FR3034050A1 - AERATION NOZZLE WITH HOMOGENEOUS AIR EXIT - Google Patents

Abstract

The invention relates to a ventilation nozzle for vehicles comprising at least one body (2) having a circulation channel (3) extending between two main walls said front and rear and between two side walls said left (9) and right (10). According to the invention, the nozzle comprises from a side wall (9, 10), a first series (S1) of fins (13) each having a curved profile whose concavity is turned towards said side wall, the radius of curvature of the fins of this first series (S1) progressively as the wings are moved away from said side wall in order to homogenize the flow of outgoing air.

Description

The present invention relates to the technical field of the air outlet devices of a ventilation system of the passenger compartment of a motor vehicle. In general, the ventilation system of the passenger compartment of a vehicle conventionally opens into at least one orifice provided in the dashboard of the vehicle. An air outlet device usually called aeration nozzle or aerator closes the orifice and allows to control the direction of the air flow leaving the ventilation system. The state of the art could lead to many solutions for producing aeration nozzles. Such an air outlet device comprises, for example, according to patent FR 2 457 190, a first set of fins adjustable in inclination with respect to the horizontal and a second set of fins adjustable in the direction around axes. vertical, with the games being rotatably mounted and extending in front of each other across the downstream end portion of an air line connecting the aeration system to the air outlet port. The rotation of the adjustable fins in inclination allows to direct the flow of air upwards or downwards and the rotation of the fins adjustable in direction can direct the flow of air to the right or left. EP 0 782 939 discloses a venting nozzle comprising a pivotally mounted cylinder provided with lamellae extending obliquely with respect to the pivot axis. This aeration nozzle also comprises a set of pivotally mounted slats to change the direction of the air flow. If such air outlet devices are adapted to direct the flow of air from left to right as well as from top to bottom, it has been found that the outgoing air flow is not evenly distributed. . In addition to the problem of discomfort that results from localized variations in temperature, the inhomogeneous distribution of the air flow does not allow to obtain a defrost or a uniform demister. The present invention aims at remedying the drawbacks of the solutions of the prior art by proposing a new ventilation nozzle for vehicles making it possible to homogeneously distribute the flow of outgoing air. To achieve such an objective, the ventilation nozzle for vehicles according to the invention consists of a ventilation nozzle for vehicles comprising at least one body having a circulation channel for the air opening on one side of the body, according to the invention. an air intake face and on an opposite side of the body, according to an air outlet face, the circulation channel extending in a first direction between two main walls said front and rear and in a transverse direction, between two said left and right side walls, a series of air bypass fins being positioned in the circulation channel extending from one main wall to the other.

According to the invention, the nozzle comprises from a side wall, a first series of fins each having a curved profile whose concavity is turned towards said side wall, the radius of curvature of the fins of this first series progressing to as the fins move away from said side wall to homogenize the outgoing air flow. Such an arrangement of the fins of the first series makes it possible to homogeneously distribute the outgoing air flow over an angular range of approximately 90 °, that is to say either to the right or to the left. According to an advantageous characteristic of embodiment, the aeration nozzle comprises a second series of fins for homogenizing the outgoing air flow, each having a curved profile whose concavity is rotated in a direction opposite to that of the fins of the first series , the radius of curvature of the fins of this second series progressing as and approximation of said fins of a median plane between the first and second series of fins. According to this variant embodiment, the arrangement of the fins of the first series and of the second series makes it possible to homogeneously distribute the outgoing air flow over an angular range of approximately 180 °, that is to say from right to left. left. Advantageously, the fins of the first and second series occupy symmetrical positions with respect to their median plane. According to an advantageous variant of embodiment, the ventilation nozzle comprises a third series of fins comprising at least one straight blade 3034050 3, occupying a position close to the fin of the first and / or second series, presenting the most large radius of curvature. According to a first embodiment, the fins of the first, second and third series are positioned in a common air circulation channel arranged in a single body. According to a second embodiment, the fins of the first and second series are positioned in separate channels of air circulation, arranged in two different bodies, each of these bodies being equipped with the fins of the third series.

According to an alternative embodiment, each fin support body forms a rotating cylinder equipped with a rotation axis supported by a housing so that the upstream and downstream end portions of the fins pivot in transverse planes which are perpendicular to the air intake face, this housing having an air supply opening 15 communicating with the air inlet face of the body and an exit window in which can open the air outlet face of the body in the open position of said nozzle. According to this variant embodiment, the outgoing air flow can be directed upwards or downwards or backwards. The ventilation nozzle according to the invention also comprises in combination one and / or the other of the following additional characteristics: each fin of the first and second series comprises an upstream end portion whose tangent plane located at the the air inlet face forms an angle of between 80 ° and 90 ° with respect to said air inlet face; The distance between the upstream end portions of two neighboring fins belonging to the first series and / or second series and / or the fin of the third series with the fin next to the first or second series, is identical ; each fin has a downstream end portion situated at the level of the air outlet and in that the distance between the downstream end portions of two neighboring fins belonging to the first series 3034050 and / or second series and / or the fin of the third series with the vane next to the first or second series, is identical; the downstream end portions of the fins of the first series and of the second series, respectively, have, at the air outlet face, tangent planes whose orientation evolves in a progressive step in the respectively opposite direction of said side wall and median plane; the downstream end portions of the fins respectively of the first and third series and of the second and third series have, at the level of the air outlet face, tangent planes whose orientation evolves in a progressive step in the opposite direction respectively said side wall and the median plane; the circulation channel has a polygonal, oblong or circular cross section; Each fin support body forms a rotating cylinder equipped with a rotation axis supported by a housing so that the upstream and downstream end portions of the fins pivot in transverse planes which are perpendicular to the inlet face; of air, this housing having an air supply opening communicating with the air intake face 20 of the body and an exit window in which can open the air outlet face of the body in the position of opening of said nozzle; each rotating cylinder is equipped, from its main faces, with shutter skirts which partially or completely close off the outlet window of the housing as a function of the angular position of the cylinder; each body is provided with a rotational control member; - Between two rotating bodies mounted side by side is mounted an angular assembly member. Various other features appear from the description given below with reference to the accompanying drawings which show, by way of non-limiting examples, embodiments of the subject of the invention.

FIG. 1 is a perspective view illustrating an aerating nozzle according to the invention made according to a first embodiment. Figure 2 is a top view of the vent nozzle shown in FIG. 1 ..

Figure 3 is an elevational sectional view of the vent nozzle taken along lines A-A of FIG. 2. Figure 4 is a top view of a ventilation nozzle according to the invention made according to a second embodiment. Figure 4B is an elevational sectional view of the vent nozzle taken along lines B-B of FIG. 4. Figure 4C is an elevational sectional view of the vent nozzle taken along lines C-C of FIG. 4. Figure 5 is a top view of a ventilation nozzle according to the invention, shown in a semi-closed position.

Figure 5A is an elevational sectional view of the vent nozzle taken along lines A-A of FIG. 5. Figure 6 is a bottom view illustrating an advantageous detail of the ventilation nozzle according to the invention. The object of the invention relates to a ventilation nozzle 1 of the passenger compartment 20 of a vehicle in the general sense, forming part of a ventilation system of the passenger compartment of a vehicle. This aeration system is not described more precisely because it is well known to those skilled in the art and is not part of the subject of the invention. This ventilation system conventionally opens into at least one orifice provided in the dashboard of the vehicle and in which is mounted by any appropriate means, the ventilation nozzle 1 to close this orifice and to control the direction of the flow of d air coming out of the aeration system. As is apparent from the figures, the ventilation nozzle 1 comprises at least one body 2 having a circulation channel 3 for the air opening on one side of the body, along an air inlet face 4 and on a opposite side of the body, according to an air outlet face 5. According to the first embodiment shown in FIGS. 1 to 3, the venting nozzle 1 comprises a single body 2 intended to be fixedly mounted in the orifice of the aeration system whereas in the embodiment illustrated in FIGS. 4 to 6, the ventilation nozzle 1. comprises two bodies 2 intended to be mounted mobile in rotation. Conventionally, the aeration system ensures the supply of air 5 into the circulation channel 3, from the air intake face 4 of the body 2, in an undifferentiated direction that can go from a tangential direction at a normal direction to the air intake face. Each circulation channel 3 extends in a first direction x between two main walls 7 and 8 of the body, respectively called before 10 and rear and placed vis-à-vis one of the other. Each circulation channel 3 also extends along a second direction y, namely a direction transverse to the first direction, between two lateral walls 9 and 10 of the so-called left and right body, placed opposite each other. the other.

The two main walls 7 and 8 which are flat in the illustrated example, are connected together by the side walls 9, 10 so as to form a duct closed around its circumference and internally defining the circulation channel 3. In the example shown in the drawings, the circulation channel 3 have a rectangular cross section 20. Of course, the circulation channel 3 may have a different cross section as square or polygonal in the general sense, or circular or oblong for example. Conventionally, air bypass fins 13 are positioned in the circulation channel 3 extending from a main wall 10 to the other 11 and substantially from the air inlet face 4 to the 5. Each fin 13 thus comprises an upstream end portion 14 which is established at the level of the air inlet face 4 and a downstream end portion 15 situated at the outlet end Air 5. The air circulation channel 3 is thus divided by the fins 13 into several individual channels of air ducting between two adjacent fins. In this regard, it should be noted that the circulation channel 3 is delimited in the second direction y by the fins 13 which are close to the side walls 9, 10 since the air does not exit between said fins and the side walls. 9, 10 as clearly shown in Figs. 3 and 4C. According to the invention, the ventilation nozzle 1 according to the invention comprises, from a first side wall, namely the left side wall 9 in the illustrated example, a first series Si of fins 13 each presenting a curved profile whose concavity is turned towards this first side wall 9. Thus, as is more clearly apparent from FIGS. 3 and 4C, each fin 13 of this first series S1 is in the form of a circular arc with a defined radius of curvature.

According to the invention, the radius of curvature of the fins 13 of this first series S1 progresses as the fins move away from the first side wall (ie left 9 in the illustrated example) to homogenize the outgoing air flow. The curvature of the fins 13 of this first series S1 is not identical. As can be seen from the figures, the fins 13 have an inclination with respect to a direction z perpendicular to the first x and second directions y, this inclination of the fins 13 with respect to the direction z diminishing as the distance fins relative to the first side wall. For example, the downstream end portions 15 of the three fins 13 of this first series Si taken from the left side wall 9 in the illustrated example have at the air outlet face 5 planes tangents T whose inclination with respect to the direction z, are respectively 43 °, 35.5 ° and 23 °. According to an advantageous characteristic, the downstream end portions 25 of the fins of the first series Si have, at the level of the air outlet face 5, tangent planes T whose orientation evolves in a progressive step in the opposite direction of the first side wall. In the illustrated example, the deviation of the inclination between the first fin and the second fin taken from the left side wall 9 is 7.50 while the difference in inclination between the second fin and the third fin is 12.5 °. Advantageously, each fin 13 of the first series Si has a downstream end portion 15 such that the distance between the downstream end portions of two neighboring fins belonging to the first series Si is identical. In other words, the gap between the fins of this first series S1 taken at their downstream end portions 15 is identical.

In the illustrated example, the first series S1 of fins has three fins 13. Of course, the number of fins 13 belonging to this first series may be different depending on the size of the channel 3 and the desired homogeneity . As will be better understood in the following description, the fins of this first series allow a homogenization of the air flow in an angular range of less than 90 °, from the left of the nozzle. Advantageously, each fin 13 of the first series Si comprises an upstream end portion 14 whose tangent plane situated at the level of the air inlet face 4 makes an angle alpha of between 80 ° and 90 ° relative to said air inlet face. In other words, the fins 13 of the first series Si open on the air inlet face 4 in a direction substantially perpendicular to the air inlet face. According to an advantageous embodiment, the distance between the upstream end portions 14 of two neighboring fins belonging to the first series S1 is identical. According to another variant embodiment, the nozzle according to the invention comprises a second series S2 of fins 13 for homogenizing the outgoing air flow, each having a curved profile whose concavity is turned in a direction opposite to that of the fins of the first series S1 that is to say with a concavity facing the second side wall 10 to be right in the example shown. The radius of curvature of the fins 13 of this second series S2 progresses as the said fins are brought closer to a median plane M between the first and second sets of fins. In other words, the radius of curvature of the fins 13 of this second series S2 progresses as the fins move away from the second side wall (ie right in the illustrated example) for 3034050 9 homogenize the outgoing air flow. The curvature of the fins 13 of this second series S2 is not identical. As can be seen in the Figures, the fins 13 of this second series have an inclination with respect to a direction z perpendicular to the first x and second directions y, this inclination of the fins 13 with respect to the direction z decreasing as and when the spacing of the fins relative to the second side wall. For example, the downstream end portions 15 of the three fins of this second series S2 taken from the right-hand side wall in the illustrated example have, at the level of the air outlet face 5, tangential planes T whose inclination with respect to the direction z, are respectively 43 °, 35.5 ° and 23 °. According to the preferred embodiment illustrated, the fins of the first and second series occupy symmetrical positions with respect to their median plane M. According to an advantageous characteristic, the downstream end portions 15 of the fins of the second series 52 have level of the air outlet face 5, tangent planes T whose orientation evolves in a progressive step in the opposite direction of the second side wall. In the illustrated example, the deviation of the inclination between the first fin and the second fin taken from the right side wall 10 is 7.5 ° while the difference of the inclination between the second fin and the third fin is 12.5 °. Advantageously, each fin 13 of the second series S2 comprises a downstream end portion 15 such that the distance between the downstream end portions of two neighboring fins belonging to the second series S2 is identical. In other words, the gap between the fins of this second series S2 taken at their downstream end portions 15 is the same. In the illustrated example, the second series 52 of fins 13 has three fins. Of course, the number of fins 13 belonging to this series may be different depending on the size of the channel 3 and the desired homogeneity. As will be better understood in the following description, the fins of this second series allow a homogenization of the air flow in an angular range of less than 90 °, starting from the right of the nozzle 3034050. In the exemplary embodiment illustrated in FIGS. 1 to 3, the fins of the first S1 and second S2 series are positioned in a common air circulation channel 3 arranged in a single body 2 whereas in the embodiment illustrated in FIGS. 4 to 6, the fins of the first S1 5 and second 52 series are positioned in separate channels 3 of air circulation, arranged in two different bodies 2. Advantageously, each fin 13 of the second series S2 comprises an upstream end portion 14 whose tangent plane situated at the level of the air intake face 4 makes an angle alpha lying between 80 ° 10 and 900 relative to said air intake face. In other words, the fins 13 of the second series S2 open on the air inlet face 4 in a direction substantially perpendicular to the air inlet face. According to an advantageous embodiment, the distance between the upstream end portions 14 of two neighboring fins belonging to the second series S2 is identical. According to a preferred variant embodiment, the nozzle 1 according to the invention comprises a third series S3 of fins 13 comprising at least one fin 13 with a straight profile, occupying a position close to the fin of the first S1 and / or second series S2, having the largest radius of curvature. In the exemplary embodiment illustrated in FIGS. 1 to 3, the third series S3 of fins 13 comprises two fins 13 located on either side of the median plane M so that each of these fins is situated opposite respectively to the left side wall 9 and the right side wall 10 flanking the fins of a series. Thus in the illustrated example, each fin 13 of the third series S3 is close to the fin farthest from the side wall towards which its concavity is rotated. Advantageously, the distance between the upstream end portions 14 of two neighboring fins belonging to the first series and the third series is identical. Similarly, the distance between the upstream end portions 14 of two neighboring fins belonging to the second series and the third series is identical.

Advantageously, the distance between the downstream end portions 15 of two neighboring fins belonging to the first series and the third series is identical. Similarly, the distance between the downstream end portions 15 of two neighboring fins belonging to the second series 5 and the third series is identical. According to a preferred embodiment, the downstream end portions 15 of the fins of the first and third series have at the air outlet face 5, tangent planes T whose orientation evolves in a progressive step in the opposite direction at the first side wall 9 in the direction of which the concavity of the fins of the first series is turned. According to this example, each fin of the third series S3 has at the air outlet face 5, a tangential plane T whose inclination relative to the direction z, is respectively 6.5 °. Also, the difference in the inclination between the third fin of the first series S1 and the fin 15 adjacent to the third series S3 is 16.5 ° so that the orientation of the tangent planes evolves in a progressive step. respectively opposite direction of the first side wall (7.5 °, 12.5 ° and 16.5 °). In the same way, the downstream end portions 15 of the fins of the second and third series have, at the outlet face 20 of air 5, tangent planes T whose orientation evolves in a progressive step in the direction of the plane. median M. According to this example, each fin of the third series S3 has at the air outlet face 5, a tangent plane whose inclination relative to the direction z, is respectively 6.5 °. Also, the deviation of the inclination between the third fin of the second series S2 and the fin adjacent to the third series S3 is 16.5 ° so that the orientation of the tangent planes evolves in a progressive step in respectively opposite direction of the second side wall (7.5 °, 12.5 ° and 16.5 °). It should be noted that according to the embodiment illustrated in FIGS. 1 to 3, the fins of the third series S3 are adjacent to each other and define between them an individual air circulation channel so that the fins of the third series are placed in the middle of a channel 3 provided with the fins first and second series. According to the illustrated embodiment 3034050 12 in Figs. 4 to 6, the fins of the third series S3 are close to a side wall, ie straight for the fin of the third series next to a fin of the first series S1 and to be left 9 for the fin of the third series next to a fin of the second series S2. Thus, according to this example, the fins of the first and third series are positioned in an air circulation channel arranged in a body 2 which is separate or different from another body 2 whose circulation channel 3 is provided with the fins. of the second series and the third series. As is more particularly apparent from Figs. 4 to 6, each fin support body 2 10 forms a rotating cylinder equipped with an axis of rotation supported by a housing 20. For example, each cylinder 2 is provided on its flanks, two axes 19 guided in rotation in housings 21 arranged in the housing 20. Each cylinder 2 is rotatable so that the upstream end 14 and downstream end portions 15 of the fins 13 pivot in transverse planes which are perpendicular to the air inlet face. 4. In other words, the cylinder 2 pivots about an axis perpendicular to the third direction z to ensure the inclination of the fins from top to bottom or from front to back. Of course, the housing 20 has, on the one hand, an air supply opening 24 communicating with the air inlet face 4 of the bodies 2 to allow air to enter the circulation channels 3 and 3. on the other hand, an outlet window 25 for air into which the air outlet face 5 of the body can open in the open position of said nozzle. Advantageously, each rotating cylinder 2 is equipped, from its main faces 7, 8, with shut-off skirts 26 partially or completely closing off the outlet window 25 of the housing as a function of the angular position of the cylinder 2. Thus, in the maximum open position illustrated by FIGS. 4 and 4B, the air outlet face 5 of the body 2 opens completely into the outlet window 25 of the housing, being directed in the z-direction, that is to say upwards (FIG.

4B). During a pivoting of the cylinder 2, the air flow leaving the outlet face 5 of the body 2 is oriented either towards the front or towards the rear as shown in FIGS. 5 and 5A. It should be noted that in this intermediate position, a part of the air flow leaving the outlet face 5 of the body 2 is blocked by the housing 20. Of course, the cylinder 2 can be rotated according to a value for which the skirt 26 completely close the exit window 5 of the housing. Of course, each cylinder 2 is provided with a rotational control member 28 such as a half-operating ring arranged at the sidewalls of the cylinder and advantageously provided with ribs favoring its grip.

In the illustrated example, the housing 20 has two rotating cylinders mounted side by side. Of course, such a housing can be equipped with a single cylinder 2 or with a number of cylinders greater than 2. Each cylinder 2 can be controlled in rotation independently or as illustrated in FIG. 6, in a grouped manner. According to this mode of operation, the nozzle 1 comprises an angular assembly member 30 between the rotating cylinders 2 mounted side by side. For example, this assembly member 30 is a clip that engages in orifices presented by the adjacent flanks of the two bodies to provide an angular connection between the two cylinders. The removal of this clip 30 allows individual control of the rotating cylinders. The invention is not limited to the examples described and shown because various modifications can be made without departing from its scope.

Claims (10)

CLAIMS1- Aeration nozzle for vehicles comprising at least one body (2) having a circulation channel (3) for air opening on one side of the body, according to an air intake face (4) and on a opposite side of the body, according to an air outlet face (5), the circulation channel (3) extending in a first direction (x) between two main walls said front (7) and rear (8) and according to a transverse direction (y) between two so-called left (9) and right (10) side walls, a series of air bypass fins (13) being positioned in the circulation channel extending from a wall main to the other, characterized in that it comprises from a side wall (9, 10), a first series (S1) of fins (13) each having a curved profile whose concavity is turned towards the said side wall, the radius of curvature of the fins of this first series (Si) progressing as and when the distance of fins relative to said side wall to homogenize the flow of outgoing air. 2 - Aeration nozzle according to claim 1, characterized in that it comprises a second series (52) of fins (13) for homogenizing the outgoing air flow, each having a curved profile whose concavity is rotated according to a direction opposite to that of the fins of the first series (Si), the radius of curvature of the fins of this second series (S2) progressing as the said fins approach a median plane (M) between the first and second set of fins. 3 - Aeration nozzle according to claim 2, characterized in that the fins (13) of the first and second series (Si, S2) occupy symmetrical positions with respect to their median plane (M). 4 - Aeration nozzle according to one of claims 1 to 3, characterized in that it comprises a third series (S3) of fins (13) having at least one fin having a straight profile, occupying a position close to the fin (13) of the first (S1) and / or second (S2) series, having the largest radius of curvature. 5 - Aeration nozzle according to one of claims 1 to 4, characterized in that each fin (13) of the first (Si) and second (S2) series 3034050 15 comprises an upstream end portion (14) whose tangent plane located at the air inlet face (4) is at an angle between 80 ° and 90 ° with respect to said air inlet face. 6 - Aeration nozzle according to one of claims 1 to 5, characterized in that the distance between the upstream end portions (14) of two adjacent fins (13) belonging to the first series (Si) and / or second series (S2) and / or the fin (13) of the third series (S3) with the fin next to the first or second series, is identical. 7 - Aeration nozzle according to one of claims 1 to 6, characterized in that each fin (13) has a downstream end portion (15) located at the air outlet (5) and in the distance between the downstream end portions (15) of two adjacent fins belonging to the first series (Si) and / or second series (S2) and / or the fin of the third series (53) with the wing adjacent the first or second series, is identical. 15 8 - Aeration nozzle according to one of claims 1 to 7, characterized in that the downstream end portions (15) of the fins respectively of the first series (Si) and the second series (S2) present at the the air outlet face (5), tangent planes whose orientation evolves in a progressive step in the respectively opposite direction of said side wall and the median plane. 9 - Aeration nozzle according to one of claims 1 to 8, characterized in that the downstream end portions (15) of the fins (13) respectively of the first (Si) and third (S3) series and second ( S2) and third (S3) series have at the air outlet face (5), tangent planes whose orientation evolves in a progressive step in the direction respectively opposite to said side wall and the median plane. 10 - Aeration nozzle according to one of claims 1 to 9, characterized in that the circulation channel (3) has a polygonal section, oblong or circular. 30 il - Aeration nozzle according to one of claims 1 to 10, characterized in that the fins (13) of the first, second and third series are 3034050 16 positioned in a channel (3) common air circulation arranged in a single body (2). 12 - Aeration nozzle according to one of claims 1 to 10, characterized in that the fins (13) of the first and second series are 5 positioned in channels (3) separate air circulation, arranged in two bodies (2) different, each of these bodies being equipped with fins (13) of the third series (S3). 13 - Aeration nozzle according to claim 11 or 12, characterized in that each fin support body (2) (13) forms a rotating cylinder equipped with an axis of rotation (19) supported by a housing (20). ) so that the upstream end portions (14) and downstream end portions (15) of the fins pivot in transverse planes which are perpendicular to the air inlet face (4), this housing having a feed opening of air communicating with the air intake face (4) of the body and an outlet window in which the air outlet face (5) of the body can open in the open position of said nozzle. 14 - Aeration nozzle according to claim 13, characterized in that each rotating cylinder (2) is equipped, from its main faces, with shut-off skirts (26) partially or completely closing the exit window ( 25) of the housing according to the angular position of the cylinder. 15 - Aeration nozzle according to claims 13 or 14, characterized in that each body (2) is provided with a control member (28) in rotation. 25 - Aeration nozzle according to one of claims 13 to 15, characterized in that it comprises a member (30) for angular assembly between two rotating bodies mounted side by side.