow boxes (2a, 13a; 33, 34, 35).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722097A DE19722097A1 (en) | 1997-05-27 | 1997-05-27 | Heat exchanger and heat exchanger arrangement for a motor vehicle |
DE19722097 | 1997-05-27 | ||
EP98107377A EP0881447B1 (en) | 1997-05-27 | 1998-04-23 | Heat exchanger and heat exchanging apparatus for vehicle |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98107377A Division EP0881447B1 (en) | 1997-05-27 | 1998-04-23 | Heat exchanger and heat exchanging apparatus for vehicle |
EP98107377.8 Division | 1998-04-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1435503A2 EP1435503A2 (en) | 2004-07-07 |
EP1435503A3 EP1435503A3 (en) | 2005-10-26 |
EP1435503B1 true EP1435503B1 (en) | 2009-02-11 |
Family
ID=7830602
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98107377A Expired - Lifetime EP0881447B1 (en) | 1997-05-27 | 1998-04-23 | Heat exchanger and heat exchanging apparatus for vehicle |
EP04008664A Expired - Lifetime EP1435503B1 (en) | 1997-05-27 | 1998-04-23 | Heat exchanger and heat exchanger assembly for vehicles |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98107377A Expired - Lifetime EP0881447B1 (en) | 1997-05-27 | 1998-04-23 | Heat exchanger and heat exchanging apparatus for vehicle |
Country Status (5)
Country | Link |
---|---|
US (1) | US6012512A (en) |
EP (2) | EP0881447B1 (en) |
JP (1) | JPH1114271A (en) |
DE (3) | DE19722097A1 (en) |
ES (1) | ES2226025T3 (en) |
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-
1997
- 1997-05-27 DE DE19722097A patent/DE19722097A1/en not_active Withdrawn
-
1998
- 1998-04-23 DE DE59811818T patent/DE59811818D1/en not_active Expired - Fee Related
- 1998-04-23 ES ES98107377T patent/ES2226025T3/en not_active Expired - Lifetime
- 1998-04-23 EP EP98107377A patent/EP0881447B1/en not_active Expired - Lifetime
- 1998-04-23 EP EP04008664A patent/EP1435503B1/en not_active Expired - Lifetime
- 1998-04-23 DE DE59814344T patent/DE59814344D1/en not_active Expired - Lifetime
- 1998-05-18 JP JP10135577A patent/JPH1114271A/en active Pending
- 1998-05-27 US US09/085,757 patent/US6012512A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1435503A3 (en) | 2005-10-26 |
EP0881447A2 (en) | 1998-12-02 |
ES2226025T3 (en) | 2005-03-16 |
DE59814344D1 (en) | 2009-03-26 |
EP1435503A2 (en) | 2004-07-07 |
DE59811818D1 (en) | 2004-09-23 |
EP0881447A3 (en) | 1999-06-23 |
EP0881447B1 (en) | 2004-08-18 |
JPH1114271A (en) | 1999-01-22 |
US6012512A (en) | 2000-01-11 |
DE19722097A1 (en) | 1998-12-03 |
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