Heat exchanger device for a motor vehicle, method for operating a heat exchanger device for a motor vehicle and corresponding motor vehicle

Abstract

The invention relates to a heat exchanger device (1) for a motor vehicle (2), comprising a housing (3) in which a heat exchanger (4) has first flow channels for flow with a first fluid in a first flow direction and second flow channels, fluidically separated from and thermally coupled to the first flow channels, for flow with a second fluid in a second flow direction, and a blower (19) for conveying the first fluid in the first flow direction are arranged, wherein the housing (3) has a fluid inlet opening (13) and a fluid outlet opening (22) for the first fluid, which are fluidically connected to each other via the first flow channels of the heat exchanger (4), and wherein the fluid inlet opening (13) is angled relative to the first flow direction and / or a longitudinal median plane of the heat exchanger (4).The invention further relates to a method for operating a heat exchanger device (1) for a motor vehicle (2) and a motor vehicle (2) with a heat exchanger device (1).

Description

[0001] The invention relates to a heat exchanger device for a motor vehicle, comprising a housing in which a heat exchanger has first flow channels for flow with a first fluid in a first flow direction and second flow channels, fluidically separated from and thermally coupled to the first flow channels, for flow with a second fluid in a second flow direction, and a blower for conveying the first fluid in the first flow direction are arranged, wherein the housing has a fluid inlet opening and a fluid outlet opening for the first fluid, which are fluidically connected to each other via the first flow channels of the heat exchanger, and wherein the fluid inlet opening is angled relative to the first flow direction and / or a longitudinal median plane of the heat exchanger.The invention further relates to a method for operating a heat exchanger device for a motor vehicle and to a motor vehicle with a heat exchanger device.

[0002] For example, the prior art document EP 3 591 328 B1 describes a heat exchanger module comprising: a housing designed to accommodate at least one heat exchanger core; an air inlet duct designed above the housing to cover at least one section of a surface of the at least one heat exchanger core and to provide an opening; and at least one blower device incorporated in the housing and designed to generate a pressure differential across the at least one heat exchanger core to enable the flow of a fluid through it.

[0003] A grid is provided which is designed to be mounted above the opening of the air inlet duct, wherein the grid is spaced apart from the at least one heat exchanger core and is inclined with respect to the at least one heat exchanger core, wherein the grid comprises an array of struts which are designed to form restricted passages, wherein the struts are designed, spaced apart and aligned with respect to each other such that the struts are configured to guide and distribute fluid impinging on the grid over the surface of the at least one heat exchanger core which is covered by the air inlet duct, wherein the orientation of the struts laying down the grid varies from one section to another of the grid.

[0004] Furthermore, the publication DE 10 2020 005 444 B4 discloses a cooling system for an internal combustion engine comprising a radiator, a water pump, and a water jacket for the engine, all connected by pipes. The radiator is covered by an airtight housing on the engine side and connected to a carburetor via an air line, and the housing is equipped with a hatch and a cover.

[0005] The object of the invention is to propose a heat exchanger device for a motor vehicle which has advantages over known heat exchanger devices, in particular high efficiency or high heat transfer performance over its lifetime.

[0006] This is achieved according to the invention with a heat exchanger device for a motor vehicle with the features of claim 1. It is provided that a housing cover of the housing, which delimits an inlet flow channel for the first fluid located between the fluid inlet opening and the heat exchanger, has a hinge, so that the housing cover is hinged, at least partially, with respect to a housing base of the housing, which delimits an outlet flow channel for the first fluid located between the heat exchanger and the fluid outlet opening.

[0007] Advantageous embodiments with expedient further developments of the invention are specified in the dependent claims. It should be noted that the exemplary embodiments described in the description are not limiting; rather, any variations of the features disclosed in the description, the claims, and the figures are possible.

[0008] The heat exchanger is preferably an integral part of the motor vehicle, but can of course also be separate from it, particularly until the heat exchanger is mounted on or in the motor vehicle. The heat exchanger serves to transfer heat between the first fluid and the second fluid and / or vice versa. For this purpose, the heat exchanger comprises the heat exchanger, which has first flow channels for the first fluid and second flow channels for the second fluid. During operation of the heat exchanger, the first fluid flows at least intermittently through the first flow channels, and the second fluid flows at least intermittently through the second flow channels.

[0009] The use of the term "flow channels" in the plural does not imply a quantification of a specific number of flow channels. There can be any number of primary flow channels and any number of secondary flow channels, for example, just a single primary flow channel and / or a single secondary flow channel. However, it is more common to have several primary flow channels and / or several secondary flow channels. In this respect, the term "flow channels" should be understood as representing at least one flow channel.

[0010] The flow channels are fluidically separated, meaning the first and second fluids are isolated. Specifically, the first and second flow channels are separated by a common wall of the heat exchanger; this wall defines at least one of the first flow channels and one of the second flow channels. Accordingly, heat is transferred across this wall between the first fluid in the first flow channel and the second fluid in the second flow channel. Ultimately, the wall is in direct contact with both the first and second fluids; in particular, it is subjected to flow from both fluids.The heat exchanger can be designed in any way imaginable; for example, it can be a direct flow heat exchanger, a cross flow heat exchanger, or a counterflow heat exchanger.

[0011] The first and second fluids can, in principle, be chosen arbitrarily. Preferably, the first fluid is a gaseous fluid or a gas, and the second fluid is a liquid. For example, the heat exchanger is designed as the main radiator for the vehicle. In this case, the first fluid is air, in particular ambient air from the vehicle's external environment. The second fluid, on the other hand, is a coolant that is temperature-controlled using the heat exchanger. For example, the coolant is circulated at least temporarily in a coolant circuit that, in addition to the heat exchanger, includes at least one temperature-controlled device. This device is, for example, the vehicle's drive system.

[0012] The drive system serves to propel the motor vehicle, thus providing drive torque for propelling the vehicle. To provide this drive torque, the drive system has at least one drive unit. During operation, the drive system generates heat, which must be dissipated from the drive system, at least temporarily. For this purpose, the drive system, and in particular its drive unit, is fluidically connected to the coolant circuit or forms part of the coolant circuit. The drive system is thus fluidized by the coolant, which absorbs at least some of the heat contained within it and carries it away towards the heat exchanger. In the heat exchanger, the coolant is cooled using ambient air, whereby the heat contained in the coolant is transferred to the ambient air.

[0013] To ensure a sufficient flow rate of the first fluid, the heat exchanger was equipped with a blower. This blower is designed and configured to pump the first fluid through the heat exchanger and its first flow channels. The blower is operated, at least intermittently, to pump the first fluid during the operation of the heat exchanger. The first fluid enters the heat exchanger through the fluid inlet opening, flows through the first flow channels, and then exits the heat exchanger through the fluid outlet opening, primarily towards the outside environment.

[0014] The heat exchanger and the fan are arranged and housed within the casing of the heat exchanger assembly. In particular, the casing completely encloses the heat exchanger and the fan. The fluid inlet and outlet openings are formed on the casing, specifically as recesses. The fluid inlet and outlet openings are fluidically connected via the first flow channels of the heat exchanger, such that the fluid flowing into the heat exchanger assembly through the fluid inlet opening exits the heat exchanger assembly through the fluid outlet opening after passing through the first flow channels.

[0015] To achieve particularly efficient heat transfer between the first fluid and the second fluid, or vice versa, while maintaining a compact heat exchanger design, the heat exchanger is inclined. This means that, when the heat exchanger is installed in the vehicle as intended, it has a longitudinal median plane that is angled relative to a longitudinal axis of the vehicle. This angle is greater than 0° and less than 180°. For example, the angle is at least 15° and at most 75°, at least 30° and at most 60°, or approximately or exactly 45°.

[0016] The longitudinal median plane of the heat exchanger is preferably understood to be an imaginary plane that passes through the center of the heat exchanger in the direction of flow of the first fluid. In particular, the longitudinal median plane is perpendicular to the first flow direction in which the first fluid flows through the first flow channels. In other words, the longitudinal median plane is perpendicular to the longitudinal center axes of the first flow channels. The first flow channels can, in principle, have any shape; for example, they may have a circular cross-section or be in the form of slots.

[0017] Due to the angled arrangement of the heat exchanger with respect to the longitudinal axis of the vehicle, the fluid inlet opening is angled relative to the first flow direction and / or the longitudinal median plane of the heat exchanger. In other words, the fluid inlet opening, through which the first fluid enters the heat exchanger, lies entirely within an imaginary plane. This imaginary plane is angled relative to the first flow direction or the longitudinal median plane, thus forming an angle with it that is greater than 0° and less than 180°. Preferably, the angle is at least 15° and at most 75°, at least 30° and at most 60°, or approximately or exactly 45°. This means that the first fluid flows into the heat exchanger through the fluid inlet opening in an inlet flow direction. Subsequently, it is deflected so that it flows through the first flow channels in the first flow direction.The inlet flow direction and the first flow direction are also angled relative to each other, in particular by one of the aforementioned angles.

[0018] Such a design of the heat exchanger means that contaminants entering the heat exchanger along with the first fluid accumulate on the side of the heat exchanger facing the fluid inlet opening. They are forced against the heat exchanger by the force of gravity and therefore cannot detach themselves and be carried away from it; in particular, they are not carried away from the heat exchanger by gravity. Over time, the contaminants accumulate in the heat exchanger, reducing the cross-sectional area available for the flow of the first fluid. This decreases its efficiency.

[0019] Cleaning the heat exchanger previously required a time-consuming process of removing the heat exchanger assembly from the vehicle, opening it, and removing the contaminants. The heat exchanger assembly then had to be reassembled and reinstalled in the vehicle. Therefore, the heat exchanger assembly is now designed to be reversibly openable. For this purpose, the housing cover has a hinge that allows it to be hinged, at least partially, relative to the base of the housing. Preferably, the housing cover, or at least a portion of it, is hinged to the base of the housing.

[0020] The housing cover and the housing base are integral parts of the housing; in particular, the housing consists of the housing cover and the housing base. Both the housing cover and the housing base serve, firstly, to house the heat exchanger and the fan, and secondly, to guide the fluid through the heat exchanger. For this purpose, the housing cover defines the inlet flow channel, and the housing base defines the outlet flow channel. From a fluid dynamics perspective, the inlet flow channel is located between the fluid inlet opening and the heat exchanger; in particular, it fluidly connects the fluid inlet opening and the heat exchanger. Preferably, the inlet flow channel extends from the fluid inlet opening to the heat exchanger.

[0021] The bottom of the housing, however, is located fluidically between the heat exchanger and the fluid outlet, thus on the side opposite the inlet flow channel with respect to the heat exchanger. The outlet flow channel fluidically connects the heat exchanger and the fluid outlet, in particular extending from the heat exchanger to the fluid outlet, thus connecting them continuously.

[0022] The hinge allows the housing cover to be reversibly moved, at least partially, relative to the housing base. The hinge is arranged and designed in such a way that it allows the housing cover to be opened to access the heat exchanger. The hinge allows the housing cover to be positioned relative to the housing base in different ways. In a first position, the housing cover is positioned so that it completely seals the inlet flow channel between the fluid inlet opening and the heat exchanger, ensuring that, apart from any unavoidable leakage, it directs the initial fluid entering the heat exchanger assembly through the fluid inlet opening almost entirely to the heat exchanger. For example, in this first position, the housing cover rests flush against the housing base all the way around.

[0023] In the second position, the housing cover is positioned to release the heat exchanger from the external environment of the heat exchanger unit. In this second position, cleaning of the heat exchanger or removal of contaminants from the external environment is therefore possible. In the second position, the housing cover is preferably positioned at least partially further away from the housing base than in the first position. In particular, it is positioned at least partially further away from the housing base.

[0024] The hinge is designed so that the housing cover can be folded reversibly. This allows the housing cover to be repeatedly moved from the first position to the second position and back again without damaging the hinge or the housing cover. For example, the housing cover can be hinged to the housing base. Alternatively, the housing cover can be designed with multiple sections, one of which is permanently and immovably attached to the housing base, while a second section is hinged to the first. In either case, the aforementioned advantages are achieved.

[0025] A further development of the invention provides that the axis of rotation of a blower impeller is angled relative to the longitudinal center axis of the heat exchanger. The blower has an impeller in the form of an impeller or fan wheel. The impeller is rotatably mounted about the axis of rotation or, during operation of the blower, is set into rotation about the axis of rotation by means of a drive device. The axis of rotation is angled with respect to the longitudinal center plane, thus forming an angle with it that is greater than 0° and less than 180°. Preferably, the angle is at least 60° and at most 120°, at least 75° and at most 105°, or approximately or exactly 90°. Preferably, the axis of rotation runs parallel to the first flow direction of the first fluid through the first flow channels. Such a design of the heat exchanger results in a particularly compact construction.

[0026] A further development of the invention provides that the fluid inlet opening is continuously bounded by a fluid inlet opening edge lying entirely within an imaginary inlet opening plane and formed by the housing, in particular the housing cover, and / or that the fluid outlet opening is continuously bounded by a fluid outlet opening edge lying entirely within an imaginary outlet opening plane and formed by the housing, in particular the housing base. The fluid inlet opening and the fluid outlet opening are each completely and continuously bounded by the housing, in particular the fluid inlet opening by the housing cover and the fluid outlet opening by the housing base.

[0027] The fluid inlet opening is bounded by the fluid inlet opening edge, and the fluid outlet opening by the fluid outlet opening edge. The fluid inlet opening edge lies completely and continuously within the imaginary inlet opening plane, and the fluid outlet opening edge lies completely and continuously within the imaginary outlet opening plane. The inlet opening plane and the outlet opening plane are preferably each angled relative to the longitudinal center plane of the heat exchanger. This results in the aforementioned particularly compact design of the heat exchanger assembly.

[0028] A further development of the invention provides that the inlet opening plane and the outlet opening plane are angled relative to each other. The inlet opening plane and the outlet opening plane are not only angled relative to the longitudinal center plane, but also relative to each other. The inlet opening plane and the outlet opening planes thus form an angle with each other that is greater than 0° and less than 180°. For example, the angle is at least 60° and at most 120°, at least 45° and at most 105°, or approximately or exactly 90°. When the heat exchanger device is arranged as intended on or in the motor vehicle, the inlet opening plane is, for example, defined by a vertical axis and a transverse axis of the motor vehicle, and the outlet opening plane by the longitudinal axis and the transverse axis. This also enables the compact design.

[0029] A further development of the invention provides that a first housing cover area, which at least partially forms the edge of the fluid inlet opening, is attached to the housing base by means of first fastening means of a first fastening type, and a second housing cover area, spaced apart from the edge of the fluid inlet opening, is attached to the housing base by means of second fastening means of a second fastening type. The housing cover is thus, at least conceptually, divided into the two housing cover areas. The housing cover areas are hinged to each other. The first housing cover area encloses the fluid inlet opening and, for this purpose, forms the edge of the fluid inlet opening. The second housing cover area, on the other hand, is spaced apart from the fluid inlet opening.

[0030] Both housing cover sections define the inlet flow channel. The first housing cover section is attached to the housing base using the first set of fasteners, and the second housing cover section using the second set of fasteners. The fasteners differ in their fastening method; the first set of fasteners and the second set are designed differently. For example, the first set of fasteners ensures a reliable, permanent attachment of the housing cover to the housing base, whereas the second set of fasteners allows the housing cover to be detached and reattached to the housing base. This also contributes to achieving the aforementioned advantages.

[0031] A further development of the invention provides that the first fastening method is a screw fastening and the second fastening method is a snap-fit ​​fastening. The first fastening means are screws and the second fastening means are snap-fit ​​devices. The snap-fit ​​devices are designed and configured for irreversibly fastening the housing cover or the second housing cover section to the housing base. In particular, they ensure easy removal of the second housing cover section from the housing base to facilitate cleaning of the heat exchanger.

[0032] A further development of the invention provides that the hinge has a partial reduction in the material thickness of the housing cover, particularly in the form of a film hinge. In the area of ​​the hinge, the housing cover thus has a reduced material thickness than elsewhere. Specifically, the reduction in material thickness extends along the entire length of the housing cover in the direction of a hinge axis around which the housing cover can be hinged. For example, the hinge is designed as a film hinge, which is characterized by a particularly thin material thickness. Such a hinge design is particularly easy to manufacture and reliable in operation.

[0033] A further development of the invention provides that the housing cover, in a first position, has a connecting edge that rests continuously against the housing base, while in a second position of the housing cover, this connecting edge is arranged at least partially spaced away from the housing base. The connecting edge is provided and configured on the housing cover. In the first position of the housing cover, the connecting edge rests continuously against the housing base to reliably establish the inlet flow channel. When the housing cover is moved from the first position to the second position, the connecting edge is displaced away from the housing base, so that in the second position it is spaced away from the housing base. Accordingly, the inlet flow channel is opened, and easy access to the heat exchanger for cleaning is provided.

[0034] The invention further relates to a method for operating a heat exchanger device for a motor vehicle, in particular a heat exchanger device as described in this description, wherein the heat exchanger device has a housing in which a heat exchanger, the first flow channels for flow with a first fluid in a first flow direction and second flow channels, fluidically separated from and thermally coupled to the first flow channels, for flow with a second fluid in a second flow direction, and a blower for conveying the first fluid in the first flow direction are arranged, wherein the housing has a fluid inlet opening and a fluid outlet opening for the first fluid, which are fluidically connected to each other via the first flow channels of the heat exchanger.wherein the fluid inlet opening is angled relative to the first flow direction and / or a longitudinal median plane of the heat exchanger.

[0035] It is provided that a housing cover of the housing, which delimits an inlet flow channel for the first fluid located between the fluid inlet opening and the heat exchanger, has a hinge, so that the housing cover is hinged at least partially with respect to a housing base of the housing, which delimits an outlet flow channel for the first fluid located between the heat exchanger and the fluid outlet opening, wherein the housing cover is moved at least partially from a first position to a second position for cleaning the heat exchanger, in which it is arranged further away from the housing base than in the first position.

[0036] The advantages of such a procedure or such a design of the heat exchanger device have already been mentioned. Both the heat exchanger device and the method for operating it can be further developed as explained in this description, and reference is made to that description in this respect.

[0037] The invention further relates to a motor vehicle with a heat exchanger device, in particular a heat exchanger device as described in this description, wherein the heat exchanger device has a housing in which a heat exchanger, the first flow channels for flow with a first fluid in a first flow direction and second flow channels, fluidically separated from and thermally coupled to the first flow channels, for flow with a second fluid in a second flow direction, and a blower for conveying the first fluid in the first flow direction are arranged, wherein the housing has a fluid inlet opening and a fluid outlet opening for the first fluid, which are fluidically connected to each other via the first flow channels of the heat exchanger.wherein the fluid inlet opening is angled relative to the first flow direction and / or a longitudinal median plane of the heat exchanger.

[0038] It is provided that a housing cover, which defines an inlet flow channel for the first fluid located between the fluid inlet opening and the heat exchanger, has a hinge such that the housing cover is hinged, at least in part, relative to a housing base, which defines an outlet flow channel for the first fluid located between the heat exchanger and the fluid outlet opening. Reference is again made to the explanations in this description regarding the advantages and possible advantageous developments.

[0039] The features and combinations of features described in the description, in particular those described in the following figure description and / or shown in the figures, can be used not only in the combinations specified, but also in other combinations or individually, without departing from the scope of the invention, in particular the scope of the claims. Thus, embodiments that are not explicitly shown or explained in the description and / or the figures, but which emerge from or can be derived from the explained embodiments, particularly within the scope of the claims, are also to be considered as encompassed by the invention.

[0040] The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawing, without limiting the invention. The drawing shows: Fig. 1 a schematic representation of a heat exchanger device for a motor vehicle, as well as Fig. 2 a schematic representation of an area of ​​the motor vehicle in which the heat exchanger device is located.

[0041] The Fig. Figure 1 shows a schematic representation of a heat exchanger device 1, such as that used, for example, in a motor vehicle 2 (not shown). The heat exchanger device 1 has a housing 3 in which a heat exchanger 4, only partially visible here, is arranged. In the illustrated embodiment, the housing 3 has a housing cover 5 and a housing base 6. The housing cover 5 has a first housing cover section 7 and a second housing cover section 8. The two housing cover sections 7 and 8 are hinged to each other about a hinge axis 10 via a hinge 9. Preferably, the hinge 9 is formed by a material taper in the housing cover 5, so that it is similar to a film hinge. This means that the housing cover sections 7 and 8 are preferably manufactured in one piece and from a single material.

[0042] The hinge 9 allows the second housing cover section 8 to be displaced relative to the first housing cover section 7, and thus also relative to the housing base 6, i.e., to be rotatable. The first housing cover section 7 is attached to the housing base 6 by means of first fastening means 11. The second housing cover section 8 is fixed to the housing base 6 using second fastening means 12. It can be seen that the first fastening means 11 and the second fastening means 12 are of different types, with the first fastening means 11 being, in particular, screws and the second fastening means 12 preferably being detents.

[0043] Accordingly, the first housing cover section 7 is permanently attached to the housing base 6, and in particular can only be detached from the housing base 6 with the use of tools, whereas the second housing cover section 8 is detachably, and in particular can be detached without tools, connected to the housing base 6. This allows the second housing cover section 8 to be removed from the housing base 6 in order to clean the heat exchanger 4 located in the housing 3. It can also be seen that the housing 3 has a fluid inlet opening 13. This opening is, for example, provided with a grid 14 to prevent at least coarse contaminants from entering the heat exchanger assembly 1.

[0044] The Fig.Figure 2 shows a schematic representation of a section of the motor vehicle 2, in particular showing an engine compartment 15 and the heat exchanger 1 arranged therein. Additionally, a front fairing 16 of the motor vehicle 2 is indicated. This fairing has an air inlet opening 17, behind which the fluid inlet opening 13 of the heat exchanger 1 is located, so that ambient air flowing in through the air inlet opening 17 can enter the heat exchanger 1 through the fluid inlet opening 13.

[0045] Fluid dynamics: Between the fluid inlet opening 13 and the heat exchanger 4, there is an inlet flow channel 18, which is at least partially bounded by the housing cover 5. A fan 19 with a rotor 20 is also visible, located on the side of the heat exchanger 4 facing away from the inlet flow channel 18. On the side of the fan 19 facing away from the heat exchanger 4, an outlet flow channel 21 is formed in the housing 3. The heat exchanger 4 is fluid dynamically connected via this channel to a fluid outlet opening 22, which is also formed on the housing 3. The outlet flow channel 21 is at least partially bounded by the housing base 6.

[0046] It can be seen that a free space 23 exists in the engine compartment 15. This space is dimensioned such that the housing cover 5 or the second housing cover area 8 can be displaced according to arrow 24, namely about the aforementioned hinge axis 10. The free space 23 ensures that the heat exchanger device 1 or its housing 3 can be reliably opened even when installed in the motor vehicle 2, in order to clean the heat exchanger 4. REFERENCE MARK LIST: 1 heat exchanger unit 2 motor vehicles 3 cases 4 heat exchangers 5 Case covers 6 Case base 7 1. Housing cover area 8 2. Housing cover area 9 hinge 10 Folding axle 11 1. Fasteners 12 2. Fasteners 13 Fluid inlet opening 14 grids 15 Engine compartment 16 Front fairing 17 Air intake opening 18 Inlet flow channel 19 blowers 20 running gear 21 Outlet flow channel 22 Fluid outlet opening 23 Free space 24 Arrow

Claims

Heat exchanger device (1) for a motor vehicle (2), comprising a housing (3) in which a heat exchanger (4) has first flow channels for flow with a first fluid in a first flow direction and second flow channels, fluidically separated from and thermally coupled to the first flow channels, for flow with a second fluid in a second flow direction, and a blower (19) for conveying the first fluid in the first flow direction are arranged, wherein the housing (3) has a fluid inlet opening (13) and a fluid outlet opening (22) for the first fluid, which are fluidically connected to each other via the first flow channels of the heat exchanger (4), and wherein the fluid inlet opening (13) is angled relative to the first flow direction and / or a longitudinal median plane of the heat exchanger (4),wherein a housing cover (5) of the housing (3) defines an inlet flow channel (18) for the first fluid located between the fluid inlet opening (13) and the heat exchanger (4), characterized in that the housing cover (5) has a first housing cover area (7) and a second housing cover area (8) which are hinged to one another about a hinge axis (10) via a hinge (9), such that the housing cover (5) is hinged at least partially with respect to a housing base (6) of the housing (3), which defines an outlet flow channel (21) for the first fluid located between the heat exchanger (4) and the fluid outlet opening (22), wherein the hinge (9) has a partial material reduction of the housing cover (5) which extends in the direction of the hinge axis (10) over the entire extent of the housing cover (5),wherein the housing cover (5) in a first position has a connecting edge which is continuously in contact with the housing base (6), which in a second position of the housing cover (5) is arranged at least partially spaced away from the housing base (6). Heat exchanger device according to claim 1, characterized in that a rotation axis of a drive unit (20) of the blower (19) is angled relative to the longitudinal median plane of the heat exchanger (4). Heat exchanger device according to one of the preceding claims, characterized in that the fluid inlet opening (13) is continuously bounded by a fluid inlet opening edge lying completely in an imaginary inlet opening plane, which is formed by the housing (3), and / or that the fluid outlet opening (22) is continuously bounded by a fluid outlet opening edge lying completely in an imaginary outlet opening plane, which is formed by the housing (3). Heat exchanger device according to claim 3, characterized in that the inlet opening plane and the outlet opening plane are angled relative to each other. Heat exchanger device according to claim 3 or 4, characterized in that a first housing cover area (7) of the housing cover (5) forming at least the area of ​​the fluid inlet opening is attached to the housing base (6) by means of first fastening means (11) of a first fastening type and a second housing cover area (8) of the housing cover (5) spaced apart from the fluid inlet opening edge is attached to the housing base (6) by means of second fastening means (12) of a second fastening type. Heat exchanger device according to claim 5, characterized in that the first fastening method is a screw fastening and the second fastening method is a snap fastening. Method for operating a heat exchanger device (1) for a motor vehicle (2), a heat exchanger device (1) according to one or more of the preceding claims, wherein the heat exchanger device (1) has a housing (3) in which a heat exchanger (4) has first flow channels for flow with a first fluid in a first flow direction and second flow channels, fluidically separated from and thermally coupled to the first flow channels, for flow with a second fluid in a second flow direction, and a blower (19) for conveying the first fluid in the first flow direction are arranged, wherein the housing (3) has a fluid inlet opening (13) and a fluid outlet opening (22) for the first fluid, which are fluidically connected to each other via the first flow channels of the heat exchanger (4),and wherein the fluid inlet opening (13) is angled relative to the first flow direction and / or a longitudinal median plane of the heat exchanger (4), wherein a housing cover (5) of the housing (3) defines an inlet flow channel (18) for the first fluid located between the fluid inlet opening (13) and the heat exchanger (4), characterized in that the housing cover (5) has a first housing cover area (7) and a second housing cover area (8) which are hinged to one another about a hinge axis (10) via a hinge (9), such that the housing cover (5) is hinged at least partially with respect to a housing base (6) of the housing (3), which defines an outlet flow channel (21) for the first fluid located between the heat exchanger (4) and the fluid outlet opening (22), wherein the hinge (9) has a partial material reduction of the housing cover (5),which extends in the direction of the hinge axis (10) over the entire extent of the housing cover (5), wherein the housing cover (5) in a first position has a connecting edge continuously in contact with the housing base (6), which in a second position of the housing cover (5) is arranged at least partially spaced away from the housing base (6), wherein the housing cover (5) is moved at least partially from a first position to a second position for cleaning the heat exchanger (4), in which it is arranged further away from the housing base (6) than in the first position, ., Motor vehicle (2) with a heat exchanger device (1), a heat exchanger device (1) according to one or more of claims 1 to 6, wherein the heat exchanger device (1) has a housing (3) in which a heat exchanger (4) has first flow channels for flow with a first fluid in a first flow direction and second flow channels, fluidically separated from and thermally coupled to the first flow channels, for flow with a second fluid in a second flow direction, and a blower (19) for conveying the first fluid in the first flow direction are arranged, wherein the housing (3) has a fluid inlet opening (13) and a fluid outlet opening (22) for the first fluid, which are fluidically connected to each other via the first flow channels of the heat exchanger (4),and wherein the fluid inlet opening (13) is angled relative to the first flow direction and / or a longitudinal median plane of the heat exchanger (4), wherein a housing cover (5) of the housing (3) defines an inlet flow channel (18) for the first fluid located between the fluid inlet opening (13) and the heat exchanger (4), characterized in that the housing cover (5) has a first housing cover area (7) and a second housing cover area (8) which are hinged to one another about a hinge axis (10) via a hinge (9), such that the housing cover (5) is hinged at least partially with respect to a housing base (6) of the housing (3), which defines an outlet flow channel (21) for the first fluid located between the heat exchanger (4) and the fluid outlet opening (22), wherein the hinge (9) has a partial material reduction of the housing cover (5),which extends in the direction of the hinge axis (10) over the entire extent of the housing cover (5), wherein the housing cover (5) in a first position has a connecting edge continuously in contact with the housing base (6), which in a second position of the housing cover (5) is arranged at least partially spaced away from the housing base (6).

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