Cooler assembly arrangement for a motor vehicle having a plurality of heat exchanger and motor

Abstract

The invention relates to a cooler assembly arrangement (10) for an internal combustion engine-driven or at least partially electrically driven motor vehicle, comprising: a first heat exchanger (12) which is fluidically connected to a coolant circuit (14) of the motor vehicle; a second heat exchanger (16) which is fluidically connected to a refrigerant circuit (18) of the motor vehicle; a third heat exchanger (20) which is fluidically connected to a refrigerant circuit (18) of the motor vehicle; and an air supply device (22) which is designed to guide air, in particular ambient air, to the first heat exchanger (12), the second heat exchanger (16) and the third heat exchanger (20). According to the invention, the second heat exchanger (16) and the third heat exchanger (20) are arranged in series with respect to the main air flow direction (HS) in the air supply device (22). The invention further relates to a motor vehicle having such a cooler assembly arrangement (10).

Description

Technical Field

[0001] The invention relates to a cooler assembly arrangement for a motor vehicle driven by an internal combustion engine or at least partially electrically, which has a first heat exchanger which is fluidically connected to a coolant circuit of the motor vehicle and a second heat exchanger which is fluidically connected to a refrigerant circuit of the motor vehicle. Background Art

[0002] It is known from the prior art to use and arrange a plurality of heat exchangers in motor vehicles.

[0003] Reference is made, for example, to DE 10 2015 015 125 A1, in which three heat exchangers are arranged one behind the other with reference to the air flow direction and are each connected in terms of flow to the same refrigerant circuit.

[0004] Different heat exchanger arrangements for different cooling fluid circuits of a fuel cell vehicle are known from DE 10 2016 119 440 A1.

[0005] From DE 196 44 583 A1 an air-conditioning device for a motor vehicle having a plurality of heat exchangers is known.

[0006] In modern motor vehicles, heat exchangers are arranged or mounted in so-called cooler assemblies. To date, such cooler assemblies have been designed, in particular for electrically driven motor vehicles, with two heat exchangers, in particular a first heat exchanger which is fluidically connected to a coolant circuit of the motor vehicle (in particular for cooling the electric drive and / or power electronics, but also for (passive) cooling of batteries) and a second heat exchanger which is fluidically connected to a refrigerant circuit of the motor vehicle (in particular for air conditioning, but also for (active) cooling of batteries). The two heat exchangers are usually arranged in such a way that they overlap or overlap substantially over their entire surface.

[0007] In particular, in electrically driven motor vehicles, the requirements for cooling capacity increase due to the possibility of rapid charging. In addition, refrigeration systems, in particular refrigeration systems with supercritically operating refrigerants, are very temperature sensitive, wherein insufficient cooling of the refrigerant in heat exchangers operating as gas coolers / condensers has a negative impact on the cooling capacity and also on the efficiency of the refrigeration system. It should also be taken into account that, depending on the design of the refrigeration system or cooler assembly with heat exchangers arranged in series on the air side, insufficient capacity or efficiency may occur in the refrigeration system, which also affects passenger comfort and driving range. Summary of the invention

[0008] The object of the present invention is to provide a cooler assembly arrangement with which the above-mentioned disadvantages can be reduced or avoided.

[0009] This object is achieved by a radiator assembly arrangement and a motor vehicle having the features of the respective independent claim. Advantageous embodiments with expedient developments are specified in the dependent claims.

[0010] A cooler assembly arrangement for a motor vehicle driven by an internal combustion engine or at least partially electrically driven is proposed herein, the cooler assembly arrangement comprising a first heat exchanger fluidically connected to a coolant circuit of the motor vehicle, a second heat exchanger fluidically connected to a refrigerant circuit of the motor vehicle, a third heat exchanger fluidically connected to a refrigerant circuit of the motor vehicle, and an air conveying device designed to guide air, in particular ambient air, to the first heat exchanger, the second heat exchanger and the third heat exchanger, wherein the second heat exchanger and the third heat exchanger are arranged in series with one another with reference to a main flow direction of the air in the air conveying device.

[0011] By means of the second heat exchanger and the third heat exchanger through which the refrigerant of the refrigerant circuit or refrigeration system flows, sufficient cooling of the refrigerant in the refrigerant circuit can be achieved, so that insufficient power or efficiency can be avoided. If the second heat exchanger and the third heat exchanger are flowed through by the refrigerant in succession, the refrigerant is first applied to the third heat exchanger and then to the downstream second heat exchanger. Alternatively, a solution in which the second heat exchanger and the third heat exchanger are flowed through in parallel is also conceivable.

[0012] In the cooler assembly arrangement, the first heat exchanger can be arranged in series with at least one of the two further heat exchangers with reference to the main air flow direction. In other words, the first heat exchanger connected to the coolant circuit can be arranged before / upstream, between or after / downstream of two further heat exchangers connected to the refrigerant circuit. It is also conceivable that the first heat exchanger and, for example, the second heat exchanger are acted upon in parallel with reference to the main air flow direction, while the third heat exchanger is arranged, for example, in series with the first and second heat exchangers (particularly downstream).

[0013] In the cooler assembly arrangement, the first heat exchanger can be a cryocooler, while the second and third heat exchangers can be designed as refrigerant condensers or gas coolers. Here, the third heat exchanger can also be referred to as the first gas cooler or condenser, and the second heat exchanger can also be referred to as the second gas cooler or condenser. Here, the third heat exchanger (first gas cooler / condenser) and the second heat exchanger (second gas cooler / condenser) are so integrated into the refrigerant circuit that heat dissipation or pre-cooling of the refrigerant is achieved in the third heat exchanger (first gas cooler / condenser), and the final stage of cooling of the refrigerant is achieved in the second heat exchanger (second gas cooler / condenser).

[0014] In the cooler assembly arrangement, based on the main air flow direction, the order of the heat exchangers can be implemented as follows:

[0015] The first heat exchanger is in front of the second heat exchanger, and the second heat exchanger is in front of the third heat exchanger (Configuration I); or

[0016] The second heat exchanger is before the first heat exchanger and the first heat exchanger is before the third heat exchanger (Configuration II); or

[0017] The second heat exchanger precedes the third heat exchanger, which precedes the first heat exchanger (configuration III).

[0018] Here, the (first) configuration I is particularly an optimal arrangement for cooling the coolant circuit (water circuit). The (second) configuration II is particularly an optimal arrangement for cooling the refrigerant circuit. The (third) configuration III is particularly a compromise for cooling the coolant circuit and the refrigerant circuit.

[0019] In the cooler assembly arrangement, each heat exchanger can have a base area facing the main flow direction of the air, wherein the base areas of all heat exchangers are substantially of the same size; or

[0020] Each heat exchanger has a base surface that differs from at least one base surface of one of the other heat exchangers.

[0021] By selecting heat exchangers of different sizes or different base areas, the cooling performance of the respective coolant circuit or refrigerant circuit can be influenced.

[0022] In this case, in the cooler arrangement, the last heat exchanger can have the largest base surface, based on the main air flow direction, which is in particular larger than at least one base surface of one of the heat exchangers arranged before the last heat exchanger. In this configuration, the fact is taken into account that the air at the rearmost or last heat exchanger based on the main air flow direction has a higher temperature than the ambient temperature due to the previous passage through other heat exchangers.

[0023] In the cooler assembly arrangement, each heat exchanger can be designed in such a way that each heat exchanger is designed with at least one coolant overflow or refrigerant overflow, in particular in a multi-overflow manner and with a corresponding outlet overflow.

[0024] Preferably, a plurality of overflows for the coolant or refrigerant are provided in each heat exchanger, which overflows can also be referred to as component-internal fluid deflections.

[0025] In the cooler assembly arrangement, at least the last heat exchanger, based on the main air flow direction, can have an outlet overflow through which no air flows. Thus, the coolant or refrigerant circulating in the last heat exchanger in question can be sufficiently cooled in the area of ​​the outlet overflow despite its location behind two further heat exchangers. A corresponding structural design of the heat exchangers can also ensure that, in addition to the last heat exchanger, the penultimate or intermediate heat exchanger can also have a last overflow through which no ambient air flows.

[0026] In the cooler assembly arrangement, two heat exchangers which overlap at least partially and are arranged one after the other with reference to the main air flow direction can be arranged so that their respective outlet overflows substantially coincide. This also has a positive effect on the overall cooling performance of the refrigerant circuit or coolant circuit.

[0027] In the cooler assembly arrangement structure, the second heat exchanger and the third heat exchanger, both of which are connected to the refrigerant circuit fluid, can be arranged so that one of the two heat exchangers forms the frontmost heat exchanger, to which air is applied substantially over its entire surface, and the other of the two heat exchangers (i.e., completely or partially) substantially overlaps with the frontmost heat exchanger.

[0028] A motor vehicle with an internal combustion engine drive or at least partially electric drive can be designed with the above-described cooler assembly arrangement. The motor vehicle can in particular be a pure electric motor vehicle, which can also be referred to as a pure electric vehicle (BEV).

[0029] In a motor vehicle, the first heat exchanger (low-temperature cooler) can in particular be connected to a coolant circuit which cools an electric drive and / or an electric storage device of the motor vehicle.

[0030] In a motor vehicle, the second and third heat exchangers (gas coolers or condensers) can be connected to a refrigerant circuit for vehicle air conditioning. Such a refrigerant circuit can be designed with or without a heat pump function.

[0031] It is conceivable to arrange at least one further heat exchanger in the motor vehicle, which is connected to the coolant circuit and the refrigerant circuit for the purpose of transferring heat between the coolant circuit and the refrigerant circuit, for example in the form of a so-called refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Further advantages and details of the invention emerge from the following description of embodiments with reference to the drawings.

[0033] The accompanying drawings show:

[0034] Figure 1 In sub-figures A) to E) one embodiment of a cooler assembly arrangement and various sub-variants are shown simplified and schematically;

[0035] Figure 2 A further embodiment of a cooler assembly arrangement and various sub-variants are shown simplified and schematically in sub-figures A) to D);

[0036] Figure 3 A further embodiment of a cooler assembly arrangement and various sub-variants are shown in simplified and schematic form in sub-figures A) to E). DETAILED DESCRIPTION

[0037] exist Figure 1 A shows a simplified schematic diagram of a cooler assembly arrangement 10 for a motor vehicle (not shown) driven by an internal combustion engine or at least partially electrically driven. The cooler assembly arrangement comprises a first heat exchanger 12 which is fluidically connected to a coolant circuit 14 of the motor vehicle. In addition, the cooler assembly arrangement 10 has a second heat exchanger 16 which is fluidically connected to a refrigerant circuit 18 of the motor vehicle. The cooler assembly arrangement 10 comprises a third heat exchanger 20 which is likewise fluidically connected to the refrigerant circuit 18 of the motor vehicle.

[0038] Such a cooler assembly arrangement may also include at least one cooler fan for drawing or pushing ambient air flow through the heat exchanger module. Other heat exchangers may also be components of the cooler assembly arrangement. For clarity, other heat exchangers are not shown.

[0039] exist Figures 1 to 3The heat exchangers 12, 16, 20 shown in the drawings each have their own hatching, which remains unchanged in all the examples in the drawings. In other words, the first heat exchanger 12 is always hatched with diagonal lines, the second heat exchanger 16 is always hatched with vertical lines, and the third heat exchanger 29 is always hatched with cross-hatching. It should be noted that the designation of the first, second and third heat exchanger is only used to enable a consistent designation of the individual heat exchangers, and does not necessarily mean that the heat exchangers 12, 16, 20 are numbered in this order, which can be seen in particular from Figure 2 and Figure 3 As can be seen in the example.

[0040] exist Figures 1 to 3 In all embodiments of the present invention, the first heat exchanger 12 can be a low-temperature cooler, which is particularly connected to a cooling liquid circuit, preferably a cooling water circuit. The second heat exchanger 16 and the third heat exchanger 20 can be designed as refrigerant condensers or gas coolers, which are arranged in one or the same refrigerant circuit 18. Here, based on the circulation direction ZR of the refrigerant in the refrigerant circuit 18, the third heat exchanger 20 is accordingly arranged in front of the second heat exchanger 16, that is, upstream. This can be seen in particular from Figure 1 A. Figure 2 A and Figure 3 A can be seen in the simplified diagram.

[0041] With the help of Figure 1 A and Figure 1 The outline arrows shown in B show an air conveying device 22, which is designed to guide air, in particular ambient air, to the first heat exchanger 12, the second heat exchanger 16 and the third heat exchanger 20. The second heat exchanger 16 and the third heat exchanger 20 are arranged in series with each other with reference to the main air flow direction HS in the air conveying device. Figure 2 A and Figure 3 The same outline arrows are also shown in each case in A. The air can be conveyed passively by the travel wind and / or actively by at least one fan (not shown here).

[0042] Figure 1 B shows an example in which the three heat exchangers 12, 16, 20 are designed to be substantially of the same size in terms of their incident flow areas. In other words, the base surfaces of the heat exchangers 12, 16, 20, which are shown simplified as rectangles here, substantially completely overlap.

[0043] Figure 1C shows an example in which the first heat exchanger 12 (low temperature cooler) has a smaller base surface than the two other heat exchangers 16, 20 (gas coolers or refrigerant condensers). The second heat exchanger 16 and the third heat exchanger 20 have substantially the same base surface. The first heat exchanger 12 is arranged offset relative to the second heat exchanger 16. In particular, a gap 24 is left below the first heat exchanger 12, through which a part of the air volume can flow directly to the second heat exchanger 16 without being preheated in the first heat exchanger 12. As a result, the cooling performance can be improved overall, but in particular with respect to the second heat exchanger 16 and / or the third heat exchanger 20 connected downstream of the first heat exchanger 12 on the air side.

[0044] Figure 1 D shows an example in which the first heat exchanger 12 and the second heat exchanger 16 have a smaller base area than the third heat exchanger 20. In this example, the first heat exchanger 12 and the second heat exchanger 16 are arranged one above the other in front of the third heat exchanger 20 on the air side.

[0045] Figure 1 E shows an example in which the base surface of the first heat exchanger 12 is smaller than the base surface of the second heat exchanger 16. The second heat exchanger 16 has a smaller base surface than the third heat exchanger 20. The three heat exchangers 12, 16, and 20 are arranged relative to each other in a manner that the base surfaces partially overlap. A gap 24 is reserved below the first heat exchanger 12, and a gap 26 is reserved below the second heat exchanger 16, through which a part of the air volume can flow directly to the second heat exchanger 16 and the third heat exchanger 20. This can improve the cooling performance as a whole.

[0046] The vertical arrangement of the heat exchangers also depends on how the corresponding media flows through the interior of these heat exchangers. If the media flows from top to bottom, then Figure 1 The arrangement shown in E is advantageous. However, if the medium flows through at least one of the heat exchangers 12, 16, 20 in a different manner, i.e., for example, from bottom to top, then the arrangement of the heat exchangers relative to each other or the optimal position of the heat exchangers in the cooler assembly arrangement can be adjusted accordingly, especially in the case of different sizes, to achieve an optimal cooling effect.

[0047] Likewise, the third heat exchanger 20 can also be designed to be smaller than the two upstream heat exchangers 12 , 16 , so that it always completely or partially overlaps the two upstream heat exchangers, but this is not shown in any more detail here.

[0048] In Figure 1With reference to the circulation direction ZR of the refrigerant in the refrigerant circuit 18 and the circulation direction ZRK of the coolant in the coolant circuit 14 shown in the figure, it should be noted that the three heat exchangers 12, 16, and 20 can be arranged relative to each other so that the corresponding outlet overflow parts of the coolant or refrigerant are either not flowed through by air, or are arranged downstream of the outlet overflow parts of the adjacent heat exchangers based on the main air flow direction HS.

[0049] For all heat exchangers 12 , 16 , 20 it should be pointed out that the heat exchanger can optionally have a greater depth (through which the air flows) in the case of a smaller base surface in order to at least partially compensate for this reduced base surface with regard to the cooling performance.

[0050] from Figure 1 It can be seen from the examples in that the first heat exchanger 12 is arranged in series with at least one of the two further heat exchangers 16, 20 with reference to the main air flow direction HS. Figure 1 B. Figure 1 C and Figure 1 The example of E shows the following sequence: the first heat exchanger 12 precedes the second heat exchanger 16, and the second heat exchanger precedes the third heat exchanger 20, which can be referred to as Configuration I.

[0051] exist Figure 2 A shows a simplified schematic diagram of a cooler assembly arrangement 10 for a motor vehicle (not shown) driven by an internal combustion engine or at least partially electrically driven. The cooler assembly arrangement comprises a first heat exchanger 12 which is fluidically connected to a coolant circuit 14 of the motor vehicle. In addition, the cooler assembly arrangement 10 has a second heat exchanger 16 which is fluidically connected to a refrigerant circuit 18 of the motor vehicle. The cooler assembly arrangement 10 comprises a third heat exchanger 20 which is likewise fluidically connected to the refrigerant circuit 18 of the motor vehicle.

[0052] from Figure 2 It can be seen from the examples in that the first heat exchanger 12 is arranged in series with at least one of the two further heat exchangers 16, 20 with reference to the main air flow direction HS. Figure 2 B. Figure 2 C and Figure 2 The example of D shows the following sequence: the second heat exchanger 16 precedes the first heat exchanger 12, which precedes the third heat exchanger 20, which may also be referred to as configuration II.

[0053] Figure 2 B shows an example in which the three heat exchangers 12 , 16 , 20 are designed to be substantially of the same size in terms of their incident flow areas. In other words, the base surfaces of the heat exchangers 12 , 16 , 20 , which are shown simplified as rectangles here, substantially completely overlap.

[0054] Figure 2 C shows an example in which the second heat exchanger 16 (second gas cooler or refrigerant condenser) has a smaller base surface than the two other heat exchangers 12, 20 (low temperature cooler and gas cooler or refrigerant condenser). The first heat exchanger 12 and the third heat exchanger 20 have substantially the same base surface. The second heat exchanger 16 is arranged offset relative to the first heat exchanger 12. In particular, a gap 24 is left below the second heat exchanger 16, through which a part of the air volume can flow directly to the first heat exchanger 12 without being preheated in the second heat exchanger 16. The cooling performance can thereby be improved overall.

[0055] Figure 2 D shows an example in which the second heat exchanger 16 has a smaller base surface than the first heat exchanger 12. The first heat exchanger 12 in turn has a smaller base surface than the third heat exchanger 20. The three heat exchangers 12, 16, and 20 are arranged relative to each other so that the base surfaces partially overlap. Here, a gap 24 is left under the second heat exchanger 16, and a gap 26 is left under the first heat exchanger 12, through which a part of the air volume can flow directly to the first heat exchanger 12 and the third heat exchanger 20. This can improve the cooling performance as a whole.

[0056] Depending on the position of the outlet overflow of the medium at the heat exchanger, the gap 24 can also remain open, for example above a further heat exchanger connected downstream of the second heat exchanger 16, for example the first heat exchanger 12, through which the unconditioned (ambient) air partial volume can flow directly.

[0057] exist Figure 3 1 shows a simplified schematic diagram of a cooler assembly arrangement 10 for a motor vehicle (not shown) driven by an internal combustion engine or at least partially electrically driven. The cooler assembly arrangement comprises a first heat exchanger 12 which is fluidically connected to a coolant circuit 14 of the motor vehicle. In addition, the cooler assembly arrangement 10 has a second heat exchanger 16 which is fluidically connected to a refrigerant circuit 18 of the motor vehicle. The cooler assembly arrangement 10 comprises a third heat exchanger 20 which is likewise fluidically connected to the refrigerant circuit 18 of the motor vehicle.

[0058] from Figure 3 It can be seen from the examples in that the first heat exchanger 12 is arranged in series with at least one of the two further heat exchangers 16, 20 with reference to the main air flow direction HS. Figure 3 B. Figure 3 C. Figure 3 D and Figure 3The example of E shows the following sequence: the second heat exchanger 16 precedes the third heat exchanger 20, which precedes the first heat exchanger 12, which may also be referred to as configuration III.

[0059] Figure 3 B shows an example in which the three heat exchangers 12, 16, 20 are designed to be substantially the same size. In other words, the base areas of the heat exchangers 12, 16, 20, which are shown simplified as rectangles here, overlap substantially completely.

[0060] Figure 3 C shows an example in which the first heat exchanger 12 (low temperature cooler) has the largest base surface. The second heat exchanger 16 and the third heat exchanger 20 have substantially the same base surface. In this configuration, the second heat exchanger 16 is applied with (ambient) air over the entire surface or 100%. The second heat exchanger and the third heat exchanger themselves can be designed to have different or the same size in terms of the corresponding flow-through area, and corresponding gaps 24, 26 are formed below the second heat exchanger 16 and the third heat exchanger 20 so that the air can flow directly to the first heat exchanger 12.

[0061] Figure 3 D shows an example in which the first heat exchanger 12 (low temperature cooler) has a maximum base surface. The second heat exchanger 16 and the third heat exchanger 20 have different base surfaces, wherein the base surface of the second heat exchanger 16 can be greater than or equal to the base surface of the third heat exchanger 20. A gap 24 is formed above the second heat exchanger 16 so that air can flow directly to the third heat exchanger 20. A gap 26 is formed below the third heat exchanger so that air can flow directly from the second heat exchanger 16 to the first heat exchanger 12. In this configuration, the second heat exchanger 16 is applied with (ambient) air over its entire surface or 100%. In particular, in this application example, the outlet overflow of the medium in the third heat exchanger 20 can be optionally located above.

[0062] Figure 3 E shows an example in which the first heat exchanger 12 (low temperature cooler) has the largest base surface. The second heat exchanger 16 and the third heat exchanger 20 have different base surfaces, wherein the base surface of the second heat exchanger 16 is larger than the base surface of the third heat exchanger 20. In this configuration, the second heat exchanger 16 is exposed to (ambient) air over the entire surface or 100%. Corresponding gaps 24, 26 are formed below the second heat exchanger 16 and the third heat exchanger 20 so that air can flow directly to the first heat exchanger 12.

[0063] Combination Figures 1 to 3 With regard to all the above examples of different configurations of the cooler assembly arrangement 10 described, the following features may also apply to a single, a plurality or all heat exchangers 12 , 16 , 20 of the relevant cooler assembly arrangement.

[0064] All heat exchangers may have flow areas of the same size. Furthermore, at least one of the heat exchangers may have a flow area different from that of the other heat exchangers. Finally, all heat exchangers may have flow areas different from that of the other heat exchangers.

[0065] The last heat exchanger has the largest base surface, with reference to the main air flow direction HS. The base surface of the last heat exchanger is in particular larger than at least one base surface of one of the heat exchangers arranged upstream thereof.

[0066] In the described cooler assembly arrangement 10, each heat exchanger 12, 16, 20 can be configured so that it is designed with at least one coolant overflow or refrigerant overflow. In particular, the heat exchanger can also be designed in a multi-overflow manner and designed with corresponding outlet overflows.

[0067] In various cooler assembly arrangements 10, the last heat exchanger, with reference to the main air flow direction HS, can have an outlet overflow through which no air flows. This applies in particular to Figure 1 E. Figure 2 D. Figure 3 C and Figure 3 Example of E.

[0068] Furthermore, in various cooler assembly arrangements 10, two heat exchangers which at least partially overlap and are arranged one after the other with reference to the main air flow direction HS can be arranged such that their respective outlet overflows substantially coincide. Figure 1 A. Figure 2 A and Figure 3 A shows in simplified form the circulation direction ZR (refrigerant circuit 18 ) and the circulation direction ZRK (coolant circuit 14 ), which applies to all the examples shown.

[0069] exist Figure 2 and Figure 3 In the cooler assembly arrangement 10, the second heat exchanger 16 and the third heat exchanger 20, both of which are fluidly connected to the refrigerant circuit 18, are arranged so that one of the two heat exchangers 16 forms the frontmost heat exchanger, which is essentially entirely and firstly applied with (ambient) air, and the other heat exchanger 20 essentially overlaps with the frontmost heat exchanger 16.

[0070] The respective base surfaces of all heat exchangers 12, 16, 20 can be designed to have the same or different dimensions. In addition to or as an alternative to changing the base surface, the heat exchangers 12, 16, 20 can also have the same or different depths. In particular, a heat exchanger with a smaller base surface can have a greater depth, so that a reduction in the cooling performance of the relevant heat exchanger due to the reduction in the base surface can be at least partially compensated.

[0071] It is also possible to provide at least one fan device for each of the described embodiments of the cooler assembly arrangement 10, which has a pushing or suction effect on all heat exchangers 12, 16, 20 to allow air to flow through the cooler assembly arrangement. Additionally or alternatively, it is also possible to consider arranging (optionally additional) fan devices between two adjacent heat exchangers.

[0072] The above-described embodiments relate in particular to heat exchangers with substantially horizontal fluid guide structures, in particular in the second heat exchanger 16 and the third heat exchanger 20 (gas cooler or refrigerant condenser). However, the concepts presented here can also be applied to heat exchangers with substantially vertical fluid guide structures with corresponding adjustments. Figures 1 to 3 The gaps 24, 26 shown by way of example in the figure cannot be arranged above or below the corresponding heat exchanger, but are ideally arranged on the left or right side of the corresponding heat exchanger. In addition, heat exchangers can also be combined with different fluid guide structures and positioned in a correspondingly optimized manner relative to each other.

[0073] It is also necessary to add that, in addition to the above-mentioned embodiments of the horizontal fluid guiding structure in all heat exchangers and the above-mentioned case of the vertical fluid guiding structure in all heat exchangers, a combination scheme is also feasible. In particular, at least one heat exchanger may differ from the fluid guiding structures in the remaining heat exchangers in terms of the fluid guiding structure (vertical or horizontal). A mixed construction of horizontal and vertical fluid guiding structures can thereby be achieved. In particular, in the case of condensers and / or gas coolers, preferably in air heat pump applications, a vertical fluid flow structure can be used in order to assist in this way the discharge of liquid at or in the corresponding heat exchanger. In addition, it is also possible to use a component or heat exchanger that itself may have a so-called mixed fluid guiding structure, which has a horizontal fluid guiding part and a vertical fluid guiding part.

Claims

1. A cooler assembly arrangement (10) for a motor vehicle driven by an internal combustion engine or at least partially electrically, the cooler assembly arrangement comprising: a first heat exchanger (12) which is fluidically connected to a coolant circuit (14) of the motor vehicle, a second heat exchanger (16) which is fluidically connected to a refrigerant circuit (18) of the motor vehicle, a third heat exchanger (20) which is fluidically connected to a refrigerant circuit (18) of the motor vehicle, an air conveying device (22) which is designed to convey air, in particular ambient air, to the first heat exchanger (12), the second heat exchanger (16) and the third heat exchanger (20), in, The second heat exchanger (16) and the third heat exchanger (20) are arranged in series with one another with reference to a main air flow direction (HS) in the air conveying device (22).

2. The cooler assembly arrangement (10) according to claim 1, wherein: The first heat exchanger (12) is arranged in series with at least one of the two further heat exchangers (16, 20) with reference to the main air flow direction (HS).

3. The cooler assembly arrangement (10) according to claim 1 or 2, wherein: The first heat exchanger (12) is a low-temperature cooler, wherein the second heat exchanger (16) and the third heat exchanger (20) are designed as refrigerant condensers or gas coolers.

4. The cooler assembly arrangement (10) according to any one of the preceding claims, wherein: Based on the main air flow direction (HS), the order of the heat exchangers (12, 16, 20) is as follows: The first heat exchanger (12) is located before the second heat exchanger (16), and the second heat exchanger is located before the third heat exchanger (20); or The second heat exchanger (16) is located in front of the first heat exchanger (12), and the first heat exchanger is located in front of the third heat exchanger (20); or The second heat exchanger (16) is located before the third heat exchanger (20), which is located before the first heat exchanger (12).

5. The cooler assembly arrangement (10) according to any one of the preceding claims, wherein: Each heat exchanger (12, 16, 20) has a base surface facing the main flow direction (HS) of the air, wherein the base surfaces of all heat exchangers (12, 16, 20) are substantially of the same size; or Each heat exchanger (12, 16, 20) has a base surface that is different from at least one base surface of one of the other heat exchangers (12, 16, 20).

6. The cooler assembly arrangement (10) according to claim 5, wherein: The last heat exchanger (12, 20) has a largest base surface relative to the main air flow direction (HS), which is in particular larger than at least one base surface of one of the heat exchangers (12, 16, 20) arranged upstream of the last heat exchanger.

7. The cooler assembly arrangement (10) according to any one of the preceding claims, wherein: Each heat exchanger (12, 16, 20) is designed in such a way that each heat exchanger is designed with at least one coolant overflow or refrigerant overflow, in particular with multiple overflows, and with corresponding outlet overflows.

8. The cooler assembly arrangement (10) according to claim 7, wherein: With reference to the main air flow direction (HS), at least the last heat exchanger (12, 20) has an outlet overflow through which no air flows.

9. The cooler assembly arrangement (10) according to claim 6 or 7, wherein: Two heat exchangers (12, 16, 20) which at least partially overlap and are arranged one behind the other with reference to a main air flow direction (HS) are arranged such that the respective outlet overflows of the heat exchangers substantially coincide.

10. The cooler assembly arrangement (10) according to any one of claims 7 to 9, wherein: The second heat exchanger (16) and the third heat exchanger (20) are both fluidically connected to the refrigerant circuit (18), and the second heat exchanger and the third heat exchanger are arranged so that one of the two heat exchangers (16) forms a front-most heat exchanger to which air is applied substantially over its entire surface, and the other heat exchanger (18) of the two heat exchangers substantially overlaps with the front-most heat exchanger (16).

11. A motor vehicle having an internal combustion engine drive or an at least partially electric drive and having a cooler assembly arrangement (10) according to one of the preceding claims.

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