DEVICE FOR REGULATING AN AIR FLOW FOR AN AIR INTAKE OF A MOTOR VEHICLE

Description

[0001] The subject of the invention is a device for regulating an air flow for an air intake of a motor vehicle and more specifically a motor vehicle, and in particular an electric motor vehicle comprising such an air intake regulation device.

[0002] Generally, a motor vehicle comprises an air inlet in the form of an opening located on the front face of said motor vehicle. The incoming air is used to enable heat exchange between it and the cooling system of the motor vehicle, said cooling system being located near the front face of said vehicle. More specifically, the air entering the engine compartment of the motor vehicle is guided towards the cooling system of said motor vehicle to enable heat exchange between the incoming air and the heat exchanger of the cooling system. It is important to minimize losses of air flow between the air inlet and the heat exchanger.Indeed, any air flow entering the interior of the vehicle and escaping towards the engine compartment before having contributed to the heat exchange inside the motor vehicle, negatively influences the air resistance coefficient of said motor vehicle.

[0003] It is known to use air guides in the form of a housing, generally made of plastic or other flexible material, connecting the air inlet to the cooling system.

[0004] Devices for regulating an air flow for an air intake of a motor vehicle are known in particular from documents FR3013302 A1 and FR2950574 A1.

[0005] In an electric vehicle, the air intake control device may include an air duct arranged downstream of the cooling system and designed to guide the air flow towards the exterior of the vehicle. Such a duct may be advantageous for generating a venturi effect downstream of the cooling unit so that a greater air flow can pass through the cooling system, thereby improving thermal efficiency.

[0006] However, such a duct has certain disadvantages. Indeed, the ducts as known in the prior art are relatively leaky and air leaks, causing a reduction in the incoming air flow, can quickly reduce the thermal performance of the cooling system. In addition, when an electric vehicle is stationary and connected to a station, or electrical terminal, in order to recharge the battery, the motor fan unit of the cooling system is activated in order to ensure cooling of the battery and prevent it from overheating. However, such operation generates noise pollution for the user.

[0007] The present invention seeks to overcome this drawback and proposes a device for regulating an air flow for an air intake of a motor vehicle, according to the characteristics of claim 1. In other words, the regulating device comprises several elements and at least one sealing means is arranged between at least two elements.

[0008] The flap closes the flow duct, particularly the duct leading the airflow to the outside of the vehicle. The noise generated during battery charging is contained inside the vehicle and can no longer be heard outside the vehicle.

[0009] Other embodiments of the regulating device according to the invention are as defined by the dependent claims.

[0010] Still other embodiments of an air inlet regulation device not all forming part of the invention and taken individually or in combination propose that: the sealing means corresponds to a gasket or a foam strip, or foam strip; the sealing means is airtight and watertight; the regulating device comprises a flap arranged within the flow duct downstream of the cooling unit relative to the flow of the air flow; the flow duct comprises an inlet and an outlet, said outlet being composed of at least two separate ducts, said device comprising at least one flap being capable of closing each of said ducts; a closing device comprising a set of closing flaps capable of pivoting in rotation so as to vary the air flow rate, is arranged in the flow duct upstream of the cooling unit relative to the flow of the air flow; the cooling unit is inclined relative to the closing device; the flap is of the drum or sliding type;the flow duct comprises an inlet and an outlet, said outlet being composed of at least two separate ducts, the shutter being capable of closing each of said ducts; a closing device comprising a set of closing shutters capable of pivoting in rotation so as to vary the air flow rate, is arranged in the flow duct upstream of the cooling unit relative to the flow of the air flow; the cooling unit is inclined relative to the closing device; vanes are arranged upstream and / or downstream of the cooling unit relative to the flow of the air flow; the vanes extend from the closing device to the cooling unit; the passage section of the flow duct increases from the inlet to the cooling unit and reduces from the cooling unit to the outlet. ;

[0011] The invention also relates to a vehicle comprising a device for regulating an air flow for an air inlet according to the claim.

[0012] Other embodiments of a vehicle not covered by the invention taken alone or in combination propose that: the vehicle comprises an air inlet, possibly provided with a grille, the outlet of the flow duct comprises a cleaning duct arranged to lead the air flow towards the exterior of the vehicle and a cooling duct arranged to lead the air flow towards the engine compartment of the vehicle; the vehicle further comprises an additional air inlet and an additional duct connecting said additional inlet to the cleaning duct.

[0013] Other characteristics and advantages of the invention will appear on reading the description which follows. This is purely illustrative and must be read in conjunction with the appended drawings in which: there figure 1 illustrates a device for regulating an air flow according to the invention in a profile view, the figure 2 illustrates a section of the air flow regulation device of the figure 1 according to a profile view, the figure 3 illustrates part of the air flow regulation device in a perspective view, the figure 4 illustrates the regulation device according to the invention in a perspective view, The figures 5A - 5E illustrate different embodiments of the sealing means.

[0014] There figure 1 illustrates the device 1 for regulating an air flow for an air intake of a motor vehicle according to the invention. The regulating device 1 extends in a longitudinal (X), transverse (Y) and vertical (Z) direction, for example relative to the axes of the vehicle, as represented by the axes on the figures 1 et 2 .

[0015] According to the present invention, the terms "downstream", "upstream", "in series" and "parallel" qualify the position of one component relative to another, according to the direction of flow of an air flow in a device 1 for regulating an air flow according to the present invention.

[0016] The device 1 for regulating an air flow according to the invention comprises a housing 2 corresponding to an envelope, or even a sheath, thus defining, by its walls, a flow duct 4 with an air inlet 20 and an air outlet 22 in which an air flow flows. The housing 2 is made of flexible material in order to absorb the vibrations of the vehicle when it is moving, and of a material sufficiently resistant in order to carry elements such as heat exchangers, certain plastics for example polypropylene or polyamide-6 are suitable for such use.

[0017] The device 1 for regulating an air flow according to the invention further comprises a cooling unit 6. The cooling unit 6 comprises at least one heat exchanger intended to allow a heat exchange between the air flow and the fluid circulating within the heat exchanger. As illustrated in figure 2 , the cooling unit 6 here comprises a first and a second heat exchanger 8, 10. The first heat exchanger 8 corresponds for example to a condenser while the second heat exchanger 10 corresponds for example to a radiator. The cooling unit 6 further comprises a motor-fan unit 12 corresponding to a fan with blades and an associated motor so as to be able to suck in and release an air flow through the regulating device 1, even when the vehicle is stationary. The cooling unit 6 also comprises a supporting frame 62, visible on the figure 4 , corresponding to a rigid structure, more precisely a rigid plastic frame with four uprights delimiting a surface in which the heat exchangers 8, 10 and said motor-fan unit 12 are arranged. In order to guarantee the continuity of the flow duct 4, the housing 2 is fixed in a sealed manner to the supporting frame 62. In other words, the supporting frame 62 ensures the continuity of the flow duct 4, or in other words, the supporting frame 62 corresponds to a part of the flow duct 4.

[0018] The device 1 for regulating an air flow according to the invention further comprises a closure device 14 comprising a set of closure flaps 18 capable of pivoting in rotation so as to vary the flow rate of the air flow, said closure device 14 is arranged in the flow duct 4 upstream of the cooling unit 6 relative to the flow of the air flow. The closure device 14 further comprises a support frame 16 having bearings so as to carry the closure flaps 18.

[0019] Each shutter 18 comprises a rotation axis materialized by a journal which is inserted into the bearings of the support frame 16. The rotation axes allow the shutters 18 to move from an opening configuration to a closing configuration. The opening configuration, or in other words opening a shutter 18, amounts to placing (by rotation) the shutters 18 in such a way that they oppose the passage of the air flow as little as possible while orienting it appropriately. As illustrated in the figure 2 , in the opening configuration, the shutters 18 are arranged in a horizontal position, in other words they extend in a longitudinal (X) and transverse (Y) direction, and thus ensure that the flow rate for the air flow is maximum, the air inlet 20 being clear. The closing configuration, or in other words closing a shutter 18, amounts to placing the shutters 18 in such a way that they oppose by their front surface as much as possible the flow of the air flow F, in cooperation with the other shutters 18. In this configuration, the shutters 18 are arranged in a vertical position, in other words they extend in a transverse (Y) and vertical (Z) direction, and thus ensure that the flow rate for the air flow is minimal or even zero, the air inlet 20 being closed.Obviously, the shutters 18 are capable of adopting any intermediate position between these two configurations.

[0020] The housing 2 according to the invention, and as illustrated in figures 1 And 4 , is made in two parts, a first part 2a connecting the inlet of the housing 2, and therefore the air inlet 20 of the flow duct 4, where the closure device 14 is arranged, to the cooling unit 6, in particular to the supporting frame 62, and a second part 2b connecting the cooling unit 6, and more precisely the supporting frame 62, to the outlet of the housing 2 and therefore to the air outlet 22 of the flow duct 4. The parts 2a, 2b of the housing comprise fixing means 70 such as clips, hooks, screws with threaded rod / nuts with thread, bolts, etc. of shapes complementary to the fixing means 70 arranged on the supporting frame 62. It is therefore understood that the supporting frame 62 ensures the continuity of the flow conduit 4 between the two parts 2a, 2b of the housing 2.

[0021] According to other embodiments, the parts 2a, 2b may also comprise fixing means of complementary shapes so that each part 2a, 2b can be fixed to one another. It is also conceivable to have a housing 2 in a single piece forming continuity of material between the air inlet 20 and the air outlet 22 of the flow duct 4.

[0022] The housing 2, and more precisely each part 2a, 2b, according to the invention and as illustrated in figure 3 et 4 , may comprise two half-housings 2a 1 , 2a 2 , 2b 1 , 2b 2 . Each pair of half-housings 2a 1 , 2a 2 or 2b 1 , 2b 2 together form a part of the flow conduit 4. In other words, the first pair of half-housings 2a 1 , 2a 2 as illustrated in figure 4 , constitutes the part 2a of the housing 2, namely the part of the flow duct 4 connecting the inlet of the housing 2, in particular the air inlet 20 of the flow duct 4, where the closing device 14 is arranged, to the cooling unit 6, in particular to the supporting frame 62. The second pair of half-housings 2b 1 , 2b 2 , illustrated in figure 3 , constitutes the second part 2b, namely the part of the flow duct 4 connecting the cooling unit 6, and more precisely the supporting frame 62, to the outlet of the housing 2 and therefore to the air outlet 22 of the flow duct 4. Each pair of half-housings 2a 1 , 2a 2 , or 2b 1 , 2b 2 comprises fixing means 72 of complementary shape such as clips where the female part is arranged on one half-housing 2a 1 and the male part is arranged on the other corresponding half-housing 2a 2 or vice versa. These fixing means 72 can be reversible so that the half-housings 2a 1 , 2a 2 , 2b 1 , 2b 2 are fixed to each other in a removable manner, in other words the half-housings 2a 1 , 2a 2 , 2b 1 , 2b 2 can be separated by a reversible connection.

[0023] The housing 2 of the air flow regulation device 1 according to the invention comprises at least one sealing means 64 to prevent any air leakage outside the flow duct 4. In other words, the sealing means 64 ensure that the entire air flow passing through the air inlet 20 of the flow duct 4 exits through the air outlet 22 of the flow duct 4. The sealing means 64 may be arranged at different locations of the regulation device 1. Indeed, each sealing means 64 is arranged at the interface of, that is to say between, two elements of the regulation device 1 that are disjointed, in other words, dissociable or not forming continuity of material. More precisely, in order to achieve optimal sealing, the sealing means 64 is arranged on the peripheral periphery of each element forming a part of the dissociated flow duct 4.In other words, between two elements forming a part of the flow duct 4, a sealing means 64 is arranged on the peripheral connecting surface at the peripheral edges of each of these elements.

[0024] The sealing means 64 can therefore be arranged between each half-housing 2a 1 , 2a 2 and 2b 1 , 2b 2 and / or between a part 2a or 2b of the housing 2 and the supporting frame 62 and / or between each half-housing 2a 1 , 2a 2 and 2b 1 , 2b 2 and the supporting frame 62. It is also possible to envisage positioning a sealing means 64 between the housing 2 and the support frame 16 of the closure device 14 at the air inlet 20.

[0025] Obviously the invention is not limited to the arrangement of the sealing means 64 itself; it is possible to combine the different arrangements mentioned above.

[0026] As illustrated on the figures 5A à 5E, the sealing means 64 may for example correspond to a seal, more precisely an O-ring 64c ( FIG.5C And FIG.5E ), to a 64a foam strip ( FIG.5A And FIG.5D ) or even to an overmolded elastomer lip 64b ( FIG.5B ).

[0027] The sealing means 64 may be airtight or air and watertight.

[0028] In order to better describe the sealing means, the subsequent description relating to the figures 5A à 5E, incorporates the notion of elements of the regulation device 1. It should be understood for the following that these elements correspond to two elements of the regulation device 1 which are separate, removable, dissociable, or assembled to each other by a reversible connection. These elements include the housing 2, each part 2a, 2b of the housing 2, each half-housing 2a 1 , 2a 2 , 2b 1 , 2b 2 , the support frame 16 of the closure device 14 or the carrier frame 62 without any particular distinction or limitation.

[0029] As illustrated in figure 5A , the sealing means 64 may correspond to a foam strip 64a arranged at the interface between two elements 2, 2a, 2b, 2a1, 2a2, 2b1, 2b2, 16, 62 of the regulating device. For this, one of these elements, let us say the first element, may comprise a groove 66 in which the foam strip 64b is arranged and the other element, let us say the second element, may comprise a protuberance 68 extending within the groove 66, that is to say in the direction of the bottom wall of the groove 66, and thus come to bear against the foam strip 64a, the foam strip 64a deforms so as to remain in contact with the protuberance 68 and the air flow can no longer pass through this cooperation. The foam strip 64a, which may be a polyurethane foam, is particularly suitable for airtightness only.

[0030] According to a variant illustrated in figure 5D , the foam strip 64a is arranged at the interface between two elements 2, 2a, 2b, 2a1, 2a2, 2b1, 2b2, 16, 62 of the regulating device 1 within a groove 66 present on the first element, and the second element comes directly into contact with the foam strip 64a without protrusion, the foam strip 64a deforms so as to remain in contact with the second element 2, 2a, 2b, 2a1, 2a2, 2b1, 2b2, 16, 62 and the air flow can no longer pass through this cooperation.

[0031] As illustrated in figure 5C , the sealing means 64 may correspond to an O-ring 64c arranged at the interface between two elements 2, 2a, 2b, 2a1, 2a2, 2b1, 2b2, 16, 62 of the regulating device 1. For this purpose, one of these elements, let us say the first element, may comprise a groove 66 in which the O-ring 64c is arranged and the other element, let us say the second element, may come directly into contact with the O-ring 64c, the O-ring 64c deforms so as to remain in contact with the second element 2, 2a, 2b, 2a1, 2a2, 2b1, 2b2, 16, 62 and the air flow can no longer pass through this cooperation. The O-ring 64c, which may be made of rubber or any other elastomer, is particularly suitable for air and water tightness. Of course, the second element may also comprise a protrusion 68 extending within the groove 66 and bearing against the O-ring 64c as illustrated in figure 5E .

[0032] As illustrated in figure 5B , the sealing means 64 may correspond to an overmolded lip 64b arranged at the interface between two elements 2, 2a, 2b, 2a1, 2a2, 2b1, 2b2, 16, 62 of the regulating device. For this, one of these elements, say the first element, may comprise a groove 66 and an overmolded lip 64b may be overmolded on the other element, say the second element, and come directly into contact with the bottom wall of the groove 66, that is to say against the first element, the overmolded lip 64b deforms so as to remain in contact with the first element 2, 2a, 2b, 2a1, 2a2, 2b1, 2b2, 16, 62 and the air flow can no longer pass through this cooperation. The overmolded lip 64b, which may be made of rubber or any other elastomer (for example SEBS or polystyrene-b-poly(ethylene-butylene)-b-polystyrene), is particularly suitable for air and water tightness.

[0033] The flow duct 4 comprises an air inlet 20 and an air outlet 22, the latter being composed of at least two separate ducts, the flap which will be described later being capable of closing each of said ducts. The air outlet 22 of the flow duct 4 comprises a clearing duct 24 arranged to guide the air flow towards the outside of the vehicle and a cooling duct 26 arranged to guide the air flow towards the engine compartment of the vehicle. As illustrated in the figure 3 , the cooling duct 26 here corresponds to a duct where an opening 28 provided with a grid 30 is made within a wall of the housing 2 thus allowing the air flow to flow from the flow duct 4 towards the engine compartment. The cleaning duct 24 here corresponds to a duct where an opening 32 is made within a wall of the housing 2 thus allowing the air flow to flow from the flow duct 4 towards the outside of the vehicle.

[0034] The device 1 for regulating an air flow according to the invention further comprises a flap 34 arranged within the flow duct 4 downstream of the cooling unit 6 relative to the flow of the air flow. The flap 34 is of the drum type as illustrated in the figure 2 because, given that such a regulating device extends over a large part of the width of the vehicle (Y axis) and thus reaches more than one meter, the drum shutter, due to its structure which has better mechanical resistance, is better suited for such use. Other shutters may be envisaged such as a sliding shutter (also known under the English name sliding door) comprising a sliding door on which is arranged at least one rack and a gear complementary to the rack rotated around an axis by an actuator in order to set this shutter in motion, in particular according to a translational movement, according to an embodiment not illustrated.

[0035] The drum shutter 34 comprises a rotation axis 36 in the form of a shaft allowing the pivoting of the shutter 34. The drum shutter 34 further comprises three solid walls. Two side walls 38 arranged at the two opposite ends of the rotation axis 36, these two side walls 38 are parallel and are inscribed in a plane defined by the XZ axes perpendicular to the rotation axis 36, and a transverse wall 40 connecting the side walls to each other. The transverse wall 40 is inscribed in a plane defined by the XZ axes of curved shape allows the flow or drying up of the air flow in a duct 24, 26 of air outlet 22 of the flow duct 4 according to its positioning. The volume between the side walls 38, the transverse wall 40 and the axis of rotation 36 is unoccupied so that the air flow is able to pass between these elements as illustrated by the arrow F2 on the figure 2 .

[0036] The transverse wall 40 of the drum shutter 34 is capable of closing the cleaning duct 24 as illustrated in the figure 2 The transverse wall 40 of the drum flap 34 is also capable of closing the cooling duct 26 according to an embodiment not illustrated.

[0037] The various walls of the flap 34 match the shape of the walls of the housing 2 so as to ensure good sealing, the flap 34 may also further comprise elastomer lips 42 overmolded at the ends of the walls. Thus the wall of the housing 2 where the cooling duct 26 is arranged is of substantially rounded shape, so that the curved transverse wall 40 of the flap 34 can completely close this outlet duct.

[0038] When the vehicle is moving, the flap 34 is arranged to close the cooling duct 26, the air flow therefore passing through the cleaning duct 24. When the vehicle is parked at a terminal (the battery being recharged), the flap 34 is arranged to close the cleaning duct 24 cooling duct 26, the air flow therefore passing through the cooling duct 26 as illustrated in the figure 2 . Shutter 34 is capable of adopting any intermediate position.

[0039] Still according to the invention, the cooling unit 6 is inclined relative to the closure device 14. In other words, the median planes of the cooling unit 6 and the closure device 14 form an angle other than 0° (non-zero), in particular an angle within a range between 10 and 80°, more precisely within a range between 30° and 60°. Such an arrangement makes it possible to reduce the steric bulk of the regulation device 1.

[0040] Still according to the invention, it may prove advantageous for vanes 44 to be arranged upstream and / or downstream of the cooling unit 6 relative to the flow of the air flow. The vanes 44 correspond to air guides in the form of walls with rounded shapes defining corridors for the air flow in order to distribute the air flow F1 ( figure 2 ) over the entire surface of the heat exchangers 8, 10 of the cooling unit 6, this results in better thermal efficiency.

[0041] In order to improve this thermal efficiency, it is beneficial for the vanes 44 to extend from the shutter device 14 to the cooling unit 6. The vanes 44 may, for example, extend the continuity of the shutter flaps 18 of the shutter device 14 when they are in the open configuration. The vanes 44 may also have a general S-shape with a leading edge corresponding to one end of the vane extending in a horizontal plane defined by the X and Y axes, a trailing edge substantially parallel to the leading edge, however at a different height (Z), and an inclined section or ramp connecting the leading edge and the trailing edge which extends mainly along a vertical axis (Z). The invention is not limited to the shape of the vanes 44 as long as they serve as a guide for the air flow; the vanes 44 may, for example, be quarter-circle shaped.

[0042] The first flat end portion of the blade 44 intended to be crossed by the air flow F1 corresponds to the leading edge and is flat. The second and last flat end portion intended to be crossed by the air flow F1 corresponds to the trailing edge and is also flat. The inclined section is not part of the leading and trailing edges.

[0043] The blades 44 extend between the closure device 14 and the cooling unit 6 without being in contact with these elements. In order to better guide the air, the leading and trailing edges of the blades 44 are arranged in the respective proximity of the closure device 14 and the cooling unit 6, without being in abutment against these elements.

[0044] Still according to the invention, the passage section of the flow duct 4 increases from the air inlet 20 of the flow duct 4 to the cooling unit 6 and narrows from the cooling unit 6 to the air outlet 22 of the flow duct 4 according to the direction of flow of the air flow. In other words, the passage section of the flow duct 4 has at least one dimension (width and / or height) which increases as the length increases, or as one approaches the cooling unit 6 starting from the air inlet 20, according to the direction of flow of the air flow. Similarly, the passage section of the flow duct 4 has at least one dimension (width and / or height) which decreases as the length increases, or as one moves away from the cooling unit 6 towards the air outlet 22, depending on the direction of flow of the air flow.

[0045] Still according to the invention, sound absorption parts can be arranged within the housing 2, thus ensuring a sound insulating coating of the flow duct 4 by eliminating or limiting the propagation of noise towards the outside. The sound absorption part can for example correspond to a layer of polyurethane foam which has open or closed pores and preferably impregnated with a vinylidene copolymer, or even to a cavity functioning as a Helmholtz resonator.

[0046] According to a non-illustrated embodiment, a motor vehicle comprises a bumper beam below which is placed a grille or grill. This grille is fixed and remains in the open position to allow an incoming air flow to pass. The vehicle according to the invention comprises an air intake regulation device 1 as described above.

[0047] The motor vehicle according to the invention therefore comprises an air intake provided with a grille and a device 1 for regulating this air intake. The air outlet 22 of the flow duct 4 comprises a clearing duct 24 arranged to lead the air flow towards the outside of the vehicle and a cooling duct 26 arranged to lead the air flow towards the engine compartment of the vehicle.

[0048] The vehicle according to the invention may further comprise an additional inlet as well as an additional duct connecting said additional inlet with the cleaning duct leading the air flow towards the exterior of the vehicle. This makes it possible to accentuate the venturi effect of the cleaning duct, thus increasing the circulating air flow rate and thus improving thermal efficiency. The additional inlet may also be provided with a grille in order to prevent any foreign bodies (branches, leaves, etc.) from entering the additional duct.

[0049] It should be understood, however, that these exemplary embodiments are given by way of illustration of the subject of the invention. The invention is not limited to these embodiments described above and provided solely by way of example. It encompasses various modifications, alternative forms and other variations that may be envisaged by those skilled in the art within the scope of the present invention as defined by the claims.

Claims

1. Device (1) for regulating an air stream for an air inlet of a motor vehicle, comprising a housing (2) defining a flow duct (4) in which an air stream flows, in which a cooling unit (6) comprising at least one heat exchanger (8, 10) and a motor-fan unit (12) is at least partially arranged, the housing (2) comprising a sealing means (64, 64a, 64b, 64c) to prevent any air from leaking out of the flow duct (4), the cooling unit (6) comprises a support frame (62) in which said at least one heat exchanger (8; 10) and said motor-fan unit (2) are arranged, the housing (2) being fixed to the support frame (62) in such a way that the support frame (62) corresponds to part of the flow duct (4), characterized in that the housing (2) comprises a first part (2a) arranged upstream of the support frame (62) and connecting an air inlet (20) of the flow duct (4) to the support frame (62), and a second part (2b) arranged downstream of the support frame (62), said sealing means (64, 64a, 64b, 64c) being arranged between the support frame (62) and each part (2a, 2b), and in that the first part (2a) is made up of two half-housings (2a1, 2a2) which together form said flow duct (4), the sealing means (64, 64a, 64b, 64c) being arranged between each half-housing (2a1, 2a2).

2. Regulating device (1) according to Claim 1, wherein the sealing means (64, 64a, 64b, 64c) corresponds to an O-ring (64c), to an overmoulded lip (64b) or to a foam strip (64a).

3. Regulating device (1) according to either of Claims 1 and 2, wherein the sealing means is airtight and / or watertight.

4. Regulating device (1) according to one of the preceding claims, wherein the flow duct (4) comprises an air inlet (20) and an air outlet (22), said air outlet (22) being made up of at least two separate ducts (24, 26), said device comprising at least one flap (34) being capable of shutting off each of said ducts (24, 26).

5. Regulating device (1) according to one of the preceding claims, wherein a shut-off device (14) comprising a set of shut-off flaps (18), which are capable of pivoting rotatably so that they vary the flow rate of the air stream, is arranged in the flow duct (4) upstream of the cooling unit (6) relative to the flow of the air stream.

6. Regulating device (1) according to Claim 5, wherein the cooling unit (6) is inclined relative to the shut-off device (14).

7. Regulating device (1) according to one of the preceding claims, wherein the housing (2) or each part of the housing (2a, 2b) is made up of two half-housings (2a1, 2a2, 2b1, 2b2) which together form said flow duct (4), a sealing means (64, 64a, 64b, 64c) being arranged between each half-housing (2a1, 2a2, 2b1, 2b2) .

8. Regulating device (1) according to one of the preceding claims, wherein a sealing means (64, 64a, 64b, 64c) is arranged between the shut-off device (14) and the housing (2).

9. Motor vehicle comprising an air inlet and a regulating device (1) for said air inlet according to one of Claims 1 to 9.