• 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 invention relates to a device (1) for controlling an air flow for an air intake of a motor vehicle, comprising a sheath (2) defining a flow channel (4) in which a air flow, in which is arranged a cooling unit (6) comprising at least one heat exchanger (8, 10) and a motor-fan unit (12), characterized in that the regulating device (1) comprises a flap (34) arranged in the flow channel (4) downstream of the cooling unit (6) with respect to the flow of the air flow. The invention also relates to a motor vehicle comprising such a regulating device (1).
    公开号:FR3068305A1
    申请号:FR1756197
    申请日:2017-06-30
    公开日:2019-01-04
    发明作者:Jean-Paul Herlem；Stephan Andre；Emmanuel Henon
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    The subject of the invention is a device for regulating an air flow for an air intake of a motor vehicle and more precisely as well as a motor vehicle, and in particular an electric motor vehicle comprising such a regulating device. air inlet.
    In general, 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 allow 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 which enters the engine compartment of the motor vehicle is guided to the cooling system of said motor vehicle to allow heat exchange between the incoming air and the heat exchanger of the cooling system. It is important to minimize the loss 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 coefficient of air resistance of said motor vehicle.
    It is known to use air guides which are in the form of a sheath generally made of plastic or other flexible material connecting the air inlet to the cooling system.
    In the case of an electric vehicle, the air intake control device may comprise 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 can prove to be advantageous for generating a venturi effect downstream of the cooling unit so that a greater flow of air can pass through the cooling system thus improving the thermal efficiency.
    However, such a conduit has certain drawbacks. Indeed, when an electric vehicle is stopped and connected to a station, or electric terminal, in order to recharge the battery, the motor-driven fan group of the cooling system is activated to ensure cooling of the battery and prevent it from overheating. However, such operation generates noise pollution for the user.
    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, comprising a sheath defining a flow channel through which flows a flow of air, in which is arranged a cooling unit comprising at least one heat exchanger and a fan unit. According to the invention, the regulating device comprises a flap arranged within the flow channel downstream of the cooling unit with respect to the flow of the air flow.
    The flap is used to close the flow channel and in particular the duct leading the air flow towards the outside of the vehicle. The noise thus generated during recharging of the battery is contained inside the vehicle and can no longer be perceived outside the vehicle.
    Other embodiments of the air inlet regulation device taken individually or in combination propose that:
    - the shutter is of the drum or sliding type;
    - The flow channel comprises an inlet and an outlet, said outlet being composed of at least two separate conduits, the shutter being capable of closing each of said conduits;
    a shutter device comprising a set of shutter flaps capable of pivoting in rotation so as to vary the air flow rate, is arranged in the flow channel upstream of the cooling unit with respect to the flow of the air flow;
    - the cooling unit is inclined relative to the shutter device;
    - vanes are arranged upstream and / or downstream of the cooling unit with respect to the flow of the air flow;
    - the blades extend from the shutter device to the cooling unit;
    - the flow section of the flow channel increases from the inlet to the cooling unit and narrows from the cooling unit to the outlet.
    The invention also relates to a vehicle comprising such a device for regulating an air flow for an air inlet according to the invention.
    Other embodiments of the vehicle taken in isolation or in combination propose that:
    the vehicle comprises an air inlet, optionally provided with a grille, the outlet of the flow channel comprises a cleaning duct arranged to conduct the air flow towards the outside of the vehicle and a cooling duct arranged to direct the air flow to 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.
    Other characteristics and advantages of the invention will appear on reading the description which follows. This is purely illustrative and should be read in conjunction with the accompanying drawings in which:
    FIG. 1 illustrates a device for regulating an air flow according to the invention according to a profile view,
    FIG. 2 illustrates a section of the device for regulating an air flow in FIG. 1 according to a profile view,
    FIG. 3 illustrates a part of the device for regulating an air flow according to a perspective view,
    - Figure 4 schematically illustrates a vehicle according to the invention in a side view.
    FIG. 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 shown by the axes in FIGS. 1, 2 and 4.
    The device 1 for regulating an air flow according to the invention comprises a sheath 2 corresponding to an envelope, or even a housing, thus defining a flow channel 4 with an inlet 20 and an outlet 22 in which s flows an air flow. The sheath 2 is made of flexible material in order to absorb the vibrations of the vehicle when it is traveling, and in a sufficiently strong material in order to carry elements such as heat exchangers, certain plastics, for example polypropylene or polyamide-6. lend themselves to such use.
    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 heat exchange between the air flow and the fluid circulating within the heat exchanger. As illustrated in FIG. 2, the cooling unit 6 here comprises first and second heat exchangers 8, 10. The first heat exchanger 8 corresponds for example to a condenser while the second heat exchanger 10 corresponds to example to a radiator. The cooling unit 6 also comprises a 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 at a standstill.
    The device 1 for regulating an air flow according to the invention further comprises a shutter device 14 comprising a set of shutter flaps 18 able to pivot in rotation so as to vary the flow rate of the air, said closure device 14 is arranged in the flow channel 4 upstream of the cooling unit 6 with respect to the flow of the air flow. The shutter device 14 further comprises a support frame 16 having bearings so as to carry the shutter flaps 18.
    Each shutter 18 comprises an axis of rotation materialized by a pin which is inserted in the bearings of the support frame 16. The axes of rotation allow the shutters 18 to pass from an opening configuration to a configuration closing. The opening configuration, or in other words opening a shutter 18, amounts to placing (by rotation) the shutter 18 so that they oppose the flow of air as little as possible. while orienting it appropriately. As illustrated in FIG. 2, in the opening configuration, the shutter flaps 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 cleared. The closing configuration, or in other words closing a shutter 18, amounts to placing the shutters 18 so that they oppose the flow of air by their front surface as much as possible. F, in cooperation with the other shutter flaps 18. In this configuration, the shutter flaps 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 able to adopt any intermediate position between these two configurations.
    The sheath 2 as illustrated in FIG. 1, is produced in two parts, a first part 2a connecting the inlet of the sheath 2, and therefore the inlet 20 of the flow channel 4, where the shutter device 14 is arranged. , to the cooling unit 6 and a second part 2b connecting the cooling unit 6 to the outlet of the sheath 2 and therefore to the outlet 22 of the flow channel 4. The parts 2a, 2b of the sheath include fixing means such as clips, screws, tapped holes, etc. of complementary shapes to the fixing means arranged on the cooling unit 6. The parts 2a, 2b can also comprise means of fixing of complementary shapes so that each part 2a, 2b can be fixed one to the other. It is also possible to have a sheath 2 in a single piece forming a continuity of material between the inlet 20 and the outlet 22 of the flow channel 4.
    The flow channel 4 comprises an inlet 20 and an outlet 22 the latter is composed of at least two separate conduits, the flap which will be described later being capable of closing each of said conduits. The outlet 22 of the flow channel 4 comprises a cleaning 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 FIG. 3, the cooling duct 26 here corresponds to a channel where an opening 28 provided with a grid 30 is produced within a wall of the sheath 2 thus allowing the air flow to flow from the flow channel 4 to the engine compartment. The cleaning duct 24 here corresponds to a channel where an opening 32 is made within a wall of the sheath 2 thus allowing the air flow to flow from the flow channel 4 towards the outside of the vehicle.
    The device 1 for regulating an air flow according to the invention further comprises a flap 34 arranged within the flow channel 4 downstream of the cooling unit 6 with respect to the flow of the flow d 'air. The flap 34 is of the drum type as illustrated in FIG. 2 because, since such a regulating device extends over a large part of the width of the vehicle (Y-axis), thus reaching more than one meter, the drum shutter, by its structure which has better mechanical strength, is better suited for such use. Other shutters can 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 a 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.
    The drum flap 34 comprises a rotation axis 36 in the form of a shaft allowing the flap 34 to pivot. The drum flap 34 further comprises three solid walls. Two side walls 38 arranged at the two opposite ends of the axis of rotation 36, these two side walls 38 are parallel and fall in a plane defined by the axes XZ perpendicular to the axis of rotation 36, and a transverse wall 40 connecting the side walls to each other. The transverse wall 40 is part of a plane defined by the axes XZ of curved shape allows the flow or the drying up of the air flow in an outlet duct 24, 26 22 of the flow channel 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 in FIG. 2.
    The transverse wall 40 of the drum shutter 34 is able to close the stripping duct 24 as illustrated in FIG. 2. The transverse wall 40 of the drum shutter 34 is also able to close the cooling duct 26 according to an embodiment not illustrated.
    The different walls of the flap 34 conform to the shape of the walls of the sheath 2 so as to ensure good sealing, the flap 34 can also further comprise lips 42 of elastomer overmolded at the ends of the walls. Thus the wall of the sheath 2 where the cooling channel 26 is arranged is of substantially rounded shape, so that the transverse wall 40 of curved shape of the flap 34 can completely seal this outlet duct.
    When the vehicle is running, the flap 34 is arranged so as to close off 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 shutter 34 is arranged so as to close off the cleaning duct 24 cooling duct 26, the air flow therefore passing through the cooling duct 26 as illustrated in FIG. 2. The shutter 34 is able to adopt any intermediate position.
    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 of the closure device 14 form a different angle. 0 ° (not zero), in particular an angle between 10 and 80 °, more precisely between 30 ° and 60 °. Such an arrangement makes it possible to reduce the steric bulk of the regulating device 1.
    Still according to the invention, it may prove advantageous for the blades 44 to be arranged upstream and / or downstream of the cooling unit 6 with respect to the flow of the air flow. The blades 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 (FIG. 2) over the entire surface of the heat exchangers 8, 10 of the cooling unit 6, this results in better thermal efficiency.
    In order to improve this thermal efficiency, it turns out to be beneficial for the blades to extend from the shutter device 14 to the cooling unit.
    6. The vanes 44 can, for example, extend the continuity of the shutter flaps 18 of the shutter device 14 when they are in the open configuration. The blades 44 may also have a general S shape with a leading edge corresponding to one end of the blade extending in a horizontal plane defined by the axes X and Y, a trailing edge substantially parallel to the edge of attack 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 blades 44 as long as they serve as a guide for the air flow, the blades 44 can for example be in the form of a quarter of a circle.
    The first plane end portion of the blade 44 intended to be traversed by the air flow F1 corresponds to the leading edge and is planar. The second and last end plane part intended to be crossed by the air flow F1 corresponds to the trailing edge is also plane. The inclined section is not part of the leading and trailing edges.
    The vanes 44 extend between the shutter device 14 up to 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 vanes 44 are arranged in the respective vicinity of the shutter device 14 and of the cooling unit 6, without however being in abutment against these elements.
    Still according to the invention, the passage section of the flow channel 4 increases from the inlet 20 of the flow channel 4 to the cooling unit 6 and shrinks from the cooling unit 6 to at the outlet 22 of the flow channel 4 in the direction of flow of the air flow. In other words, the passage section of the flow channel 4 has at least one dimension (width and / or height) which increases as the length, or as we get closer to the 'cooling unit 6 starting from the inlet 20, according to the direction of flow of the air flow. Similarly, the passage section of the flow channel 4 has at least one dimension (width and / or height) which decreases as the length, or as one moves away of the cooling unit 6 while approaching the outlet 22, according to the direction of flow of the air flow.
    Still according to the invention, sound absorption parts can be arranged within the sheath 2 thus ensuring an acoustic insulating coating of the flow channel 4 by suppressing or limiting the propagation of noise towards the outside. The sound absorption part may 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.
    FIG. 4 illustrates a vertical section of a motor vehicle in a longitudinal direction of the vehicle. The vehicle includes a bumper beam 50 below which a grille 52 or grid is placed. This grille 52 is fixed and remains in the open position to allow an incoming air flow to pass. The vehicle according to the invention comprises a device 1 for regulating air intake as described above.
    The motor vehicle according to the invention therefore comprises an air inlet 54 provided with a grille 52 and a device 1 for regulating this air inlet. The outlet 22 of the flow channel 4 comprises a cleaning 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 56 of the vehicle .
    The vehicle according to the invention further comprises an additional inlet 58 as well as an additional duct 60 connecting said additional inlet 58 with the cleaning duct 24 leading the air flow towards the exterior of the vehicle.
    This makes it possible to accentuate the venturi effect of the cleaning duct 24 thus increasing the flow of circulating air thus improving the thermal efficiency. The additional input 58 can also be fitted with a grid 5 in order to prevent any foreign body (branches, leaves, etc.) from entering the additional conduit 60.
    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 only by way of example. It encompasses various modifications, alternative forms and other variants that a person skilled in the art may envisage within the framework of the present invention and in particular any combination of the various embodiments described above.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Device for regulating (1) an air flow for an air intake of a motor vehicle, comprising a sheath (2) defining a flow channel (4) through which a flow of air, in which is arranged a cooling unit (6) comprising at least one heat exchanger (8,10) and a motor-fan unit (12), characterized in that the regulating device (1) comprises a shutter ( 34) arranged within the flow channel (4) downstream of the cooling unit (6) with respect to the flow of the air flow.
    [2" id="c-fr-0002]
    2. Regulating device (1) according to claim 1, in which the flap (34) is of the drum or sliding type.
    [3" id="c-fr-0003]
    3. Regulating device (1) according to one of claims 1 or 2, wherein the flow channel (4) comprises an inlet (20) and an outlet (22), said outlet (22) being composed of '' at least two separate conduits (24,26), the flap (34) being able to close each of said conduits (24,26).
    [4" id="c-fr-0004]
    4. Regulating device (1) according to one of the preceding claims, in which a shutter device (14) comprising a set of shutter flaps (18) able to pivot in rotation so as to vary the flow rate of air flow, is arranged in the flow channel (4) upstream of the cooling unit (6) relative to the flow of the air flow.
    [5" id="c-fr-0005]
    5. Regulating device (1) according to claim 4, wherein the cooling unit (6) is inclined relative to the shutter device (14).
    [6" id="c-fr-0006]
    6. Regulating device (1) according to one of the preceding claims, in which blades (44) are arranged upstream and / or downstream of the cooling unit (6) with respect to the flow of the flow d 'air.
    [7" id="c-fr-0007]
    7. Regulating device (1) according to claim 6 taken in combination with claim 4, wherein the blades (44) extend from the shutter device (14) to the cooling unit (6).
    [8" id="c-fr-0008]
    8. Regulating device (1) according to one of the preceding claims, in which the passage section of the flow channel (4) is enlarged from the inlet (20) to the cooling unit (6 ) and shrinks from the cooling unit (6) to the outlet (22).
    [9" id="c-fr-0009]
    9. Motor vehicle comprising an air inlet (54) and a regulating device (1) for said air inlet (54) according to one of claims 3 to 8, characterized in that the outlet (22) of the flow channel (4) comprises a cleaning 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 ( 56) of the vehicle.
    [10" id="c-fr-0010]
    10. Motor vehicle according to claim 9, further comprising an additional air inlet (58), and in which an additional duct (60) connects said additional inlet (58) to the cleaning duct (24).
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2019002287A1|2019-01-03|
    EP3621840A1|2020-03-18|
    FR3068305B1|2020-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2788019A1|1998-12-30|2000-07-07|Valeo Climatisation|Air distributor for heater in vehicle passenger compartment comprises mixing chamber and three outlets controlled by two distribution flaps shaped as drums pivoting on single axis|
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    US20120292122A1|2011-05-17|2012-11-22|GM Global Technology Operations LLC|Control of an airstream flow rate through a covered compartment by an adjustable shutter|
    US20140251241A1|2011-10-12|2014-09-11|Toyota Jidosha Kabushiki Kaisha|Vehicle front portion structure|
    EP2942220A1|2014-05-07|2015-11-11|Audi Ag|Vehicle with a front-installed air duct and method for controlling an air flow, in particular a cold air flow|
    FR3097943B1|2019-06-25|2021-09-24|Valeo Systemes Thermiques|Device for regulating an air flow for a motor vehicle air inlet|
    FR3097906B1|2019-06-26|2021-06-04|Valeo Systemes Thermiques|Device for regulating an air flow for an air inlet of a motor vehicle|
    FR3100483A1|2019-09-10|2021-03-12|Valeo Systemes Thermiques|TANGENTIAL TURBOMACHINE MOTOR VEHICLE COOLING MODULE|
    法律状态:
    2019-01-04| PLSC| Search report ready|Effective date: 20190104 |
    2019-06-28| PLFP| Fee payment|Year of fee payment: 3 |
    2020-06-30| PLFP| Fee payment|Year of fee payment: 4 |
    2021-06-30| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1756197|2017-06-30|
    FR1756197A|FR3068305B1|2017-06-30|2017-06-30|DEVICE FOR REGULATING AN AIR FLOW FOR AN AIR INTAKE OF A MOTOR VEHICLE|FR1756197A| FR3068305B1|2017-06-30|2017-06-30|DEVICE FOR REGULATING AN AIR FLOW FOR AN AIR INTAKE OF A MOTOR VEHICLE|
    EP18737829.4A| EP3621840A1|2017-06-30|2018-06-26|Device for regulating an air stream for an air inlet of a motor vehicle|
    PCT/EP2018/067101| WO2019002287A1|2017-06-30|2018-06-26|Device for regulating an air stream for an air inlet of a motor vehicle|
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