Aerator with a movable guide nozzle and vehicle equipped with such an aerator

Abstract

Aerator (1) having a fixed inlet (11) through which an airflow (F) enters the aerator (1) and an outlet (12) through which the airflow exits the aerator (1), at least two channels (C1, C2, C4) extending from the inlet (11) to the outlet (12). The aerator (1) further comprises a guide opening (13), movable between a first position in which said guide opening (13) is in front of at least the air inlet of the first channel (C1, C2) so as to present a first passage cross-section opposite said air inlet of the first channel (C1, C2), and a second position in which said movable guide opening (13) is in front of at least the air inlet of the second channel (C4), and presents a second passage cross-section opposite the first channel (C1, C2) different from the first passage cross-section. Figure for the abbreviation: Fig. 1

Description

Title of the invention: Aerator with movable guide mouth and vehicle comprising such an aerator

[0001] The invention relates to an aerator for a motor vehicle, a dashboard comprising such an aerator and a vehicle equipped with such an aerator.

[0002] Vehicles conventionally have vents arranged in their passenger compartments, the role of which is to introduce air-conditioned air into the passenger compartment of the vehicle. The vents are, for example, installed on a dashboard of the vehicle. It is also known to produce an vent in which the direction of the outgoing air flow is modified using the Coanda effect. The Coanda effect corresponds to the tendency of a moving fluid to follow convex surfaces. Thanks to this effect, it is possible to guide the outlet flow by distributing the flow between different corridors having particular surface geometries, inside the vent.This makes it possible to manage the direction of the air flow at the vent outlet without using movable guide vanes, and to reduce the visible section of the vent without reducing performance: for example, by using the Coanda effect to manage the vertical direction of the air flow, the visible section of the vent along this vertical axis can be reduced.

[0003] Document FR3075696 describes such an aerator comprising a duct divided into two channels, an upper channel and a lower channel, separated by a core. A flap arranged at the inlet of the duct, upstream of the core following the air flow, modifies the air flow passing through each of the channels. When the air flow passing through the upper channel is greater than the flow passing through the lower channel, the air leaving the aerator is directed downwards due to the shape of the two channels. Vertical fins, parallel to each other and orientable along a vertical axis, are arranged in the channels and make it possible to orient the air flow leaving the aerator laterally depending on their orientation.

[0004] Document CN113459769 describes an aerator comprising several channels, and comprising a means for laterally directing the outlet flow by modifying the air flow at the inlet of the aerator. For this, the aerator comprises four closing flaps upstream of each of the ducts, so that the outlet air flow is directed according to the air flow passing through each channel, the air flow being regulated by the opening or closing of the different flaps.

[0005] The disadvantage of such a solution is that it requires several flaps. In addition, it is necessary to coordinate the opening and closing of each of the flaps to obtain the desired direction of the air flow at the outlet of the aerator. This solution is complex to implement and requires a large number of parts, mechanisms, and enough space to allow the flaps to move in the ventilator. In addition, the airflow is often disturbed and turbulent because of the flaps, especially when they are in intermediate positions between fully open and fully closed, which leads to pressure losses, overspeeds and noise pollution.

[0006] The objective of the invention is to overcome these drawbacks. In particular, one of the aims of the invention is to propose an aerator of simpler design. One of the aims is in particular to propose an aerator with several channels which does not require a flap upstream of it to manage the air flows entering the different channels while maintaining a directivity of the outgoing air flow.

[0007] This object is achieved according to the invention, by means of an aerator comprising a fixed inlet mouth through which an air flow enters the aerator and an outlet mouth through which the air flow leaves the aerator, at least two channels extending from the inlet mouth to the outlet mouth, guiding the air between the inlet mouth and the outlet mouth, each channel comprising an air inlet at the inlet mouth and an air outlet at the outlet mouth, the channels being arranged so that the direction of the air flow leaving through the outlet mouth depends on the air flow passing through each of said channels, remarkable in that said aerator further comprises a guide mouth, arranged upstream of the channels and through which the air flow enters the aerator,the guide mouth being movable between a first position in which said guide mouth is in front of at least the air inlet of a first channel so as to show a first passage section opposite said air inlet of the first channel, and a second position in which said movable guide mouth is in front of at least the air inlet of another channel and shows a second passage section opposite the first channel different from the first passage section.

[0008] Thus advantageously, the air flow rates passing through the first channel and the second channel vary as a function of the position of the guide mouth relative to the inlet mouth, for the same air flow passing through said guide mouth. The direction of the air flow exiting through the outlet mouth therefore varies as a function of the position of the guide mouth. It is therefore not necessary to provide flaps upstream of the channels to manage the air flows entering each of the channels, eliminating the risks of noise and pressure losses linked to the presence of flaps. The absence of flaps also makes it possible to avoid having to resort to a complex mechanism controlling in a coordinated manner the position of different flaps relative to each other, consequently simplifying the construction of the aerator.

[0009] In a particular embodiment of the invention, the movable guide mouth is movable substantially in a plane perpendicular to the general direction of the air flow passing through the inlet mouth.

[0010] Thus advantageously, the movement of the guide mouth modifies the distribution of the flow rates of the air flow passing through each of the channels without impacting the flow rate and direction of the total air flow entering the aerator.

[0011] In a particular embodiment of the invention, the aerator comprises a housing forming a duct between an upper wall and a lower wall, and a core extending transversely to the duct and separating said duct into two channels, one channel called the upper channel between the upper wall and the core and another channel called the lower channel between the lower wall and the core, arranged so as to direct the flow of air exiting through the outlet mouth as a function of the flow rate passing through each of said channels.

[0012] Thus advantageously, the production of the channels is obtained in a simple manner, with a minimum of parts. The shape of the core, for example in an ogive section, and of the upper and lower walls allow a particular orientation of the air flow leaving the aerator through the outlet mouth depending on the air flow rates passing through each of these channels.

[0013] In another embodiment of the invention, the aerator comprises a lower separating wall extending between the core and the lower wall of the housing, and an upper separating wall extending between the core and the upper wall of the housing, so as to form at least four channels, a first upper channel, a second upper channel, a first lower channel and a second lower channel, said walls and the core being arranged so as to direct the air flow exiting through the outlet mouth as a function of the flow rate passing through each of the channels, the guide mouth being movable between at least four different positions opposite said channels so as to modify the flow rate of the air flow entering each of said channels as a function of the position of said guide mouth.

[0014] Thus, advantageously, the air flow exiting through the outlet mouth can have a large number of directions while having a simple device managing the entry of the air flow into each of the channels via the movable guide mouth.

[0015] In another embodiment of the invention, the first lower channel and the first upper channel, and respectively the second lower channel and second upper channel, are located opposite each other, on either side of the core, and each of said channels comprises fixed fins, the fins of the first upper channel and of the first lower channel directing the air flow in a first direction parallel to a transverse axis along which the core extends, the fins of the second upper channel and of the second lower channel directing the air flow in a second direction parallel to the transverse axis opposite to the first transverse direction, that is to say in a transverse direction opposite to that in which the fins of the first upper channel and of the first lower channel direct the air flow of air.

[0016] Thus advantageously, the aerator can direct the flow of air exiting through the outlet mouth in various directions combining at least one vertical direction and one transverse direction orthogonal to the vertical direction, depending on the position of the movable guide mouth.

[0017] In another embodiment of the invention, the aerator comprises an air intake inlet intended to introduce the air blown by an air conditioning device into the aerator, arranged upstream of the guide mouth and connected to said guide mouth by a flexible guide conduit, so as to allow the movement of the guide mouth relative to said intake inlet.

[0018] Thus advantageously, the air blown by the air conditioning device is channeled efficiently towards the guide vent, without leakage, and the flexibility of the guide duct allows the movement of said guide vent. Preferably, the intake inlet is fixed relative to the aerator.

[0019] In another embodiment of the invention, the aerator comprises a deformable sealing device between the inlet mouth and the guide mouth so as to prevent air from passing between the guide mouth and the inlet mouth.

[0020] Thus advantageously, the sealing device avoids any risk of air leakage between the guide mouth and the fixed inlet mouth, while allowing the guide mouth to move thanks to its ability to adapt to the position of said guide mouth.

[0021] In a particular embodiment of the invention, the sealing device is a flexible membrane fixed on one side around the guide mouth and on the other around the inlet mouth.

[0022] Thus advantageously, the sealing device is produced in a simple manner, by a single part.

[0023] The invention also relates to a vehicle dashboard comprising an air vent as described above, as well as a vehicle comprising such a dashboard.

[0024] The invention also relates to a vehicle comprising an air vent as described above.

[0025] The invention will be better understood on reading the following description, given solely by way of example and with reference to the appended drawings, in which:

[0026] [Fig-1] represents a perspective view of the aerator according to the invention, with a guide mouth in a first position.

[0027] [Fig.2] represents a perspective view of the aerator according to the invention, with a guide mouth in a second position.

[0028] [Fig.3] represents a front view of the outlet mouth of the aerator of figures 1 and 2.

[0029] [Fig.4] represents a perspective view similar to [Fig.l] of a variant of the sheave aerator installation.

[0030] The drawings are schematic representations to facilitate understanding of the invention. The components are not necessarily shown to scale. The same references correspond to the same components from one figure to another.

[0031] [Fig.l] represents an aerator 1 according to the invention, comprising a guide mouth 13 through which an air flow F enters said aerator 1, a fixed inlet mouth 11 through which the air flow F enters a part of the aerator 1, that is to say that the air flow F passes through the guide mouth 13 then the fixed inlet mouth. The aerator 1 comprises an outlet mouth 12 through which the air flow leaves the aerator 1 after having passed through it. When the aerator 1 is arranged on a vehicle dashboard, the outlet mouth is located on the passenger compartment side of the vehicle so as to send the air flow into the passenger compartment of the vehicle, and the fixed inlet mouth 11 and the guide mouth 13 are located for example inside a dashboard.

[0032] An X axis represents the main direction of the air flow entering the aerator 1, called the longitudinal axis, a Y axis a transverse direction perpendicular to the X axis, and a Z axis a vertical direction perpendicular to the X and Y axes. The up and down directions are taken in the reference frame of the vehicle when the aerator 1 is installed in said vehicle, that is to say in the vertical direction Z corresponding substantially to the vertical direction of the vehicle, the up and down being relative to the top and bottom of the vehicle.

[0033] The aerator 1 illustrated in the figures comprises four channels C1, C2, C3, C4 extending from the inlet mouth 11 to the outlet mouth 12, guiding the air entering through the inlet mouth 11 to the outlet mouth 12. Each channel C1, C2, C3, C4 comprises an air inlet at the inlet mouth 11 and an air outlet at the outlet mouth 12. The air flow F passes through the guide mouth 13 and the inlet mouth 11, then separates to then pass through the channels C1, C2, C3, C4 to the outlet mouth 12.

[0034] The channels C1, C2, C3, C4 are arranged so that the direction of the air flow exiting through the outlet 12 depends on the air flow rates passing through each of said channels C1, C2, C3, C4, using for example the Coanda effect. In other words, each channel C1, C2, C3, C4 gives a particular direction to the air flows leaving it, and the recombination of the air flows leaving these channels C1, C2, C3, C4, and therefore leaving the aerator 1 through the outlet 12, reforms an outlet air flow having a given general direction, dependent on the air flows passing through said channels C1, C2, C3, C4.

[0035] The guide mouth 13, arranged upstream of the channels C1, C2, C3 and C4 and by which the air flow F enters the aerator 1, is movable between a first position in which said guide mouth 13 is in front of at least the air inlet of a first channel Cl so as to show a first passage section opposite said air inlet of the first channel Cl, and a second position in which said movable guide mouth 13 is in front of at least the air inlet of another of the channels C2, C3, C4, and shows a second passage section opposite the first channel Cl different from the first passage section.

[0036] In other words, in the first position, the guide mouth 13 is opposite at least part of the air inlet of the first channel C1 so that the air passing through the guide mouth 13 enters said first channel C1 with a first air flow rate, and in the second position the guide mouth 13 is at least partly opposite the air inlet of another channel C2, C3 or C4, so that the air passing through the movable guide mouth 13 enters said other channel C2, C3 or C4, the air flow rate then passing through the first channel C1 being at a second air flow rate lower than the first air flow rate, for the same air flow entering the aerator 1, that is to say passing through the guide mouth 13. The flow rate of the air flow passing through the other channel C2, C3 or C4 in this second position of the guide mouth 13 is then for example greater than that which passes through this other channel C2, C3 or C4 when the guide mouth 13 is in its first position.

[0037] The movable guide mouth 13 is able to move in front of each of the channels C1, C2, C3 and C4, and to take up positions in which it is arranged at least partly opposite several of these channels C1, C2, C3 and C4. That is to say, the guide mouth 13 moves continuously between its different positions so as to variably distribute the air flow rates passing through each of the channels C1, C2, C3 and C4. In other words, the guide mouth 13 moves relative to the inlet mouth 11 to take up different positions in front of each of the channels C1, C2, C3 and C4, so that the air flow passing through the guide mouth 13 is variably distributed between each of the channels C1, C2, C3 and C4 depending on the position of said guide mouth 13.For example, in the first position, the guide mouth 13 is entirely opposite the air inlet of the first channel C1, so that almost all of the air flow F passes through said first channel C1, and in the second position, the guide mouth 13 is entirely opposite the air inlet of a second channel C2, so that almost all of the air flow F passes through said second channel C2. The guide mouth 13 can of course take other positions relative to the channels C1, C2, C3 and C4.

[0038] In the embodiments presented, the movable mouth 13 moves substantially in a plane YZ perpendicular to the general direction of the air flow F passing through the fixed inlet mouth 11. Similarly, the inlet mouth 11 extends sen possibly in the YZ plane parallel to the transverse axis Y and vertical Z, that is to say that the inlet mouth 11 has edges defining an opening through which the air flow F passes in the longitudinal direction X, said edges being substantially in this same YZ plane.

[0039] To allow the guide mouth 13 to move, it is for example mounted on a first slide parallel to the transverse direction Y, itself mounted on a second slide parallel to the vertical direction Z, not shown in the figures. In another variant, the guide mouth 13 is fixed for example to a part of the aerator 1, such as a housing 2, by several connecting rods articulated by ball joints so as to allow movement at least along the transverse Y and vertical Z axes.

[0040] In the figures, the aerator 1 comprises a housing 2 forming a conduit between an upper wall 25 and a lower wall 26, as well as a core 21 extending in the transverse direction Y, in the conduit, so as to separate said conduit into several channels: a channel called the upper channel C1, C2 formed between the upper wall 25 and the core 21, and a channel called the lower channel C3, C4 between the lower wall and the core 21. In other words, the housing 2 comprises two opposite side walls connecting the upper wall 25 and the lower wall 26 together, the conduit being delimited by the upper wall 25, lower wall 26 and the two side walls, and the core 21 extends from one side wall to the other.

[0041] The core 21 and the lower 26 and upper 25 walls are arranged so as to orient the air flow F exiting through the outlet 12 as a function of the flow rate passing through each of said channels C1, C2, C3, C4. For example, the core 21 has an ogival section, and the upper 25 and lower 26 walls are of complementary shape so as to form channels C1, C2, C3, C4 each comprising a curved portion around the core 21, close to the outlet 12. This shape of the channels C1, C2, C3, C4 makes it possible to give a particular direction to the air flow exiting the aerator 1 as a function of the air flow rate passing through each of said channels C1, C2, C3, C4. The upper channel Cl, C2 directs the flow downwards, and the lower channel C3, C4 directs the flow upwards, the upper channel Cl, C2 being located above the lower channel C3, C4.

[0042] In the embodiment of the figures, a lower separating wall 23 extends between the core 21 and the lower wall 26 of the housing 2, in the lower channel C3, C4, and an upper separating wall 22 extends between the core 21 and the upper wall 25 of the housing 2 in the upper channel C1, C2. The aerator 1 thus comprises four channels C1, C2, C3, C4: a first upper channel C1, a second upper channel C2, a first lower channel C3 and a second lower channel C4. The walls of the housing 2 and the core 21 are arranged so as to direct the air flow exiting through the outlet 12 as a function of the flow rate passing through each of the channels C1, C2, C3, C4. The guide mouth 13 is movable between at least four different positions facing said channels C1, C2, C3, C4, and a multitude of intermediate positions between these four positions, so as to modify the flow rate of the air flow entering each of said channels C1, C2, C3, C4 as a function of the position of said guide mouth 13. For example, the guide mouth 13 has four extreme positions, each of these four extreme positions being respectively facing one of the channels C1, C2, C3, C4, and is movable continuously between each of these four extreme positions, that is to say that it is capable of taking an infinite number of different positions between each of these four extreme positions.

[0043] In the embodiment of the figures, the first lower channel C3 and the first upper channel C1 are opposite each other, that is to say that the first upper channel C1 is above the first lower channel C3 along the Z axis. Similarly, the second upper channel C2 is above the second lower channel C4 along the Z axis. Each of said channels C1, C2, C3, C4 comprises fixed fins 24.1, 24.2, 24.3, 24.4. The respective fins 24.1, 24.3 of the first upper channel C1 and of the first lower channel C3 direct the air flow passing through their respective channel in the same transverse direction Y, that is to say with a component following the same transverse direction Y, and the respective fins 24.2, 24.4 of the second upper channel C2 and of the second lower channel C4 direct the air flow in a transverse direction opposite to that of the fins 24.1, 24.3 of the first upper channel C1 and lower channel C3.

[0044] For example, the first upper channel C1 and the first lower channel C3 are arranged on the left side of the housing 2 in view facing the outlet mouth 12 as illustrated in [Fig. 3], and the respective fins 24.1, 24.3 of this first upper channel C1 and of this first lower channel C3 direct the outgoing air flow to the right according to this same view of [Fig. 3]. Conversely, the respective fins 24.2, 24.4 of the second upper channel C2 and lower channel C4 direct the air flow passing through said channels C2, C4 to the left, said channels C2, C4 being on the right of the housing 2 still according to [Fig. 3]. The shape of the upper channels C1, C2 and of the core 21 directs the air flow exiting said channels downwards, while the shape of the lower channels C3, C4 and of the core 21 directs the air flow exiting said channels upwards.In other words, the air flow leaving the first upper channel C1 is directed downwards to the right, that leaving the first lower channel C3 upwards to the right, that leaving the second upper channel C2 downwards to the left, and that leaving the second lower channel C4 upwards to the left, the directions being taken according to the view of [Fig. 3]. In [Fig. 3] which shows a view of the aerator 1 from the outlet mouth 12, arrows f1, f2, f3 and f4 illustrate the direction of the air leaving respectively through each of the channels C1, C2, C3, C4 when the guide mouth 13 is . arranged only opposite one of these channels Cl, C2, C3, C4.

[0045] Thus, by modifying the position of the movable guide mouth 13, the air flow rates passing through the different channels C1, C2, C3, C4 are modified and the direction of the air flow exiting through the outlet mouth 12, resulting from the combination of the air flows f1, f2, d3 and f4 exiting from each of the channels C1, C2, C3 and C4, is modified.

[0046] [Fig.l] illustrates the aerator 1 with the guide mouth in a so-called central position with respect to the inlet mouth 11: that is to say that the air flow F is distributed equally in each of the four channels C1, C2, C3, C4. The air flow exiting through the outlet mouth 12 is then in a so-called central direction, that is to say approximately in the middle of the extreme directions of air diffusion by the aerator. For example, this central direction is parallel to the longitudinal direction X.

[0047] In the representations, each of the channels C1, C2, C3, C4 are arranged symmetrically: the channels C1 and C2 are respectively substantially symmetrical with respect to the channels C3 and C4 with respect to a plane parallel to the transverse axes Y and longitudinal X, and the channels C1 and C3 are respectively substantially symmetrical with the channels C2 and C4 with respect to a plane parallel to the longitudinal axes X and vertical Z.

[0048] In the representation of [Fig. 2], the guide mouth 13 is arranged opposite only the channel C2: that is to say on the upper and left part of the inlet mouth 11, according to the view of [Fig. 2]. The main part of the air flow F therefore passes, in this position of the guide mouth 13, only the second upper channel C2. The air flow leaving through the outlet mouth 12 is therefore directed downwards and to the right, placing oneself in this view of [Fig. 2] to define the left and the right, because the main part of the air flow passes only this second upper channel C2. Or, in other words, placing oneself according to [Fig. 3], the air flow leaving the aerator is oriented downwards to the right, substantially following the arrow f2. The air flow exiting the aerator 1 through the outlet 12 of course also includes a component along the longitudinal axis so as to diffuse the air.

[0049] In Figures 1, 2, and 4, the aerator 1 comprises an air intake inlet 14 arranged upstream of the guide mouth 13 and connected to said guide mouth 13 by a flexible guide duct 15 so as to allow the movement of the guide mouth 13 relative to said intake inlet 14. The intake inlet 14 is for example fixed. It is for example connected to a ventilation duct supplying the air blown by an air conditioning device not shown. The air blown by the air conditioning device is sent to the aerator 1 by the ventilation duct, and initially passes through the intake inlet 14, then the guide duct 15 before passing through the guide mouth 13.

[0050] As illustrated in the variant of [Fig.4], in order to prevent part of the air flow does not escape between the guide mouth 13 and the inlet mouth 11, a deformable sealing device 3 is positioned between the inlet mouth 11 and the guide mouth 13. The sealing device 3 is for example a flexible membrane 3 fixed on one side around the guide mouth 13 and on the other around the inlet mouth 11. For example, the membrane 3 is made of elastic material, such as rubber or silicone, and is airtight to prevent air leaks. In a variant, to increase its capacity to deform and generate less force on the guide mouth 13 during its movement, the flexible membrane 3 has an accordion-type shape, as illustrated in [Fig.4], so as to allow greater deformation generating less force. That is to say that the flexible membrane 3 comprises an alternation of concentric ribs and grooves, centered on the guide mouth 13. As illustrated in [Fig.4], the inlet mouth 11 and the guide mouth 13 are for example rectangular, and the grooves and ribs also each draw a rectangular-shaped perimeter.

[0051] Figures 1 to 4 illustrate embodiments of the invention in which the aerator 1 comprises 4 channels C1, C2, C3 and C4. Alternatively, the aerator comprises a different number of channels, for example 2 or more channels. The inlet mouth 11, the intake inlet 14 and the guide mouth 13 are illustrated as rectangular in the figures. Alternatively, other shapes may be given, for example ellipsoidal in shape.

Claims

Claims

1. A ventilator (1) comprising a fixed inlet (11) through which an air flow (F) enters the ventilator (1) and an outlet (12) through which the air flow leaves the ventilator (1), at least two channels (Cl, C2, C3, C4) extending from the inlet (11) to the outlet (12), guiding the air entering through the inlet (11) to the outlet (12), each channel (Cl, C2, C3, C4) comprising an air inlet at the inlet (11) and an air outlet at the outlet (12), the channels (Cl, C2, C3, C4) being arranged so that the direction of the air flow leaving the outlet (12) depends on the air flow rates passing through each of said channels (Cl, C2, C3, C4), characterized in that said aerator (1) further comprises a guide mouth (13), arranged upstream of the channels (Cl, C2, C3, C4) and through which the air flow (F) enters the aerator,the guide mouth (13) being movable between a first position in which said guide mouth (13) is in front of at least the air inlet of a first channel (Cl) so as to show a first passage section opposite said air inlet of the first channel (Cl) and a second position in which said movable guide mouth (13) is in front of at least the air inlet of another channel (C2, C3, C4), and shows a second passage section opposite the first channel (Cl) different from the first passage section.,

2. Aerator (1) according to the preceding claim, the guide mouth (13) of which is movable substantially in a plane (YZ) perpendicular to the general direction of the air flow (F) passing through the inlet mouth (H).

3. Aerator (1) according to one of the preceding claims, comprising a housing (2) forming a duct between an upper wall and a lower wall, and a core (21) extending transversely to the duct and separating said duct into two channels (Cl, C2), a channel called the upper channel (Cl, C2) between the upper wall (25) and the core (21) and a channel called the lower channel (C3, C4) between the lower wall (26) and the core (21), arranged so as to direct the air flow (F) exiting through the outlet mouth (12) as a function of the flow rate passing through each of said channels (Cl, C2, C3, C4).

4. Aerator (1) according to claim 3, comprising a lower partition wall (23) extending between the core (21) and the in- lower (26) and an upper separating wall (22) extending between the core (21) and the upper wall (25), so as to form at least four channels (Cl, C2, C3, C4), a first upper channel (Cl), a second upper channel (C2), a first lower channel (C3) and a second lower channel (C4), said walls and the core (2) being arranged so as to direct the air flow exiting through the outlet mouth (12) as a function of the flow rate passing through each of the channels (Cl, C2, C3, C4), the guide mouth (13) being movable between at least four different positions opposite said channels (Cl, C2, C3, C4) so ​​as to modify the flow rate of the air flow entering each of said channels (Cl, C2, C3, C4) as a function of the position of said guide mouth (13).

5. Aerator (1) according to the preceding claim, the first lower channel (C3) and the first upper channel (C1), and respectively the second lower channel (C4) and second upper channel (C2), are located opposite each other, on either side of the core, and each of said channels (C1, C2, C3, C4) comprises fixed fins (24.1, 24.2, 24.3, 24.4), the fins (24.1, 24.3) of the first upper channel (C1) and of the first lower channel (C3) directing the air flow in a first direction parallel to a transverse axis (Y) along which the core (21) extends, the fins (24.2, 24.4) of the second upper channel (C2) and of the second lower channel (C4) directing the air flow in a second direction parallel to the transverse axis (Y) opposite to the first transverse direction.

6. Aerator (1) according to one of the preceding claims, comprising an air intake inlet (14) intended to introduce the air blown by an air conditioning device into the aerator (1), arranged upstream of the guide mouth (13) and connected to said guide mouth (13) by a flexible guide duct (15), so as to allow the movement of the guide mouth (13) relative to said intake inlet (14).

7. Aerator (1) according to one of the preceding claims, comprising a deformable sealing device (3) between the fixed inlet mouth (11) and the guide mouth (13) so as to prevent air from passing between the guide mouth (13) and the inlet mouth (11).

8. Aerator (1) according to the preceding claim, the sealing device (3) of which is a flexible membrane (3) fixed on one side around the guide mouth (13) and on the other around the inlet mouth

9. (H). Vehicle dashboard comprising an aerator (1) according to one of

10. of the preceding claims. Vehicle comprising a dashboard according to claim 9 or an aerator (1) according to one of claims 1 to 8.

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