EP2110632B1 - Heat exchanger, in particular charged air cooler, with a latchable fixing device - Google Patents
Heat exchanger, in particular charged air cooler, with a latchable fixing device Download PDFInfo
- Publication number
- EP2110632B1 EP2110632B1 EP08007269.7A EP08007269A EP2110632B1 EP 2110632 B1 EP2110632 B1 EP 2110632B1 EP 08007269 A EP08007269 A EP 08007269A EP 2110632 B1 EP2110632 B1 EP 2110632B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- securing device
- collection box
- flaps
- groove
- 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.)
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- 239000002826 coolant Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
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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
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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
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
- F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
-
- 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
-
- 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
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between 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
- F28F2275/00—Fastening; Joining
- F28F2275/08—Fastening; Joining by clamping or clipping
- F28F2275/085—Fastening; Joining by clamping or clipping with snap connection
Definitions
- the present invention relates to a heat exchanger according to the preamble of claim 1.
- a heat exchanger is made DE 199 53 787 A1 known.
- the invention further relates to a heat exchanger system with at least two heat exchangers.
- thermodynamically highly stressed heat exchanger may, for example, be a charge-air cooler which has to withstand temperatures of more than 230 ° C. and pressures of more than 2.5 bar, in particular more than 3 bar.
- the problem here is that often in a short time strong temperature and pressure changes occur, which has an influence on the outer dimensions of the heat exchanger, which change as a result, permanently. This is particularly problematic when the heat exchanger in question is large, since here the length, height and / or width changes due to a high thermodynamic alternating load are particularly strong.
- the attachment of such a thermodynamically highly stressed heat exchanger in a frame, as in the EP 1 602 808 B1 is therefore less suitable.
- this support frame is an avoidable additional part.
- thermodynamically highly stressed heat exchanger in addition to the length and / or width changes, other factors are taken into account, such as weight forces, acceleration forces, vibrations and, for example, intercoolers forces from internal pressure pulses acting on such a heat exchanger. Furthermore, a simple installation should be guaranteed.
- the object of the invention is to provide a heat exchanger of the type mentioned with a claim-friendly but still simple attachment option.
- a heat exchanger comprises two collecting tanks or collecting containers, between which a multiplicity of, preferably substantially parallel tubes, which open into the collecting tanks, extend.
- This may be a, in particular thermodynamically highly stressed intercooler, which is suitable for internal pressures up to 2.0 bar, preferably up to 3.0 bar, in particular up to 3.05 bar and / or temperatures of up to 230 ° Celsius withstand. Permanently changing pressure conditions lead to so-called internal pressure change pulses, which must be absorbed by the attachment. Even permanently changing temperature conditions require a suitable attachment of the heat exchanger to intercept the resulting length and / or width changes.
- the heat exchanger according to the invention therefore has at least one latchable fastening device for fastening.
- a latchable fastening device is part of a clip or snap connection, which engages in a corresponding counterpart or a corresponding receptacle, whereby a formsch Pavssige connection is achieved, which serves to secure the heat exchanger.
- This is the first time such a connection or attachment for a heat exchanger is used, which is arranged below a second heat exchanger.
- such an attachment can also be used for thermodynamically less stressed heat exchangers, such as for an oil cooler.
- the heat exchanger according to the invention is preferably one with a large structural dimensions, in particular the width, i. the distance between the collecting boxes is greater than 550 mm, preferably greater than 700 mm and in particular greater than 730 mm.
- Such a heat exchanger is, as mentioned above, exposed to strong changes in length and / or width as a result of thermal fluctuations and internal pressure change pulses. From the prior art are so far no satisfactory solutions for the reliable attachment of heat exchangers with strongly installed in the installed state length and width changes known, which allow in particular a simple installation.
- the fastening device for fastening the heat exchanger allows the latchable fastening means the advantage of a simple and quick installation of the heat exchanger in an assembly, without requiring further fasteners such as a support frame.
- the assembly is also easily manually or mechanically feasible.
- the latchable fastening device is positively connected to a counterpart on the module.
- such a latchable connection or attachment for disassembly of the heat exchanger can also easily solve again.
- At least one collecting box of the heat exchanger advantageously both collecting boxes, formed of a plastic material, wherein the fastening means integral, d: h. in one piece, is formed with the collecting box.
- a collecting box can be made, for example, as a plastic molded part.
- Such a molded fastening device proves to be extremely stable and advantageously reduces installation costs.
- the fastening device is arranged with respect to a mounting position of the heat exchanger at the top of the collecting box.
- this results in a simple assembly of the heat exchanger.
- the particular thermodynamically highly stressed heat exchanger can thus be arranged in a quasi-free mounting position, whereby the length and / or width changes due to the strong temperature fluctuations and internal pressure change pulses can absorb or intercept excellent.
- the fastening device comprises a plurality of resilient tabs, which are formed like a surface and are arranged substantially parallel to each other and spaced from each other with space.
- the fastening forces are advantageously distributed over several individual fasteners.
- the invention further provides that two missing tabs are provided in the fastening device, which are arranged areally and substantially parallel to the surface and spaced apart from each other. At their resilient, freely movable ends of these resilient tabs may each have a locking lug or locking bead.
- the two resilient tabs are preferably designed such that their resilient ends are moved towards each other during attachment of the heat exchanger and thus reduce the distance, and then spring back to produce a positive connection due to elastic restoring forces, wherein the locking lugs engage in locking grooves, or one Projecting tab on the corresponding receptacle of the second heat exchanger.
- the fastening device in the space between the two spaced tabs two support ribs has, which are formed substantially parallel to the resilient tabs, and which are intended to serve during the assembly of the heat exchanger as Eduktions vom and / or to increase the restoring forces during engagement of the latching noses. This also increases the transferable via the attachment forces, which is why such a trained fastening device is particularly suitable for fastening a thermodynamically highly stressed heat exchanger.
- the resilient tabs and / or the support ribs with a material thickness of 2 to 3 mm, preferably from in Essentially form 2.5 mm, wherein the resilient length of the resilient tabs preferably between 25 and 30 mm.
- the resilient length ranges from the articulation of the resilient tab to below the locking lug.
- a preferred embodiment of the invention provides that the fastening device is arranged on one of the two header boxes, while at the other header box a further fastening device is provided, which is designed as a plug-in slot, slot or the like.
- width changes of the heat exchanger ie changes in the distance between the headers, can thus be compensated for by the loose mounting in the suspended mounting position already mentioned above.
- a corresponding mandrel or the like engages in the plug-in groove.
- a heat exchanger system comprises a heat exchanger described above and at least one second heat exchanger, wherein the heat exchanger according to the invention is arranged below the second heat exchanger and by means of a fastening device of the type described above, preferably directly attached thereto.
- the second or upper heat exchanger is a coolant / air cooler, preferably the same width.
- the second heat exchanger has on its underside a corresponding to the fastening device of the heat exchanger according to the invention counterpart.
- additional mounting material for the attachment is not required.
- the distance between the two heat exchangers is preferably less than 10 mm.
- this heat exchanger system provides for a loose fixed bearing as described above, for which purpose a counterpart corresponding to the insertion groove of the heat exchanger according to the invention is additionally formed on the second heat exchanger, for example a mandrel.
- Such a mandrel is according to the invention designed so that it is received in the assembled state of the formed in the first heat exchanger plug-in.
- the designs of plug-in groove and mandrel preferably correspond in such a way that the mandrel is received during the assembly process in a widened at the edge opening, and then when joining the two heat exchangers in the inner region of the Plug groove is guided. There, the mandrel is then relatively narrowly guided transversely to the longitudinal axes of the heat exchanger to ensure reliable attachment.
- the mandrel In the longitudinal direction of the heat exchanger, the mandrel is preferably kept movable in order to enable a longitudinal compensation, which is required by the thermodynamic stresses of the first heat exchanger.
- a spring In the region of the mandrel, a spring is preferably formed, which is used and loaded during the assembly process between the heat exchangers. As a result, a firm hold between the two heat exchangers is achieved, which absorbs, for example, vibrations and mechanical shocks between the heat exchangers.
- the second or upper heat exchanger also has two header boxes made of a plastic material and has the same width as the heat exchanger according to the invention.
- These collection boxes are preferably formed integrally or in one piece.
- Fig. 1 shows a generally designated 10 left collection box of the charge air cooler according to the invention according to a preferred embodiment (the indication on the left refers to the direction of travel of the motor vehicle, in which such a heat exchanger is used).
- the Fig. 3a shows the right total collection tank designated 20 of the same heat exchanger. Between the left header 10 and the right header 20 extends a plurality of cooling tubes, which are not shown here.
- thermodynamically highly stressed intercooler which is designed for changing Innehdrücke up to 3.05 bar and fluctuating temperatures of the medium flowing through, in the exemplary embodiment charge air, up to 230 ° C.
- the left collection box 10 ( Fig. 1 ) has a connecting piece 11 through which the charge air to be cooled is introduced, depending on the direction of flow, or the already cooled charge air is discharged.
- the collecting box 10 is formed in one piece from a plastic material and has various ribs.
- the left collection box 10 has a designated 12 fastening means with which the intercooler can be mounted on its left side immediately below another, second heat exchanger, which in the exemplary embodiment, for example, a coolant / air cooler, for example for an internal combustion engine.
- the fastening device 12 is designed as a clip connection, with a corresponding counterpart being provided in a receiving device 41 arranged on the underside of the coolant radiator located above, for fastening purposes.
- a connecting device 42 is formed, which is partially received in the mounting device 41 during assembly.
- a connection contact surface 43 is arranged on the rear side of the connecting device 42, which abuts in the mounted state on a receiving contact surface 44, which is formed in the receiving device 41.
- Fig. 2 shows a section through the fastening device 12 on the left collection box 10.
- the fastening device 12 has in cross section a base 13 on which a first tab 14 and a second tab 16 are each arranged substantially at right angles.
- the tabs 14 and 16 are resiliently formed around its connection point to the base 13 and have at their free, ie resilient ends, in each case a latching lug 15 and 17, respectively.
- the two resilient tabs 14 and 16 are spaced with a Space arranged to each other and extend substantially parallel to the surface.
- the locking lugs 15 and 17 are remote from each other.
- two support ribs 18 and 19 are arranged, which are also spaced from each other and to each other and to the tabs 14 and 16 are substantially parallel to the surface.
- the support ribs 18 and 19 have, starting from the base 13, substantially equal lengths to the tabs 14 and 16.
- the support ribs 18 and 19 serve on the one hand for guidance and on the other hand for connection and balance of forces. In addition, they enhance the resilience of the tabs 14 and 16 both during assembly and when assembled.
- Both the tabs 14 and 16 and the two support ribs 18 and 19 have in the embodiment shown a material thickness of about 2.5 mm.
- the locking shoulder of the locking lug is approximately 3 mm.
- the dimensions given lead to a stable fastening device 12, which is the above-mentioned stresses, in particular forces from the internal pressure change pulses and thermal fluctuations, weight and acceleration forces, and vibration justice.
- the fastening device 12 as well as all associated therewith and previously described items are integrally or integrally formed with the left collection box 10.
- the tabs 14 and 16, as in Fig. 2 shown also be slightly bent or bent.
- the right collection box 20 ( Fig. 3a ) in turn has a connection piece 21.
- a fastening device in the form of a groove 22.
- the groove 22 is open to the right outside of the collecting tank 20 toward V-shaped. The opening angle is approximately 40 °.
- the groove 22 has a width of about 12 mm and a length of about 30 mm.
- FIG. 3b shows a sectional view through the mandrel 19 of the second heat exchanger in the form of a coolant radiator.
- the mandrel 31 is shown in the position in which it is in the assembled state of the intercooler 1, the right collection box 20 is shown.
- the mandrel 31 is connected to a arranged thereon rib on the coolant radiator. When inserted, it is guided transversely to the longitudinal extent of the intercooler with close tolerance, the rib is tapered in this transverse direction. In the longitudinal direction of the charge air cooler, the rib is guided with the mandrel 31 largely displaceable in the longitudinal direction in the groove 22, whereby a length compensation with changing longitudinal extent of the charge air cooler in this direction is possible.
- Fig. 3b is also an embodiment of the spring 32 is shown, which is arranged in this embodiment, the collecting box.
- the rib of the dome 31 is recessed in the region of the spring 32 and engages in the assembled state of the two heat exchangers in the spring.
- the Fig. 4 shows the attachment process of the intercooler previously described here in a shortened view with a total of 1 is designated immediately below a designated 3 coolant radiator. Shown is the attachment process on the left side.
- the fastening device formed as a groove of the right header tank 20 of the intercooler is already hooked into a mandrel 31, which is formed at the bottom of the right header box of the coolant radiator 3.
- the fastening device 12 is locked on the left header box 10 of the charge air cooler 1 in the receiving device 41 on the underside of the left header box 10 of the coolant / air cooler 3 (symbolized by the movement arrow in FIG Fig. 4 ).
- the connecting contact surface 43 formed on the rear side of the connecting device 42 contacts the receiving contact surface 44, which is formed in the receiving device 41, and thus serves to guide the assembly movement.
- the two resilient tabs 14 and 16 of the fastening device 12 engage in the corresponding receptacle, whereby a positive connection or attachment takes place.
- the intercooler 1 arranged hanging below the coolant radiator 3, wherein it is fixed on its left side, that is attached without degree of freedom and is movably mounted on its right side by the groove-mandrel guide. Any length, height and / or width changes of the charge air cooler can be achieved by such. Compensate Los fixed storage ideal, while a load-bearing fastening of the intercooler 1 is given at the same time.
- the distance a (see. Fig. 5a ) of both heat exchangers is less than 10 mm.
- the latchable fastening device on the underside of the coolant radiator 3 above (or another second heat exchanger) and on the left header box 10 of the intercooler Provide corresponding receptacle for this purpose.
- the groove 22 and the mandrel 31 can be reversed on the right side. The same applies to a regrouping of all or even individual fastening components between the left and the right side.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
Die vorliegende Erfindung betrifft einen Wärmetauscher nach dem Oberbegriff Anspruchs 1. Solch ein Wärmetauscher ist aus
Aus der
Ein solcher gemeinsamer Rahmen wie in der
Bei der Befestigung eines thermodynamisch hoch beanspruchten Wärmetauschers sind neben den Längen- und/oder Breitenveränderungen auch andere Faktoren zu berücksichtigen, beispielsweise Gewichtskräfte, Beschleunigungskräfte, Vibrationen und beispielsweise bei Ladeluftkühlern Kräfte aus Innendruckimpulsen, die auf einen solchen Wärmetauscher einwirken. Ferner soll eine einfache Montage gewährleistet sein.In the attachment of a thermodynamically highly stressed heat exchanger in addition to the length and / or width changes, other factors are taken into account, such as weight forces, acceleration forces, vibrations and, for example, intercoolers forces from internal pressure pulses acting on such a heat exchanger. Furthermore, a simple installation should be guaranteed.
Aus der
Aufgabe der Erfindung ist es, einen Wärmetauscher der eingangs genannten Art mit einer beanspruchungsgerechten aber dennoch einfachen Befestigungsmöglichkeit anzugeben.The object of the invention is to provide a heat exchanger of the type mentioned with a claim-friendly but still simple attachment option.
Diese Aufgabe wird gelöst durch einen Wärmetauscher nach dem Patentanspruch 1. Der nebengeordnete Patentanspruch 12 stellt ein Wärmetauschersystem mit einem solchen Wärmetauscher unter Schutz, die abhängigen Patentansprüche betreffen vorteilhafte Weiterbildungen.This object is achieved by a heat exchanger according to
Ein erfindungsgemäßer Wärmetauscher umfasst zwei Sammelkästen bzw. Sammelbehälter, zwischen denen sich eine Vielzahl von, vorzugsweise im Wesentlichen parallelen Rohren erstreckt, die in die Sammelkästen münden. Hierbei kann es sich um einen, insbesondere thermodynamisch hoch beanspruchten Ladeluftkühler handeln, der dazu geeignet ist, Innendrücke bis zu 2,0 bar, vorzugsweise bis 3,0 bar, insbesondere bis 3,05 bar und/ oder Temperaturen von bis zu 230° Celsius standzuhalten. Sich permanent verändernde Druckverhältnisse führen zu sogenannten Innendruckwechselimpulsen, die von der Befestigung aufgenommen werden müssen. Auch sich permanent verändernde Temperaturverhältnisse erfordern eine geeignete Befestigung des Wärmetauschers, um die sich auch hieraus ergebenden Längen- und/ oder Breitenveränderungen abzufangen.A heat exchanger according to the invention comprises two collecting tanks or collecting containers, between which a multiplicity of, preferably substantially parallel tubes, which open into the collecting tanks, extend. This may be a, in particular thermodynamically highly stressed intercooler, which is suitable for internal pressures up to 2.0 bar, preferably up to 3.0 bar, in particular up to 3.05 bar and / or temperatures of up to 230 ° Celsius withstand. Permanently changing pressure conditions lead to so-called internal pressure change pulses, which must be absorbed by the attachment. Even permanently changing temperature conditions require a suitable attachment of the heat exchanger to intercept the resulting length and / or width changes.
Der erfindungsgemäße Wärmetauscher weist daher wenigstens eine rastbare Befestigungseinrichtung zur Befestigung auf. Eine solche rastbare Befestigungseinrichtung ist Teil einer Clips- oder Schnappverbindung, die in ein entsprechendes Gegenstück bzw. eine entsprechende Aufnahme eingreift, wodurch eine formschfüssige Verbindung erzielt wird, die der Befestigung des Wärmetauschers dient. Damit kommt erstmalig eine solche Verbindung bzw. Befestigung für einen Wärmetauscher zum Einsatz, der unterhalb eines zweiten Wärmetauschers angeordnet ist. Selbstverständlich lässt sich jedoch eine solche Befestigung auch für thermodynamisch weniger beanspruchte Wärmetauscher verwenden, wie beispielsweise für einen Ölkühler.The heat exchanger according to the invention therefore has at least one latchable fastening device for fastening. Such a latchable fastening device is part of a clip or snap connection, which engages in a corresponding counterpart or a corresponding receptacle, whereby a formschfüssige connection is achieved, which serves to secure the heat exchanger. This is the first time such a connection or attachment for a heat exchanger is used, which is arranged below a second heat exchanger. Of course, however, such an attachment can also be used for thermodynamically less stressed heat exchangers, such as for an oil cooler.
Bei dem erfindungsgemäßen Wärmetauscher handelt es sich vorzugsweise um einen solchen mit großen baulichen Abmessungen, wobei insbesondere die Breite, d.h. der Abstand zwischen den Sammelkästen größer als 550 mm, bevorzugt größer als 700 mm und insbesondere größer als 730 mm ist. Ein solcher Wärmetauscher ist, wie eingangs erwähnt, starken Längen-und/oder Breitenveränderungen in Folge thermischer Schwankungen und Innendruckwechselimpulsen ausgesetzt. Aus dem Stand der Technik sind bislang keine befriedigenden Lösungen zur zuverlässigen Befestigung von Wärmetauschern mit im eingebauten Zustand stark wechselnden Längen-und Breitenveränderungen bekannt, welche insbesondere auch eine einfache Montage ermöglichen.The heat exchanger according to the invention is preferably one with a large structural dimensions, in particular the width, i. the distance between the collecting boxes is greater than 550 mm, preferably greater than 700 mm and in particular greater than 730 mm. Such a heat exchanger is, as mentioned above, exposed to strong changes in length and / or width as a result of thermal fluctuations and internal pressure change pulses. From the prior art are so far no satisfactory solutions for the reliable attachment of heat exchangers with strongly installed in the installed state length and width changes known, which allow in particular a simple installation.
Die Befestigungseinrichtung zur Befestigung des Wärmetauschers nach dem Patentanspruch 1 ermöglicht durch die rastbare Befestigungseinrichtung den Vorteil einer einfachen und schnellen Montage des Wärmetauschers in eine Baugruppe, ohne weitere Befestigungselemente wie beispielsweise einen Tragrahmen zu erfordern. Die Montage ist zudem leicht manuell oder auch maschinell durchführbar. Hierzu wird die rastbare Befestigungseinrichtung mit einem Gegenstück an der Baugruppe formschlüssig verbunden. Vorteilhafterweise lässt sich eine solche rastbare Verbindung bzw. Befestigung zur Demontage des Wärmetauschers auch wieder leicht lösen.The fastening device for fastening the heat exchanger according to
Bevorzugt ist wenigstens ein Sammelkasten des Wärmetauschers, vorteilhafterweise beide Sammelkästen, aus einem Kunststoffmaterial gebildet, wobei die Befestigungseinrichtung integral, d: h. einstückig, mit dem Sammelkasten ausgebildet ist. Ein solcher Sammelkasten kann beispielsweise als Kunststoff-Urformteil hergestellt sein. Eine derart angeformte Befestigungseinrichtung erweist sich als äußerst stabil und reduziert vorteilhafterweise den Montageaufwand.Preferably, at least one collecting box of the heat exchanger, advantageously both collecting boxes, formed of a plastic material, wherein the fastening means integral, d: h. in one piece, is formed with the collecting box. Such a collecting box can be made, for example, as a plastic molded part. Such a molded fastening device proves to be extremely stable and advantageously reduces installation costs.
Bevorzugt ist die Befestigungseinrichtung bezüglich einer Einbaulage des Wärmetauschers oben am Sammelkasten angeordnet. Vorteilhafterweise ergibt sich hieraus eine leichte Montage des Wärmetauschers. Weiterhin kann der insbesondere thermodynamisch hoch beanspruchte Wärmetauscher somit in einer quasi frei hängenden Einbaulage angeordnet werden, wodurch sich die Längen- und/ oder Breitenveränderungen in Folge der starken Temperaturschwankungen und Innendruckwechselimpulse hervorragend aufnehmen bzw. abfangen lassen.Preferably, the fastening device is arranged with respect to a mounting position of the heat exchanger at the top of the collecting box. Advantageously, this results in a simple assembly of the heat exchanger. Furthermore, the particular thermodynamically highly stressed heat exchanger can thus be arranged in a quasi-free mounting position, whereby the length and / or width changes due to the strong temperature fluctuations and internal pressure change pulses can absorb or intercept excellent.
Die Erfindung sieht vor, dass die Befestigungseinrichtung mehrere federnde Laschen umfasst, die flächenartig ausgebildet und im Wesentlichen flächenparallel und mit Zwischenraum beabstandet zueinander angeordnet sind. Die Befestigungskräfte verteilen sich hier vorteilhaft auf mehrere einzelne Befestigungselemente.The invention provides that the fastening device comprises a plurality of resilient tabs, which are formed like a surface and are arranged substantially parallel to each other and spaced from each other with space. The fastening forces are advantageously distributed over several individual fasteners.
Die Erfindung sieht ferner vor, dass zwei fehlende Laschen in der Befestigungseinrichtung vorgesehen sind, die flächenartig und im Wesentlichen flächenparallel und mit Zwischenraum beabstandet zueinander angeordnet sind. An ihren federnden, frei beweglichen Enden können diese federnden Laschen jeweils eine Rastnase bzw. Rastwulst aufweisen. Die beiden federnden Laschen sind bevorzugt derart ausgebildet, dass ihre federnden Enden beim Befestigen des Wärmetauschers aufeinander zu bewegt werden und so den Abstand verringern, und anschließend zur Herstellung einer formschlüssigen Verbindung aufgrund von elastischen Rückstellkräften wieder zurückfedern, wobei die Rastnasen in Rastnuten eingreifen, oder einen Vorsprung an der korrespondierenden Aufnahme des zweiten Wärmetauschers hintergreifen.The invention further provides that two missing tabs are provided in the fastening device, which are arranged areally and substantially parallel to the surface and spaced apart from each other. At their resilient, freely movable ends of these resilient tabs may each have a locking lug or locking bead. The two resilient tabs are preferably designed such that their resilient ends are moved towards each other during attachment of the heat exchanger and thus reduce the distance, and then spring back to produce a positive connection due to elastic restoring forces, wherein the locking lugs engage in locking grooves, or one Projecting tab on the corresponding receptacle of the second heat exchanger.
Es wird weiterhin vorgesehen, dass die Befestigungseinrichtung im Zwischenraum der beiden beabstandeten Laschen zwei Stützrippen aufweist, die im Wesentlichen parallel zu den federnden Laschen ausgebildet sind, und die dazu vorgesehen sind, während der Montage des Wärmetauschers als Eührungsflächen zu dienen und/oder die Rückstellkräfte beim Einrasten der Rastnasen zu erhöhen. Damit erhöhen sich auch die über die Befestigung übertragbaren Kräfte, weshalb eine derartig ausgebildete Befestigungseinrichtung insbesondere zur Befestigung eines thermodynamisch hoch beanspruchten Wärmetauschers geeignet ist.It is further provided that the fastening device in the space between the two spaced tabs two support ribs has, which are formed substantially parallel to the resilient tabs, and which are intended to serve during the assembly of the heat exchanger as Eduktionsflächen and / or to increase the restoring forces during engagement of the latching noses. This also increases the transferable via the attachment forces, which is why such a trained fastening device is particularly suitable for fastening a thermodynamically highly stressed heat exchanger.
Um die Befestigungseinrichtung ausreichend stabil zu dimensionieren (dies gilt insbesondere für einen thermodynamisch hoch beanspruchten Wärmetauscher mit den oben genannten Breitenabmessungen), ist in einer Ausführung vorgesehen, die federnden Laschen und/oder die Stützrippen mit einer Materialstärke von 2 bis 3 mm, bevorzugt von im Wesentlichen 2,5 mm auszubilden, wobei die federnde Länge der federnden Laschen bevorzugt zwischen 25 und 30 mm beträgt. Die federnde Länge reicht hierbei von der Anlenkung der federnden Lasche bis unter die Rastnase.In order to dimension the attachment sufficiently stable (this is especially true for a thermodynamically highly stressed heat exchanger with the above width dimensions), is provided in a design, the resilient tabs and / or the support ribs with a material thickness of 2 to 3 mm, preferably from in Essentially form 2.5 mm, wherein the resilient length of the resilient tabs preferably between 25 and 30 mm. The resilient length ranges from the articulation of the resilient tab to below the locking lug.
Eine bevorzugte Weiterbildung der Erfindung sieht vor, dass die Befestigungseinrichtung an einem der beiden Sammelkästen angeordnet ist, während an dem anderen Sammelkasten eine weitere Befestigungseinrichtung vorhanden ist, die als Stecknut, Langloch oder dergleichen ausgebildet ist. Hierdurch ergibt sich in vorteilhafter Weise eine Fest-Loslagerung des Wärmetauschers, wobei sich das Loslager auf Seite der Stecknut befindet. Insbesondere lassen sich somit in der bereits oben erwähnten hängenden Einbaulage Breitenänderungen des Wärmetauscher, d.h. Abstandsveränderungen zwischen den Sammelkästen, von der Loslagerung kompensieren. Hierzu greift ein korrespondierender Dorn oder dergleichen in die Stecknut ein.A preferred embodiment of the invention provides that the fastening device is arranged on one of the two header boxes, while at the other header box a further fastening device is provided, which is designed as a plug-in slot, slot or the like. This results in an advantageous manner a fixed-floating bearing of the heat exchanger, wherein the floating bearing is on the side of the plug-in groove. In particular, width changes of the heat exchanger, ie changes in the distance between the headers, can thus be compensated for by the loose mounting in the suspended mounting position already mentioned above. For this purpose, a corresponding mandrel or the like engages in the plug-in groove.
Ein Wärmetauschersystem gemäß der vorliegenden Erfindung umfasst einen vorstehend beschriebenen Wärmetauscher und wenigstens einen zweiten Wärmetauscher, wobei der erfindungsgemäße Wärmetauscher unterhalb des zweiten Wärmetauschers angeordnet ist und mittels einer Befestigungseinrichtung der oben beschriebenen Art an diesem, bevorzugt direkt, befestigt ist.A heat exchanger system according to the present invention comprises a heat exchanger described above and at least one second heat exchanger, wherein the heat exchanger according to the invention is arranged below the second heat exchanger and by means of a fastening device of the type described above, preferably directly attached thereto.
Bevorzugt handelt es sich bei dem.zweiten bzw. oberen Wärmetauscher um einen Kühlmittel/ Luft-Kühler, vorzugsweise gleicher Breite.Preferably, the second or upper heat exchanger is a coolant / air cooler, preferably the same width.
Für die Befestigung weist der zweite Wärmetauscher an seiner Unterseite ein zur Befestigungseinrichtung des erfindungsgemäßen Wärmetauschers korrespondierendes Gegenstück auf. Damit ist zusätzliches Montagematerial für die Befestigung nicht erforderlich.For attachment, the second heat exchanger has on its underside a corresponding to the fastening device of the heat exchanger according to the invention counterpart. Thus, additional mounting material for the attachment is not required.
Der Abstand zwischen beiden Wärmetauschern beträgt bevorzugt weniger als 10 mm.The distance between the two heat exchangers is preferably less than 10 mm.
Eine Weiterbildung dieses Wärmetauschersystems sieht eine oben beschriebene Los-Festlagerung vor, wozu an den zweiten Wärmetauscher zusätzlich ein zur Stecknut des erfindungsgemäßen Wärmetauschers korrespondierendes Gegenstück ausgebildet ist, wie beispielsweise ein Dorn.A further development of this heat exchanger system provides for a loose fixed bearing as described above, for which purpose a counterpart corresponding to the insertion groove of the heat exchanger according to the invention is additionally formed on the second heat exchanger, for example a mandrel.
Ein solcher Dorn ist erfindungsgemäß so ausgebildet, dass er im montierten Zustand von der im ersten Wärmetauscher ausgebildeten Stecknut aufgenommen ist. Dabei korrespondieren die Gestaltungen von Stecknut und Dorn bevorzugt in der Weise, dass der Dorn beim Montagevorgang in einer am Rand verbreiterten Öffnung aufgenommen wird, und dann beim Zusammenfügen der beiden Wärmetauscher in den inneren Bereich der Stecknut geführt wird. Dort ist der Dorn dann quer zu den Längsachsen der Wärmetauscher vergleichsweise eng geführt, um eine zuverlässige Befestigung zu gewährleisten.Such a mandrel is according to the invention designed so that it is received in the assembled state of the formed in the first heat exchanger plug-in. In this case, the designs of plug-in groove and mandrel preferably correspond in such a way that the mandrel is received during the assembly process in a widened at the edge opening, and then when joining the two heat exchangers in the inner region of the Plug groove is guided. There, the mandrel is then relatively narrowly guided transversely to the longitudinal axes of the heat exchanger to ensure reliable attachment.
In Längsrichtung des Wärmetauscher ist der Dorn vorzugsweise beweglich gehalten, um einen Längsausgleich der durch die thermodynamischen Beanspruchungen des ersten Wärmetauschers erforderlich wird, zu ermöglichen. Im Bereich des Dorns ist bevorzugt eine Feder ausgebildet, welche beim Montagevorgang zwischen den Wärmetauschern eingesetzt und belastet wird. Dadurch wird eine fester Halt zwischen den beiden Wärmetauschern erreicht, die beispielsweise Schwingungen und mechanische Stöße zwischen den Wärmetauschern aufnimmt.In the longitudinal direction of the heat exchanger, the mandrel is preferably kept movable in order to enable a longitudinal compensation, which is required by the thermodynamic stresses of the first heat exchanger. In the region of the mandrel, a spring is preferably formed, which is used and loaded during the assembly process between the heat exchangers. As a result, a firm hold between the two heat exchangers is achieved, which absorbs, for example, vibrations and mechanical shocks between the heat exchangers.
Vorteilhafterweise weist der zweite bzw. obere Wärmetauscher ebenso zwei Sammelkästen aus einem Kunststoffmaterial auf und hat die gleiche Breite wie der erfindungsgemäße Wärmetauscher. Diese Sammelkästen sind bevorzugt integral bzw. einstückig ausgebildet.Advantageously, the second or upper heat exchanger also has two header boxes made of a plastic material and has the same width as the heat exchanger according to the invention. These collection boxes are preferably formed integrally or in one piece.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezug auf die beiliegenden Figuren erläutert. Es zeigen:
- Fig. 1:
- eine perspektivische Ansicht eines linken Sammelkastens eines beispielhaften Ladeluftkühlers nach einer Ausführung der vorliegenden Erfindung;
- Fig. 2:
- eine Schnittansicht durch die Befestigungseinrichtung des linken Sammelkastens nach der
Fig. 1 ; - Fig. 3a:
- eine perspektivische Ansicht eines rechten Sammelkastens eines beispielhaften Ladeluftkühlers nach der Ausführung der vorliegenden Erfindung;
- Fig. 3b:
- eine Schnittansicht durch den Dorn des zweiten Wärmetauschers;
- Fig. 4a:
- eine schematische Darstellung der Montage des beispielhaften Ladeluftkühlers am zweiten Wärmetauscher;
- Fig.
- 5a: eine schematische Darstellung des Ladeluftkühlers und des zweiten Wärmetauschers im montierten Zustand; und'
- Fig. 5b:
- eine schematische Darstellung der Befestigung des linken Sammelkastens.
- Fig. 1:
- a perspective view of a left header tank of an exemplary intercooler according to an embodiment of the present invention;
- Fig. 2:
- a sectional view through the attachment means of the left header tank after the
Fig. 1 ; - Fig. 3a:
- a perspective view of a right collecting tank of an exemplary intercooler according to the embodiment of the present invention;
- 3b:
- a sectional view through the mandrel of the second heat exchanger;
- Fig. 4a:
- a schematic representation of the mounting of the exemplary intercooler on the second heat exchanger;
- FIG.
- 5a: a schematic representation of the intercooler and the second heat exchanger in the assembled state; and'
- Fig. 5b:
- a schematic representation of the attachment of the left collection box.
Bei dem hier beschriebenen Ausführungsbeispiel handelt es sich um einen thermodynamisch hoch beanspruchten Ladeluftkühler, der für wechselnde Innehdrücke bis zu 3,05 bar und schwankende Temperaturen des durchströmenden Mediums, im Ausführungsbeispiel Ladeluft, bis zu 230° C ausgelegt ist.In the embodiment described here is a thermodynamically highly stressed intercooler, which is designed for changing Innehdrücke up to 3.05 bar and fluctuating temperatures of the medium flowing through, in the exemplary embodiment charge air, up to 230 ° C.
Der linke Sammelkasten 10 (
Die Befestigungseinrichtung 12 ist als Clipsverbindung ausgelegt, wobei zur Befestigung ein korrespondierendes Gegenstück in einer, an der Unterseite des darüber befindlichen Kühlmitteikühlers, angeordneten Aufnahmeeinrichtung 41 vorgesehen ist. Unterhalb der Befestigungseinrichtung 12 ist eine Verbindungseinrichtung 42 ausgebildet, welche bei der Montage teilweise in der Aufnahmeeinrichtung 41 aufgenommen wird. Wie in den
Im Zwischenraum der beiden voneinander beabstandeten Laschen 14 und 16 sind zwei Stützrippen 18 und 19 angeordnet, die gleichfalls zueinander beabstandet und zueinander sowie zu den Laschen 14 und 16 im Wesentlichen flächenparallel sind. Die Stützrippen 18 und 19 weisen ausgehend von der Basis 13 im Wesentlichen gleiche Längen wie die Laschen 14 und 16 auf. Die Stützrippen 18 und 19 dienen einerseits zur Führung und andererseits zur Verbindung und zum Kräfteausgleich. Zusätzlich verstärken sie die Rückfederungskraft der Laschen 14 und 16 sowohl während der Montage als auch im montierten Zustand.In the intermediate space of the two spaced-apart
Sowohl die Laschen 14 und 16 als auch die beiden Stützrippen 18 und 19 weisen in dem gezeigten Ausführungsbeispiel eine Materialstärke von etwa 2,5 mm auf. Die Länge der Laschen 14 bzw. 16 beträgt, ausgehend von der Basis 13 bis zur Rastnase 15 bzw. 17, in etwa 25 - 30 mm, bevorzugt 27 mm. Hieran schließt sich die Länge einer Rastnase 15 bzw. 17 mit in etwa 5 mm an. Der Rastabsatz der Rastnase beträgt in etwa 3 mm. Die angegebenen Maße führen zu einer stabilen Befestigungseinrichtung 12, die den vorstehend erläuterten Beanspruchungen, insbesondere Kräften aus den Innendruckwechselimpulsen und thermischen Schwankungen, Gewichts- und Beschleunigungskräfte, sowie Vibrationen gerecht wird. Die Befestigungseinrichtung 12 sowie sämtlich hierzu gehörende und zuvor beschriebene Einzelteile sind integral bzw. einteilig mit dem linken Sammelkasten 10 ausgebildet. Zur Erhöhung der Federkraft können die Laschen 14 und 16, wie in
Der rechte Sammelkasten 20 (
In
Nachfolgend wird anhand der
Die
Anschließend erfolgt das Einrasten des Ladeluftkühlers 1 auf seiner linken Seite. Hierzu wird die Befestigungseinrichtung 12 am linken Sammelkasten 10 des Ladeluftkühlers 1 in die Aufnahmeeinrichtung 41 an der Unterseite des linken Sammelkasten 10 des Kühlmittel/Luft-Kühlers 3 eingerastet (symbolisiert durch den Bewegungspfeil in
Hierbei rasten die beiden federnden Laschen 14 und 16 der Befestigungseinrichtung 12 in die korrespondierende Aufnahme ein, wodurch eine formschlüssige Verbindung bzw. Befestigung erfolgt. Im Ergebnis ist somit, wie in
Im Rahmen der Erfindung ist es selbstverständlich auch möglich, die rastbare Befestigungseinrichtung an der Unterseite des darüber befindlichen Kühlmittelkühlers 3 (oder eines anderen zweiten Wärmetauschers) anzuordnen und am linken Sammelkasten 10 des Ladeluftkühlers eine hierzu korrespondierende Aufnahme vorzusehen. Auch lassen sich die Nut 22 und der Dorn 31 auf der rechten Seite vertauschen. Gleiches gilt für ein Umgruppieren aller oder auch nur einzelner Befestigungskomponenten zwischen der linken und der rechten Seite.In the context of the invention, it is of course also possible to arrange the latchable fastening device on the underside of the
Claims (9)
- Heat exchanger, especially intercooler (1), comprising two collection boxes (10, 20) and a plurality of tubes extending between the collection boxes, and at least one snap-in securing device (12) for securing underneath a second heat exchanger, wherein the snap-in securing device (12) is arranged on a collection box (10, 20), characterised in that the other collection box (20, 10) comprises a further securing device which comprises a groove (22) and that the further securing device comprises a groove (22) which comprises such a longitudinal extension that a fastening element can be received therein for longitudinal displacement and that the securing device (12) has several elastic flaps which are substantially spaced in parallel to one another, the securing device (12) has two elastic flaps (14, 16) on the respective ends of which a latching lug (15, 17) is formed and two supporting ribs (18, 19) are arranged in a space between the two spaced-apart flaps (14, 16) which are formed with a surface which is substantially parallel to the flaps (14, 16).
- Heat exchanger according to one of the preceding claims, characterised in that at least one collection box (10, 20) is made from a plastic material and the securing device (12) is integrally formed with this collection box (10, 20).
- Heat exchanger according to one of the preceding claims, characterised in that the securing device (12) is arranged on top of the collection box (10, 20) with regard to a mounting position of the heat exchanger.
- Heat exchanger according to claim 1, 2 or 3, characterised in that the elastic flaps (14, 16) and/or the supporting ribs (18, 19) have a wall thickness of 2 to 3 mm, preferably of substantially 2,5 mm, and/or the elastic length of the flaps (14, 16) is between 25 and 30 mm.
- Heat exchanger according to one of the preceding claims, characterised in that a connecting device (42) comprising a contact area (43) is arranged underneath the securing device (12).
- Heat exchanger according to one of the preceding claims, characterised in that the distance between the two collection boxes (10, 20) is more than 550 mm.
- Heat exchanger system, comprising a first heat exchanger (1) according to one of the preceding claims and at least one second heat exchanger (3), in particular a coolant cooler, wherein the first heat exchanger (1) is arranged underneath the second heat exchanger (2) and attached thereon.
- Heat exchanger system according to claim 7, characterised in that a pin (31) which is guided in a groove (22) enables a tolerance compensation between the two heat exchangers (1, 3).
- Heat exchanger system according to claim 7 or 8, characterised in that a spring (31) is arranged between the two heat exchangers (1, 3) which at least partially absorbs forces acting between the two heat exchangers (1, 3).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP08007269.7A EP2110632B1 (en) | 2008-04-14 | 2008-04-14 | Heat exchanger, in particular charged air cooler, with a latchable fixing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP08007269.7A EP2110632B1 (en) | 2008-04-14 | 2008-04-14 | Heat exchanger, in particular charged air cooler, with a latchable fixing device |
Publications (2)
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EP2110632A1 EP2110632A1 (en) | 2009-10-21 |
EP2110632B1 true EP2110632B1 (en) | 2015-12-02 |
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DE102011084307A1 (en) * | 2011-10-11 | 2013-04-11 | Behr Gmbh & Co. Kg | Radiator device and method for manufacturing a radiator device for a vehicle |
DE102013202146A1 (en) * | 2013-02-08 | 2014-08-14 | Behr Gmbh & Co. Kg | Radiator device i.e. cooling module, for vehicle e.g. passenger car, has snap connections whose elements are formed such that connections are generated between components, and input generated between components over one of connections |
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DE4425350A1 (en) * | 1994-07-18 | 1996-01-25 | Behr Gmbh & Co | Arrangement for connecting two or more heat exchangers |
DE29712351U1 (en) * | 1997-07-12 | 1997-09-11 | Behr GmbH & Co., 70469 Stuttgart | Heat exchanger arrangement with two heat exchangers |
DE19964455B4 (en) | 1999-11-09 | 2006-07-20 | Behr Gmbh & Co. Kg | Arrangement for the mutual connection of two heat exchangers |
WO2005073654A1 (en) * | 2004-01-29 | 2005-08-11 | Behr Gmbh & Co. Kg | Device for mutually fixing heat exchangers |
FR2871108B1 (en) | 2004-06-04 | 2007-11-02 | Peugeot Citroen Automobiles Sa | DEVICE FOR MOUNTING A FACADE BEFORE A MOTOR VEHICLE EQUIPPED IN PARTICULAR WITH A SUPER-AIR COOLING COOLER |
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