DE102020100105A1 - Heat exchanger - Google Patents

Abstract

Heat exchanger (1), at least comprising • a plurality of pipelines (2) which run parallel to one another and can each be flowed through by a first fluid (3), and • one between two adjacent pipelines (2) along a direction of extension (4) the pipes (2) continuously extending heat conducting structure (5) which alternately contacts the one pipe (2) and the other pipe (2) each with a contact area (6, 7), with two contact areas (6, 7) between each ) a heat exchanger area (8) is arranged, wherein the heat conducting structure (5) can be flowed over by a second fluid (9) in a direction (10) running transversely to the pipelines (2); wherein the heat conducting structure (5) is made from a sheet metal material and has at least one opening (11) in at least one heat exchanger region (8), which opening is made by separating and removing part of the sheet metal material.

Description

The present invention is directed to a heat exchanger, in particular for a motor vehicle.

A heat exchanger can comprise a first collecting box and a second collecting box as well as at least a plurality of pipelines which each run from the first collecting box to the second collecting box along an extension direction. The pipelines can be arranged at a distance from one another in such a way that a second fluid (e.g. ambient air) can flow over them along one direction (e.g. against the direction of travel of the motor vehicle), transverse to the direction of extension. A heat conduction structure over which the second fluid flows is arranged in the intermediate space formed between two pipelines. A first fluid used as a coolant or refrigerant flows through the pipelines, starting from the first collecting box, to the second collecting box. In particular, the heat exchanger, for. B. in connection with a fan frame, arranged in the front end of a motor vehicle, wherein the heat exchanger is regularly installed in the direction of travel in front of a drive unit of the motor vehicle and in front of the fan frame. The ambient air flows through the heat exchanger and, in the process, controls the temperature of the first fluid guided in the pipelines. The heat conduction between the fluids takes place via the heat conduction structure.

From the DE 102 42 188 A1 a flat tube heat exchanger is known. This heat exchanger has tubes as pipelines and ribs as heat conducting structure. In the contact points between the tubes and the ribs, disruptive elements are arranged, which swirl the air flow and thus improve the heat transfer. The disruptive elements are formed by separating and bending parts of the ribs.

Heat exchangers in heat pumps can ice up or frost if the surface temperature of the heat pump's evaporator falls below 0 degrees Celsius. When this heat exchanger is thawed, liquid water can form from the ice or frost, which only partially runs off the heat exchanger. Some of the liquid water does not run off and remains in the heat exchanger. This remaining water glaciers in the icing operation following the defrosting operation and thus worsens the efficiency of the heat pump. Glaciated means in particular that ice can increasingly form on the surfaces of the heat exchanger that may not have completely thawed in the meantime.

The frozen water, that is to say the ice, can at least partially block the heat exchanger in the area overflowing with air, so that less air can flow through the heat exchanger. This can also lead to a reduced efficiency of the heat pump.

It is the object of the present invention to at least partially solve the problems cited with reference to the prior art. In particular, a heat exchanger is to be proposed in which the problem of ice formation can at least be minimized.

A heat exchanger with the features according to patent claim 1 contributes to the solution of these objects. Advantageous further developments are the subject of the dependent claims. The features listed individually in the patent claims can be combined with one another in a technologically sensible manner and can be supplemented by explanatory facts from the description and / or details from the figures, with further design variants of the invention being shown.

• • eine Mehrzahl von Rohrleitungen, die zueinander (im Wesentlichen) parallel verlaufend angeordnet und jeweils von einem ersten Fluid durchströmbar sind, sowie
• • eine sich entlang einer Erstreckungsrichtung der Rohrleitungen kontinuierlich erstreckende Wärmeleitstruktur, die zwischen jeweils zwei zueinander benachbart angeordneten Rohrleitungen angeordnet ist.

A heat exchanger is proposed, at least comprehensively

• A plurality of pipelines which are arranged (essentially) parallel to one another and can each be traversed by a first fluid, and
• A heat conducting structure which extends continuously along a direction of extent of the pipelines and which is arranged between two pipelines arranged adjacent to one another.

The heat conduction structure alternately contacts the one (of the two mutually adjacent) pipeline and the other (of the two mutually adjacent) pipeline, each with a contact area. A heat exchanger area is arranged between each two contact areas. A second fluid can flow over the heat conduction structure in a direction running transversely to the pipelines.

The heat conduction structure is made from a sheet metal material and has at least one opening in at least one heat exchanger area, which opening is made by separating and removing part of the sheet metal material.

The pipelines serve in particular to convey the first fluid provided as a coolant or refrigerant. In particular, the pipelines extend in a straight line along the direction of extent. In particular, the pipelines are each designed as flat tubes, so that the Heat conducting structure can be connected in a simple manner via the contact areas with the flat surfaces of the pipelines.

In particular, the heat-conducting structure is produced from a sheet metal material, at least by forming. The heat-conducting structure itself has in particular no volume through which a flow can flow, but only a surface over which a second fluid can flow. The heat conduction structure is used for heat conduction between the pipelines and the first fluid guided therein and the second fluid flowing over the heat conduction structure. In particular, the heat-conducting structure extends in a wave-like manner between the pipelines and alternately contacts one pipeline and the other pipeline along the direction of extent via contact areas.

The second fluid is in particular ambient air which, for. B. a humidity, so a proportion of water vapor has.

The pipelines are arranged in particular between two collecting tanks, via which the first fluid is transferred to the pipelines or taken over by the pipelines.

The at least one opening is produced in particular by severing and removing part of the sheet metal material. In contrast to the disruptive element from the aforementioned DE 102 42 188 A1 is known, there is no partial cutting and then reshaping of the sheet material, but a complete cutting and removal.

In particular, the openings are formed by punching out part of the sheet metal material. In particular, there is no significant and / or no deformation of a part of the heat-conducting structure that remains on the heat-conducting structure that influences a flow of the second fluid.

The at least one opening should in particular allow water to drain out of the heat conducting structure or out of the heat exchanger.

In particular, the heat exchanger has an installation position, the pipelines in the installation position extending transversely to a direction of gravity and being arranged one behind the other along the direction of gravity. The heat-conducting structure thus extends alternately between an upper contact area and a lower contact area, which are spaced apart from one another by a height at least along the direction of gravity. The at least one opening is arranged in a lower third of the height.

The installation position refers to the position of the heat exchanger at its installation location, e.g. B. in a motor vehicle.

The pipelines are in particular arranged one above the other. This results in upper and lower contact areas of the heat conducting structure in relation to the direction of gravity.

In particular, the heat conducting structure in the contact areas is cohesive, for. B. via a solder material, connected to the pipelines. The contact area can thus have an extension along the extension direction. The contact area can, however, also be designed linearly and then, if necessary, extend exclusively along a contact line between the heat-conducting structure and the pipeline along the direction.

In particular, the at least one opening has a shape which, with respect to a liquid, generates a capillary effect downwards towards the lower contact area. It should preferably be avoided that solder material is drawn from the contact area into the opening. On the one hand, it must be ensured in particular that a sufficient distance is provided between the at least one opening and the contact area. On the other hand, the shape of the at least one opening is to be designed such that only capillary forces are generated which act in the direction of the contact area. In particular, the width of the opening is reduced as the distance from the contact area becomes smaller. In particular, the shape of the at least one opening is designed in the manner of a triangle, with a tip of the triangle being oriented in particular downwards towards the contact area.

In particular, the at least one opening is arranged outside the contact area. This can prevent the at least one opening from being at least partially closed by solder material or by the pipeline.

In particular, the heat exchanger area of the sheet metal material has a first length between two contact areas. The at least one opening is arranged outside a first area which includes the contact area and extends, starting from the contact area, along the heat exchanger area over a second length, the second length at least 5%, in particular at least 7.5%, preferably at least 10% of the first length.

In particular, there is thus a sufficient distance between the at least one opening and the Contact area realized so that solder material cannot be drawn into the at least one opening.

In particular, the sheet metal material of the heat-conducting structure has a V-shape or a U-shape in the contact area. In the case of a V-shape, the areas of the heat conducting structure adjoining the contact area on both sides extend at an angle to one another. In the case of a U-shape, the areas of the heat conducting structure adjoining the contact area on both sides extend parallel to one another. In particular, the contact area is formed by at least one radius, that is to say the heat-conducting structure in the contact area runs along a radius. Starting from the center point of the radius and starting from a surface normal that runs through the center of the contact area and perpendicular to the surface of the pipeline, an angular area extends. The at least one opening is in particular arranged outside an angular range of at least 10 angular degrees, preferably at least 30 angular degrees, particularly preferably at least 45 angular degrees, that is, at a distance in particular from the solder material in the contact area.

In particular, with the known dimensions of a heat conduction structure, e.g. B. with a height of 5 millimeters to about 20 millimeters, the at least one opening is arranged outside a contact area which has an extension of at least 0.3 millimeters, in particular at least 0.4 millimeters and preferably at least 0.5 millimeters along the heat conducting structure .

In particular, the at least one opening has an elliptical shape and / or is formed by a plurality of overlapping ellipses. Such a shape offers the advantage that a large number of different diameters or widths of the opening are combined in one shape of the opening. In particular, despite any entry of solder material into the opening, a sufficiently large area of the opening still remains free so that water drainage can be ensured.

In particular, the sheet metal material extends along the direction over a width, the at least one opening or the openings arranged in alignment with one another along the direction together extending over a maximum of 10%, in particular a maximum of 30% and preferably a maximum of 50% of the width. In particular, the at least one opening is arranged at a distance from an edge of the sheet metal material, so that the opening is completely surrounded by sheet metal material. In this way, the strength of the heat exchanger area present between the contact areas can be guaranteed.

The width extends in particular along the direction, that is to say transversely to the direction of extent.

In particular, the at least one opening has a width of at least 0.7 millimeters, in particular at least 1.0 millimeter, preferably at least 1.5 millimeters.

In particular, a structured second area is provided in the heat exchanger area, which is produced by separating and reshaping the sheet metal material. The at least one opening is arranged outside the structured second region. The second area in particular has a surface that is more opposed to the direction of flow of the second fluid, so that heat transfer between the second area and the second fluid is improved. In particular, the sheet metal material outside the second area is designed to be essentially flat or planar. In particular, the at least one opening is arranged exclusively in this flat or planar area of the sheet metal material.

A motor vehicle is also proposed, at least comprising a cooling circuit (a coolant or refrigerant circuit, hereinafter referred to as a cooling circuit) for temperature control of at least one component of the motor vehicle. The cooling circuit has at least one fluid line and the heat exchanger described. The pipes of the heat exchanger are fluidically connected to the cooling circuit and the first fluid circulating in the cooling circuit can flow through them. The first fluid flows through the pipes when the motor vehicle is in operation, the second fluid flowing over the heat-conducting structure which is arranged between the pipes.

The use of indefinite articles (“a”, “an”, “an” and “an”), especially in the patent claims and the description reproducing them, is to be understood as such and not as a numerical word. The terms or components introduced in this way are therefore to be understood in such a way that they are present at least once and, in particular, can also be present several times.

As a precaution, it should be noted that the numerals used here (“first”, “second”, ...) primarily (only) serve to distinguish between several similar objects, sizes or processes, so in particular no dependency and / or sequence of these objects, sizes or prescribe processes to each other. Should be a Dependency and / or sequence may be required, this is explicitly stated here or it is obvious to a person skilled in the art when studying the specifically described embodiment. If a component can occur several times (“at least one”), the description of one of these components can apply equally to all or part of the majority of these components, but this is not mandatory.

• 1: ein Kraftfahrzeug mit einem Kühlkreislauf;
• 2: einen Teil eines Wärmeübertragers in einer perspektivischen Ansicht;
• 3: eine Wärmeleitstruktur in einer Ansicht von oben;
• 4: eine erste Ausführungsvariante einer Wärmeleitstruktur in einer Ansicht von oben;
• 5: eine zweite Ausführungsvariante einer Wärmeleitstruktur in einer Ansicht von oben;
• 6: einen Teil einer Wärmeleitstruktur in einer Ansicht entlang der Richtung;
• 7: einen weiteren Teil einer Wärmeleitstruktur in einer Ansicht entlang der Richtung;
• 8: eine dritte Ausführungsvariante einer Wärmeleitstruktur in einer Ansicht von oben;
• 9: eine vierte Ausführungsvariante einer Wärmeleitstruktur in einer Ansicht von oben;
• 10: eine fünfte Ausführungsvariante einer Wärmeleitstruktur in einer Ansicht von oben; und
• 11: einen Teil eines Wärmeübertragers mit der fünften Ausführungsvariante einer Wärmeleitstruktur nach 10 in einer perspektivischen Ansicht.

The invention and the technical environment are explained in more detail below with reference to the accompanying figures. It should be pointed out that the invention is not intended to be restricted by the exemplary embodiments cited. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and findings from the present description. In particular, it should be pointed out that the figures and in particular the size relationships shown are only schematic. Show it:

• 1 : a motor vehicle with a cooling circuit;
• 2 : a part of a heat exchanger in a perspective view;
• 3 : a heat conduction structure in a view from above;
• 4th : a first embodiment variant of a heat conduction structure in a view from above;
• 5 : a second embodiment variant of a heat conduction structure in a view from above;
• 6th : a part of a heat conduction structure in a view along the direction;
• 7th : Another part of a heat conduction structure in a view along the direction;
• 8th : a third embodiment variant of a heat conduction structure in a view from above;
• 9 : a fourth embodiment variant of a heat conduction structure in a view from above;
• 10 : a fifth embodiment of a heat conduction structure in a view from above; and
• 11 : a part of a heat exchanger with the fifth embodiment of a heat conduction structure according to 10 in a perspective view.

The 1 shows a motor vehicle 22nd with a cooling circuit 23 . 2 shows part of a heat exchanger 1 in a perspective view. 3 shows a heat conduction structure 5 in a top view. The 1 to 3 are described together below.

The cooling circuit 23 is for temperature control of one component 24 of the motor vehicle 22nd intended. The cooling circuit 23 has a fluid line 25th and a heat exchanger 1 on. The pipelines 2 of the heat exchanger 1 are fluidly connected to the cooling circuit 23 connected and are of those in the cooling circuit 23 circulating first fluid 3 permeable. The pipelines 2 are in operation of the motor vehicle 22nd from the first fluid 3 along the direction of extent 4th flows through, the heat conduction structure 5 running between the pipelines 2 is arranged by the second fluid 9 along the direction 10 is overflowed.

The heat exchanger 1 comprises a plurality of conduits 2 which are arranged to run parallel to each other and each of the first fluid 3 can be flowed through, as well as one extending along a direction of extent 4th of the pipelines 2 continuously extending thermal conduction structure 5 between two adjacent pipelines 2 is arranged. The heat conduction structure 5 alternately contacts one pipeline 2 and the other pipe 2 each with a contact area 6th , 7th . Between every two contact areas 6th , 7th is a heat exchanger area 8th arranged. The heat conduction structure 5 is from a second fluid 9 in one across the pipelines 2 trending direction 10 overflow.

The pipelines 2 extend in a straight line along the extension direction 4th . In particular, the pipelines are 2 each designed as flat tubes, so that the heat conduction structure 5 in a simple way via the contact areas 6th , 7th with the flat surfaces of the pipelines 2 can be connected. The heat conduction structure 5 is made from a sheet metal material at least by forming. The heat conducting structure 5 itself does not have a flowable volume, but only one of a second fluid 9 overflowable surface. The heat conduction structure 5 serves to conduct heat between the pipes 2 and the first fluid carried therein 3 and the heat conduction structure 5 overflowing second fluid 9 . The heat conduction structure 5 extends undulating between the pipelines 2 and contacted along the extension direction 4th via contact areas 6th , 7th alternately the one pipeline 2 and the other pipe 2 .

The heat exchanger 1 has an installation position 12th on. The installation position 12th indicates the position of the heat exchanger 1 at its place of installation, here in a motor vehicle 22nd . In the installation position 12th extend the pipelines 2 across a direction of gravity 13th and are along the direction of gravity 13th arranged one behind the other. The heat conduction structure thus extends 5 alternately between an upper contact area 6th and a lower contact area 7th that at least along the direction of gravity 13th by a height 14th are spaced from each other. The at least one opening 11 is in a lower third of the height 14th arranged.

The heat conduction structure 5 is made of sheet metal and has a heat exchanger area 8th at least one opening 11 which is made by severing and removing part of the sheet material. The openings 11 are formed by punching out part of the sheet material. The at least one opening 11 is supposed to allow water to run off from the heat conducting structure 5 or from the heat exchanger 1 enable.

The heat conduction structure 5 is in the contact areas 6th , 7th cohesively via a solder material 28 with the pipelines 2 connected. This allows the contact area 6th , 7th an extension along the extension direction 4th (please refer 1 ) exhibit. The contact area 6th , 7th but can also be designed linearly and then extends exclusively along a contact line between the heat-conducting structure 5 and the pipeline 2 along the direction 10 (please refer 2 ).

The heat exchanger area 8th of the sheet material points between two contact areas 6th , 7th a first length 16 on. The at least one opening 11 is outside a first range 17th arranged, the lower contact area 7th includes as well as starting from the lower contact area 7th along the heat exchanger area 8th over a second length 18th extends.

The sheet material extends along the direction 10 across a width 19th .

In the heat exchanger area 8th is a structured second area 21 provided, which is generated by separating and reshaping the sheet material. The at least one opening 11 is outside the structured second area 21 arranged. The second area 21 in particular has one opposite the direction of flow of the second fluid 9 stronger opposing surface, so that a heat transfer between the second area 21 and the second fluid 9 is improved. The sheet material is outside the second area 21 essentially flat or flat. The at least one opening 11 is arranged exclusively in this flat or planar area of the sheet metal material.

In 3 the sheet metal material is shown in a flat, non-corrugated state. So far there is neither a wave shape nor openings 11 been introduced into the sheet material. The second area 21 however, it has already been generated.

4th shows a first variant embodiment of a heat conduction structure 5 in a top view. On the remarks on the 1 to 3 is referred to. Here are the openings 11 shown as round openings (left) and as elongated stripes.

The heat exchanger area 8th of the sheet material points between two contact areas 6th , 7th a first length 16 on. The round openings 11 are outside a first area 17th arranged, the upper contact area 6th or the lower contact area 7th includes as well as starting from the respective contact area 6th , 7th along the heat exchanger area 8th over a second length 18th extends.

5 shows a second variant embodiment of a heat conduction structure 5 in a top view. On the remarks on the 1 to 4th is referred to.

The sheet material extends along the direction 10 across a width 19th , which is along the direction 10 aligned openings 11 together over a maximum of 10% (left), a maximum of 30% (middle) or a maximum of 50% (right) of the width 19th extend. The openings 11 are spaced from an edge of the sheet metal material, so that the openings 11 are each completely surrounded by sheet metal. This allows a strength of the between the contact areas 6th , 7th present heat exchanger area 8th guaranteed.

6th shows part of a heat conduction structure 5 in a view along the direction 10 . On the remarks on the 1 to 5 is referred to.

The sheet material of the thermal conduction structure 5 points in the lower contact area 7th a V-shape. In the case of a V-shape, they extend to the lower contact area 7th areas of the heat conduction structure adjoining both sides 5 at an angle to each other. The lower contact area 7th is formed by a radius, so the heat conduction structure runs 5 in the lower contact area 7th along a radius. Starting from the center point of the radius and starting from a surface normal 26th passing through the middle of the lower contact area 7th and perpendicular to the surface of the pipeline 2 extends an angular range 27 . The at least one opening 11 is out of an angular range 27 arranged by at least 45 degrees, so at a distance from the solder material 28 in the lower contact area 7th .

7th shows another part of a heat conduction structure 5 in a view along the direction 10 . On the remarks on the 1 to 6th is referred to.

With the known dimensions of a heat conduction structure 5 , e.g. B. with a height 14th from 5 millimeters to approx. 20 millimeters, there is at least one opening 11 outside of a lower contact area 7th arranged along the thermal conduction structure 5 has an extension of at least 0.3 millimeters. There is at least one opening 11 also outside a first area 17th arranged, the lower contact area 7th includes as well as starting from the lower contact area 7th along the heat exchanger area 8th over a second length 18th extends.

8th shows a third variant embodiment of a heat conduction structure 5 in a top view. 9 shows a fourth variant embodiment of a heat conduction structure 5 in a top view. 10 shows a fifth embodiment of a heat conduction structure 5 in a top view. 11 shows part of a heat exchanger 1 with the fifth variant of a heat conduction structure 5 to 10 in a perspective view. The 8th to 11 are described together below. On the remarks on the 1 to 7th is referred.

The at least one opening 11 has a shape 15th on, which has a capillary effect downwards towards a liquid towards the lower contact area 7th generated. It should preferably be avoided that solder material 28 from the lower contact area 28 into the opening 11 is drawn into it. On the one hand, it is particularly important to ensure that there is a sufficient distance between the at least one opening 11 and the lower contact area 7th is provided. On the other hand is the shape 15th the at least one opening 11 designed so that only capillary forces are generated in the direction of the lower contact area 7th Act.

In the 10 and 11 it can be seen that there is an expanse 20th of the openings 11 with decreasing distance to the lower contact area 7th increasingly reduced. Here is the shape 15th of the openings 11 designed in the manner of a triangle, with a tip of the triangle pointing downwards to the lower contact area 7th is oriented.

The openings 11 are outside the lower contact area 7th arranged. This can prevent the openings 11 by solder material 28 or through the pipeline 2 be at least partially closed.

In the 8th and 9 point the openings 11 an elliptical shape 15th on or is formed by several intersecting ellipses. Such a shape 15th offers the advantage that a large number of different diameters or widths 20th the opening 11 in a form 15th the opening 11 be united. In particular, this remains in spite of any possible entry of solder material 28 into the opening 11 still a sufficiently large area of the opening 11 free so that water drainage can be guaranteed.

List of reference symbols

1

Heat exchanger

2

Pipeline

3

first fluid

4th

Direction of extension

5

Thermal conduction structure

6th

(upper) contact area

7th

(lower) contact area

8th

Heat exchanger area

9

second fluid

10

direction

11

opening

12th

Mounting position

13th

Direction of gravity

14th

height

15th

shape

16

first length

17th

first area

18th

second length

19th

width

20th

Expanse

21

second area

22nd

Motor vehicle

23

Cooling circuit

24

component

25th

Fluid line

26th

Surface normals

27

Angular range

28

Solder material

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10242188 A1 [0003, 0015]

Claims (10)

Heat exchanger (1), at least comprising • a plurality of pipelines (2) which run parallel to one another and can each be traversed by a first fluid (3), and • between two adjacent pipelines (2) a continuously extending heat conduction structure (5) along an extension direction (4) of the pipelines (2), alternating one pipeline (2) and the other pipeline (2) each with a contact area (6, 7), a heat exchanger area (8) being arranged between each two contact areas (6, 7), the heat-conducting structure (5) being supported by a second fluid (9) in a direction ( 10) can be overflowed; wherein the heat conducting structure (5) is made from a sheet metal material and has at least one opening (11) in at least one heat exchanger region (8), which opening is made by separating and removing part of the sheet metal material. Heat exchanger (1) Claim 1 , wherein the heat exchanger (1) has an installation position (12), wherein in the installation position (12) the pipes (2) extend transversely to a direction of gravity (13) and are arranged one behind the other along the direction of gravity (13) so that the Thermally conductive structure (5) extends alternately between an upper contact area (6) and a lower contact area (7), which are at least along the direction of gravity (13) spaced from one another by a height (14), the at least one opening (11) in a lower Third of the height (14) is arranged. Heat exchanger (1) Claim 2 , wherein the at least one opening (11) has a shape (15) which creates a capillary effect towards a liquid towards the lower contact area (7). Heat exchanger (1) according to one of the preceding claims, wherein the at least one opening (11) is arranged outside the contact area (6, 7). Heat exchanger (1) Claim 4 wherein the heat exchanger area (8) of the sheet metal material between two contact areas (6, 7) has a first length (16); wherein the at least one opening (11) is arranged outside a first area (17) which comprises the contact area (6, 7) and, starting from the contact area (6, 7), extends along the heat exchanger area (8) over a second length (18) ), the second length (18) being at least 5% of the first length (16). Heat exchanger (1) according to one of the preceding claims, wherein the at least one opening (11) has an elliptical shape (15). Heat exchanger (1) according to one of the preceding claims, wherein the sheet metal material extends along the direction (10) over a width (19), the at least one opening (11) or the openings ( 11) together extend over a maximum of 50% of the width (19). Heat exchanger (1) according to one of the preceding claims, wherein the at least one opening (11) has a width (20) of at least 0.7 millimeters. Heat exchanger (1) according to one of the preceding claims, wherein a structured second area (21) is provided in the heat exchanger area (8), which is produced by separating and reshaping the sheet material, the at least one opening (11) outside the structured second area (21) is arranged. Motor vehicle (22), at least comprising a cooling circuit (23) for temperature control of at least one component (24) of the motor vehicle (22); wherein the cooling circuit (23) has at least one fluid line (25) and a heat exchanger (1) according to one of the preceding claims, the pipes (2) of the heat exchanger (1) fluidly connected to the cooling circuit (23) and from that in the cooling circuit (23) circulating first fluid (3) can be flowed through.

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