Vehicle air conditioning and heat exchanger device

Abstract

Vehicle air conditioning system (58), in particular for an electric or hybrid vehicle, with a heat exchanger device (10), comprising at least one cooling fluid channel (34) of a refrigerant circuit through which a cooling fluid can flow, at least one heat transfer fluid channel (32) through which a heat transfer fluid can flow, and an air flow duct (12) which is divided into a plurality of air guide channels (20) which have first sections (28) and second sections (30), wherein the first sections (28) are directly thermally coupled to the at least one heat transfer fluid channel (32) and the second sections (30) are directly thermally coupled to the at least one cooling fluid channel (34), wherein the at least one heat transfer fluid channel (32) is arranged in a cooling circuit which is intended for cooling a vehicle engine.

Description

[0001] The invention relates to a vehicle air conditioning system, in particular for electric or hybrid vehicles, and a heat exchanger device for a vehicle air conditioning system.

[0002] Heat exchanger devices for vehicle air conditioning systems are known from the prior art. These devices heat, for example, the air drawn into the vehicle air conditioning system. In the heat exchanger, thermal energy from the heat transfer fluid (usually water) of an engine cooling system is transferred to the intake air. However, during a cold start of the vehicle or with highly efficient engines that release very little heat into the system, the engine and heat transfer fluid are cold and therefore unsuitable for heating the air in the air conditioning system. To enable air heating even during a cold start, it is known to provide an additional electric heater for the air in the vehicle air conditioning system. However, an electric heater is particularly disadvantageous in hybrid or electric vehicles, as this discharges the vehicle's traction battery and reduces its range.

[0003] Furthermore, with multiple separate heating elements in the airflow of the vehicle air conditioning system, air turbulence occurs at the various components, increasing the flow resistance in the vehicle air conditioning system and reducing the effectiveness of the air conditioning blower.

[0004] JP 2010-70071 A discloses a heat exchanger device for air conditioning systems, comprising an evaporator with a plurality of first heat exchangers. The heat exchanger device further includes a cold storage unit that encloses a cold storage material and has a plurality of second heat exchangers. The cold storage unit is arranged downstream of the evaporator in the direction of airflow. This allows the air flowing through the unit to be cooled at the first heat exchangers and then cool the cold storage material via the second heat exchangers. If the evaporator's cooling capacity ceases, for example, due to an engine stoppage, the cold storage unit can absorb heat from the air flowing through it, thereby temporarily maintaining air cooling.

[0005] DE 199 18 617 A1 discloses a gas cooler for a supercritical CO2 high-pressure refrigerant circuit of a motor vehicle air conditioning system, wherein the refrigerant circuit comprises, in the direction of refrigerant flow, a compressor, the gas cooler, an internal heat exchanger, a throttling device, an evaporator, and a low-pressure receiver. The gas cooler and the internal heat exchanger are combined into a single unit to save installation space.

[0006] DE 10 2009 003 222 A1 discloses a roller for machines for the production and / or treatment of fibrous webs, comprising nested tubes for the removal of media, in particular condensate or cooling fluid, from an interior of the roller.

[0007] The object of the invention is to create a vehicle air conditioning system and a heat exchanger device whose function is independent of the operating state of the vehicle and which enables low energy consumption.

[0008] The object is achieved according to the invention by a vehicle air conditioning system, in particular for an electric or hybrid vehicle, with a heat exchanger device comprising at least one cooling fluid channel of a refrigerant circuit through which a cooling fluid can flow, at least one heat transfer fluid channel through which a heat transfer fluid can flow, and an air flow duct which is divided into a plurality of air guide channels, which have first sections and second sections, wherein the first sections are directly thermally coupled to the at least one heat transfer fluid channel and the second sections are directly thermally coupled to the at least one cooling fluid channel, wherein the at least one heat transfer fluid channel is arranged in a cooling circuit which is provided for cooling a vehicle engine.In this way, it is possible to condition the air in the airflow duct using heat transfer fluid via the first sections of the air ducts, utilizing waste heat from the vehicle engine, and, for example, during a cold start, to condition the air using cooling fluid or refrigerant in the cooling fluid channel via the second sections. The refrigerant circuit can be controlled independently of the vehicle's operating state. By integrating both functions into a single heat exchanger device, it can be designed to be compact and require minimal installation space.

[0009] The problem is further solved by a heat exchanger device for a vehicle air conditioning system, which has at least one cooling fluid channel of a refrigerant circuit through which a cooling fluid can flow, at least one heat transfer fluid channel through which a heat transfer fluid can flow, and an air flow duct. The air flow duct is divided into a plurality of air guide channels, which have first sections and second sections, wherein the first sections are directly thermally coupled to the at least one heat transfer fluid channel and the second sections are directly thermally coupled to the at least one cooling fluid channel, wherein at least one cooling fluid channel and at least one heat transfer fluid channel are formed on or in a common heat transfer intermediate layer.The arrangement of the cooling fluid channel and the heat transfer fluid channel in the common heat transfer intermediate layer enables heat transfer from the heat transfer fluid and the cooling fluid to the air without increasing the flow resistance for the air.

[0010] The heat exchanger device is preferably a box-shaped unit.

[0011] Low flow resistance in the air ducts is made possible in particular if the first section and the second section of each air duct are aligned with each other and have no lateral offset.

[0012] Preferably, at least one heat transfer layer is arranged in the air ducts, and the at least one cooling fluid channel and the at least one heat transfer fluid channel are thermally connected to the at least one, preferably lamellar, heat transfer layer, whereby the layer also forms the outer wall of the channel(s). In this way, heat transfer from the heat transfer fluid and the cooling fluid to the air is enabled by a common heat transfer layer without increasing the airflow resistance. The heat transfer layer can be integral or consist of several partial layers or partial lamellae.

[0013] To enable sequential conditioning of the air in the air duct by the cooling fluid or the heat transfer fluid, the at least one cooling fluid channel and the at least one heat transfer fluid channel can be arranged sequentially along the associated air duct in the direction of airflow. In particular, the cooling fluid channel and the heat transfer fluid channel can be coupled sequentially to the at least one heat transfer intermediate layer in the direction of airflow.

[0014] Preferably, the heat transfer fluid channel is arranged upstream of the cooling fluid channel in the direction of airflow. In this way, the air is first conditioned in the section associated with the heat transfer fluid and then in the section associated with the cooling fluid, which is particularly important during cold starts, as the heat transfer fluid does not contribute any heat in this case.

[0015] A particularly compact design is achieved by providing a common distributor element and / or a common collector element, each of which accommodates one end of the cooling fluid and heat transfer fluid channels. An advantageous embodiment of this design incorporates a thin, hollow plate as an intermediate layer, within which the channels are formed.

[0016] In a simple embodiment, at least one heat transfer fluid channel can be designed to be one-way, thus enabling heat exchange between the heat transfer fluid and the airflow duct along one path.

[0017] To increase the path length of the cooling fluid channel in the heat exchanger device, at least one cooling fluid channel can be designed to have multiple paths, preferably in a U-shape, thereby enabling heat exchange of the cooling fluid with the airflow line along two successive paths.

[0018] It is conceivable that interconnected supply and / or return pipes for heat transfer fluid and coolant are provided, enabling heat transfer between the two. This allows the coolant to be conditioned by the heat transfer fluid. For example, during a cold start, the engine can be preheated by warming the heat transfer fluid through heat transfer from the coolant to the heat transfer fluid. In this way, the engine can be brought up to its optimal operating temperature quickly.

[0019] Preferably, the inlet and outlet pipes are positioned inside one another. In particular, the coupled pipes can be arranged coaxially. This reduces the space required for the inlet and outlet pipes and also shields the inner pipe from the environment.

[0020] For example, the heat transfer fluid can flow in the core and the cooling fluid in the jacket of a coaxial inlet and / or outlet pipe.

[0021] Direct current heat transfer is made possible by providing a supply pipe and / or a discharge pipe as a common pipe for heat transfer fluid and cooling fluid.

[0022] A simple connection of the heat exchanger device and / or the vehicle air conditioning system to a heat transfer fluid circuit or a refrigerant circuit can be achieved by having a common connection element for at least some of the cooling fluid and heat transfer fluid connections of the air conditioning system.

[0023] Preferably, the connections of the components carrying heat transfer fluid and / or cooling fluid are soldered.

[0024] For example, the cooling fluid channel in the heat exchanger device is designed as a condenser of an air conditioning circuit, which is the refrigerant circuit.

[0025] A heat transfer fluid circuit can be provided in which at least one heat transfer fluid channel is arranged, wherein the heat transfer fluid circuit preferably includes engine cooling of the vehicle, i.e., the heat transfer fluid channel serves as a cooling device.

[0026] Further features and advantages of the invention will become apparent from the following description and from the drawings, to which reference is made. The drawings show: - Fig. 1 a schematic perspective view of a heat exchanger device according to the invention; - Fig. 2 a side view of the heat exchanger device according to Fig. 1; - Fig. 3 a sectional view of a detail of a heat exchanger device according to the invention; - Fig. 4 the heat exchanger device according to Fig. 1 with supply and discharge pipes for heat transfer fluid and cooling fluid; - Fig. 5 a sectional view along line VV in Fig. 4 through a supply pipe; - Fig. 6 a detailed view of the connection of the supply and discharge pipes with distributor / collector elements of the heat exchanger device according to Fig. 4; - Fig. 7 a detailed view of a common connection element of the heat transfer fluid and cooling fluid connections of the heat exchanger device; - Fig. 8 a schematic view of the arrangement of the heat exchanger device according to Fig. 4 in a vehicle air conditioning system according to the invention; and - Fig. 9 a side view of the vehicle air conditioning system Fig. 7.

[0027] The Fig. Figures 1 to 3 show a schematically represented, box-like heat exchanger device 10 for a vehicle air conditioning system of an electric or hybrid vehicle.

[0028] Air can flow through the heat exchanger device 10 in the form of fresh air and / or recirculated air via an air flow line 12.

[0029] The airflow channel 12 in the heat exchanger device 10 is not formed by a single channel, but by a plurality of air guide channels 20, which are laterally bounded by numerous spaced-apart, parallel, for example, lamellar heat transfer intermediate layers 18. In the embodiment shown, the plate-shaped heat transfer intermediate layers 18 extend essentially linearly between distributor / collector elements 14, 16 provided on the top and bottom of the heat exchanger device 10 and across the entire width of the heat exchanger device 10 (relative to Fig. 2) However, differently designed heat transfer intermediate layers 18 can also be provided, which divide the air flow line 12 into any number of air distribution channels 20.

[0030] Air cannot flow into the distributor / collector elements 14, 16, because these are separate chambers designed for the supply and discharge of cooling fluid and heat transfer fluid.

[0031] The distributor / collector elements 14, 16 have connection points 22 for heat transfer fluid supply and discharge lines and connection points 24 for cooling fluid supply and discharge lines.

[0032] In the embodiment shown, air flows in the direction of arrow 26 through the airflow duct 12.

[0033] Fig. Figure 2 shows a side view of the heat exchanger device 10. The internal structure of the heat exchanger device 10 is shown in Fig. 2 with dashed lines as well as in the section view of Fig. Figure 3 shows the narrow air ducts 20 of the heat exchanger device 10, each divided in the direction of flow into a first section 28 and a second section 30.

[0034] In the first section 28, which is arranged upstream in the direction of airflow, at least one heat transfer fluid channel 32 is provided, extending from the corresponding section of the distributor / collector element 16 to the corresponding section of the distributor / collector element 14. Heat transfer fluid is supplied to the connection point 22 via a heat transfer fluid circuit (see Fig. 2).

[0035] The heat transfer fluid channel 32 is directly thermally coupled to the first section 28 of the air distribution duct 20 via the heat transfer layer 18, either by the heat transfer fluid channel 32 being formed within the heat transfer layer 18 or by its wall being in contact with the heat transfer layer 18. As the heat transfer fluid flows through the heat transfer fluid channel 32, heat is exchanged between the air in the associated air distribution ducts 20 and the cooling fluid in the heat transfer fluid channel 32 via the heat transfer layer 18.

[0036] The second section 30 of the air ducts 20 has a cooling fluid channel 34. The cooling fluid channel 34 is designed as a multi-path U-shaped channel (see Fig. 2) and extends between the two connection points 24 for cooling fluid in the distributor / collector element 14.

[0037] The cooling fluid channel 34 is directly thermally coupled to the second section 30 of the air distribution channel 20 via the heat transfer layer 18. As the cooling fluid flows through the cooling fluid channel 34, heat is exchanged between the air in the associated air distribution channels 20 and the cooling fluid in the cooling fluid channel 34 via the heat transfer layer 18. The cooling fluid channels 34 are also formed within or adjacent to the heat transfer layers 18.

[0038] As previously explained, the heat transfer intermediate layers 18 extend over the entire width, so that the heat input takes place in the first and / or the second section 28, 30.

[0039] Fig. Figure 3 shows a detailed view of a section in the area of ​​the distributor / collector element 14. A first partition 36 separates the distributor / collector element 14 into two sections analogous to the air duct 20, whereby the section shown on the left is assigned to the heat transfer fluid and the section shown on the right to the cooling fluid.

[0040] Heat transfer fluid can flow in and out of a heat transfer fluid distribution / collecting chamber 38 via the connection point 22. In the distribution chamber 38, the heat transfer fluid can distribute itself to the majority of heat transfer fluid channels 32.

[0041] The heat transfer fluid channels 32 are each designed as flat tubes in the heat transfer intermediate layers 18 in the area of ​​the first section 28 of the air ducts 20.

[0042] The distributor / collector element 14 is divided in the area of ​​the second section 30 by a second partition 40 into a distribution chamber 42 and a collector chamber 44. The distribution chamber 42 and collector chamber 44 are each connected via a connection point 24 to a supply and return line of an air conditioning and refrigerant circuit, respectively.

[0043] Preferably, the distribution chamber 42 is designed in such a way that good mixing of the phases of the cooling fluid is ensured and a uniform phase mixture is distributed to the majority of the cooling fluid channels 34.

[0044] The cooling fluid channels 34 are each designed as flat tubes in the area of ​​the second section 30 of the air ducts 20 in the heat transfer intermediate layers 18, wherein two paths of the cooling fluid channel 34 are provided with a deflection in the area of ​​the distributor / collector element 16.

[0045] The air ducts 20 thus each have first sections 28 and second sections 30, wherein the first sections 28 are directly heat-coupled with the heat transfer fluid duct 32 and the second sections 30 are directly heat-coupled with the cooling fluid duct 34.

[0046] In the embodiment shown, the heat transfer fluid channel 32 and the cooling fluid channel 34 are formed inside a common heat transfer intermediate layer 18. However, it is also possible that the cooling fluid channel 34 and / or the heat transfer fluid channel 32 are designed, for example, as separate pipe elements and are thermally connected to a corresponding heat transfer intermediate layer 18.

[0047] In the embodiment shown, the heat transfer intermediate layer 18 is, as mentioned, integrally formed and extends over both sections 28, 30. This enables a compact design of the heat exchanger device 10, since, for example, even in pure operation with heat transfer fluid, the entire common heat transfer intermediate layer 18 is used for heat transfer from air to heat transfer fluid.

[0048] However, it is also possible that the heat transfer intermediate layer 18 consists of several sub-section intermediate layers, for example, a first sub-section intermediate layer in the first section 28 and a second sub-section intermediate layer in the second section 30. A third sub-section intermediate layer can be arranged between the two sub-section intermediate layers of the first and second sections 28, 30.

[0049] It is also possible that the air ducts 20 have separate first and second sections 28, 30, each of which is thermally coupled to the heat transfer fluid duct 32 or the cooling fluid duct 34. In order to reduce the flow resistance due to additional air turbulence at the transition between sections 28, 30 in the air duct 20 in such a case, the first and second sections 28, 30 of each air duct 20 are aligned with each other and corresponding intermediate sections can be connected via intermediate elements.

[0050] Fig. Figure 4 shows the heat exchanger device 10 with inlet and outlet pipes 46, 48 for cooling fluid and heat transfer fluid connected at connection points 22 and 24.

[0051] In the embodiment shown, the two supply pipes 46 for heat transfer fluid and cooling fluid and the two discharge pipes 48 for heat transfer fluid and cooling fluid are each coupled section by section and designed in such a way that heat transfer between heat transfer fluid and cooling fluid is enabled.

[0052] As shown in the section view in Fig. As shown in Figure 5, the supply and discharge pipes 46 and 48, respectively, for the cooling fluid and heat transfer fluid, are positioned inside one another. For example, the heat transfer fluid flows in the core and the cooling fluid in the outer shell of the coaxial supply pipe 46. The inner pipe 50 forms a common wall for the supply pipes 46 of the cooling fluid and the heat transfer fluid, through which heat is transferred between the two media. The inner pipe 50 is connected to the outer pipe 54 via webs 52.

[0053] Alternatively, it is also possible for the pipes to be arranged next to each other and for heat transfer to occur via a common side wall or adjacent side walls.

[0054] In the illustrated embodiment, a common, coupled supply pipe 46 for the heat transfer fluid and a common, coupled discharge pipe 48 for the heat transfer fluid and the cooling fluid are provided. In this way, heat transfer between the heat transfer fluid and the cooling fluid takes place according to the direct current principle.

[0055] Fig. Figure 6 shows the area of ​​connection points 22 and 24 of the distributor / collector elements 14, 16. The supply and return pipes 46, 48 for heat transfer fluid and cooling fluid are decoupled in this area and are connected separately to the corresponding connection points 22, 24. It is also possible that coupled supply or return pipes 46, 48 extend with their coupled section to correspondingly coupled connection points 22, 24, and that the decoupling of the supply and return of the heat transfer fluid and cooling fluid is provided in the area of ​​the distributor / collector elements 14, 16.

[0056] The heat exchanger device 10 is easily connected to a refrigerant or air conditioning circuit and a heat transfer fluid circuit via a common connection element 56, which is located in Fig. Figure 7 is shown. In the illustrated embodiment, the supply and discharge pipes 46, 48 for heat transfer fluid and cooling fluid are decoupled upstream of the common connection element 56. The common connection element 56 is designed here as a common flange for the four supply and discharge pipes 46, 48 for heat transfer fluid and cooling fluid.

[0057] Alternatively, the common connection element 56 can be designed in a complex manner and include a corresponding guide for the heat transfer fluid and the cooling fluid, so that the coupled supply and discharge pipes 46, 48 are directly connected to the common connection element 56 with their coupled section.

[0058] Fig. 8 and Fig. Figure 9 shows the heat exchanger device 10 in a vehicle air conditioning system 58, wherein the heat exchanger device 10 is intended for heating the air in the vehicle air conditioning system 58.

[0059] A heat transfer fluid circuit is provided, which includes engine cooling for the vehicle. Heat transfer fluid is pumped through the engine and absorbs heat from the engine. The warm fluid is then passed through the heat transfer fluid channels 32 of the heat exchanger device 10 and transfers heat to the air in the air ducts 20.

[0060] A refrigerant or air conditioning circuit is part of the vehicle air conditioning system 58. The cooling fluid channel 34 of the heat exchanger device 10 is arranged as a condenser in the air conditioning or refrigerant circuit. Cooling fluid is compressed in a compressor of the air conditioning or refrigerant circuit. The hot, compressed cooling fluid is then passed through the cooling fluid channels 34 of the heat exchanger device 10, thereby transferring heat to the air in the air distribution channels 20.

[0061] For the sake of clarity, the heat transfer fluid circuit and the air conditioning or refrigerant circuit are not shown in the figures.

[0062] A common connection point 60 of the vehicle air conditioning system 58 is provided for refrigerant and heat transfer fluid. In the illustrated embodiment, the common connection point 60 of the vehicle air conditioning system 58 comprises the common connection element 56 of the heat exchanger device 10 and a common connection element 62 of an air cooling device of the vehicle air conditioning system 58, for example, an evaporator. Preferably, the common connection point 60 comprises all connections of the vehicle air conditioning system 58 for refrigerant and heat transfer fluid. It is also possible that the common connection point 60 is designed as an integral connection element.

[0063] The following explains the operation of the heat exchanger device 10 and the vehicle air conditioning system 58. The heat exchanger device 10 is designed as a heating device within the vehicle air conditioning system 58. During normal vehicle operation, waste heat from the vehicle engine is transferred to the engine's cooling circuit via the engine cooling system. The warm heat transfer fluid flows through the heat transfer fluid channel 32 of the heat exchanger device 10 and transfers heat to the air flowing through the air distribution channels 20, thus forming a cooling system. Additional heating of the air via the second sections of the heat exchanger device 10 using cooling fluid in the cooling fluid channels 34 is not required.

[0064] During a cold start of the vehicle, the temperature of the heat transfer fluid is insufficient to heat the air. In this case, the cooling fluid channel 34 acts as a condenser in the refrigerant / air conditioning circuit. Hot cooling fluid, compressed in the compressor of the refrigerant / air conditioning circuit, flows through the cooling fluid channel 34 and transfers heat to the air flowing through the air distribution channels 20. This enables heating even during a cold engine start.

[0065] Furthermore, heat is transferred from the cooling fluid to the heat transfer fluid via the coupled inlet and outlet pipes 46, 48. In this way, the heat transfer fluid is preheated, allowing the vehicle's engine to be brought up to its optimal operating temperature quickly.

[0066] In electric and hybrid vehicles, it is particularly possible to couple the air conditioning or refrigerant circuits or the cooling circuit to a cooling system of the vehicle's drive battery.

Claims

[1] Vehicle air conditioning system (58), in particular for an electric or hybrid vehicle, comprising a heat exchanger device (10) comprising at least one cooling fluid channel (34) of a refrigerant circuit through which a cooling fluid can flow, at least one heat transfer fluid channel (32) through which a heat transfer fluid can flow, and an air flow duct (12) which is divided into a plurality of air guide channels (20) comprising first sections (28) and second sections (30), wherein the first sections (28) are directly thermally coupled to the at least one heat transfer fluid channel (32) and the second sections (30) are directly thermally coupled to the at least one cooling fluid channel (34), wherein the at least one heat transfer fluid channel (32) is arranged in a cooling circuit which is intended for cooling a vehicle engine. [2] Vehicle air conditioning system (58) according to claim 1, wherein interconnected supply pipes (46) and / or discharge pipes (48) are provided for cooling fluid and heat transfer fluid, which are designed to enable heat transfer between cooling fluid and heat transfer fluid. [3] Vehicle air conditioning system (58) according to claim 2, wherein the supply pipes (46) and / or discharge pipes (48) are positioned inside each other. [4] Vehicle air conditioning system (58) according to claim 3, characterized by , that the heat transfer fluid flows in the core and the cooling fluid flows in the jacket of a coaxial supply pipe (46) and / or discharge pipe (48). [5] Vehicle air conditioning system (58) according to one of claims 1 to 4, wherein a supply pipe (46) and / or a discharge pipe (48) are provided as a common pipe for coolant fluid and heat transfer fluid. [6] Vehicle air conditioning system (58) according to one of claims 1 to 5, wherein a common connection element (56) is provided for a supply pipe (46) and a discharge pipe (48) which are connected to the heat exchanger device (10). [7] Vehicle air conditioning system (58) according to one of claims 1 to 6, wherein an air conditioning circuit is provided in which the at least one cooling fluid channel (34) is arranged. [8] Heat exchanger device (10) for a vehicle air conditioning system (58), in particular for electric or hybrid vehicles, comprising at least one cooling fluid channel (34) of a refrigerant circuit through which a cooling fluid can flow, at least one heat transfer fluid channel (32) through which a heat transfer fluid can flow, and an air flow line (12) which is divided into a plurality of air guide channels (20) which have first sections (28) and second sections (30), wherein the first sections (28) are directly heat-coupled with the at least one heat transfer fluid channel (32) and the second sections (30) are directly heat-coupled with the at least one cooling fluid channel (34), wherein at least one cooling fluid channel (34) and at least one heat transfer fluid channel (32) are formed on or in a common heat transfer intermediate layer (18). [9] Heat exchanger device (10) according to claim 8, wherein the first section (28) and the second section (30) of each air guide channel (20) are aligned with each other. [10] Heat exchanger device (10) according to claim 8 or 9, wherein at least one heat transfer intermediate layer (18) is arranged in the air guide channels (20), and the at least one cooling fluid channel (34) and the at least one heat transfer fluid channel (32) are thermally connected to the at least one heat transfer intermediate layer (18). [11] Heat exchanger device (10) according to one of claims 8 to 10, wherein the at least one cooling fluid channel (34) and the at least one heat transfer fluid channel (32) are arranged successively in the direction of airflow on the associated air guide channel (20). [12] Heat exchanger device (10) according to claim 11, wherein the heat transfer fluid channel (32) is arranged in the direction of airflow on the associated air guide channel (20) upstream of the cooling fluid channel (34). [13] Heat exchanger device (10) according to one of claims 8 to 12, wherein a common distributor element and / or a common collector element (14, 16) is provided, which accommodates one of the ends of the cooling fluid channel (34) and heat transfer fluid channel (32). [14] Heat exchanger device (10) according to one of claims 8 to 13, wherein the at least one heat transfer fluid channel (32) is designed to be one-way, whereby heat exchange of the heat transfer fluid with the air flow line (12) is possible along a path. [15] Heat exchanger device (10) according to one of claims 8 to 14, wherein the at least one cooling fluid channel (34) is designed to be multi-path, preferably U-shaped, whereby heat exchange of the cooling fluid with the air flow line (12) is possible along two successive paths. [16] Heat exchanger device (10) according to one of claims 8 to 15, wherein the cooling fluid channel (34) is designed as a condenser of an air conditioning circuit. [17] Heat exchanger device (10) according to one of claims 8 to 16, wherein the heat transfer fluid channel (32) is arranged as a cooling device in a cooling circuit.

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