• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to an aerator comprising a hollow body (2) capable of channeling an air flow (F) from an inlet opening (3) to an outlet opening (4) leading to an enclosure, a member air guide (9) extending in said body (2) and defining two guide surfaces (9A, 9B) opposite one another delimiting with said body (2) two channels of flow (10, 11), a first fin (12) pivotally mounted in said body upstream of said guide member (9) around a transverse axis (A) so as to allow the ratio to be adjusted as a function of its position between the first and second quantities of air, said guide member being constituted by a second fin (9) pivotally mounted about said transverse axis (A), said fins (12, 9) being articulated to each other by so that the pivoting drive in one direction of said first fin (12) also causes synchronized pivoting in the same direction of said second fin (9).
    公开号:FR3083164A1
    申请号:FR1855935
    申请日:2018-06-29
    公开日:2020-01-03
    发明作者:Christophe Dutot；Pascal Martin；Jacques Matusik；Philippe Barre；Jeremy Saussereau
    申请人:PSA Automobiles SA；
    IPC主号:
    专利说明:

    Title of invention
    Coanda effect aerator for motor vehicle
    Field of the invention
    The present invention relates generally to aerators intended to diffuse in the passenger compartment of a motor vehicle air coming from the heating, ventilation and air conditioning system of said vehicle.
    Invention background
    Such an aerator, known for example from French patent application FR 2 956 065, conventionally comprises at least one aerator comprising a channel delimited by a hollow body and capable of channeling a flow of air up to an outlet opening opening into the passenger compartment of the vehicle, as well as a series of parallel deflection fins rotatably mounted in this channel near the outlet opening. The aerator also includes an actuator mechanically connected to these fins and allowing the user to control its rotation in order to orient the air flow leaving the body.
    A concealment flap controllable by a dedicated control mechanism is also generally pivotally mounted in the duct upstream of these fins between a maximum open position and a closed position preventing the flow of ducted air from escaping to the through the outlet opening.
    These aerators which generally lead to the dashboard of the vehicle are unsightly and negatively impact the level of quality perceived by users.
    In order to overcome these drawbacks, American patent application 2014/0357179 proposes an aerator comprising:
    - A hollow body capable of channeling an air flow from an inlet opening to an outlet opening leading to an enclosure;
    - a hollow oval section air guide core rigidly housed in the hollow body and defining two air guide surfaces opposite one another, the two guide surfaces and the hollow body thus delimiting two flow channels able to transport respectively to the outlet opening a first and a second quantity of air coming from the inlet opening; and
    - a fin extending in said hollow body upstream of the guide core and pivotally mounted by its downstream end about a transverse axis so as to allow to adjust according to its position the ratio between the first and second quantities d 'air.
    Thus, according to the value of this ratio, the direction of the air flow leaving the aerator and perceived by the users will be modified. When the two quantities of air are identical, the outgoing air flow extends in a direction parallel to the axis of the duct.
    Such an aerator implements the physical phenomenon known as the "Coanda" effect according to which a guided flow by attaching to curved surfaces has a low pressure drop and thus generates little noise.
    It has the advantage of being particularly aesthetic (only the end of the core remaining visible to users while the other mechanical elements are concealed) which allows to significantly improve the level of perceived quality of all the vehicle dashboard.
    However, with this type of aerator, the outlet air section varies considerably depending on the position of the fin located upstream of the guide core.
    This section is thus twice smaller when this fin occupies its extreme low or high position than when it occupies its intermediate position, which results in a significantly higher speed of the air leaving the aerator generating turbulence, pressure drops and much higher operating noise (gain of around 7 to 8 dB).
    Subject and summary of the invention
    The present invention therefore aims to improve the situation.
    To this end, it offers an aerator for a motor vehicle comprising:
    - A hollow body capable of channeling an air flow from an inlet opening to an outlet opening leading to an enclosure;
    an air guide member extending in said hollow body and defining two air guide surfaces opposite one another, the two said guide surfaces and said hollow body thus delimiting two channels upper and lower flow able to transport respectively to said outlet opening a first and a second quantity of air from said inlet opening; and
    - A first fin extending in said hollow body upstream of said guide member and pivotally mounted by its downstream end about a transverse axis so as to allow to adjust according to its position the ratio between the first and second air quantities:
    characterized in that said guide member is constituted by a second fin pivotally mounted by its upstream end around said transverse axis, said first and second fins being articulated to one another by an articulation mechanism so that the drive pivoting in one direction of said first fin also causes synchronized pivoting in the same direction of said second fin.
    This synchronized pivoting in the same direction of the two fins makes it possible to adjust the dimensions of the two upper and lower flow channels as a function of the angular position of the first fin so as to limit the amplitude of variation of the aeraulic section at the outlet. of the aerator induced by the pivoting of this first fin.
    The speed of the air leaving the aerator therefore varies little whatever the vertical orientation of the air flow dictated by the position of this first fin, which limits the phenomena of turbulence and pressure drop and ensures a significantly reduced and homogeneous operating noise.
    According to preferred characteristics of said aerator according to the invention:
    - Said articulation mechanism comprises two rods, the first ends of which are each articulated in rotation about a respective transverse axis on a said corresponding fin, while their second ends are articulated in rotation with one another around a transverse shaft mounted with vertical sliding;
    - The link articulated to said second fin has a length greater than that of the link articulated to said first fin, so that this second fin has an angular clearance less than that of said first fin during the vertical sliding of said shaft;
    - Said first fin is able to be moved between an extreme low position in which said lower flow channel is closed so that all of said air flow circulates in said upper flow channel, and a second extreme high position wherein said upper flow channel is closed so that all of said air flow flows through said lower flow channel;
    the length ratio between the two said links is determined so that the upper guide surface of the second fin is substantially parallel to the wall of the hollow body located opposite the latter when said first fin occupies its extreme low position, and so that the lower guide surface of this second fin is substantially parallel to the wall of the hollow body located opposite the latter when said first fin occupies its extreme upper position;
    - Said second guide fin has a symmetrical biconvex longitudinal profile with a downstream tip end;
    - Said transverse pivot axis of said first and second fins extends in the median horizontal plane of said body;
    - Said aerator comprises a row of parallel vertical deflection fins pivotally mounted around vertical axes in said body upstream of said first and second fins, and being rotationally integral by means of a connecting member connecting them together ; and or
    - Said aerator has two lateral recesses formed on either side of said body at the junction zone of the portions of this body respectively hosting said vertical fins and said first fin.
    The invention also relates in a second aspect, to a motor vehicle comprising at least one such aerator.
    Brief description of the drawings
    The description of the invention will now be continued with the detailed description of an exemplary embodiment, given below by way of illustration but not limitation, with reference to the appended drawings, in which:
    - Figure 1 shows a schematic view in axial vertical section of an aerator according to the invention in which the first and second fins occupy their extreme low position;
    - Figure 2 is a view similar to Figure 1 but in which the first and second fins occupy their intermediate position;
    - Figure 3 shows a partial schematic view in top section of the ventilation device according to the invention; and
    - Figure 4 is a partial perspective view of the ventilation device according to the invention showing the articulation mechanism of the first and second fins.
    Detailed description of a preferred embodiment
    The ventilation device 1 shown in the figures is intended to be installed on the dashboard (not shown) of a vehicle in order to diffuse into the passenger compartment of this vehicle the forced air coming from a ventilation system and / or air conditioning.
    As illustrated in FIGS. 1 and 2, the aerator 1 comprises a hollow body 2 capable of channeling an air flow F from an inlet opening 3 to an outlet opening 4 opening into the passenger compartment of the vehicle.
    In the rest of this description, the terms “upstream” and “downstream” used to characterize the position of certain elements of the aerator 1 are to be considered with respect to the direction of circulation of the air flow F in the hollow body 2.
    The hollow body 2 is successively formed, from the inlet opening 3 towards the outlet opening 4, by a first section 5 having a constant rectangular section, a second section 6 also having a constant rectangular section of dimension slightly smaller than that of the first section 5 and connected to the latter by a rectangular annular recess 7, as well as a third section 8 having a symmetrical biconvex longitudinal profile.
    This third section 8 is composed of an upstream portion 8A having a vertical longitudinal section flaring in the direction of circulation of the air flow F, and a downstream portion 8B having a vertical longitudinal section narrowing in this same direction air flow circulation F.
    The aerator 1 also includes an air guide fin 9 extending in the downstream portion 8B of the third section 8 of the hollow body 2 and being pivotally mounted by its upstream end around a transverse horizontal axis A, extending in the median horizontal plane of the body 2 (that is to say equidistant from the upper and lower walls of the third section 8) and being arranged longitudinally at the vertical plane of separation S between the upstream 8A and downstream 8B portions of this third section 8.
    With a downstream tip end, the guide fin 9 has a symmetrical biconvex longitudinal profile defining two upper air guide surfaces 9A and lower 9B opposite each other.
    The upper and lower walls of the downstream portions 8B of the third section 8, situated respectively opposite the upper 9A and lower 9B guide surfaces of the fin 9, thus define with the latter two upper 10 and lower 11 flow channels.
    These channels 10 and 11 are capable of transporting, respectively to the outlet opening 4, a first and a second quantity of air coming from the inlet opening 3.
    Thus, by varying the inclination of the guide fin 9, it is therefore possible to adjust the ratio between these first and second quantities of air.
    The aerator 1 also includes an air guide fin 12 extending in the upstream portion 8A of the third section 8 of the hollow body 2.
    This fin 12 being pivotally mounted by its downstream end around the same transverse horizontal axis A between an extreme low position in which the lower flow channel 11 is closed (configuration of FIG. 1) so that all of said air flow F flows in said upper flow channel 10, and an extreme high position in which the upper flow channel 10 is closed so that all of said air flow F flows in said lower flow channel 11.
    The two fins 9 and 12 are also articulated to each other by means of an articulation mechanism implanted outside the body 2 and comprising two links 13, 14.
    The first ends of the rods 12, 13 are each articulated in rotation about a respective transverse axis B, C on a corresponding fin 9, 12, while their second ends are articulated in rotation with one another around a transverse horizontal shaft 15 connected to a control member not shown and mounted to slide vertically in the vertical plane of separation S between the upstream 8A and downstream 8B portions of this third section 8.
    To do this and as illustrated in FIG. 4, the shaft 15 is rigidly connected to a slide 16 mounted to slide inside and along a vertically oriented guide housing 17.
    Thus, the sliding of this shaft 15 in one direction causes the synchronized pivoting in the same direction of the two fins 9 and
    12, which makes it possible to adjust the dimensions of the two upper 10 and lower 11 flow channels as a function of the angular position of the fin 12 so as to limit the amplitude of variation of the aeraulic section at the outlet of the aerator 1 induced by this pivoting of the fin 12.
    The speed of the air leaving the aerator 1 therefore varies little whatever the vertical orientation of the air flow dictated by the position of this fin 12, which limits the phenomena of turbulence and pressure drop and ensures a substantially reduced and homogeneous operating noise.
    As illustrated in FIG. 1, the two links 13, 14 are arranged so that the latter and the two fins 9, 12 are aligned in the median horizontal plane of the body 2 when the transverse shaft 15 is situated at the level of this median horizontal plane (this shaft 15 then being aligned with the transverse axis A).
    Furthermore, the connecting rod 3 hinged to the fin 9 has a length greater than that of the connecting rod 14 hinged to the fin 12, so that this fin 9 has an angular clearance less than that of the fin 12 during vertical sliding from the tree 15.
    Advantageously, the length ratio between the two links 13, 14 is determined so that the upper guide surface 9A of the fin 9 is substantially parallel to the wall of the hollow body 2 located opposite the latter (ie: 1a upper wall of the downstream portion 8B of the third section 8) when the fin 12 occupies its extreme low position (Figure 1), and so that the lower guide surface 9B of this fin 9 is substantially parallel to the wall of the body hollow 2 located opposite the latter (ie: the lower wall of the downstream portion 8B of the third section 8) when the fin 12 occupies its extreme high position.
    By “appreciably”, it should be understood that a slight deviation of the order of 10 ° will be allowed with respect to a strictly parallel orientation while remaining included in the context of the invention.
    The variation in the inclination of the two guide fins 9 and 12 makes it possible to adjust the ratio between the first and second quantities of air as well as the direction of exit of the air flow F relative to the horizontal.
    When the fin 12 occupies its extreme high position, the upper flow channel 10 is closed. The entire air flow F then flows through the lower flow channel 11 and leaves the outlet opening 4, being directed upwards.
    Conversely, when the fin 12 occupies its extreme low position illustrated in FIG. 1, the lower flow channel 11 is closed. The entire air flow F then circulates in the upper flow channel 10 and leaves the outlet opening 4, being directed downwards.
    When the fin 12 extends horizontally in a position situated halfway between these two extreme high and extreme low positions, the same quantity of air circulates in the two upper 8 and lower 9 flow channels so that at the outlet, the air flow F is directed substantially horizontally.
    The aerator 1 further comprises a row of parallel vertical deflection fins 18 pivotally mounted in the first and second sections 5, 6 of the body 2 along vertical axes E, and being integral in rotation by means of a rod 19 connecting them together (see Figure 4).
    The variation in the inclination of these fins 18 thus makes it possible to adjust the direction of exit of the air flow F relative to the median vertical plane of the hollow body 2.
    As can be seen in FIG. 3, the third section 8 of the hollow body 2 has a frustoconical horizontal section which widens in the direction of circulation of the air flow F so that its side walls disturb the air circulation as little as possible. when these vertical fins 18 are inclined.
    Advantageously, the inclination of its first side wall 8A with respect to the vertical median plane of the body 2 will be determined so as to correspond to the maximum inclination in one direction of the vertical fins 18, while the inclination of the second side wall opposite this same vertical median plane will correspond to the maximum inclination in the other direction of these vertical fins 18.
    The pivoting movement of the fins 18 is provided in a conventional manner by means of a control mechanism controlled by a single actuator, not shown, which can be translated horizontally along a horizontal transverse axis.
    As also illustrated in FIG. 3, a respective lateral step 20 is provided on either side of the body 2 at the junction between the second section 6 and the third section 8.
    The presence of these two recesses 16 makes it possible to prevent part of the air flow F from infiltrating into the lateral interstices separating the lateral ends of the fins 9, 18 and the side walls of the third section 7, so as to avoid the appearance of parasitic operating noises under the effect of turbulence generated by these infiltrations.
    According to variant embodiments not shown, the articulation mechanism is different from that described above (for example, of the gear train type).
    According to other alternative embodiments, not shown, the vertical fins can pivot over an angular range of approximately 180 ° so that they also constitute concealing means capable of completely closing off the hollow body so as to prevent the flow of air escaping through the outlet opening.
    According to yet other alternative embodiments not shown, the aerator comprises a specific concealment flap formed upstream of the vertical fins to close off the hollow body.
    Of course, the present invention is not limited to the embodiments described and shown, but also encompasses all the variant embodiments within the reach of the skilled person.
    It will be noted in particular that the aerator can also be installed in different places of a motor vehicle such as the roof or roof light, a central console arranged between two seats, a central leg separating two lateral openings.
    The invention is also not limited to the automotive field: the diffusion device can for example be installed in a partition or a false ceiling of a building.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Aerator for a motor vehicle comprising:
    - a hollow body (2) capable of channeling an air flow (F) from an inlet opening (3) to an outlet opening (4) opening onto an enclosure;
    - an air guide member (9) extending in said hollow body (2) and defining two air guide surfaces (9A, 9B) opposite each other, the two said guide surfaces (9A, 9B) and said hollow body (2) thus delimiting two upper (10) and lower (11) flow channels suitable for transporting first and second quantities of said outlet opening (4) respectively air from said inlet opening (3); and
    - a first fin (12) extending in said hollow body (2) upstream of said guide member (9) and pivotally mounted by its downstream end around a transverse axis (A) so as to allow adjustment depending on its position the ratio between the first and second quantities of air:
    characterized in that said guide member is constituted by a second fin (9) pivotally mounted by its upstream end around said transverse axis (A), said first and second fins (12, 9) being articulated to each other by an articulation mechanism so that the pivoting drive in one direction of said first fin (12) also causes synchronized pivoting in the same direction of said second fin (9).
    [2" id="c-fr-0002]
    2. Aerator according to claim 1, characterized in that said articulation mechanism comprises two rods (13, 14), the first ends of which are each articulated in rotation about a respective transverse axis (C, D) on a said fin corresponding, while their second ends are articulated in rotation to each other around a transverse shaft (15) mounted for vertical sliding.
    [3" id="c-fr-0003]
    3. Aerator according to claim 2, characterized in that the link (13) articulated to said second fin (9) has a length greater than that of the link (14) articulated to said first fin (12), so that this second fin (9) has an angular displacement less than that of said first fin (12) during the vertical sliding of said shaft (15).
    [4" id="c-fr-0004]
    4. Aerator according to one of claims 1 to 3, characterized in that said first fin (12) is adapted to be moved between an extreme low position in which said lower flow channel (11) is closed so that the all of said air flow (F) flows through said upper flow channel (10), and a second extreme high position where said upper flow channel (10) is closed so that all of said air flow (F) flows through said lower flow channel (11).
    [5" id="c-fr-0005]
    5. Aerator according to claims 3 and 4, characterized in that the length ratio between the two said rods (13, 14) is determined so that the upper guide surface (9A) of the second fin (9) is substantially parallel to the wall of the hollow body (2) located opposite the latter when said first fin (12) occupies its extreme low position, and so that the lower guide surface (9B) of this second fin (9) is substantially parallel to the wall of the hollow body (2) located opposite the latter when said first fin (12) occupies its extreme high position.
    [6" id="c-fr-0006]
    6. Aerator according to one of claims 1 to 5, characterized in that said second guide fin (9) has a symmetrical biconvex longitudinal profile with a downstream end at a point.
    [7" id="c-fr-0007]
    7. Aerator according to one of claims 1 to 6, characterized in that said transverse pivot axis (A) of said first and second fins (12, 9) extends in the horizontal median plane of said body (2).
    [8" id="c-fr-0008]
    8. Aerator according to one of claims 1 to 7, characterized in that it comprises a row of parallel vertical deflection fins (18) pivotally mounted around vertical axes (E) in said body (2) upstream said first and second fins (12, 9), and being integral in rotation by means of a connecting member (19) connecting them together.
    [9" id="c-fr-0009]
    9. Aerator according to one of claims 1 to 8, characterized in
    5 which it comprises two lateral recesses (20) formed on either side of said body (2) at the junction zone of the portions of this body respectively accommodating said vertical fins (18) and said first fin (12 ).
    [10" id="c-fr-0010]
    10. Motor vehicle comprising at least one aerator according to one of claims 1 to 9.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3083164B1|2020-11-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS62228833A|1985-12-12|1987-10-07|Kojima Press Co Ltd|Air-conditioning register|
    JP2017013783A|2015-06-29|2017-01-19|ダイキョーニシカワ株式会社|Wind direction adjustment device for vehicle|
    DE102015017009A1|2015-12-30|2017-07-06|Faurecia Innenraum Systeme Gmbh|outlet device|EP3895922A1|2020-04-16|2021-10-20|PSA Automobiles SA|Air distribution air vent for vehicle dashboard|
    FR3111688A1|2020-06-22|2021-12-24|Psa Automobiles Sa|COMPACT AERATOR WITH LARGE AERAULIC OUTLET SECTION, AND ASSOCIATED VEHICLE|
    法律状态:
    2019-05-21| PLFP| Fee payment|Year of fee payment: 2 |
    2020-01-03| PLSC| Search report ready|Effective date: 20200103 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 3 |
    2021-05-19| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1855935|2018-06-29|
    FR1855935A|FR3083164B1|2018-06-29|2018-06-29|COANDA-EFFECT AERATOR FOR MOTOR VEHICLES|FR1855935A| FR3083164B1|2018-06-29|2018-06-29|COANDA-EFFECT AERATOR FOR MOTOR VEHICLES|
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