DE102013213031A1 - Nozzle for heat exchanger e.g. intercooler, has flared curve region formed in inner contour of wall extending from first to second aperture, such that cross-section of extension portion of inner contour of wall is formed in oval shape - Google Patents

Abstract

The nozzle (1) made of plastic and/or aluminum has channel-shaped wall (13) having first and second apertures (2,3) such that the opening area of second aperture is greater than opening area of first aperture. A flared curve region is formed in the inner contour of wall extending from first to second aperture. The cross-section of extension portion of inner contour of wall is formed in shape of an oval (8). A midpoint (9) of oval shaped section is located on a connecting axis (5) for connecting the midpoint (6) of first aperture with midpoint (7) of second aperture.

Description

Technical area

The invention relates to a nozzle for a heat exchanger, with a channel-shaped wall having a first opening and a second opening, wherein the opening area of the second opening is larger compared to the opening area of the first opening, and the inner contour of the wall, which of the first Opening to the second opening extends, has a widening course.

State of the art

Heat exchangers, in particular intercoolers, in the prior art at their ends in each case a connecting piece for the supply and the discharge of the fluid flowing through them. The nozzles are exposed to the fluid flow with all its properties, such as high temperatures and / or high pressures.

Nozzles for today's heat exchanger are usually made of a plastic, as they should have in addition to the necessary strength above all, a low weight, which is associated with the lowest possible use of materials. Also, the nozzle should be inexpensive to produce.

The sockets regularly have rib elements on their outer surfaces, which effect an additional increase in the strength of the neck.

The main task of the nozzle is to supply the fluid as optimally as possible to the heat exchanger block or to discharge the fluid therefrom. This should be accompanied in particular by the lowest possible pressure drop and the lowest possible turbulence of the fluid flow.

In this case, the nozzle should form a tight connection with the tube sheet of the heat exchanger, which remains as possible over the entire life of the heat exchanger. At too low a strength of the nozzle, it may come to deformations of the nozzle due to the pressure and the pressure fluctuations in the interior of the nozzle. These deformations can have a negative effect on the tightness of the connection between nozzle and tube sheet. In addition, deformation of other components of the heat exchanger can be damaged. In particular, plastics are affected, such as damage to the material can occur due to the limited temperature resistance, also permanent deformation and changes in the material characteristics may occur, which affect the function of the nozzle.

A disadvantage of the prior art is that the plastic nozzles used today have too low a compressive strength to withstand the expected, especially in the intercooler, higher pressures (up to 6 bar) in the future.

In addition, the internal geometry of the nozzle is not optimally permitted in terms of pressure losses occurring and turbulence of the fluid, so that too high pressure losses occur, which adversely affect the overall efficiency of the heat exchanger.

Presentation of the invention, object, solution, advantages

Therefore, the object of the present invention to provide a nozzle, which withstands the expected pressure conditions in the heat exchanger and at the same time is designed as low as possible in terms of weight and material consumption. In addition, it would be desirable if the geometry of the neck allows for fluid flow with lower pressure drops and swirls.

The object of the present invention is achieved by a nozzle with the features of claim 1.

An embodiment of the invention relates to a nozzle for a heat exchanger, with a channel-shaped wall, which has a first opening and a second opening, wherein the opening area of the second opening compared to the opening area of the first opening is larger, and the inner contour of the wall, which of the first opening to the second opening, has a widening course, wherein the inner contour of the wall over a portion of its extension in cross section takes the form of an oval whose center lies on a connecting axis, which is the center of the first opening with the center of the second Opening connects.

Due to the widening contour of the wall, which results from the different sized openings, in the case of the nozzle on the inflow (inflow) of the fluid stream which flows out of the supply line fanned and distributed over the entire width of the heat exchanger block. At the nozzle on the outflow (outflow), the effluent from the heat exchanger block fluid flow is collected and channeled and transferred to the discharge of the fluid.

Particularly advantageous is the use of the nozzle on a charge air cooler. In this case, the medium flowing through the heat exchanger is usually air.

An oval is understood in particular to mean a closed twice continuously differentiable convex curve in the plane.

It is also expedient if the wall has an edge-and offset-free transition from the oval inner contour of the wall to the first opening and / or the second opening, wherein the wall assumes the shape of an oval in cross-section within the portion in cross-section.

By a edge and paragraph free course ensures that the flowing fluid inside the nozzle is not inadvertent, distracted or swirled, which would on the one hand, the flow of fluid into the heat exchanger block would be disturbed and on the other hand, the pressure loss would increase.

Advantageously, the transitions to both the first opening and the second opening are edge-and paragraph free executed.

Due to the oval cross sections creates a particularly advantageous for the fluid flow inner contour. There are no edges and no shoulders on the inner contour, which could adversely affect the fluid flow. Also, this edge and paragraph free design reduces the stresses in the material, which is beneficial to the strength. Due to the paragraph-free course of the inner contour continues to create a more uniform fluid flow in the interior of the nozzle, since no unwanted turbulence of the fluid flow arise.

Advantageously, the portion within which the cross-section takes the form of an oval, extends over the largest possible area of the nozzle.

In addition, it is expedient if the outer contour and / or the inner contour of the wall is curved inwardly compared to a straight-line connection between the edge of the first opening and the edge of the second opening.

Due to the inwardly curved inner contour of the nozzle, a particularly uniform flow of fluid is possible. In particular, the fanning out of the fluid flow at the inlet nozzle and the channeling of the fluid flow at the outlet nozzle takes place with a minimum of flow separations from the inner contour and thus particularly advantageously.

A straight-line connection from the edge of the first opening to the edge of the second opening means a rectilinear connection of a point of the edge of the first opening with a point of the edge of the second opening lying in a common cutting plane which extends along the axis of connection between the center of the first Opening and the center of the second opening extends and includes.

Furthermore, it is expedient if a rib is arranged on the outer surface of the wall, the back of which runs in a straight line and / or curved manner, wherein the foot region of the rib bears against the outer surface of the wall.

The back of a rib here means the remote from the outer surface of the wall region of the rib, which is free in the room. The back in its two lying along the Hautpausdehnungsrichtung the rib end regions in each case in the outer surface over. The back can run in particular straight or curved. The foot region of the rib is the part that is integrally connected to the outer surface of the wall and whose course is oriented on the outer surface of the neck.

By one or more ribs on the outer surface of the nozzle, the strength of the wall can be increased, which is particularly advantageous in view of expected future higher pressures in the application of the intercooler.

It is also expedient if the back merges into the outer contour of the wall at its end region directed toward the first opening and / or its end region directed towards the second opening with a radius.

This is particularly advantageous because a weakening notch effect can be prevented by angular transitions by a radius at the transition. The neck thus gains overall strength and is particularly advantageous in terms of durability.

It is also preferable if a rib running parallel to the opening surface of the second opening is arranged on the outer surface of the wall at the second opening or at a distance from the second opening.

By such a rib, in particular, the strength of the nozzle can be increased. At the same time, the rib can represent a mounting aid, which makes it easier to connect a connecting cable to the nozzle. The rib can also serve, for example, as a point of application for a connecting means or an assembly tool.

Furthermore, it is advantageous if a plurality of first and second ribs are arranged in each case parallel to one another on the outer surface of the wall, wherein the first and second ribs are perpendicular to the opening surface of the second Extend opening from the circumferential rib starting on the outer surface of the wall.

By such an arrangement of the ribs, the strength of the nozzle can be increased. In particular, the resistance of the nozzle against occurring tensile forces can be increased.

It is also expedient if a plurality of third and fourth ribs are arranged running parallel to each other on the outer surface of the wall parallel to the opening surface of the second opening, wherein the third and fourth ribs extend at least partially between the first and second ribs.

The third and fourth ribs are particularly advantageous in order to increase the resistance to stresses in the nozzle, as they can be caused for example by thermally induced stresses.

Moreover, it may be advantageous if seven first and three second ribs and in each case four third and four fourth ribs are arranged on the outer surface of the wall on two opposite sides.

By such a specific arrangement of the ribs, a particularly advantageous strength can be achieved in particular for the use of the nozzle as inflow or outflow of a charge air cooler.

It is also preferable if the neck has at least one, on at least one side, at least one, arranged diagonally to the first and third and / or to the second and fourth ribs, rib strut.

Such a rib arrangement also positively influences the strength of the neck.

In addition, it is preferable if the neck has in its interior a first tie rod, which runs parallel to one of the outer edges of the edge of the second opening and connects two substantially opposite sides of the wall.

An internally mounted tie rod can increase the strength of the nozzle in addition. In particular, a tie rod can reduce the so-called breathing of the nozzle, which is created by changing positive and negative pressures in the nozzle, wherein the nozzle expands and contracts again. This also positively affects the strength of the neck. In advantageous developments, a plurality of tie rods can be arranged in the interior of the neck.

It is also advantageous if the nozzle is made of plastic and / or aluminum and a box-floor connection by a clip connection attachable, solderable and / or weldable.

A box-floor connection here means in particular the connection between the nozzle and a tube plate, in which the tubes of a heat exchanger block are held. These connections can be achieved, for example, by jamming or clipping.

It is further preferable if the first opening is substantially circular and the second opening is substantially rectangular. This design of the openings ensures that the nozzle can be easily connected to the regularly used round inlets and outlets as well as the regularly used square heat exchanger blocks.

Moreover, it is advantageous if the outer contour of the wall substantially follows the inner contour of the wall.

The outer contour following the inner contour results in particularly advantageous properties for the entire neck, in particular with regard to the required installation space and the weight of the component. In this case, the outer contour and the inner contour respectively designate the contour that results from a section through the connecting piece from the first to the second opening. A juxtaposition of the respective outer contour or inner contour results in the outer surface or the inner surface of the wall of the nozzle.

Advantageous developments of the present invention are described in the subclaims and in the following description of the figures.

Brief description of the drawings

In the following the invention will be explained in detail by means of an embodiment with reference to the drawing. In the drawing show:

1 a perspective view of a nozzle according to the invention,

2 a perspective view of a nozzle according to the invention according to the 1 .

3 a further perspective view of a nozzle according to the invention obliquely from below,

4 a perspective view of a nozzle according to the invention with at the Outer contour of the outer surface extending ribs obliquely from above

5 a side view of a nozzle according to the invention according to the 4 .

6 a further side view of a nozzle according to the invention according to the 4 .

7 a view of a nozzle according to the invention from below, and

8th a further view of a nozzle according to the invention from below according to the 7 ,

Preferred embodiment of the invention

The 1 shows a perspective view of a nozzle 1 , A neck 1 as he is in 1 is shown, serves the supply and / or the discharge of a fluid into or out of a heat exchanger. Advantageously, this heat exchanger is a charge air cooler. The following is always on the neck 1 , which is used to supply the fluid reference. The versions apply analogously to the nozzle 1 , which serves for the discharge of the fluid from the heat exchanger.

The task of the neck 1 is to fan out the fluid, which is passed via a feed line to the heat exchanger, from the narrow cross-section of the feed line to the further cross section of the heat exchanger Blacks and to distribute the flow of the fluid evenly on the tubes arranged in the heat exchanger block.

It is advantageous if the nozzle produces the lowest possible pressure loss in the fluid flowing through it, and causes the least possible turbulence of the fluid flow within the nozzle.

The stub 1 consists essentially of a channel-shaped wall 13 which is a first opening 2 and a second opening 3 having. The opening area of the first opening 2 is compared to the opening area of the second opening 3 lower. The transformation 13 in which the first opening 2 and the second opening 3 are arranged or which connects the two openings, has an outer contour 4 on. This outer contour extends from the first opening 2 to the second opening 3 expanding, that is about funnel-shaped. This widens the outer contour 4 corresponding to the different sized opening areas of the first opening 2 and the second opening 3 , starting from the first opening 2 from to.

The wall 13 also has an outer surface, which at different areas of the neck 1 each a different outer contour 4 having. The outer contour 4 depends directly on the outer surface and each describes a portion of the outer surface of the wall 13 ,

In the 1 shown first opening 2 has a circumferential border 10 on. The first opening 2 is circular in the embodiment shown. The second opening 3 in turn has a peripheral edge 11 on and is rectangular. Also according to the invention other cross-sectional areas can be used.

One reason why the first opening 2 is circular, may be that leads are regularly used or derivatives, which also have a circular cross-section. One reason why the second opening 3 can be rectangular, may be that heat exchanger - and in particular intercooler - regularly have a rectangular tube sheet to which the nozzle 1 is connected. The stub 1 thus represents a transition from the cross-sectional area of the circular inlet and outlet to the rectangular cross-section of the tube plate of the heat exchanger.

In alternative embodiments, it is also conceivable that the first opening and the second opening of the in the 1 to 8th different shapes shown.

In the in 1 shown embodiment of the nozzle 1 stand the plane of the first opening 2 as well as the plane of the second opening 3 at an angle to each other. This is especially good on the connection axis 5 to recognize which the center 7 the opening 3 and the center 6 the opening 2 connects with each other. In this case, the connection axis is perpendicular to the plane of the first opening and forms an obtuse angle with the plane of the second opening.

In alternative embodiments, the openings 2 . 3 or the relevant levels also in one of the 1 Deviating angle to each other. It is also conceivable that the connection axis 5 which in the 1 is shown in a straight line, in alternative embodiments as a connecting line has a curvature, that is preferably a curved curve.

The outer contour 4 of the neck 1 takes the shape of an oval in cross-section at least in a portion of its extension 8th at. This is an example of the in 1 shown oval 8th shown. The middle-point 9 of the oval 8th is also on the connection axis 5 ,

The inner contour 12 , which corresponds to the outer contour with the same wall thickness, therefore essentially follows the outer contour 4 , The inner contour 12 Thus, as well as the outer contour, in a partial region of its extension in cross-section the shape of an oval 8th on. This oval 8th is however about the wall thickness of the wall 13 of the neck 1 smaller.

Furthermore, in the upper part of the 1 shown circumferential grooves and a circumferential shoulder, which serve in the concrete embodiment for fastening the supply and the discharge. In the lower part of the neck 1 is below the opening 3 the connection area shown, which is connected to the tube sheet of a heat exchanger.

Furthermore, in 1 to realize that the outer contour 4 compared to an imaginary linear connection of the edge 10 the first opening 2 with the edge 11 the opening 3 is curved inwards.

The straight-line connection of the edge 10 the first opening 2 with the edge 11 the second opening 3 corresponds to the connection of a point on the edge 10 as well as a point on the edge 11 which lie in a sectional plane, which along the connection axis 5 through the neck 1 is laid. For all cuts along the connection axis 5 the outer contour bulges 4 compared to a straight-line connection of the edge 10 with the edge 11 inside within this cutting plane.

The 2 shows one of the 1 corresponding view of the neck 1 , The reference numerals correspond to those of 1 and, where necessary, supplemented by further reference numbers.

In the 2 are more oval 8th . 8a . 8b and 8c shown. The centers of the respective ovals are in turn also on the connecting axis 5 which is the center 6 the first opening 2 with the center 7 the second opening 3 combines. For clarity, the connection axis 5 as well as the centers of the ovals in the 2 not shown.

The cross section of the inner contour 12 and thus also the cross section of the outer contour thus assumes an oval shape in a large part of the extension area. This oval shape of the outer contour 4 and thus also the inner contour 12 causes, in particular, the inner contour 12 of the neck 1 has no paragraphs or edges. Furthermore, created by the oval shape, no straight, flat surfaces in the interior of the nozzle 1 ,

In the upper area is the inner contour 12 free of edges and edges from its oval basic shape to the circular shape of the opening 2 above. In the lower area is the inner contour 12 also from its oval basic shape in the rectangular basic shape of the opening 3 over and has no edges or paragraphs.

This smooth design of the inner contour 12 the wall 13 Causes the fluid flow through the nozzle 1 with a low pressure loss and a low turbulence through the nozzle 1 can flow. Due to the edge and heel-free inner contour 12 of the neck 1 the fluid flow flows without turbulence on the inner contour 12 the wall 13 along. There is no flow separation from the wall 13 , This leads to a particularly good distribution of the fluid in the downstream heat exchanger block.

The 3 shows another view of the neck 1 , The reference numbers used correspond to those of 1 and 2 match. In addition to the in 1 and 2 already described features is in the 3 now also the inner contour 12 12 the wall 13 of the neck 1 shown. As already described in the preceding figures, the inner contour runs 12 essentially parallel to the outer contour 4 ,

The 4 shows another view of the neck 1 as he is already in the 1 to 3 was shown. In addition, the nozzle has 1 of the 4 now on its outer contour 4 the wall 13 ribs 20 . 21 . 22 . 23 and holding elements.

On the wall 13 of the neck 1 run a variety of ribs 20 . 21 . 22 . 23 which increase the strength of the wall 13 are provided. There are both ribs 20 which is vertical from the second opening 3 towards the first opening 2 run as well as horizontal ribs 21 , which are parallel to the edge 11 the opening 3 run. In addition, there are sloping ribs 22 . 23 , which on the outer contour 4 the wall 13 are arranged.

All ribs 20 . 21 . 22 . 23 each have a back 26 on which of the wall 13 remote area of the rib 20 . 21 . 22 . 23 describes. The along the wall 13 extending area of the ribs 20 . 21 . 22 . 23 is as a footer 27 Are defined.

The back 26 the ribs 20 . 21 . 22 . 23 is essentially straightforward. Especially the back 26 the vertical ribs 20 points to his, the first opening 2 facing, end region a transition region with a radius 25 on, in which the vertical rib 20 in the wall 13 expires. Ribs 20 especially because of that run with a radius 25 in the wall 13 to avoid a damaging notch effect.

In alternative embodiments, such a transition would also be at a radius of that of the second opening 3 facing, end conceivable.

Along the long side of the rectangular second opening 3 are next to the horizontal ribs 21 and the vertical ribs 20 also at an angle to the vertical ribs 20 running ribs 22 . 23 arranged. These slanted ribs 22 . 23 serve the further stabilization of the neck 1 and thus the increase in strength.

The shape and design of the sloping ribs 22 . 23 is chosen so that the oblique ribs 22 . 23 especially around the point 24 an increase in strength of the nozzle 1 produce.

The point 24 This forms the weakest point of the wall 13 of the neck 1 , due to the large area surrounding the wall 13 along the long edges of the second opening 13 having. Here is the wall 13 of the neck 1 be deformed by the changing pressure conditions in the interior of the neck the strongest. The slanted ribs 22 . 23 which is essentially on this point 24 are aligned and in the horizontal ribs 21 and vertical ribs 20 formed box, here contribute to the stabilization, in particular the wall 13 , at. The arrangement of the ribs 22 . 23 is particularly advantageous because through them to an increase in the material thickness of the nozzle 1 can be dispensed with in this area. Ribs 22 . 23 be in this arrangement, especially in the area of the back 26 the ribs 22 . 23 primarily loaded on train, which is particularly advantageous for the strength and durability.

The Formgebund, in particular the ribs 20 which in the foot area 27 the trumpet-like wall 13 of the neck 1 follow and have a straight back 26 combined with the predominant tensile load in the area of the back 26 the ribs 20 leads to a lower deformation of the ribs 20 operational. Here is particularly advantageous that the back 26 the ribs 20 the furthest area of the ribs 20 from the hot medium passing through the neck 1 flows forms. The back 26 indicates therefore in relation to the foot area 27 lower temperatures, which improves the resistance to unwanted deformations and material changes.

The advantages just described are in particular in the shape of the ribs 20 founded. Through the straight back 26 and the wall 13 following footer 27 becomes a special stiff rib 22 . 23 educated.

The two on the outer contour 4 the wall 13 arranged holders are not described here in detail, since they are not essential to the invention and serve only the connection of the nozzle to its subsequent installation environment.

The 5 shows the neck 1 which is already in 4 was shown in a side view. Here is especially the back 26 the vertical ribs 20 as well as the foot area 27 which runs along the wall 13 runs and thereby the contour 4 follows to recognize. Likewise, the transition area of the foot area 27 the rib 20 to recognize which in a radius 25 in the wall 13 expires.

The 6 shows another view of the neck with ribs 20 . 21 . 22 . 23 , which already in the 4 and 5 were presented. The reference numerals also agree with the 4 and 5 match.

Also shown here is the point 24 , which runs along the long edge of the second opening 3 is arranged. This arises because of the large area of the wall 13 ,

Attaching the ribbed construction as they are already in 4 and 5 has been described, this serves in particular the increase in strength, without losing the wall thickness of the wall 13 to increase. This has a beneficial effect on the total weight of the component and also on the production costs of the nozzle 1 ,

In the 4 . 5 and 6 can also be seen that the outer contour 4 the wall 13 compared to the in 1 and 2 described, linear connections of the edge 10 the first opening 2 with the edge 11 the second opening 3 always curved inwards. The curvature of the wall 13 has a beneficial effect on reducing the pressure drop in the nozzle 1 ,

In addition to the previous figures of the neck 1 is in 6 the section 28 named. Along this section 28 the wall extends 13 and thus its outer contour 4 as well as the inner contour 12 already with the circular cross section of the opening 2 ,

The transition from the oval basic shape to this circular shape already takes place below this section. In alternative embodiments, it is possible and particularly advantageous if this circular area in the section 28 kept as short as possible and thus the oval basic shape of the wall 13 maintained as long as possible. This has particular beneficial effects on the fluid flow. The actual length of this section 28 is regularly dependent on the later installation situation and the required connection options of the nozzle 1 ,

The 7 as well as the 8th show a view of the neck 1 from underneath. The paper plane forms the opening 3 , The view thus passes through the opening 3 into the interior of the neck 1 ,

In the 7 is inside the neck 1 a tie rod 30 arranged, which is parallel to the short sides of the edge 11 the opening 3 runs. The tie rod 30 connects two opposite sides of the neck 1 together. The tie rod 30 is in relation to the air inlet of the nozzle 1 positioned so that the amount of air, which is right and left of the tie rod 30 flows past in approximately equal proportions to each other.

In 8th is next to the first tie rod 30 a second tie rod 31 arranged, which is parallel to the first tie rod 30 runs.

In alternative developments, an embodiment of the nozzle entirely without tie rods, but also with a number or plurality of tie rods is conceivable and advantageous depending on the final application. Similarly, the tie rod could also be parallel to the long side of the opening 3 run. When arranging the tie rods 30 . 31 Particular care should be taken to ensure that the fluid flow inside the nozzle 1 do not negatively influence.

The tie rod 30 respectively. 31 further serves to increase the strength of the nozzle 1 , By occurring during operation pressure differences within the nozzle, in particular the change between an overpressure and a negative pressure, causes the nozzle expands or contracts according to the prevailing pressure conditions.

By working the wall 13 can be the connection of the nozzle 1 , in particular to the downstream heat exchanger block, leaking.

Through the tie rods 30 . 31 can this movement of the wall 13 be minimized, resulting in a higher tightness of the connection of the nozzle 1 leads to the tube plate of the downstream heat exchanger block.

In particularly advantageous embodiments, the cross-section of the nozzle corresponds to an ellipse, which then also corresponds to the basic shape of the inner contour of an elliptical basic shape. The in the 1 to 8th shown and described in the accompanying description of the figures each have an elliptical cross-section, as a special case of the oval cross section.

Claims (12)

Support ( 1 ) for a heat exchanger, with a channel-shaped wall ( 13 ), which has a first opening ( 2 ) and a second opening ( 3 ), wherein the opening area of the second opening ( 3 ) compared to the opening area of the first opening ( 2 ) is larger, and the inner contour ( 12 ) of the wall ( 13 ), which from the first opening ( 2 ) to the second opening ( 3 ), has a widening course, characterized in that the inner contour ( 12 ) of the wall ( 13 ) over a portion of its extension in cross-section the shape of an oval ( 8th . 8a . 8b . 8c ) whose center ( 9 ) on a connection axis ( 5 ), which is the midpoint ( 6 ) of the first opening ( 2 ) with the center ( 7 ) of the second opening ( 3 ) connects. Support ( 1 ) for a heat exchanger, according to claim 1, characterized in that the wall ( 13 ) an edge-and paragraph-free transition from the oval inner contour ( 12 ) of the wall ( 13 ) to the first opening ( 2 ) and / or the second opening ( 3 ), wherein the wall ( 13 ) in cross-sections within the subsection in cross-section the shape of an oval ( 8th . 8a . 8b . 8c ). Support ( 1 ) for a heat exchanger, according to one of the preceding claims, characterized in that the outer contour ( 4 ) and / or the inner contour ( 12 ) of the wall ( 13 ) compared to a straight-line connection between the edge ( 10 ) of the first opening ( 2 ) and the edge ( 11 ) of the second opening ( 3 ) is curved inwards. Support ( 1 ) for a heat exchanger, according to one of the preceding claims, characterized in that on the outer surface of the wall ( 13 ) a rib ( 20 . 21 . 22 . 23 ) whose back ( 26 ) is rectilinear and / or curved, wherein the foot region ( 27 ) of the rib ( 20 . 21 . 22 . 23 ) on the outer surface of the wall ( 13 ) is present. Support ( 1 ) for a heat exchanger, according to claim 4, characterized in that the back ( 26 ) at its first opening ( 2 ) directed end portion and / or its to the second opening ( 3 ) directed end region with a radius ( 25 ) in the outer contour ( 4 ) of the wall ( 13 ) passes over. Support ( 1 ) for a heat exchanger, according to one of the preceding claims, characterized in that on the outer surface of the wall ( 13 ) one parallel to the opening area of the second opening ( 3 ) circumferential rib at the second opening ( 3 ) or spaced from the second opening ( 3 ) is arranged. Support ( 1 ) for a heat exchanger, according to claim 6, characterized in that on the outer surface of the wall ( 13 ) a plurality of first and second ribs are each arranged in parallel spaced relationship, wherein the first and second ribs perpendicular to the opening surface of the second opening ( 3 ) from the circumferential rib on the outer surface of the wall ( 13 ). Support ( 1 ) for a heat exchanger, according to claim 7, characterized in that on the outer surface of the wall ( 13 ) a plurality of third and fourth ribs parallel to the opening area of the second opening (FIG. 3 ) are mutually spaced, wherein the third and fourth ribs extend at least partially between the first and second ribs, respectively. Support ( 1 ) for a heat exchanger, according to claim 8, characterized in that on the outer surface of the wall ( 13 ) are arranged on two opposite sides in each case seven first and three second ribs and four each third and four fourth ribs. Support ( 1 ) for a heat exchanger, according to one of claims 8 or 9, characterized in that the neck on at least one side at least one, diagonal to the first and third and / or to the second and fourth ribs arranged, rib strut has. Support ( 1 ) for a heat exchanger, according to one of the preceding claims, characterized in that the neck ( 1 ) in its interior a first tie rod ( 30 . 31 ), which parallel to one of the outer edges of the edge ( 11 ) of the second opening ( 3 ) and two substantially opposite sides of the wall ( 13 ) connects to each other. Support ( 1 ) for a heat exchanger, according to one of the preceding claims, characterized in that the nozzle is made of plastic and / or aluminum and a box-floor connection by a clip connection attachable, solderable and / or weldable.

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