DE3403001A1 - Heat exchanger - Google Patents

Abstract

A heat exchanger, in particular a charge air cooler, is proposed which has two lateral parts that are arranged at a distance from one another and are extruded profile sections. Arranged between the lateral parts are the tubes, which conduct a heat exchange medium, for example water, and transverse fins which are transversely penetrated by said tubes and on which a different heat exchanging medium, for example charge air, is applied. The tubes are firmly anchored at both ends in the tube plates, on which a box-like cover is mounted. Each lateral part has in the region of the free end faces a bead-like strip in which there is contained a continuous, groove-shaped receptacle having a @cross-section. Contained in the receptacle is a congruent engaging part which carries at both ends mounting bolts which penetrate the tube plate and cover at both ends and onto which the nuts for clamping together are screwed. The engaging parts contain threaded bores in which mounting screws which penetrate through the slot of the @profile engage for the purpose of mounting the heat exchanger on housing walls or mounting housing walls on the heat exchanger. The extruded profile sections of the lateral parts reduce production costs, the use of material and weight in a substantial fashion.

Description

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Patent attorney Mülbergerstrasse 65 - "- *". "* - Authorized representative at Dipl.-Ing. Volkhard Kratzsch D-7300 Esslingerr "European counterfeit 'patent office P.O. Box 90 Telephone Stuttgart (0711) 317000 Deutsche Bank Esslingen 210906 cable «krapatent» esslingenneckar Post office Stuttgart 10004-701

Radiator factory January 24, 1984

Längerer & Reich GmbH & Co. KG

7024 Filderstadt 1 lawyer file 3715

Heat exchanger

The invention relates to a heat exchanger, in particular Charge air cooler of the type mentioned in the preamble of claim 1.

In a known heat exchanger of this type, the two side parts are each designed as cast parts, which are all around have a flange-like edge protruding beyond the broad-sided outer surface of the wall and also on the Broad side of the wall are provided with ribs serving for stiffening. In the area of the end faces on which the tube sheets are attached, special threaded holes are incorporated in each case for fastening the tube sheet. The tube sheet are provided with countersunk holes through which countersunk screws engage in the threaded holes in the side panels. These Recessed fastening of the tube sheets at both ends of the side parts is covered by the cover. The lids themselves are by means of their own fastening screws, which are in threaded holes engage the tube sheets, attached to the latter. The free end faces on one side of the side panels serve to attach the heat exchanger to any counter surface, e.g. to a motor housing wall or the like The free end faces of the side parts provided on the opposite free side of the heat exchanger are used to

that there e.g. the air scoop of a charge air line is attached and is attached. Both attachments are made with a seal in between. To this end are the flange edges of the side parts carrying the mentioned free end faces are provided with special bores, which are reinforced by the material's own eyes. The holes each contain threads.

A heat exchanger of the known type described is relatively expensive. The side parts designed as cast parts require high manufacturing costs. On the one hand, one has to work for different lengths of heat exchangers and thus for Manufacture of side parts of different lengths. Make cast models of different lengths and keep them ready.

On the other hand, every cast part that is manufactured requires the complex machining. If the free end faces are not designed precisely and flat during casting extensive post-processing is required here, depending on the case, there is also one for dimensional accuracy in terms of length and width. It also requires the attachment of a Large number of individual bores in the flange edges of the side parts, in these bores at least for predominantly thread must be cut. This design therefore leads to relative in terms of the side panels large use of material, relatively large weight and large model costs for differently sized side parts and also to quite high manufacturing costs for the machining of the side parts.

The invention is based on the object of providing a heat exchanger of the type mentioned in the preamble of claim 1 to create that is inexpensive, quick and easy assembly from the individual elements mentioned allows and for this purpose particularly simple fastening means needs, while at the same time the prerequisites for a particularly simple, inexpensive, material and

weight-saving production of the side parts are created.

The object is in a heat exchanger of the type mentioned in the preamble of claim 1 according to the invention solved by the features in the characterizing part of claim 1.

Due to the recordings in the side parts and the engaging parts inserted therein, which are held in a tension-secured manner Fasteners are cost and effort, in particular Assembly effort, significantly reduced for assembly. It can be attached to all four corner areas according to the tie rod principle corresponding fastening links for each side part place and on it at least the tube sheet, expediently in addition, put on the lid, and then clamp it tightly by means of associated elements, so that the entire unit consisting of the individual parts mentioned can be quickly assembled and can be easily fixed and assembled to one another. Especially flange edges on the sides of the side panels on which the Tubesheet are placed, including bores to be made and / or threaded holes are dispensable. With regard to the side parts, this leads to a corresponding saving in material and weight as well Reduction in manufacturing costs. Also 'are fewer fasteners necessary because there are four fastening links at each end to clamp all the individual elements together of the heat exchanger are sufficient.

A wide variety of fasteners, e.g. rods, straps, clamps, hooks or the like, can be considered. Particularly simple is the implementation according to the features of claims 2-4.

Even if it can be sufficient, by means of the fastening members on both sides of the side parts only to clamp the tube sheet together and to this the geckel by means to attach your own screws, recesses are to be provided in the .Eckbereich the cover so that you can access the Fasteners and associated elements come up, In contrast, a solution according to claim 5 is much more advantageous, because it not only reduces the tube sheet, but also the lid with the side panels and the heat exchanger network can be clamped together therebetween.

Another advantageous embodiment results from Claim 6 and claim 7. This in conjunction with the features of claims 1 to 5 creates the prerequisites for the respective side parts in a particularly cost-effective way as long parts, e.g. made of sheet metal by the meter, or in particular as profiled long parts

to be able to.
20th

One way of securing the fastening links in a tension-protected manner in the recordings results from claim 8. Then there are four such fastening members per side part with their head-like engaging part in the receptacle in To be placed in the corner area and in the transverse direction for safety secure against being pushed in or pulled out by means of the respective cross bar. The advantage here is that freedom of movement in the manufacture and design of the side part, e.g. made of sheet metal or as an extruded profile, is reached. Another advantageous embodiment contains claim 9. The two end sides Fastening members common engagement part acting as tie rods reduces manufacturing and assembly costs. For example, it is relatively cheap as a machine part. Thereby 35

certain standardized sizes can be produced, which are used when putting together differently sized heat exchangers can use. This reduces the number to

Individual parts of different sizes to be kept in stock or to be produced separately. There is also a here Side part in the form of an extruded profile advantageous.

It can also be advantageous if the engagement part on the one hand and the fastening links on both sides, e.g. fastening bolts, on the other hand, have the same cross-section are. This element can then be obtained from the bar material as required by simply cutting it to length.

Further advantageous features are contained in the claim. In the case of a non-integral design of the engagement part on the one hand and fastening link, e.g. fastening bolts, on the other hand, the engagement parts can also be called Obtain bar material in the desired length by cutting to length and then simply e.g. also for all types of heat exchangers use fastening bolts of the same length and attach to them.

ι Al

A particularly advantageous, independently inventive one further design results from claim 11, to the advantageous one Further developments in claims 12-14 are included.

By designing the two side parts as extruded profile sections, a further reduction in weight and material expenditure and, in particular, production costs, as far as the side parts are concerned, is achieved. The side parts can be obtained from an extruded profile of any length in the desired length in each individual case by cutting to length. In this way, heat exchangers of different lengths can also be put together in a particularly simple manner, since by simply cutting them to length, the extruded profile sections of correspondingly different lengths can be taken into account; To form the side panels is therefore only one step, namely the cutting _o f the required length in the production necessary because otherwise the side panels in the form of extruded profile made dimensionally stable and can be ready-used without requiring any other processing. Special, in particular differently dimensioned cast models, as they were otherwise necessary for execution as cast parts, are omitted, with all the advantages resulting therefrom. Above all, the manufacturing costs are significantly reduced. The recordings for the lateral engagement parts are made in the same way as the extrusion

production through simultaneous molding with won, therefore do not require any additional effort. Both the design as a hollow body can be done without much additional effort as well as one made of solid material according to claim 13 possible, as well as at the same time without additional costs further fasteners on the side parts are also molded in during the extrusion process can. In conjunction with the features of the invention described above, this results in a particularly simple one

IQ only a few parts to be processed heat exchanger, which can be assembled from standardized individual elements without major modifications for different sizes, whereby different length dimensions can be met by simply cutting to length, especially with regard to the otherwise relatively complicated and expensive side parts.

An alternative embodiment results from the claim 15. Such a design of the side parts as shaped sheet metal parts, which are also from a sheet metal profile from the current Meters are cut off to length if necessary, is also within the scope of the invention.

Further advantageous measures emerge from the claims 16 and 17. In this way, while maintaining the advantages explained above, relatively wide connection and contact surfaces are created in order to be able to attach the heat exchanger to an engine housing wall and / or to an air scoop on the heat exchanger, for example _{be able to} attach to the connection of a charge air line. At the same time, through these measures, edge stiffening of the side parts is achieved, which can thus be designed to be dimensionally stable while retaining all the advantages, even with a small amount of material and low weight.

A further, independently inventive measure results from claim 1ß, to which advantageous developments are contained in claims 19-21. As a result, the holding means on the heat exchanger side are integrated in a particularly simple manner as part of the fastening means that are required for fastening the heat exchanger, for example, to a housing wall and / or for fastening parts to the heat exchanger. It is understood that the abutments ^en threaded in the form of threaded bore or projecting threaded bolts are provided, can be formed as a separate, form-fitting eingesetzte.Einzelteile into the receptacles substantially forming independent elements and within the receptacles in Longitudinal distance from the other engagement parts with their fastening bolts are placed at the point where they are needed to make the fastening. Such individual abutments can be designed, for example, as flat pieces provided with threaded holes. In contrast, the measure evident from claim 21 is more advantageous, according to which the holding means are fused with the engagement parts contained in the respective receptacles to form one element, or, viewed differently, the engagement parts contained in the receptacles simultaneously function as holding means by opening the threaded holes or, as a kinematic reversal, which wear threaded bolts protruding therefrom. In this way, these heat exchanger-side holding means for the fastening mentioned are obtained in a particularly cost-effective and simple manner.

A particularly advantageous combination solution results even if the features in claims 1, 11 and 18 are merged.

Further details and advantages emerge from the following description.

The full text of the claims is above not reproduced solely to avoid unnecessary repetition, but instead by naming the claim number is referred to, whereby all of these claim features are expressly stated at this point and are essential to the invention.

The invention is based on one in the drawing illustrated embodiment explained in more detail. the The drawing shows a perspective, partially sectioned view of a heat exchanger.

The heat exchanger 10 shown here consists of a charge air cooler for turbo-charged internal combustion engines.

It has one arranged between two tube sheets 12, 13 Heat exchanger network 11, which consists of individual, mutually parallel tubes 14 and is formed from packet-like arranged, transverse ribs 15, which leaving passage spaces lie next to one another in between and are penetrated transversely by the tubes 14. The tubes 14 are at the end in the Tube sheets 12 and 13 anchored firmly and tightly. On the side facing away from the tubes 14 of each tube sheet 12, 13 is a associated cover 16, 18 with its circumferential edge 17 and 19 placed tightly. On two opposite one another Sides of the heat exchanger network 11 are between the two tube sheets 12, 13 wall-shaped side parts 20, arranged, the entire structure of heat exchanger network 11, tube sheet 12, 13 with covers 16, 18 and side parts 20, 21 held together with the aid of fasteners is.

One heat exchange medium, e.g. water, is passed through

the tubes 14 passed. The two covers 16, 18 have

_{as can only} be seen from the cover 16, connections 22 for

the connection of cooling water lines, not shown.

The cooling water is via the chamber formed by the cover 16 introduced into the tubes 14 and discharged from these and via the chamber formed by the cover 18. The other Heat exchange medium, e.g. charge air, acts on the heat exchanger network 11 on the entire outside.

The side parts 20, 21 are as in terms of their length the

^ O packet-like heat exchanger network 11 corresponding extruded profile sections formed in the area of both free end faces, of which in the drawing only each an end face 24 and 25 can be seen, one-piece, bead-like strips 26 and 27, in which at Extrusion molded recordings 28 and 29 are included. The recordings 28 and 29 are as continuous, about groove-like channels or channels designed, which run near these mentioned free end faces 24 and 25 and each to the tube sheet 12 and 13 are open. They run essentially parallel to the tubes The part of each side part 20, 21 extending between the strips on both sides consists of approximately one plate-shaped, either made of solid material or as a hollow body designed wall part. It is not shown that, during extrusion, there are also further fastening means for each side part 20, 21 can be molded in at the same time, e.g. brackets or receptacles for identification plates or similar. like

The free end faces 24, 25 of each side part 20 and 21 are designed as wide-area connection and contact surfaces, for components that are to be attached relative to them and not shown, e.g. covers, housing walls, pipelines, Pipe connection hoods or the like. For example, the heat exchanger 10 is provided with the visible, open side 23 with the free end faces 24, 25 on opposite surfaces of a

connecting wall not shown with interposition a seal applied and attached to it, while on the invisible, opposite side to the There free end faces an air scoop of a charge air line or the like with the interposition of a seal is put on and attached.

The strips 26, 27 are approximately rectangular in cross section, with the wall part extending therebetween of the respective side part 20, 21 form a step.

This stage gives its form-fitting assembly position during assembly before.

On the outside, each end face 24 or 25 terminates with the outer surface of the relevant side part 20 or 21. On the other hand, on the other hand, the respective free end face 24 or 25 protrudes to form a broad, substantial connection and contact surface.
20th

The respective receptacles 28, 29 can be round, square, U-shaped or the like in cross section. When shown In the exemplary embodiment, the receptacles 28, 29 each have a G-shaped cross section. This results from square cross-section with provided in the area of the free end faces 24, 25, extending over the entire length Longitudinal slots 30 and 31, respectively.

Both side parts 20, 21 have in the area of both free end faces, there at least on both the tube sheet 12, 13 adjacent end regions, in the receptacles 28, 29 inserted and held tension-secured fastening members which consist of fixing bolts here, from which you only have a single fastening bolt 32 recognizes the front, upper end region of one side part 20 in the drawing. The fastening bolt 32 engages through a corresponding hole in the

- if

adjacent tube sheet 12 and further through a corresponding hole in the cover 16 sitting thereon. At the end it has a threaded shoulder 33, which in the assembled state has at least a short length over the outer

g surface of the cover 16 protrudes and on the one the whole Package when tightening the clamping flutter is screwed on, as was done for the other three corners with there nuts 34, 35 and 36 can be seen.

In another exemplary embodiment, not shown each fastening bolt 32 only engages through the respectively adjacent tube sheet 12, on which the the Forms tightly gripping flutter sits on it. The cover 16, 18 is then recessed in the respective corner area so that one the nut can unscrew, and is otherwise attached to the tube sheet 12 or 13 by means of its own screws.

Each fastening bolt 32 is seated on an ^{engaging part 37, 38 which engages in the associated receptacle 28, 29 ″ a} , the cross-sectional shape of which is adapted to that of the corresponding receptacle 28, 29 and which is received therein essentially in a form-fitting manner. In the embodiment shown, the engagement extends steeply 37, 33 over the entire length of the bar 26> 27 and the receptacle 23,29 contained therein. It forms a tie rod for the fastening bolt 32 adjoining it at the top in the drawing and a corresponding fastening bolt of the same type that is not visible below. The fastening bolt 32 is round whereas the engagement is steep 37, 38. Both are integral with one another.

In another exemplary embodiment, not shown can the engagement part 37 on the one hand and the two-sided On the other hand, fastening bolts also have the same shape, e.g. cylindrical, be designed. Instead of a one-piece design, the respective two-sided fastening

bolts can also be designed as independent parts that attached to the engaging part, e.g. welded to or therein are screwed in.

The side parts 20, 21 contain in the respective receptacles 28 and 29 special holding means for transverse to the respective free end face 24 or 25 extending fastening means, by means of which on said sides Components can be attached to the heat exchanger 10 or the latter can be attached to such components. This holding means generally consist of threaded abutments held in a form-fitting manner in the receptacles 28, 29, with these underneath Threaded bores or - meaning kinematic reversal Threaded bolts are to be understood.

In the embodiment shown, these are holding means in the form of the threaded abutments, an integral part of each engagement part 37, 38; because every engagement part 37, 38 is provided here with successive threaded bores 39 and 40, respectively, which are used for free end face 24 and 25 are open and their diameter is not greater than the width of the respective Longitudinal slot 30 or 31, so that the threaded bolts used for fastening reach through the latter which engage in the threaded bores 39 and 40, respectively.

When assembling the heat exchanger 10, the side parts 20, 21 are positioned in the position shown and are inserted into the receptacles located on both sides of each side part 20, 21, such as the receptacles 28, 29, corresponding engagement parts, such as the engagement parts 37, 38, wherein the respective end-side fastening bolt, the tube plates 12, 13 and the lids 16, pass through 18, as shown in the drawing, the fastening bolt (j _en tubesheet 12 and cap 16 passes through. then, to the respective threaded heels fastening

• 1 bolt, as screwed onto the threaded shoulder 33 of the fastening bolt 32, nuts, such as the nuts 34-36, via which the entire heat exchanger 10 is then clamped together to form a solid and tight unit. By means of screws engaging in the threaded bores 39 and 40 of the engagement parts 37 and 38, the heat exchanger 10 is screwed with the end faces 24 and 25, for example, to a not shown, facing Notorgehäusewwand and on the other hand in the same way with one of the supply line for the charge air to be cooled ^% serving line connected.

To the connection 22 of the cover 16 and a corresponding one Connection of the other cover 18, the cooling water lines are then connected.

The heat exchanger 10 is simple and requires only little effort in terms of manufacture and assembly. The special one Reduction of the manufacturing costs is achieved in that the side parts 20, 21 as extruded profile sections are trained. They are made from an extruded profile of any length in just one operation cut to the required size and are then ready for assembly without further processing steps would be necessary. By designing it as an extruded section each side part 20, 21 is made dimensionally accurate, also cutting to length from an extruded profile Any length can be made true to size. A saving in material and weight is also advantageous with regard to the side parts 20, 21, which also leads to a reduction in costs. Through the extrusion process

^ O the same with molded strips on both sides with it located recordings per side part 20, 21, this is also dimensionally stable. It is also advantageous that without Additional effort per side part 20, 21 equal to additional fasteners, e.g. recordings for identification plates

"° which, in particular nameplates, are also provided can. Also the engagement parts 37, 38 used in each case

with fastening bolts extending therefrom at both ends 32 are simple and, inexpensive. For example, they can be manufactured relatively cheaply as machine parts. aside from that it can be arranged so that one engages parts 37, each with fixing bolts 32 on both sides of a certain standard length that are available for different lengths trained heat exchanger 10 can use; because the length of each engagement part 37, 38 does not necessarily have to be so be as long as the respective receptacle 28, 29 in the bar 26, 27 on both sides of each side part 20, 21, but In contrast, it can also be smaller. You can therefore engage parts 37, 38 with the smallest length of the side parts 20, 21 finished with a predetermined length, with fastening bolts protruding relatively long on both sides

32. Standard sizes kept in stock can be used for short heat exchangers 10 by adding the protruding Threaded shoulders 33 · of the fastening bolts 32 cut off will. The respective engagement part 37, 38 extends, for example, over the entire length of the so dimensioned Side part 20 or 21, as shown for example in the drawing. If heat exchangers of greater length are required, in which the side parts 20, 21 are correspondingly longer, the same engagement parts 37, 38 can be used, with the protruding thread shoulders of the fastening bolts 32 on both sides then correspondingly less must be cut off to adjust the length. This is also the case with regard to the engagement parts 37, 38 standardization is possible with fastening bolts 32 on both sides, so that only a single type or only a few a few types of different lengths must be manufactured and kept in stock. As explained, the assembly is also of the heat exchanger 10 from the individual elements to accomplish quickly and without great effort. the Tube sheets and covers are quick and easy to put on, and the entire unit is screwed on and tightened the nuts can then be quickly and easily converted into one

tight, tight unit clamped together. Another 'essential advantage' is that the side parts 20, 21 themselves do not have to have any special threaded holes for attaching the heat exchanger 10 to, for example, an engine housing wall and for attaching, for example, an air scoop of a charge air line to the heat exchanger 10. Rather, these holding means are integrated right into the engaging parts 37, 38. When the screws through the threaded holes 39, 40 engaging screw ^Den, the form-fitting seated in the receptacles 28, 29 engaging portions 37, 38 is securely held against eventual withdrawal characterized in that the angled end leg of the G-profile of each receptacle 28, 29, Support engagement parts 37 and 38 accordingly.

In addition, the fastening bolts 32 with a threaded shoulder 33 any reaction forces also act on the tube sheets 12, 13 and the lids 16, 18 transferred when the penetrated by the fastening bolt 32 and threaded shoulder 33 the respective hole is approximately precisely fitting. In this way, in addition to the side parts 20, 21 these other elements of the heat exchanger 10 in the support and absorption of such reaction forces part.

Claims (1)

Patent attorney Mlilberger.scr.-65 · - - Authorized representative at Dip! - Ing. Volkhard Kratzsch D-7360-EssKngen European Patent Office European patent attorney (0711) 317000 Telephone Stuttgart esslingenneckar Deutsche Bank Esslingen 210906 cable «krapatent» Post office Stuttgart 10004-701 Radiator factory January 24, 1984 Längerer & Reich GmbH a Co. K.G Filderstadt 1 lawyer file 3715 Expectations ' 1.) Heat exchangers, in particular charge air coolers, with a heat exchanger network (11) arranged between two tube sheets (12, 13) and made up of individual tubes (14) that are parallel to one another and associated ribs (15) or fins that extend transversely from the tubes (14) are interspersed, with lids (16, 18) placed on both sides of the tube sheets (12, 13), with side parts (20, 21) sitting on both sides of the heat exchanger network (11) and between the tube sheets (12, 13) and with fastening means which hold the cover (16, 18), tube sheet (12, 13) and side parts (20, 21) together, characterized in that the side parts (20, 21) close to the free end faces (24 and 25) at least in both, the tube sheet (12, 13) adjacent end areas to the tube sheet (12, 13) open receptacles (28 or 29) and in the receptacles (28 or 29) inserted and secured secured fastening members (32, 34, 35, 36) have which at least on the respective tube sheet (12, 13) attack. 2. Heat exchanger according to claim 1, characterized in that the receptacles (28, 29) to the tubes (14) run approximately parallel. 3. Heat exchanger according to claim 1 or 2, characterized in that the fastening members have fastening bolts (32), each of which reach through at least the respective tube sheet (12, 13). 4. Heat exchanger according to claim 3, characterized in that the fastening bolts (32) on a threaded shoulder (33) a the package Wear nuts (34 to 36) that are clamped together when tightening. 5. Heat exchanger according to one of claims 1 -4, characterized in that the fastening members (32) through the respective tube sheet (12, 13) and at the same time also through the cover (16, 18) sitting on it reach through and to clamp the side parts (20, 21) with the two tube sheets (12, 13) and the two covers (16, 18) are formed. 6. Heat exchanger according to one of claims 1 -5, characterized in that the receptacles (28 or 29) are designed as continuous, groove-like channels or channels.
25th 7. Heat exchanger according to one of claims 1-6, characterized in that the Recordings (28 or 29) have an approximately round or square or U-shaped or C-shaped cross section have and that in the receptacles (28 or 29) engaging engagement parts (37 or 38) of the fastening members (32) adapted to the cross-sectional shape of the receptacles (28, 29) and essentially form-fitting therein are included. 8. Heat exchanger according to one of claims 1-7, characterized in that the two fastening members of one end face of a side part each have their own head-like engagement part, which by means of a cross bar, in particular a transverse pin engaging in a transverse bore in the area of the receptacle, held in a tension-secured manner. 9 »Heat exchanger according to one of claims 1-7, characterized in that the two fastening members (.32) one end face of a side part (20 or 21) a common to both, as Tension rods have effective engagement part (37 or 3Θ), which extends from one fastener to the other extends and the receptacle (28 or 29) penetrates at least approximately over its entire length. 10. Heat exchanger according to claim g, characterized in that 'the two fastening members (32) at the end of each common engagement part (37 or 38) acting as a tie rod with the latter are in one piece or are attached to this as independent parts, in particular in the engagement part (37 or 38) are screwed in or welded to this. . Heat exchanger, in particular according to one or more of the preceding claims, characterized in that that the side parts (20, 21) each as in the length of the packet-like heat exchange ^ O schernetz (11) corresponding extruded profile sections formed with receptacles (28 and 29) formed in the extrusion process with near two free end faces (24 and 25) are. 12. Heat exchanger according to claim ^, characterized ', that the extruded profile sections in the area of both free end faces (24 resp. 25) have approximately bead-like, one-piece strips (26 or 27) in which the respective receptacle (28 or 29) is included. 13. Heat exchanger according to claim 11 or 12, characterized characterized in that the side parts (20, 21) each have an approximately plate-shaped, solid material or have a wall part designed as a hollow body. 14. Heat exchanger according to claims 11-13, d a characterized in that the side parts (20, 21) other fasteners molded in during extrusion, such as in particular receptacles for Have identification plates or the like. 15 .. heat exchanger according to one of claims 1 -10, characterized in that the side parts are each as packet-like in length Heat exchanger network corresponding sheet metal sections with to form the respective recordings on the free End faces are formed approximately U-shaped beveled edges. 16. Heat exchanger according to one of claims 1-15, characterized in that the free end faces (24 and 25) of each side part (20, 21) as connection and contact surfaces for relative components to be attached for this purpose, in particular covers, housing walls, pipelines, pipeline connection hoods Od. Like. Are formed.
35 17. Heat exchanger according to claim 16, characterized in that the free end faces (24 or 25) with the outer surface of the side part (20 or 21) each at least essentially close off and facing away from the pipes (14) of the tube bundle protrude in the direction pointing out beyond the inner surface of the side parts (20 or 21) with the formation of large-area, essential connection and contact surfaces. . Heat exchanger, in particular according to one or more of the preceding claims, characterized in that that the side parts (20, 21) in their receptacles (28 and 29) holding means (37, 39 or 38, 40) for fastening means running transversely to the connection and contact surface, by means of which components can be attached relative to this. 19. Heat exchanger according to claim 18, characterized in that the holding means from held in a form-fitting manner in the receptacles (28 and 29) Threads (39 or 40), in particular with threaded holes or protruding threaded bolts, are formed and that the free end faces (24 and 25) at least in the area of these threaded holes (39 or 40) or threaded bolts of the abutment openings (30 or 31) for the Passage of threaded bolts engaging in the threaded bores (39 or 40) or from the receptacle (28 or 29) has protruding threaded bolts. 1. 20. Heat exchanger according to claim 19, characterized characterized in that the free end faces C24 and 25) as a passage openings Longitudinal slot running along the entire length (30 resp. 31) or have individual transverse slots or bores running at intervals. 21. Heat exchanger according to one of claims 18-20 ·, characterized in that the holding means are formed from threaded bores (39 or 40) are in special, used abutments and / or in the individual engagement parts or in the continuous, as a tie rod effective engagement part (37 or 38) included are.