DE4137038C1 - Radiator case for front body of motor vehicle - has distance pieces, one elastic, to clamp flat tube heat exchanger between frame and collectors - Google Patents

Abstract

The radiator case (2) has a frame (4), which is for building into the vehicle. The frame encloses a flat tube heat exchanger (6), especially condenser, with collectors (8) on either side. It serves as holder for the heat exchanger. The exchanger is clamped via intermediate pieces (10) between the frame and the collectors. The intermediate pieces provide for tolerance compensation of the exchanger, relative to the frame, parallel to the extension direction of the flat tubes, of the collectors, and in height direction of the radiator case. ADVANTAGE - Permits use of thermoplastic material for frame construction, gives improved use of static characteristics of flat tube exchangers.

Description

The invention relates to a cooling cassette for Installation in the front of a motor vehicle with the features of Preamble of claim 1.

Such a cooling cassette is for passenger vehicles testify to the company Mercedes Benz AG in use. The framework con Structure is initially intended to follow the cooling cassette Install type of installation module and replace if necessary can. Usually the frame has a multi functional use other tasks. With the addressed The frame has a special construction from Mercedes Benz for sealing incoming ambient air outside the Frame in the front of the motor vehicle. Furthermore, are on the front Fastening points are provided for a fan. In the end the frame also serves to fasten the connections for the inner heat exchange medium of the flat tube heat exchanger.

The construction mentioned by Mercedes Benz is all metal design. The frame has a very stable bile self-construction and has retaining tongues that over the Um beginning of the frame are distributed only over an edge zone of the La protruding ribs and screwed through them are. This construction method is rather complex and uses also not the fact that the manifolds of the flat pipe condenser itself dimensionally stable and with all flat tubes are connected.

Forming a vehicle radiator as in a frame sliding cooling cassette is published in DE-OS 39 22 814.

DE-OS 38 43 306 already shows a flat tube condenser bilateral collectors for a refrigerant of a vehicle air conditioning system.  

It is already known per se (flat tube heat exchanger from Zexel, Japan), flat tube heat exchanger directly above tabs welded to their tubular collectors in the front building to assemble a motor vehicle. Then you have to go to the additional functions ver obtainable by means of the frame waive or these entirely by means of separate construction facilities or partially realize.

The invention has for its object one for the cooling cassette suitable for the continuous operation of a motor vehicle To be designed for installation in the front of a motor vehicle ten that, while maintaining a frame construction, the Flat tube heat exchangers have their own static properties more usable and especially the use of thermo plastic material as a frame material.

This task is performed on a cooling cassette with the Features of the preamble of claim 1 by the drawing features solved.

On the one hand, the cooling cassette does according to the Er the inherent stability of the flat tube heat exchanger peculiar that its static properties fully in the frame construction and therefore the mate  rial effort on the side of the legs of the frame minimal ge can be held. The inherent stability of the flat tube heat rope schers is not only due to the dimensional stability of the two Manifolds, but also by their bracing over the given the entire length of the ribbed flat tubes.

On the other hand, by bracing the flat tube heat exchanger in the frame selected an installation method, which at mi a minimum structural depth due to screwing can completely avoid. You can use the intermediate pieces thereby manufacturing dimensions of the frame and manufacturing dimensions of the Flat tube heat exchanger, which according to current regular practice are manufactured in different manufacturing facilities, in one Adjust the assembly method to each other. But also at Ferti supply of the flat tube heat exchanger and the frame in the same Manufacturing facility, the spacers offer the advantage with more precise shaping the force transmission between Select frame and flat tube heat exchanger function-specifically can and the shaping effort for any adjustment to be able to keep measures small. So you can regarding the Holding function of the frame in relation to the flat tube heat exchanger make the frame extremely simple and all related Assign shaping measures to the intermediate pieces. This is from of particular importance in the manufacture of frames in printing or injection molding, such as from thermoplastics, because then for the relatively large frame elements without slide structures can come. This is already for the production of refrigerated cassettes ten, for the installation in motor vehicles large series parts in the sense of mass items, of great importance. In the end can be assembled by the formation of the intermediate pieces of the flat tube heat exchanger in the collector on the various feet surfaces by appropriate design and local choice simple, if necessary with pre-assembly of the intermediate pieces on the flat tube heat exchanger.

A very important preferred further function of the Intermediate pieces is addressed in claims 2 to 4, näm Lich the possibility of manufacturing tolerances of the flat tube heat  metauschers in relation to the frame through tolerance compensating To be able to compensate for the design of the intermediate pieces. First The most significant in practice come here Length tolerances in the length direction of the flat tubes of the flat pipe heat exchanger in question. But also tolerances across the board, So in the direction of the collector axes and / or in the direction of Construction depth, ie the direction of flow in the motor vehicle flowing ambient air, have meaning.

The specialist has a variety of design options a tolerance-compensating training of the intermediate pieces while maintaining their clamping function between the Manifolds on one side and the legs of the frame on the other available. Claims 5 to 13, optionally in In connection with claims 14 to 25, give in this context preferred construction methods of the invention.

The following is particularly emphasized here, wherein the interpretation of the features of the other claims without further results from the exemplary embodiments:

In a tolerance compensation direction, it is often enough out, a single one in this direction between the collector and the adjacent leg of the frame intermediate Zwi length adjustable and to the specified tolerance train definable while each other in the same rich device switched on can be constant in length, but need not be.

You can also see the adaptability of the intermediate pieces Select and combine for tolerance compensation so that with The same intermediate piece tolerance compensation in several Compensating directions can be made.

As tolerance-compensating and the distance defining Active functions can be used on the one hand with resilient elements those that, depending on the tolerance condition, in different Ent tension can be clamped, or length or positional intermediate elements in which a certain setting po sition is then mechanically fixed. Is preferred in the frame the invention even the combination of such measures, namely  the use of spring force in at least one compensation direction and the setting of an adjustability by spring force in a perpendicular direction of compensation, where at the same time to the spring force of the first direction of compensation Definition of the setting in the second compensation direction can serve.

These training opportunities of intermediate pieces also enable a particularly simple manufacturing process the cooling cassette in such a way that you first heat the flat tube exchanger is still relatively loose within the frame in a twofold preassembled, then the connection with the on Finds and fastens end pieces and finally the final defines tolerance-compensating clamping in the frame. Man can bend the connecting pipes of the internal heat exchange Avoid all or most of the fluids if you pre-assemble so select the state that after the connection has been established only in the final clamping position at construction depths direction must be pressed into place.

When using resilient means for the Tolerance compensation can be both independent spring means, like clips, as well as elastomeric materials of the intermediate piece use yourself. With location-dependent adjustability of fixed Components of the intermediate elements are particularly suitable, the Form intermediate elements in several parts and the distance from to adjust at least two parts or the intermediate element towards the collector and / or one leg of the frame in Longitudinal adjustment and then in a certain position tion of the adjustment distance.

If the frame is not screwed into place you will sandwich the intermediate piece in particular brace the frame and the collector. But you can also do it think to embrace the frame and / or the collector. It is also possible, a recess in the area of the clamping surface, possibly even an opening to be provided in which Intermediate piece and frame or possibly also an approach of the collector loose and therefore without permanent deformation at ther  plastic materials are engaged. The recess can even be an opening into which an extension can snap into the undercut with an undercut; ge if necessary, the extension can be counteracted by clamping means the direction of insertion into the opening will. Such a type of fastening without screwing offers also look for intermediate pieces that do not tolerate have the same function, but only as spacers serve.

Within the scope of the invention, one is particularly preferred Construction method, in which a four-point suspension - in front preferably even only a four-point suspension - the flat tube liquefier is provided in the area of the four collector ends (Claim 14).

Here again one could think of the respective one Intermediate piece on the scope of the relevant collector end tighten or there - without affecting the clamping function compared to the frame - in a conventional way consolidate. Such constructions then come, for example in question if in the installed state of the flat tube condenser in Motor vehicle run the flat tubes in the vertical direction.

However, the flat tubes are usually horizontal placed so that the collectors run vertically. For this the case considered in particular then offers itself Teaching of claims 15 to 19, in which intermediate pieces End faces or end faces of the collectors to those in the axial direction the collector following the legs of the frame to continue. Here at result in no damage to the flat tube condenser ger particularly simple and reliable positive locking conditions between collector and intermediate piece. It can be the positive connection still has some residual mobility in the axis in any case, have direction if there are definitive deviations forces through tolerance-compensating means are provided.

Another advantage of the latter type of installation is also that in the axial direction of the collector in general  mean only very small tolerances occur and one in extension a reliable four-point Can ensure suspension. The tolerance-compensating Mit tel in the transverse direction, in particular in the direction of the longitudinal direction of the flat tubes, can therefore primarily on the compensation function and can only be designed as a secondary holding function.

The invention also includes the possibility of one Three-point suspension of the flat tube condenser in the frame, preferably by means of two end faces of the same collector (e.g. in the manner described) arranged intermediate pieces and one in the middle of the circumference of the other collector ordered third intermediate piece, the z. B. on the scope ge is stuck or in the case of its production from metal also on the collector can be screwed on and is only clamped against the frame.

The invention will now be described more schematically Drawings on several embodiments explained in more detail tert. Show it:

Figure 1 is a schematic plan view in the flow direction of ambient air in a motor vehicle on a cooling cassette according to the invention.

Fig. 2 with Fig 2a in section and in cross-section axially through a manifold and through the flat tubes, a first embodiment of the intermediate piece under installation conditions.

Fig. 2b in a sectional view according to Figure 2 a modified second embodiment.

Fig. 3 with Figures 3a and 3b, a third Ausfüh approximate shape in longitudinal and cross section through the collector and in a broken partial section ( Fig. 3b) in the depth direction.

Fig. 4 is a modified embodiment of this cross-sectional view of the collector;

Fig. 5 in the same incision, a fifth embodiment;

FIGS. 6 and 6a shows a sixth embodiment in cut through the axes of collectors and flat tubes and in Figure 6a in Bautiefenrichtung..;

Fig. 7 shows a seventh embodiment in partial section through the frame and plan view of an end face of the collector in the axial direction of the collector ( Fig. 7) and in the depth direction ( Fig. 7a);

Fig. 8 is a perspective exploded view of the arrangement of the third embodiment;

Fig. 8a is a broken perspective view of the assembly shown in Fig. 8;

Fig. 9 is a section through a horizontal center plane with a cooling cartridge according to the invention in multi-functional training; and

Fig. 10 shows a section through the cooling cassette with a view of a manifold of a flat pipe condenser arranged behind the section plane with the manifold parallel to this.

A cooling cassette 2 , which is intended for installation in the front section of a motor vehicle, has a rectangular frame 4 which each has two parallel legs 3 .

The limited by the legs 3 of the frame 4 In nenraum is essentially taken up by a flat tube heat exchanger 6 , which is preferably a flat tube condenser. This has two mutually parallel collectors 8 , which extend parallel to the short legs 3 of the elongated rectangular frame 4 . The collectors communicate with mutually parallel flat tubes 50 , which are provided with a common fin rib 72 . The long axis of the cross section of the respective flat tube 50 runs in the direction of the overall depth of the flat tube heat exchanger 6 , that is to say in the illustration in FIG. 1, perpendicular to the plane of the drawing. The one collector 8 is divided by an inner partition, not shown, into at least two departments, one department entering a tubular inlet 74 and the other department entering a tubular outlet 76 for one of the inlet-side department through the flat tubes connected to this department to the other collector and from this through the connected to the other department NEN flat tubes to the outlet 76 internal heat exchange fluid is connected. Inlet 74 and outlet 76 open into a connector 66 for further lines. At the connection piece 66 is carried by the adjacent leg of the frame 4 via a bracket 80 formed on this leg. The pipelines passed through the relevant leg from inlet 74 and outlet 76 are sealed in through openings by means of ring-shaped or sleeve-shaped seals 78 .

The collector 8 can have any known design and z. B. be formed in one or more parts in the circumferential direction. In any case, they represent a closed and therefore very dimensionally stable profile, which expediently consists of aluminum or an aluminum alloy, like the flat tubes 50 , their finned ribs 72 , inlet 74 and outlet 76 and the connecting piece 66 . AlMn1 is particularly suitable as an aluminum alloy.

The frame 4 is expediently an integral injection-molded piece made of a thermoplastic material, the legs 3 for the material and weight saving while maintaining stability are double-walled with transverse ribs to create the honeycomb structure 82 shown in FIG. 1.

In addition to the bracket 80 , brackets 68 are formed on the frame at its two upper corner areas, each with egg nem horizontally extending slot 69 and in the lower area on the outside of the two vertically extending legs 3 lower brackets 70 with receiving bolts 71 projecting downward.

As can also be seen from FIG. 9, the frame 4 can accommodate or form additional components in the sense of a multifunctional design.

During the Flachrohrverflüssiger since largely fills 6 of FIG. 1 in a cross sectional area of the frame 4 from, in an axial air side downstream region, two further heat exchanger 52, advantageously also flat tube heat exchangers are arranged which divide in axial nachge arranged area concerned of the frame.

Accordingly, you can also in the same cross section area only a single heat exchanger or even more than Arrange two or, if necessary, at least one more Heat exchanger still in a third cross-sectional area hen etc.

In the direction of the motor vehicle, a circumferential receptacle 62 for a circumferential seal 64 against subsequent components is also formed behind the receiving area for the heat exchangers 6 and 52 . This seal can also be formed on the frame men 4 , such as the frame in the peripheral region constitutes an environmental seal 58 .

On the air inlet side, the frame 4 tapers via an air inlet-side guide for the incoming ambient air to an inlet nozzle 61 , which is taken up by the wing of a fan driven by a central electric motor 55 . The electric motor 55 is in turn held by a fan holder 56 which is circumferentially attached to the inside of the air duct 60 at fastening points 59 which are designed to be as clamping as possible.

The flat tube heat exchanger 6 is clamped in the frame 4 via intermediate pieces 10 between the two collectors 8 and the frame 4 . The intermediate pieces 10 summarize the various intermediate pieces 10 a to 10 g which are specifically described below.

Appropriately, the depth of the flat tube heat exchanger 6 together with its ribbing 72 of the flat tubes 50 and its collector 8 is approximately equal to the depth of the frame 4 , unless a greater depth due to the multifunctional further design of the frame according to FIG. 9 is required. The depth of the intermediate pieces 10 is adapted to this common construction depth or equal to this.

Fig. 1 illustrates a preferred suspension shows the flat tube heat exchanger 2 in the frame 4 over four spacers 10 in the manner of a four-point suspension, whereby all four intermediate pieces 10 in the region of the four collector ends 20 face these are pressed each other, and further intermediate pieces are not pre- are seen. This does not preclude the fact that at least one additional intermediate piece 10 is provided around the circumference of the collector 8 to create a more than four-point suspension, for. B. a six-point suspension with a further intermediate piece in the center of each collector 8th

Specifically, the embodiment of Figure is expedient SSIG realized thereby. 1 in that the two upper spacers 10 10 a of Fig. 3 and the two un direct intermediate pieces 10 on the nature of the intermediate pieces 10 d of FIG on the nature of the intermediate pieces. Embodied 3 and 3a, and are arranged.

Referring to FIGS. 3 and 3a, the intermediate pieces 10 a and 10 d pressed frontally to the collector ends 20.

The intermediate pieces 10 , 10 c, 10 d, 10 f and 10 g of FIGS . 3, 3a and 3b and 4 to 6 are each formed with a core 24 , which engages in a free inner cross section of the collector end 2 . Furthermore, they have a jacket part 26 which encompasses the circumference of the collector end 20 . The arrangement is such that the collector sheath 18 between the core 24 and the cladding part is pressed 26th In all the above-mentioned embodiments, scraper ribs 28 are also distributed over the circumference at the core 24, which compensate for tolerances. Fig. 4 shows a conceivable modification in all the above-mentioned embodiments, in which further scraping ribs 28 are distributed over the inner circumference of the jacket part 26 on the intermediate pieces 10 f.

Without restricting the generality, it is also shown with the aid of the intermediate pieces 10 d in FIG. 3 that the core 24 lies against the end cap 30 of the collector end. Likewise, the base 32 of the intermediate piece 10 d at the end edge 22 of the collector jacket 18 at the same time, so that the axial support of the intermediate piece 10 d is distributed over the entire cross-sectional area of the collector 8 .

The arrangement according to FIGS . 3, 3a and 3b can also be understood in the spatial arrangement with reference to FIGS . 8 and 8a, which relate to the same intermediate pieces 10 a and 10 d.

The intermediate pieces 10 d according to FIGS . 3a and 3b only have tolerance-compensating effects parallel to their adjacent leg, that is to say in the axial direction of the flat tubes 50 . The intermediate pieces 10 a have the same adjustment function and in combination therewith additionally an adjustment function compensating for tolerances in the axial direction of the collectors 8 .

For this purpose, the intermediate piece 10 a two in the direction of the adjacent leg 3 of the frame 4 spring elements 44 which are integrally formed clip-shaped integrally in the material of the intermediate piece 10 a and axially spring in the direction of the axis of the collector 8 . The spring elements 44 run out in paw-like end pieces 43 , which are held in a positive manner in the adjacent surfaces 34 between the paw-shaped end pieces 43 on the one hand and the inner surface of the adjacent leg 3 on the other hand by means of latching teeth 16 on both sides. The holding engagement is effected by the spring force of the two spring elements 44 . The same spring force of the intermediate piece 10 a also causes an engagement in a corresponding double-sided locking toothing 16 , which is provided between the axially outer end face of the intermediate piece 10 d and a continuous internal toothing of the leg 3 along the leg. In the case of the intermediate piece 10 a, the split internal toothing of the leg shown in FIG. 3 is sufficient to be able to accommodate the tolerances.

The tolerance-compensating adjustability of the inter mediate pieces 10 a and 10 d along the respective adjacent legs 3 for compensating for differences in length of the flat tubes 50 takes place by different setting of the location of the engagement of the double-sided toothing 16 along the associated leg 3 with determination of that respective Federele element 44 . The assembly can take place in that, according to FIG. 10, the desired adjustment of the mutual toothing 16 compensating for tolerances is already set before the flat tube heat exchanger 6 together with the intermediate pieces 10 a and 10 d is inserted into the mutual toothing 16 . In this arrangement shown in FIG. 10, a tongue and groove connection 84 , 86 between the holder 80 for the connector 66 is just out of engagement. In this position, a projection 36, which may be in accordance with a two-part Figs. 3B and 10, but need not be in two parts, just in front of a slot-like opening 40 is advantageous in that the subsequent fixation of the intermediate pieces 10 a and 10 d in depths direction serves and in a modification (not shown) can also be formed as a sack-like recess in the leg 3 (cf. the additional reference number 38 assigned to reference number 40 in FIG. 10).

The extension 36 has at its end an undercut 42 , which, according to FIG. 3b in the constructional depth direction, snaps into position and thereby holds the outer side of the leg 3 overlapping.

The elongated hole extension of the opening 40 takes place in the direction of the adjustment possibility of the mutual toothing 16 . Referring to FIG. 10, the assembly is carried out such that firstly the tongue and groove 84 is brought into engagement, the intermediate pieces 10 a and 10 d in the proper position of their mutual toothing 16 to be inserted and finally the final latching position with the handle of the Hin intersections 42 is reached behind the leg 3 .

Suitably Fig intermediate piece is in accordance. 5 10 a and the intermediate piece 10 d so modified that the entspre sponding intermediate piece 10 g in Bautiefenrichtung with an additional spring element 45 is formed, which terschneidung the Hin 42 chung opposite to the insertion into the Durchbre 40 by resting on the inner surface of the leg 3 in question on the frame 4 .

The spring elements 44 can also be replaced by an (at least) two-part design of the respective intermediate piece, as shown with the aid of the intermediate pieces 10 c according to FIGS. 6 and 6 a. For this purpose, the two parts 12 and 14 have a further mutual toothing 17 along a Keilflä surface between the two parts 12 and 14 , on which a tolerance compensation can be made in the same direction of action, as in Fig. 3 utilizing the spring force of the Federele element 44th happens. The axial length adjustment is done by different engagement position along the wedge surface. A disintegration of this engagement is ensured by lateral holding arms 19 , which are arranged here on the internal component 12 , but could alternatively also be formed on the other component 14 . The tolerance-compensating definition of the setting selected on the wedge surface, it follows that the wedge surfaces between the two opposite legs 3 are pressed and at the same time bring the mutual toothing 16 into tensioned engagement.

While in the previously described intermediate pieces, a spring force is generated in the manner of the intermediate pieces 10 a by spring elements 44 molded onto them, the intermediate pieces can also be resiliently compliant in the manner of the intermediate pieces 10 b of FIGS. 2, 2a and 2b made of elastomeric material manufacture and then dispense with separate spring elements.

It is in turn a pressed onto an end face 22 at the collector end 20 intermediate piece 10 b, which in turn has a core part and a man telteil according to FIG. 2a and encompasses both the collector jacket 18 and the core part on the end cap 30 of the collector is applied, the end face 22 of the collector in turn resting on the bottom between the core part and the outer part.

On the circumference of the intermediate piece 10 b, two arms 48 are formed, which have a different spring constant transversely to the axis of the intermediate piece than the intermediate piece has in its axial direction. The arms 48 are held in a receptacle 47 resiliently. In the embodiment according to FIG. 2b, this receptacle has a circumferential profile which is integrally formed with the frame 4 or a leg 3 of the same. Instead, according to FIG. 2, the receiving pot 47 can also be a separate component which can be snapped into a surrounding box profile 49 of the leg 3 on the frame in the construction direction. For this purpose, the wall of the receptacle has two projections provided with undercuts 41 , which engage in two openings 39 on the leg 3 of the frame 4 in a snap-in manner.

FIGS. 7 and 7a, finally, show based on four non-elastomeric material existing between pieces 10 e, but which could also be made of elastomeric material, the possibility that the intermediate pieces 10 e can be clamped on the end face of a collector on the periphery thereof also takes .

The fixing of the intermediate pieces 10 e on the leg 3 of the frame 4 in turn via the mutual toothing 16 , which was described earlier on the intermediate pieces 10 and 10 d.

Otherwise, the intermediate pieces 10 e are resilient to flexible arms 51 , which engage radially resiliently around the outer surface of the collector 8 and also partially engage behind it. In this case, a central receiving slot 53 is cut out in the arm 51 in the manner of an elongated groove, each of which can accommodate flat tubes 50 on its narrow side. A rough adjustment can be made in each case over the grid spacing of the flat tubes 50 , while the fine adjustment takes place via the mutual locking 16 of the intermediate piece 10 e and leg 3 of the frame 4 .

Claims (30)

1. Cooling cassette ( 2 ) for installation in the front of a motor vehicle with a built-in in the motor vehicle frame ( 4 ), which with a collector on both sides ( 8 ) provided flat tube heat exchanger ( 6 ), in particular flat tube condenser, encloses and serves as a holder for this flat tube heat exchanger characterized in that the flat tube heat exchanger ( 6 ) is clamped in the frame ( 4 ) via intermediate pieces ( 10 ) between the two collectors ( 8 ) and the frame ( 4 ). 2. Cooling cassette ( 2 ) according to claim 1, characterized in that on the intermediate pieces ( 10 ) a Tolerausaus equal to the flat tube condenser ( 6 ) with respect to the frame ( 4 ) parallel to the direction of extension of the flat tubes ( 50 ) is seen before. 3. Cooling cassette ( 2 ) according to claim 1 or 2, characterized in that on the intermediate pieces ( 10 ) a tolerance compensation of the flat tube condenser ( 6 ) in relation to the frame men ( 4 ) parallel to the direction of extension of the collector ( 8 ) seen before is. 4. Cooling cassette ( 2 ) according to one or more of the Ansprü che 1 to 3, characterized in that a tolerance compensation of the flat tube condenser ( 6 ) in the depth direction of the cooling cassette ( 2 ) is provided via the intermediate pieces ( 10 ). 5. Cooling cassette ( 2 ) according to at least one of claims 2 to 4, characterized in that for the tolerance compensation at least one intermediate piece ( 10 ) is elastic-elastic in the compensation direction. 6. Cooling cassette ( 2 ) according to claim 5, characterized in that the intermediate piece ( 10 ) consists of elastomeric material. 7. Cooling cassette ( 2 ) according to claim 5 or 6, characterized in that the intermediate piece ( 10 a) contains an effective in the compensating direction spring element. 8. Cooling cassette ( 2 ) according to one of claims 5 to 7, characterized in that the intermediate piece ( 10 b) is formed in at least two different compensation directions differently ela-elastic. 9. Cooling cassette ( 2 ) according to at least one of claims 2 to 8, characterized in that for tolerance compensation at least one intermediate piece ( 10 c) is formed at least in two parts with adjustability along the distance between the two parts ( 12 , 14 ). 10. Cooling cassette ( 2 ) according to at least one of claims 2 to 9, characterized in that at least one intermediate piece ( 10 d) in the compensating direction along one leg of the frame ( 4 ) on this is adjustable and lockable. 11. Cooling cassette ( 2 ) according to at least one of claims 2 to 10, characterized in that at least one inter mediate piece ( 10 e) in the compensating direction along both collectors ( 8 ) on these is adjustable and lockable. 12. Cooling cassette ( 2 ) according to claim 10 or 11, characterized in that a toothing on both sides ( 16 ) is provided for the determination. 13. Cooling cassette ( 2 ) according to one of claims 1 to 12, characterized in that between the periphery of a collector ( 8 ) and the parallel leg ( 3 ) of the frame ( 4 ) interposed intermediate pieces ( 10 ) on the collector ( 8 ) under clamping gripping his collector jacket ( 18 ) are attached. 14. Cooling cassette ( 2 ) according to one of claims 1 to 13, characterized in that the intermediate pieces ( 10 ) in the region of the four collector ends ( 20 ), preferably only there, are arranged. 15. Cooling cassette ( 2 ) according to claim 13 or 14, characterized in that an intermediate piece ( 10 ) between the four end faces ( 22 ) of the two collectors ( 8 ) and the parallel to the flat tubes ( 50 ) extending legs ( 3 ) of the Frame ( 4 ) is arranged. 16. Cooling cassette ( 2 ) according to claim 15, characterized in that the intermediate pieces ( 10 ) on the collector ends ( 20 ) are pressed on the end face. 17. Cooling cassette ( 2 ) according to claim 16, characterized in that the intermediate piece ( 10 a, 10 c, 10 d, 10 f, 10 g) engages with a core ( 24 ) in a free inner cross section of the collector end ( 20 ) and with a jacket part ( 26 ) encompasses the circumference of the collector end ( 20 ) and that the collector jacket ( 18 ) between the core ( 24 ) and the jacket part ( 26 ) is pressed. 18. Cooling cassette ( 2 ) according to claim 17, characterized in that on the core ( 24 ) and / or on the casing part ( 26 ) Toleran zen compensating scraper ribs ( 28 ) are distributed over the circumference. 19. Cooling cassette ( 2 ) according to claim 18, characterized in that both the core ( 24 ) of the intermediate piece ( 10 d) on the end cap ( 30 ) of the collector end ( 20 ) and the base ( 32 ) of the intermediate piece ( 10 d ) rest on the front edge ( 22 ) of the collector jacket ( 18 ). 20. Cooling cassette ( 2 ) according to one of claims 1 to 19, characterized in that intermediate pieces ( 10 ) on a leg of the frame ( 4 ) by positive locking between abutting adjacent surfaces ( 34 ) of the intermediate piece ( 10 ) and leg of Frame ( 4 ) are held. 21, cooling cartridge (2) according to claim 20 and one of At claims 15 to 19, characterized in that the in each case to a collector end (20) frontally pressed-on spacer (10) on the frame (4) in a direction of the limb of the frame (4) the locking teeth ( 16 ) and in the right-angled leg angle of the frame by bracing, preferably according to one of claims 5 to 8, is held. 22, cooling cartridge (2) according to any one of claims 1 to 21, characterized in that intermediate pieces (10) at one's of the frame angle by engagement of an extension (36) of the interim rule piece (10) in a recess (38) on the legs of the Rah mens ( 4 ) are held. 23. Cooling cassette ( 2 ) according to claim 22, characterized in that the recess ( 38 ) is an opening ( 40 ) of the leg, the continuation of the intermediate piece ( 10 ) protrudes through the opening ( 40 ) and can be locked with an undercut ( 42 ) is. 24. Cooling cassette ( 2 ) according to claim 23 and at least claim 4, characterized in that the extension ( 36 ) of the intermediate piece ( 10 ) in the opening of the leg ( 40 ) of the frame ( 4 ) has axial play and after snapping into place Verra stungsstellung its undercut ( 42 ) by a between the leg of the frame ( 4 ) and the intermediate piece ( 10 ) effa mes spring element ( 44 ), which is preferably attached to the intermediate piece ( 10 ), is tensioned. 25. Cooling cassette ( 2 ) according to one of claims 1 to 24, characterized in that the frame ( 4 ) is designed so resiliently that it takes over at least part of the tolerance compensation. 26. Cooling cassette ( 2 ) according to one of claims 1 to 25, characterized in that the frame ( 4 ) consists of thermoplastic plastic. 27. Cooling cassette ( 2 ) according to one of claims 1 to 26, characterized in that the frame ( 4 ) is multifunctional for holding at least one further heat exchanger ( 52 ) and / or at least one fan ( 54 ). 28. Cooling cassette ( 2 ) according to at least one of claims 1 to 27, characterized in that the frame ( 4 ) is formed with an environmental seal ( 58 ) and as an air inlet-side guide ( 60 ) of the ambient air serving as cooling air. 29. Cooling cassette ( 2 ) according to one of claims 1 to 27, characterized in that the frame ( 4 ) with a receptacle ( 62 ) for air outlet-side seals ( 64 ) is formed opposite to closing components. 30. Cooling cassette ( 2 ) according to one of claims 1 to 29, characterized in that the connecting pieces ( 66 ) of the respective heat exchanger ( 6 , 52 ) for the internal heat exchange fluid are held on the frame ( 4 ).