DE102022002110A1 - Radiator for a motor vehicle, in particular for a motor vehicle, and motor vehicle - Google Patents

Abstract

The invention relates to a radiator (10) for a motor vehicle, with a plurality of line elements (12) which are arranged one after the other in the installed position of the radiator (10) in the vertical direction (14) of the vehicle and through which a coolant can flow, between which air channels (20) are arranged, which run along a respective flow direction (22) through which air can flow, have respective front ends (E1) which lie on a common, first cooler plane (24) of the cooler, have respective rear ends (E2) which are in a common, parallel to the first Radiator level (24), second cooler level (26) of the cooler lies, and extends along the flow direction (22) from their respective front ends (E1) to their respective rear ends (E2), the cooler levels (24, 26) in the installed position of the cooler (10) run obliquely to the vertical direction of the vehicle (14), with the respective flow direction (22) running obliquely to the respective radiator plane (24, 26).

Description

The invention relates to a radiator for a motor vehicle, in particular for a motor vehicle, according to the preamble of claim 1. Furthermore, the invention relates to a motor vehicle, in particular a motor vehicle, with at least one such radiator.

The DE 10 2005 021 676 A1 A fan of a motor vehicle can be seen as known, with a fan shroud connected to a ventilated heat exchanger surface of a heat exchanger and having a motor mount.

The object of the present invention is to create a radiator for a motor vehicle and a motor vehicle with such a radiator, so that particularly efficient operation of the radiator can be achieved.

This object is achieved by a cooler with the features of patent claim 1 and by a motor vehicle with the features of patent claim 9. Advantageous embodiments with useful developments of the invention are specified in the remaining claims.

A first aspect of the invention relates to a cooler, also referred to as a heat exchanger and designed as a heat exchanger, for a motor vehicle, also simply referred to as a vehicle, in particular a motor vehicle, and in particular a passenger car. This means that the motor vehicle, which is preferably designed as a motor vehicle, in particular as a passenger car, has the cooler, also known as a radiator, in its fully manufactured state. Furthermore, in its fully manufactured state, the motor vehicle has at least one component provided in addition to the cooler, which can include, for example, a drive motor for driving the motor vehicle. The drive motor is, for example, an internal combustion engine or an electric machine, so that the motor vehicle is designed, for example, as an electric vehicle or as a hybrid vehicle. The component can be cooled by means of a particularly liquid coolant, in particular by the coolant flowing through the component. As a result, heat can transfer from the component to the coolant. The radiator is used to cool the coolant. For this purpose, as will be explained in more detail below, heat can be transferred from the coolant flowing through the cooler to cooling air, also known as air, which flows to and around the cooler. In particular, the cooling air is ambient air from an environment of the motor vehicle, with the cooling air flowing towards and around the radiator, for example when the motor vehicle is moving forward. Furthermore, it is conceivable that the cooling air is conveyed by means of a fan that can in particular be operated electrically. The cooler has a plurality of line elements which are arranged one after the other in the vertical direction of the motor vehicle when the cooler is installed and through which the coolant can flow. The cooler assumes its installation position in the fully manufactured state of the motor vehicle, the cooler being held in the fully manufactured state of the motor vehicle and thus in the installed position of the cooler on a motor vehicle or on at least one corresponding component or a corresponding structural device of the motor vehicle. The respective line element is preferably a particularly inherently rigid solid body. The respective line element delimits a respective coolant channel, in particular directly, whereby the coolant can flow through the respective coolant channel and thus the respective line element. In particular, heat from the coolant flowing through the respective line element can be transferred to the respective line element.

Air channels through which the cooling air can flow are arranged between the line elements. The respective air duct can be flowed through by the cooling air (air) along a respective, in particular straight, flow direction. The heat previously transferred from the coolant to the respective line element can thus be transferred from the respective line element to the air, which flows through the respective air duct, also simply referred to as a duct.

The respective air duct has a respective front end, at which, for example, the respective air duct begins when viewed in the longitudinal direction of the vehicle from front to back. In addition, the respective air duct has a respective rear end, at which the respective air duct ends when viewed in the longitudinal direction of the vehicle from front to rear. In particular, the respective air duct extends, in particular along the flow opening and/or straight, from the respective front end to its respective rear end or vice versa. Thus, for example, when the motor vehicle is moving forward, the cooling air can flow into the respective air duct at the respective front end or via the respective front end, then flow through the respective air duct and then at the respective rear end or via the respective rear end of the the respective air duct flow out of the air duct.

The front ends of the air ducts are located in a common, first cooler level of the Küh lers. The rear ends of the air ducts lie in a common, second cooler level of the cooler, with the second cooler level running parallel to the first cooler level and in particular being spaced from the first cooler level along the respective flow direction. Thus, for example, the cooling air can flow into the air ducts, in particular in parallel or simultaneously, in the first cooler level and, in particular in parallel or simultaneously, flow out of the air ducts in the second cooler level, in particular during the aforementioned forward travel of the motor vehicle.

Furthermore, it is provided that the radiator plane in the installed position of the radiator runs obliquely to the vertical direction of the vehicle and also obliquely to the longitudinal direction of the vehicle and, for example, parallel to the transverse direction of the vehicle. For example, the respective radiator level extends in the longitudinal direction of the vehicle from front to back from front to back to bottom or from front to top to bottom.

In order to be able to realize a particularly efficient and low-efficiency operation of the cooler, it is provided according to the invention that the respective flow direction runs obliquely to the respective cooler plane. In this way, in comparison to conventional solutions in which the respective flow opening runs perpendicular to the respective cooler level, excessive deflections of the air can be avoided, particularly when the air flows into the air ducts and/or when the air flows out of the air ducts, so that excessive flow losses and/or an excessive pressure loss of the cooling air can be avoided. Due to the oblique course of the radiator plane relative to the longitudinal direction of the vehicle, a space-saving arrangement or positioning of the radiator, particularly in the motor vehicle, can also be ensured.

The invention is based in particular on the assumption that, for example, during the aforementioned forward travel of the motor vehicle, the cooling air flows relative to the radiator at least substantially in the vehicle's longitudinal direction, that is, parallel to the vehicle's longitudinal direction and in particular from front to rear. If the respective flow direction were to run perpendicular to the respective radiator level, as in conventional solutions, the cooling air, which initially flows parallel to the longitudinal direction of the vehicle, would have to be redirected in order to guide the cooling air into the air ducts. This would lead to flow losses or an excessive loss of pressure in the cooling air, which can now be avoided. This is particularly advantageous if the cooler is part of a multi-layer or multi-layered cooling module, in which several heat exchangers, such as the cooler mentioned, are arranged one behind the other, that is to say one after the other, and in particular have the same size.

And in order to be able to cool the coolant particularly effectively and efficiently by means of the cooler, it is provided in one embodiment of the invention that the respective flow direction in the installed position of the cooler runs parallel to the longitudinal direction of the vehicle and thus perpendicular to the vertical direction of the vehicle and perpendicular to the transverse direction of the vehicle.

A further embodiment is characterized in that the cooler has at least one side element common to the line elements, which is also referred to as a fluid box or water box, for example. Line elements can be supplied with the coolant via the side element. Alternatively or additionally, the coolant can be removed from the line elements via the side element. For example, the coolant can have at least water, so that the coolant is also referred to as cooling water, for example, or is designed as cooling water. For example, the line elements are connected to the side element. The side element is also referred to as a tube sheet. In particular, it is conceivable that the side element is designed as a stamped and bent part.

In order to be able to realize particularly efficient operation, it is provided in a further embodiment of the invention that an upper side of the side element that points upwards in the vehicle's vertical direction when the cooler is installed and/or an underside of the side element that points downwards in the vehicle's vertical direction when the cooler is installed in one Level runs, which runs obliquely to the respective cooler level. This makes it possible to avoid excessive deflection of air, which flows on and around the top or bottom side, for example during the aforementioned forward travel of the motor vehicle, so that excessive pressure losses can be avoided.

In order to be able to realize particularly efficient operation, it is provided in a further embodiment of the invention that the plane in the installed position of the cooler runs parallel to the longitudinal direction of the vehicle and/or perpendicular to the vertical direction of the vehicle. This makes it particularly easy to avoid excessive turbulence and thus pressure losses in the air.

A further embodiment is characterized by the fact that cooling is carried out in the respective air duct fins are arranged, via which heat can be transferred from the respective line element to the cooling air flowing through the respective air duct and thereby flowing around the respective cooling fin. The cooling fins thus ensure an increase in the surface area of the line elements. The line elements are preferably made of a metallic material in order to be able to ensure a particularly advantageous heat exchange between the line elements and the cooling air. Furthermore, it has proven to be particularly advantageous if the respective cooling fin is formed from a metallic material, in particular from the same metallic material as the line elements, whereby a particularly advantageous heat exchange between the cooling air and the respective cooling fin can be ensured. This ensures effective and efficient operation of the cooler.

In a particularly advantageous embodiment of the invention, the respective air duct in the installed position of the cooler is limited upwards in the vehicle's vertical direction by exactly a first of the line elements and downwards in the vehicle's vertical direction by exactly a second of the line elements. This means that the number of parts and therefore the costs of the cooler can be kept particularly low.

In order to be able to cool the coolant particularly effectively and efficiently by means of the cooler, a further embodiment of the invention provides that the respective air duct in the installed position of the cooler is limited upwards in the vertical direction of the vehicle by several first of the line elements, with the respective air duct in the installed position of the Radiator is limited downwards in the vertical direction of the vehicle by several second line elements. The first line elements are arranged sequentially along the respective flow direction, with the second line elements being arranged sequentially along the respective flow direction.

A second aspect of the invention relates to a motor vehicle, preferably designed as a motor vehicle, in particular as a passenger car, which has at least one radiator according to the first aspect of the invention. Advantages and advantageous refinements of the first aspect of the invention are to be viewed as advantages and advantageous refinements of the second aspect of the invention and vice versa.

In particular, it is conceivable that the cooler is part of a cooling module. The cooling module can, for example, have a fan that can be operated in particular electrically, by means of which, for example, the cooling air can be conveyed in particular along the flow direction.

Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing. The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and/or shown in the figures alone can be used not only in the combination specified in each case, but also in other combinations or on their own, without the scope of to abandon invention.

• 1 ausschnittsweise eine schematische und geschnittene Seitenansicht einer ersten Ausführungsform eines Kühlers für ein Kraftfahrzeug; und
• 2 ausschnittsweise eine schematische und geschnittene Seitenansicht einer zweiten Ausführungsform des Kühlers; und
• 3 eine schematische Explosionsansicht eines Kühlmoduls mit dem Kühler; und
• 4 ausschnittsweise eine schematische und geschnittene Seitenansicht einer dritten Ausführungsform des Kühlers.

The drawing shows in:

• 1 a detail of a schematic and sectioned side view of a first embodiment of a radiator for a motor vehicle; and
• 2 a detail of a schematic and sectioned side view of a second embodiment of the cooler; and
• 3 a schematic exploded view of a cooling module with the cooler; and
• 4 a detail of a schematic and sectioned side view of a third embodiment of the cooler.

In the figures, identical or functionally identical elements are provided with the same reference numerals.

1 shows a detail in a schematic and sectioned side view of a radiator 10 for a motor vehicle, in particular for a motor vehicle such as a passenger car. The cooler 10 is a heat exchanger and is therefore also referred to as a heat exchanger. In its fully manufactured state, the motor vehicle has the cooler 10 and at least one further component provided in addition to the cooler 10, for example the cooler 10 and the component being arranged in a cooling circuit. The cooling circuit can be flowed through by a particularly liquid coolant, which has, for example, at least water and is therefore also referred to as cooling water. Using the coolant, the component can be cooled by transferring heat from the component to the coolant. As will be explained in more detail below, the coolant can be cooled by means of the cooler 10 by transferring heat from the coolant flowing through the cooler 10 to the cooler 10 and from the cooler 10 to cooling air, also simply referred to as air, which passes to the cooler 10 - and flows around. The cooler points to this 10 several line elements 12 arranged one after the other in the installed position of the cooler 10 in the vertical direction of the vehicle. 1 shows a first embodiment of the cooler 10. In the first embodiment, the line elements 12 each have an at least substantially rectangular cross section, in particular viewed in a sectional plane which is spanned by the vehicle's longitudinal direction and the vehicle's vertical direction. The radiator 10 assumes its installation position in the completely manufactured state of the motor vehicle equipped with the radiator 10, whereby in 1 the installation position of the cooler 10 is shown. In 1 the vehicle vertical direction is illustrated by a double arrow 14, the vehicle longitudinal direction is illustrated by a double arrow 16 and the vehicle transverse direction is illustrated by a double arrow 18, the latter being perpendicular to the image plane of 1 runs. It can be seen that the vehicle longitudinal direction runs perpendicular to the vehicle vertical direction and perpendicular to the vehicle transverse direction, with the vehicle transverse direction running perpendicular to the vehicle vertical direction and perpendicular to the vehicle longitudinal direction. In particular, the respective line element 12 can be flowed through by the coolant along a flow direction, the flow direction running parallel to the vehicle transverse direction and thus perpendicular to a directional plane which is or is spanned by the vehicle longitudinal direction and the vehicle vertical direction.

Respective air channels 20 of the cooler 10 are arranged between the line elements 12. The respective air duct 20 is along a respective, in 1 The flow direction illustrated by a double arrow 22 can be flowed through by the cooling air, also simply referred to as air. In other words, when the motor vehicle is moving forward, for example, the cooling air flows through the respective air duct 20 along the flow direction.

The respective air duct 20 has a respective, front end E1 and a respective, rear end E2, with the respective air duct 20, in particular straight or rectilinear, along the respective, in particular straight, flow direction from the respective, front end E1 to the respective rear end E2 of the respective air duct 20 extends. The ends E1 of the air ducts 20 lie in an imaginary, first cooler level 24 of the cooler 10, and the respective, second ends E2 of the air ducts 20 lie in a common, imaginary, second cooler level 26 of the cooler 10. As well 1 can be seen, the cooler levels 24 and 26 run parallel to one another. The cooling air can thus flow into the respective air duct 20 in the cooler level 24 via the respective front end E1 and then flow through the respective air duct 20. After flowing through the respective air duct 20, the cooling air can flow out of the respective air duct 20 in the cooler level 26 via the respective end E2. From the coolant flowing through the respective line element 12, heat can be transferred from the coolant to the respective line element 12. In addition, the heat from the respective line element 12 can be transferred to the air that flows through the respective air duct 20. This cools the coolant.

It can be seen that the cooler levels 24 and 26 in the in 1 shown installation position of the cooler 10 obliquely to the vertical direction of the vehicle and thus also obliquely to the longitudinal direction of the vehicle and at least essentially parallel to the transverse direction of the vehicle.

In order to avoid excessive flow or pressure losses, in particular of the cooling air, and thus to be able to realize a particularly efficient and efficient operation of the cooler 10 and/or the motor vehicle as a whole, it is provided in the cooler 10 that the respective flow direction (double arrow 22) is oblique to the respective cooler level 24, 26 runs. In addition, the respective flow direction in the installed position of the cooler 10 runs parallel to the vehicle's longitudinal direction and thus perpendicular to the vehicle's vertical direction and perpendicular to the vehicle's transverse direction.

In 1 It can also be seen that the cooler 10 has at least one side element 28 which is common to the line elements 12 and is also referred to as a raw base, for example, which can be designed, for example, as a stamped and bent part. The line elements 12 are supplied with the coolant, for example via the side element 28. Alternatively or additionally, it is conceivable that the coolant can be removed from the line elements 12 via the side element. It can be seen that the side element 28 has an in 1 has a longitudinal extension direction illustrated by a double arrow 30, along which the side element 28 extends at least substantially elongated. The longitudinal direction of extension of the side element 28 runs obliquely to the longitudinal direction of the vehicle, obliquely to the vertical direction of the vehicle and obliquely to the transverse direction of the vehicle, especially in the installed position of the radiator 10. In order to be able to cool the coolant particularly effectively and efficiently, cooling fins 32 are arranged in the respective air duct 20, which, for example, are solid bodies be trained. The respective cooling fins 32 arranged in the respective air duct 20 can be flowed on and around by the air flowing through the respective air duct 20. The previously mentioned heat can therefore spread over a particularly large area from the respective Lei tung element 12 to the respective cooling fins 32 and from these to the air flowing through the respective air duct 20.

At the in 1 In the first embodiment shown, the respective air duct 20 is limited upwards in the installed position of the cooler 10 in the vehicle vertical direction (double arrow 14) by exactly a first of the line elements 12 and downwards in the vehicle vertical direction by exactly a second of the line elements. For example, the respective line element 12 is a respective lamella, in particular at least essentially rectangular in cross section. The respective line element 12 is also referred to as a tube.

2 shows a detail in a schematic and sectioned side view of a second embodiment of the cooler 10. In the second embodiment it is provided that the respective air duct 20 in the installed position of the cooler 10 in the vehicle vertical direction upwards through several, in this case exactly two first, of the line elements 12 and in the vehicle vertical direction is limited downwards by several, in this case exactly two, second line elements 12. The first line elements 12 are arranged sequentially along the respective flow direction, and the respective second line elements 12 are arranged sequentially along the flow direction.

3 shows a schematic exploded view of a cooling module 34, which includes the cooler 10. In 3 an arrow 36 illustrates the cooling air mentioned, which initially flows in the direction of the cooler or the cooling module 34 and thereby parallel to the longitudinal direction of the vehicle, the arrow 36 illustrating a flow of the cooling air upstream of the cooler 10. In contrast, illustrate in 3 Arrows 38 show the cooling air on its way through the air channels 20, also known as cooling channels. In other words, the arrows 38 illustrate the air flowing through the respective air channels. Based on the arrows 36 and 38 it can be clearly seen that the cooling air is not deflected on its way to, into and through the air ducts 20, but rather at least essentially parallel to it both upstream of the cooler 10 and on its way through the air ducts 20 Flows in the longitudinal direction of the vehicle. In particular, the cooling air is not deflected into the air channels 20 as it flows in via the ends E1, so that excessive flow or pressure losses can be avoided.

• - Optimierung des Druckverlusts durch Reduktion von Umlenkungen
• - Optimierung des Bauraumbedarfs und des Gewichts
• - Anpassung an die individuelle Lage des Kühlmoduls 34, insbesondere im Kraftfahrzeug
• - Individualisierung der Anströmung und Abströmung innerhalb des Kühlmoduls 34

Finally shows 4 a third embodiment of the cooler 10. In the third embodiment, in the installed position of the cooler 10, an upper side 40 of the side element 28, which points upwards in the vehicle's vertical direction, runs in an imaginary plane 42, which runs perpendicular to the vehicle's vertical direction and parallel to the vehicle's transverse direction. This makes it particularly advantageous to avoid excessive flow or pressure losses. The cooler 10 makes it possible to realize at least the following advantages in particular compared to conventional solutions:

• - Optimization of pressure loss by reducing deflections
• - Optimization of the installation space requirements and weight
• - Adaptation to the individual position of the cooling module 34, especially in the motor vehicle
• - Individualization of the inflow and outflow within the cooling module 34

Furthermore, it is conceivable that, compared to conventional solutions, the power of a fan for conveying the cooling air can be reduced, in particular in that the pressure loss of the cooling air in the cooler 10 can be reduced compared to conventional solutions.

Reference symbol list

10

cooler

12

Line element

14

Double arrow

16

Double arrow

18

Double arrow

20

Air duct

22

Double arrow

24

first cooler level

26

second cooler level

28

Page element

30

Double arrow

32

cooling fin

34

Cooling module

36

Arrow

38

Arrow

40

Top

42

End

E1

front end

E2

rear end

QUOTES INCLUDED IN THE DESCRIPTION

This list of 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.

Cited patent literature

• DE 102005021676 A1 [0002]

Claims (9)

Radiator (10) for a motor vehicle, with several line elements (12) which are arranged one after the other in the installed position of the radiator (10) in the vertical direction (14) of the vehicle and through which a coolant can flow, between which air channels (20) are arranged, which are arranged along a respective flow direction ( 22) can be flowed through by air, have respective front ends (E1) which lie on a common, first cooler level (24) of the cooler, have respective rear ends (E2) which are in a common, parallel to the first cooler level (24) extending, second cooler level (26) of the cooler, and extend along the flow direction (22) from their respective front ends (E1) to their respective rear ends (E2), the cooler levels (24, 26) being in the installed position of the cooler (10) run obliquely to the vertical direction of the vehicle (14), characterized in that the respective flow direction (22) runs obliquely to the respective radiator plane (24, 26). Cooler (10). Claim 1 , characterized in that the respective flow direction (22) runs parallel to the longitudinal direction of the vehicle (16) in the installed position of the cooler (10). Cooler (10). Claim 1 or 2 , characterized by at least one side element (28) common to the line elements (12), via which the line elements (12) can be supplied with the coolant and / or the coolant can be removed from the line elements (12). Cooler (10). Claim 3 , characterized in that an upper side (40) of the side element (28) points upwards in the vehicle vertical direction (14) when the cooler (10) is installed and/or an underside points downwards in the vehicle vertical direction (14) when the cooler (10) is installed of the side element (28) runs in a plane (42) which runs obliquely to the respective cooler plane (24, 26). Cooler (10). Claim 4 , characterized in that the plane (42) in the installed position of the cooler (10) runs parallel to the vehicle's longitudinal direction (16) and/or perpendicular to the vehicle's vertical direction (14). Cooler (10) according to one of the preceding claims, characterized in that cooling fins (32) are arranged in the respective air duct (20), via which heat from the respective line element (12) flows through the respective air duct (20) and thereby the Air flowing around the respective cooling fin (32) can be transferred. Cooler (10) according to one of the preceding claims, characterized in that the respective air duct (20) in the installed position of the cooler (10) in the vehicle vertical direction (14) upwards through exactly a first of the line elements (12) and in the vehicle vertical direction (14). is limited at the bottom by exactly a second of the line elements (12). Radiator (10) according to one of the Claims 1 until 6 , characterized in that the respective air duct (20) in the installed position of the cooler (10) in the vehicle vertical direction (14) upwards through several first of the line elements (12) and in the vehicle vertical direction (14) downwards through several second of the line elements (12 ) is limited, wherein the first line elements (12) are arranged sequentially along the flow direction (22), and wherein the second line elements (12) are arranged sequentially along the flow direction (22). Motor vehicle, with at least one radiator (10) according to one of the preceding claims.

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