COOLING DEVICE

Description

[0001] The invention relates to a cooling device for liquid cooling, in particular of a motorcycle engine, wherein the cooling device comprises a plate-shaped cooling network for heat exchange between a coolant and ambient air. Furthermore, the invention relates to a motorcycle with such a cooling device. Furthermore, the invention relates to a method for manufacturing a cooling device.

[0002] The term "cooling network" generally refers to the part of the cooling device in which the majority of the heat exchange between the coolant and the ambient air takes place. The cooling network can comprise at least one cooling tube, wherein the at least one cooling tube runs through the cooling network with several, particularly meandering, curves. Furthermore, the cooling network can comprise cooling fins, wherein the cooling fins are in thermal communication with the at least one cooling tube. The at least one cooling tube and the cooling fins have a large surface area, allowing for efficient heat exchange between the coolant contained in the at least one cooling tube and the ambient air.

[0003] "Plate-shaped" means that one depth dimension is significantly smaller than the other two dimensions. In this application, "plate-shaped" also includes a curved plate, even if this plate is not bent by the forming process "bending."

[0004] Cooling devices of the type mentioned above are already known in the prior art. They are generally used to cool the engine, engine oil, or other components of a motorcycle using a liquid coolant. Typically, cooling lines connected to coolant inlets and outlets of the cooling device lead from the cooling device to the part of the motorcycle to be cooled. The liquid coolant circulates in these lines, possibly driven by a pump. The liquid coolant can be, for example, a mixture of water and glycol. However, other coolants, such as oil, can also be provided, whereby the cooling device can be designed, in particular, as a tubular oil cooler.

[0005] This allows heat to be dissipated from the component being cooled and, particularly as it flows through the cooling network, released into the ambient air. To ensure efficient heat exchange, the cooling network features coiled tubes with a large surface area through which the coolant flows.

[0006] When traveling slowly or while the motorcycle is stationary, heat can only be dissipated slowly into the ambient air. Therefore, a fan is often provided on the cooling system, which can be activated as needed. Typically, the fan is located between the cooling system and the engine and draws air through the cooling system.

[0007] Cooling nets with a curved shape are also state-of-the-art. This allows the cooling net's surface area to be increased while maintaining the same lateral dimensions.

[0008] However, installing a fan on curved cooling cores is problematic because the fan is not directly adjacent to the cooling core for the most part, and the size of the fan is limited by the bend. This reduces cooling performance. Furthermore, additional components, such as a bracket for attaching the cooling device to the motorcycle, can only be installed after the cooling core has been bent. Because bending is preferably performed after soldering the cooling core, an additional component cannot be installed on the cooling core before soldering, meaning the component cannot be soldered in place.

[0009] A further disadvantage of a curved cooling network compared to a flat cooling network is that, when the cooling device is in operation, a large portion of the surface is oriented obliquely to the direction of travel. This means that air cannot flow through the cooling network without deflecting it, as the cooling fins are typically aligned essentially perpendicular to the surface of the cooling network. This creates increased resistance.

[0010] A "bend" of the cooling network refers to a curvature of an essentially plate-shaped cooling network of at least 1°. The curvature can be created by bending a flat cooling network. However, other manufacturing methods are also conceivable.

[0011] Japanese patent JP 6428346 B2 shows a curved cooling core with the fan mounted on an eccentric, flat side surface. However, such an eccentric fan arrangement requires the rest of the motorcycle to be adapted, which entails additional design effort. Brackets for attaching the fan to the motorcycle can only be retrofitted in the curve of the cooling core or must be attached to the sides of the cooling core. In both cases, this entails additional manufacturing effort.

[0012] Embodiments of cooling devices for a motorcycle known from the prior art are disclosed, for example, in US 10 670 344 B2, WO 2005 / 105504 A1 or EP 1 445 435 A1.

[0013] The document JPH06219367A shows a cooling device according to the preamble of the claim.

[0014] The object of the present invention is to provide a cooling device, a motorcycle with a cooling device, and a method for manufacturing a cooling device that at least partially avoids the disadvantages of the prior art. In particular, a cooling device is to be created that enables good cooling performance of the coolant, is space-saving, and allows for simplified and more cost-effective attachment of additional components.

[0015] The object is achieved by a cooling device according to claim 1, a motorcycle according to claim 10 and a method for producing a cooling device according to claim 12.

[0016] According to the invention, it is provided that the cooling network has a flat central region, wherein the cooling network has a bend on at least two, preferably opposite, sides of the flat central region.

[0017] This combines the advantages of a curved cooling network with the advantages of a flat cooling network.

[0018] Because the cooling network has a flat central region, the present invention has the advantages of a flat cooling network in the central region.

[0019] The flat central area allows for better airflow, especially since the cooling fins are aligned essentially perpendicular to the surface of the cooling network. The air can flow essentially straight through the cooling network in the central area.

[0020] One advantage of a flat cooling system is the simplified installation of a fan centrally and directly on the cooling system, allowing even larger fans to be installed in standard designs. This increases cooling performance while saving costs. Another advantage of a flat cooling system is that additional components, such as a bracket for attaching the cooling system to the motorcycle, can be soldered together with the cooling system in a single step. This eliminates the need for subsequent welding or screwing of additional components.

[0021] Because the cooling network has a bend on at least two, preferably opposite, sides of the flat central region, the invention also offers the advantages of a curved cooling network. One advantage of a curved cooling network is the larger surface area of ​​the cooling network with the same lateral dimensions. This reduces the lateral dimensions of the motorcycle or creates more space for other components of the motorcycle, for example, a spoiler.

[0022] In a preferred embodiment, the cooling network is curved in the same direction on at least two opposite sides of the flat central region. In other words, both curves are concave when viewed from a first side and convex when viewed from a second side. If the cooling device is concave when viewed from the front of the motorcycle when installed on the motorcycle, more air can be collected while driving, increasing the cooling capacity. It is preferred that the entire cooling network be concave when viewed from a first side and convex when viewed from a second side.

[0023] In one embodiment, the cooling network is not bent along one direction. In other words, the bending axes of all bends of the cooling network are parallel to each other and to the aforementioned direction. It is preferably provided that this one direction corresponds to a width direction of the cooling network. The cooling network is thus bent in a longitudinal direction and not bent in a width direction.

[0024] It may be provided that the flat central area is essentially rectangular in shape.

[0025] Additionally or alternatively, the flat central section can be located at the center of the cooling network. This allows a fan and / or a bracket for attaching the cooling network to the motorcycle to be positioned centrally.

[0026] Preferably, the flat central region occupies an area of ​​more than a quarter, in particular more than a third, of the total area of ​​the cooling network. This allows a relatively large fan to be arranged in the flat central region.

[0027] In a further embodiment, the flat central region can be provided with an area of ​​200 to 400, in particular approximately 330, square centimeters. This allows even a relatively large fan, for example, with a diameter of approximately 195 mm, to be arranged largely in the flat region.

[0028] Because the fan rests on the flat central area of ​​the cooling network, the fan is easily attached directly to the cooling network using suitable fastening devices, which, for example, run through the cooling network.

[0029] It can be provided that the cooling network is formed substantially as a curved, rectangular plate, wherein the cooling network has a longitudinal direction and a width direction, wherein the cooling network is longer in the longitudinal direction than in the width direction and the longitudinal direction is orthogonal to the width direction.

[0030] In the longitudinal direction, the flat central region can be shorter than in the width direction of the cooling network. Additionally or alternatively, the flat central region can be between 140 mm and 150 mm in size, preferably approximately 145 mm, in the longitudinal direction of the cooling network. A fan with a diameter of approximately 195 mm, for example, can therefore be arranged largely in the flat central region.

[0031] In the longitudinal direction of the cooling network, the flat central area can occupy more than a quarter, in particular more than a third, of the length of the cooling network.

[0032] The flat central section can extend across the entire width of the cooling core. This means that an adjacent end face of the cooling core is also straight in this section. Components, in particular a bracket for attaching the cooling core to the motorcycle, can be attached to such a straight section even before the cooling core is bent.

[0033] In one embodiment, the two bends partially defining the flat central region have the same bending radius and / or the same bending angle. Thus, the cooling network can be formed essentially mirror-symmetrically.

[0034] Preferably, the bending radius of at least one bend can be between 180 mm and 220 mm, in particular approximately 200 mm, and / or the bending angle of at least one bend can be between 18° and 22°, in particular approximately 20°. This allows for external dimensions similar to those of a simple curved cooling network known from the prior art to be achieved. The cooling device can thus be mounted on motorcycles of the same design.

[0035] A large bend angle advantageously results in less expansion for the same surface area of ​​the cooling core. However, a large bend angle also leads to greater air deflection in the cooling core, since the surface normals of the surfaces beyond the bends increasingly differ from the airflow direction when the motorcycle is moving. Therefore, a compromise must be found for the bend angle, taking the above conditions into account.

[0036] According to the invention, at least one fan is arranged in the flat central area.

[0037] Preferably, the fan is arranged for the majority of its surface area, particularly preferably more than three-quarters, within the flat central area. This allows a large standard fan to be arranged on the cooling network without any gap, thus increasing the cooling performance.

[0038] According to the invention, the fan is arranged directly on the cooling network, preferably without any intermediate space.

[0039] The fan is attached directly to the cooling core using fasteners. This eliminates the need for any additional mounting hardware for the cooler, saving components and costs.

[0040] In a further embodiment, at least one bracket for fastening the cooling network to a motorcycle is arranged on the cooling network or on at least one side band on at least one end face of the cooling network.

[0041] Particularly preferably, the at least one bracket is attached to the cooling network or to at least one side band by soldering. The bracket can thus be attached to the cooling network together with the cooling network itself in a single step by soldering. This eliminates the need for subsequent welding or screwing of the bracket.

[0042] It can be provided that the flat central region extends to at least one end face of the cooling network, wherein the at least one side band of the at least one end face is formed straight in a section adjacent to the flat central region and wherein the at least one holder is arranged on this straight section of the at least one side band. As a result, the at least one holder can be fastened to the at least one side band before the cooling network is bent. This makes it possible for the at least one holder to be soldered to the at least one side band when the cooling network is soldered, which must take place before bending. Subsequent manual welding or other fastening of the at least one holder is therefore no longer necessary.

[0043] It may be provided that the cooling core and / or at least one bracket for attaching the cooling core to a motorcycle and / or at least one side band on one end of the cooling core are made of aluminum. This allows for joint recycling without disassembly.

[0044] It can be provided that a flat side region of the cooling network is arranged on a side of at least one, preferably both, bend(s) opposite the flat central region.

[0045] It can be provided that a coolant reservoir is arranged on a side of at least one, preferably both, bend(s) opposite the flat central region. Particularly preferably, a coolant reservoir is arranged at each end of the cooling network, beyond the bends. The cooling pipes in the cooling network lead from one coolant reservoir to the other.

[0046] It can be provided that a coolant inlet and / or a coolant outlet is arranged on a side of at least one, preferably both, bend(s) opposite the flat central region. Cooling lines leading to the engine of a motorcycle can be attached to the coolant outlet and / or the coolant inlet. Coolant can flow through the at least one cooling pipe from the coolant inlet to the coolant outlet. The coolant inlet is preferably arranged on a first coolant reservoir, while the coolant outlet is preferably arranged on a second coolant reservoir.

[0047] According to the invention, a motorcycle with a described cooling device is further provided, wherein the cooling network is arranged between the front wheel and the engine of the motorcycle.

[0048] In a preferred embodiment of the motorcycle, the cooling net is curved in the direction of the front wheel on at least two opposite sides of the flat central section. This allows for better capture of air flowing in from the direction of the front wheel while riding.

[0049] It is preferable for the fan to be located between the cooling system and the engine. This central location protects the fan and ensures it is not easily visible.

[0050] It can be provided that coolant lines lead from the cooling device to the engine and / or to a heat exchanger for cooling oil, for example, engine oil for the engine. The coolant lines are connected to a coolant inlet and a coolant outlet so that coolant can flow through the cooling device, in particular the at least one cooling pipe in the cooling network.

[0051] A method according to the invention for producing a cooling device comprises the following method steps: Providing a substantially plate-shaped, flat, preferably rectangular, cooling network, bending the cooling network at at least two locations so that the cooling network has a bend on at least two, preferably opposite, sides of a flat central region.

[0052] According to the invention, the following process steps are provided: Arranging at least one fan on the flat central region, wherein the fan is arranged directly on the cooling network, preferably without any intermediate space, fastening the at least one fan by means of fastening means directly on the cooling network.

[0053] Preferably, the cooling network is brazed before bending. The individual components of the cooling network, in particular the at least one cooling tube and / or the cooling fins, are brazed together. Sidebands can also be brazed on. The fully brazed cooling network, including the sidebands if necessary, can then be bent.

[0054] It can also be provided that a bracket is arranged on one end face of the cooling network before soldering to the cooling network or to at least one side band, and that the bracket is soldered to the cooling network or side band during the soldering of the cooling network. This eliminates the need to weld or otherwise attach the bracket in an additional step. The bracket can be arranged in a section of the side band adjacent to the flat area or directly on the cooling network. This section is not bent by bending and remains a straight section.

[0055] Further embodiments and details are shown in the figures. Fig. 1Cooling device with curved cooling net (state of the art) in perspective view Fig. 2aCooling device with flat area and two bends and holder in perspective view Fig. 2bCooling device with flat area and two bends without holder in alternative perspective view Fig. 3Comparison of the cooling devices from the Figuren 1 and 2b Fig. 4The cooling device from Fig. 2b with fan Fig. 5Bending device Fig. 6Method for producing a cooling device

[0056] The Fig. 1 shows a cooling device 1 known from the prior art. The cooling device 1 comprises a cooling network 28, two coolant containers 4, in particular a first coolant container 41 and a second coolant container 42, and a holder 5 for fastening the cooling device 1 to a motorcycle.

[0057] The cooling network 28 has cooling fins 6. The cooling fins 6 are thermally connected to at least one cooling pipe, wherein the at least one cooling pipe is arranged inside the cooling network 28 and is therefore not visible.

[0058] Through the at least one cooling pipe, coolant can flow from a first coolant tank 41 into a second coolant tank 42, wherein the coolant is cooled along the way by heat exchange with the ambient air.

[0059] The first coolant tank 41 has a coolant inlet 7, and the second coolant tank 42 has a coolant outlet 8. Cooling lines, which are attached to the coolant inlet 7 and the coolant outlet 8, carry the coolant from the cooling device 1 to a component of the motorcycle to be cooled, for example, the engine or to a heat exchanger for cooling oil, for example, engine oil. Furthermore, the heated coolant is returned via cooling lines to the cooling device 2, where it is cooled in the cooling network 28.

[0060] One of the two coolant containers 4 has a filling opening 9 with a lid through which coolant can be introduced into the cooling device 1 and refilled.

[0061] The cooling network 28 is formed as a substantially rectangular, curved plate. The cooling network 28 has a bend 10, which extends over a large portion of the cooling network 28, in particular also through the center of the cooling network 28.

[0062] The cooling net 28 has a longitudinal direction and a width direction, wherein the cooling net 28 is curved in the longitudinal direction and is not curved in the width direction.

[0063] The bracket 5 is attached to a side band 11 on one end of the cooling network 28. The side band 11 is arranged in the area of ​​the bend 10, so that the side band 11 is also bent. The bracket 5 is necessarily adapted to this bend 10.

[0064] The Figuren 2a und 2b show a cooling device 2 according to the invention. In contrast to the prior art (cooling network 28), the cooling network 3 here has a flat central region 12, wherein the cooling network 3 has a bend 101, 102 on at least two, preferably opposite, sides of the flat central region 12. Thus, at least two bends are provided, i.e., a first bend 101 and a second bend 102.

[0065] Further properties of the cooling network 3 can correspond to the cooling network 28 from the prior art.

[0066] The two bends 101, 102 have the same bending radius and the same bending angle.

[0067] In this example, the bending radius is approximately 200 mm and the bending angle is approximately 20°. However, other dimensions are also conceivable.

[0068] Along a direction R, which corresponds to a width direction B of the cooling network 3, the cooling network 3 is not bent.

[0069] The flat central region 12 is essentially rectangular in shape and located at the center of the cooling network 3. It occupies an area of ​​more than a quarter, in particular more than a third, of the total area of ​​the cooling network 3. In absolute terms, the flat central region 12 can occupy an area of ​​approximately 200 to 400, in particular approximately 330, square centimeters. However, other dimensions are also conceivable.

[0070] In addition, the flat central region 12 is shorter in the longitudinal direction L of the cooling network 3 than in the width direction B of the cooling network 3. In absolute terms, the flat central region 12 in the longitudinal direction L of the cooling network 3 can be between 140 mm and 150 mm, preferably approximately 145 mm. This corresponds to more than a quarter, in particular more than a third, of the length of the cooling network 3. However, other dimensions are also conceivable.

[0071] The flat central region 12 extends over the entire width of the cooling network 3. Accordingly, the central region 12 extends on both sides to the front side of the cooling network 3, so that the side bands 11 in the adjacent section 29 are straight.

[0072] A bracket 30 for attaching the cooling device 2 to a motorcycle can be arranged on these straight sections 29 of the side bands 11. Such a bracket is shown in Fig. 2a shown.

[0073] By allowing the bracket 30 to be arranged in a straight section 29 of a side band 11, the bracket 30 can also be attached to the side band 11 before bending the cooling network 3. In particular, the bracket 30 can be soldered together with the soldering of the cooling network 3 (cooling tubes and cooling fins) and the side bands 11.

[0074] As in the prior art, a flat side region 13, a coolant inlet 7, a coolant outlet 8 and a coolant container 4, 41, 42 are arranged on the sides of the bends 101, 102 opposite the flat central region 12.

[0075] The Fig. 3 shows the cooling device 1 from the prior art ( Fig. 1 ) and the cooling device 2 according to the invention (in particular Fig. 2b ) are superimposed in the drawing. The bracket 5 here corresponds to the curved bracket 5 from the Fig. 1 . The bending angle in the end area is approximately the same.

[0076] From the Fig. 3 It can be seen that the flat central region 12 forms the bend 10 of the cooling device 1 from the prior art ( Fig. 1 ) over a shorter distance. As a result, the cooling device 2 with the flat central section 12 is less deep than the prior art cooling device 1. When mounted on the motorcycle, this creates more space between the front wheel and the engine.

[0077] This also leaves more space for a fan 14, which is located in Fig. 4 is shown.

[0078] The Fig. 4 shows a cooling device 2 with a flat central region 12, also depicting a fan 14. The fan 14 is arranged on the flat central region 12. It is arranged largely, in particular more than three-quarters, within the flat central region 12.

[0079] The fan 14 is arranged directly on the cooling network 3, in particular directly on the cooling fins 6. It is attached directly to the cooling network 3 by means of fastening means 15. This eliminates the need for complex fastening, for example, on the side bands 11.

[0080] The Fig. 4 The fan 14 shown corresponds to a typical standard fan design. Due to its installation in the flat central area 12, it is also possible for the fan 14 to have a standard housing 17. Nevertheless, the fan 14 rests flat against the cooling network 3.

[0081] The flat central area 12 allows for a larger fan 14 than with continuously curved cooling networks 28. This allows the coolant to be cooled more efficiently.

[0082] The fan 14 has a rotatable fan blade, which can have a length of approximately 195 mm. This extends not too far beyond the flat central area 12. The rotatable fan blade is Fig. 4 covered by the housing 17.

[0083] The fan 14 is preferably electrically operated and has a power connection 16 for this purpose.

[0084] The Fig. 5 shows a bending device 18 for bending a cooling device 2, in particular for producing the cooling network 3. The bending device 18 has a mold 19 mounted on a movable plate 21. The unbent cooling network can be clamped to the mold 19 in a central region. The convex mold 19 has a flat central region and two curves on two opposite sides of the flat central region.

[0085] Two rotatably mounted counterpieces 20 are arranged on a stationary table 22. The two counterpieces 20 are spaced apart from each other such that they are located essentially below the lateral edge regions of the unbent cooling network.

[0086] For bending, the movable plate 21, together with the mold 19 and the clamped cooling network 3, is pressed downwards against the two counterparts 20, so that the cooling network 3 is bent. During the pressing process, the counterparts 20 are rotated so that at the end of the bending process they are inclined like the flat side areas 13 of the cooling network 3 and rest against the flat side areas 13.

[0087] During the bending process, the cooling network 3 (optionally including the side bands 11) is preferably already soldered. In addition, a holder 30 can already be attached, in particular soldered, to the area not to be bent.

[0088] The Fig. 6 shows a block diagram of a method for manufacturing a cooling device 2.

[0089] In a method step 23, a substantially plate-shaped, flat cooling network 3 is provided. At this stage, the cooling fins 6 and the at least one cooling tube are not yet firmly connected to one another.

[0090] In parallel, a bracket for attaching the cooling device 2 to a motorcycle is provided (method step 24).

[0091] In a further method step 25, the holder is arranged on the cooling network 3 or on a side band 11 on an end face of the cooling network 3. Particularly preferably, the holder 30 is arranged in a central region of the cooling network 3 or the side band 11. In addition, a solder is applied to the connection points.

[0092] In a further process step 26, the cooling network 3 and the support 30, and optionally the side bands 11, are brazed, preferably in a furnace. Thus, the cooling network 3 itself (cooling fins 6 and cooling tube), the side bands 11, and the support 30 can be brazed in one step.

[0093] In a final process step 27, the cooling network 3 is formed, preferably by means of the bending device 18, from Fig. 5 , bent at least two places, so that the cooling network 3 has a bend 101, 102 on at least two, preferably opposite, sides of a flat central region 12.

[0094] The bracket 30 is arranged such that it remains on a straight section 29 of the cooling network 3 or the side band 11. As a result, the bracket 30 is not affected by bending. In particular, the bracket 30 is not bent, which would be impossible or very difficult to achieve from a manufacturing perspective. List of reference symbols:

[0095] 1 Cooling device (state of the art) 2 Cooling device 3 Cooling network 4 Coolant reservoir 41 First coolant reservoir 42 Second coolant reservoir 5 Bracket (state of the art) 6 Cooling fins 7 Coolant inlet 8 Coolant outlet 9 Filling opening 10 Bend 101 First bend 102 Second bend 11 Sideband 12 Flat central region 13 Flat side region 14 Fan 15 Fastener 16 Power connection 17 Housing 18 Bending device 19 Mold 20 Counterpart 21 Movable plate 22 Table 23 Providing a flat cooling network 24 Providing a bracket 25 Arranging 26 Soldering 27 Bending 28 Cooling network (state of the art) 29 Straight section of a sideband 30 Bracket B Width direction L Longitudinal direction R Direction without bending

Claims

1. A cooler (2) for cooling liquid, in particular of an engine of a motorcycle, wherein the cooler (2) has a plate-like cooler core (3) for exchanging heat between a coolant and ambient air, wherein the cooler core (3) has a planar middle region (12), wherein the cooler core (3) has a bend (101, 102) on at least two side, preferably opposite sides, of the planar middle region (12), wherein the at least one fan (14) is arranged on the planar middle region (12), the fan is arranged directly on the cooler core (3), preferably without an intermediate space, characterized in that the fan (14) is attached directly to the cooler core (3) by means of fastening means (15).

2. The cooler (2) according to the preceding claim, wherein the cooler core (3) is bent in the same direction at least at two opposite sides of the planar middle region (12), preferably wherein the entire cooler core (3) is formed concave as seen from a first side and convex as seen from a second side.

3. The cooler (2) according to one of the preceding claims, wherein the cooler core (3) is not bent along a direction (R), preferably wherein said direction (R) corresponds to a width direction (B) of the cooler core (3).

4. The cooler (2) according to one of the preceding claims, wherein the planar middle region (12) - is formed substantially rectangular, and / or - is arranged in the center of the area of the cooler core (3), and / or - occupies an area of more than one quarter, in particular more than one third, of the total area of the cooler core (3), and / or - occupies an area of 200 to 400, in particular of approximately 330, square centimeters.

5. The cooler (2) according to one of the preceding claims, wherein the fan (14) is arranged for the most part, preferably by more than three quarters, within the planar middle region (12).

6. The cooler (2) according to one of the preceding claims, wherein at least one bracket (30) for fastening the cooler core (3) to a motorcycle is arranged on the cooler core (3) or on at least one side strip (11) on at least one front side of the cooler core (3), particularly preferably wherein the at least one bracket (30) is fastened to the cooler core (3) or to the at least one side strip (11) by brazing.

7. The cooler (2) according to the preceding claim, wherein the planar middle region (12) extends as far as at least one front side of the cooler core (3), wherein the at least one side strip (11) of the at least one front side is formed straight in a portion (29) adjoining the planar middle region (12), and wherein the at least one bracket (30) is arranged on said straight portion (29) of the at least one side strip (11).

8. The cooler (2) according to one of the preceding claims, wherein - the cooler core (3) and / or - at least one bracket (30) for fastening the cooler core (3) to a motorcycle and / or - at least one side strip (11) on a front side of the cooler core (3) are manufactured from aluminum.

9. The cooler (2) according to one of the preceding claims, wherein, at a side of at least one, preferably both, bend(s) (101, 102) that is situated opposite the planar middle region (12), there is arranged - a planar side region (13) of the cooler core (3), and / or - a coolant inlet (7) and / or a coolant outlet (8), and / or - a coolant reservoir (4, 41, 42).

10. A motorcycle having a cooler (2) according to one of the preceding claims, wherein the cooler core (3) is arranged between the front wheel and the engine of the motorcycle.

11. The motorcycle according to the preceding claim, wherein the cooler core (3) is bent, at least at two opposite sides of the planar middle region (12), in the direction of the front wheel.

12. A method for producing a cooler (2) according to one of claims 1 to 9, having the following method steps: - providing a substantially plate-like, planar, preferably rectangular, cooler core (3), - bending the cooler core (3) in at least two places such that the cooler core (3) has a bend (101, 102) at each of at least two preferably opposite sides of a planar middle region (12), - wherein at least one fan (14) is arranged on the planar middle region (12), the fan (14) being arranged on the cooler core (3), preferably without an intermediate space, and the fan (14) being attached directly to the cooler core (3) by means of fastening means (15).

13. The method according to the previous claim, having the following method steps: - arranging at least one fan (14) on the planar middle region (12), wherein the fan (14) is arranged directly on the cooler core (3), preferably without an intermediate space, - fastening the at least one fan (14) directly to the cooler core (3) by means of fastening means (15).

14. The method according to claim 12 or 13, wherein the cooler core (3) is brazed before the bending, preferably wherein, before the brazing, at least one bracket (30) is arranged on the cooler core (3) or on at least one side strip (11) on at least one front side of the cooler core (3), and wherein, during the brazing of the cooler core (3), the at least one bracket (30) is concomitantly brazed onto the cooler core (3) or onto the at least one side strip (11).