• 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:
    A fluid diffusion device (DD) is coupled to an end (EC) of a conduit (CD) in which a fluid flows. This device (DD) comprises a main part (PP), defining a pipe having an internal face (FI) of conical shape and having an upstream end (EA1) adapted to be coupled to the end (EC) of the conduit (CD) and a downstream end (EV1) having an inner section having a surface greater than that of the upstream end (EA1), and acting means (MA), substantially installed at the interface between the end (EC) and end upstream (EA1) and arranged to act on the fluid by locally reducing the surface of its section, by spacing at least a selected portion of the inner face (FI), to orient the fluid in a main direction chosen and with a rate chosen expansion.
    公开号:FR3031474A1
    申请号:FR1550218
    申请日:2015-01-12
    公开日:2016-07-15
    发明作者:Herve Lazure；Erwan Collin；Joel Delville；Carine Fourment
    申请人:Centre National de la Recherche Scientifique CNRS；Peugeot Citroen Automobiles SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to fluid diffusion devices that are intended to be coupled to a conduit (or pipe) in which circulates. a fluid (gaseous, liquid or multiphase). In certain fields, such as for example vehicles, possibly of the automotive type, fluid diffusion devices (or aerators or diffusers) are used to diffuse a fluid that has come from a conduit in at least a part of a vehicle. zone and / or according to a chosen main direction. In order to allow a user to choose the part of the zone in which he wants the fluid to be diffused and / or the main direction of diffusion of this fluid, the fluid diffusion devices generally have at least one set of fins, possibly mounted on a moving part, such as an open half-sphere. These fins are moving parts (possibly relative to each other), frequently having complex shapes and therefore difficult to manufacture, whose movements often require coupling with other driving parts (also frequently complex shapes and therefore difficult to manufacture) which generally requires several assembly operations. This results in a relatively high cost, a style that is difficult to evolve, significant pressure losses, a difficulty in maintaining the flow rate for large deflection angles, and a low diffusion of the fluid that makes it difficult to optimize the mixture thermally. in which he participates. The invention therefore aims to provide an alternative solution which has no fins and does not have all or part of the aforementioned drawbacks. To this end, it proposes a fluid diffusion device intended to be coupled to an end of a conduit in which a fluid circulates, and comprising at least: a main part defining a pipe having an internal face of conical shape and having an upstream end adapted to be coupled to the end of the conduit and a downstream end having an inner section having a surface greater than that of the upstream end, and - means of action suitable for being installed substantially at the interface between the end of the conduit and the upstream end of the main portion and arranged to act on the fluid by locally reducing the surface of its inner section, by spacing at least a selected portion of the inner face, to orient the fluid following a chosen main direction and with a chosen expansion rate. Thus, in particular, a reduction in the number of moving parts and the complexity of the shapes, a simplification of the assembly, a better directivity of the fluid, a rate of expansion of the fluid more easily controllable, and an improvement of the mixture fluid in the area where it is diffused. The diffusion device according to the invention may comprise other characteristics which may be taken separately or in combination, and in particular: the internal sections of its main part may be circular in all parts; the conical shape may have a divergence angle of between about 5 ° and about 25 °; It may comprise at least one roof, on the one hand, having an inner section having an increasing surface between an upstream end, secured to the downstream end of the main part, and a downstream end, and, on the other hand, able to modify the main direction chosen and / or the rate of expansion chosen, defined by the means of action, by a Coanda effect; 30> The internal sections of the pavilion can be circular everywhere; in a first embodiment, its means of action may comprise, on the one hand, a plate installed against the upstream end of the main part and provided with a hole having a shape substantially identical to that of the internal section of the upstream end of the main part, and, secondly, control means arranged to move this plate in a plane substantially parallel to the inner section of the upstream end of the main part, so orienting the fluid in a selected principal direction and with a chosen expansion ratio; the control means may comprise three screws placed substantially at 120 ° from each other, having the end end in contact with the plate; in a second embodiment, its means of action may comprise, on the one hand, at least one pneumatic circuit supplying pressurized air with the nozzles installed in openings defined in at least one selected location of the upstream end of the main part, and, on the other hand, control means arranged to selectively operate each pneumatic circuit so that at least one of the associated nozzles injects a jet of pressurized air in a plane substantially parallel to the internal section of the upstream end of the main part, so as to orient the fluid in a selected main direction and with a chosen expansion rate. The invention also proposes a vehicle, possibly of automobile type, and comprising at least one fluid circulation duct having an end coupled to at least one fluid diffusion device of the type of that presented above.
    [0002] Other features and advantages of the invention will be apparent from the following detailed description, and the accompanying drawings, in which: FIG. 1 schematically illustrates, in a sectional view in an XZ plane, a portion of a conduit comprising an end coupled to an exemplary embodiment of a fluid diffusion device according to the invention, placed in a first state, FIG. 2 schematically illustrates, in a sectional view in the XZ plane, the 1 of FIG. 1 with its fluid diffusion device placed in a second state, FIG. 3 schematically illustrates, in a sectional view in an XY plane (at the upstream end of the main part), the FIG. 4 illustrates diagrammatically, in a sectional view in the XY plane (at the upstream end of the main portion), the diffusion device of FIG. 1 in its first state, and FIG. d e fluid of Figure 1 placed in its second state. The object of the invention is notably to propose a fluid diffusion device DD intended to be coupled to an end EC of a conduit CD in which a fluid circulates. In what follows, it is considered, by way of non-limiting example, that the conduit CD and its fluid diffusion device DD are intended to equip a motor vehicle, such as a car. Therefore, the fluid is a gas (and more precisely air). But the invention is not limited to this application. Indeed it relates to any system, apparatus, device, installation, or building may comprise at least one conduit for the circulation of a fluid to be diffused in a selected portion of a zone and / or in a main direction of diffusion chosen. Thus, it concerns vehicles (whatever the type (land, sea (or fluvial), 20 or air), facilities (including those of industrial type), houses and buildings, and more generally all system comprising at least one fluid to be dispensed, whether in liquid, gaseous or multiphase form, and in particular blowers, air curtains, jacuzzis and whirlpools, propulsion jets of nautical or aeronautical devices.
    [0003] Furthermore, it will be considered in the following, by way of nonlimiting example, that the conduit CD and its fluid diffusion device DD are intended to be part of a heating / air-conditioning system of a motor vehicle. But this is not obligatory. Thus, they could, for example, be part of an air treatment device (such as for example a nebulizer or a fogger), possibly portable, or a ventilation device. For example, a diffusion device (fluid) DD according to the invention can be installed in a dashboard, a ceiling lamp, a console, a seatback or a door of a vehicle. In FIGS. 1 to 4, the direction X is a longitudinal direction, the direction Y is a transverse direction, perpendicular to the direction X, and the direction Z is a vertical direction, perpendicular to the longitudinal direction X and transverse direction Y. schematically shown in Figures 1 and 2 a portion of a conduit CD comprising an end EC coupled to an exemplary embodiment of a DD diffusion device according to the invention. The end EC of the conduit CD has, for example, a first inner section s1 of substantially circular shape and having a first surface. Note that this end EC may optionally be provided with a connecting piece or interface (or adapter). In what follows and what precedes the internal section is considered in the plane YZ which is perpendicular to the longitudinal direction X. Moreover, the main direction of circulation of the fluid (here of air) in the end EC of CD conduit (shown by the arrow F1 of Figures 1 and 2) is substantially parallel to the longitudinal direction X. As shown in non-limiting manner in Figures 1 and 2, a diffusion device DD, according to the invention, comprises at least a part main 20 PP and MA means of action coupled together. The (each) main part PP defines a pipe having an internal face FI conical (and therefore divergent) and having upstream ends EA1 and downstream EV1 opposite. The upstream end EA1 is adapted to be coupled to the end EC of a conduit CD and therefore preferably has an internal cross-section of substantially identical shape and surface to those of the first internal section and the downstream end EV1. has a second internal section s2 of a surface strictly greater than (and therefore larger than) that of the upstream end EA1. In what follows and what precedes the notions of "upstream" and "downstream" must be considered in relation to the direction of circulation of the fluid (in this case a flow of air). An upstream part of an element is therefore traversed by the air flow before a downstream part of the same element. Note that when the end EC is provided with a connecting piece or interfacing (or adapter), the upstream end EA1 of the main part PP is coupled to this connecting piece or interfacing, which then has the first inner section s1 which is substantially identical to that of the upstream end EA1.
    [0004] For example, the inner sections of the main portion PP are circular in shape. But this is not an obligation. Indeed, they could have any shape or section, including rectangular, square, pentagonal, hexagonal or octagonal. Preferably, these inner sections have a shape identical to that of the first inner section s1 of the EC end of the CD conduit. The angle of divergence of the conical shape is preferably between about 5 ° and about 25 °. For example, this angle of divergence can be chosen equal to 13 °. The means of action MA are adapted to be installed substantially at the interface between the end EC of the conduit CD and the upstream end EA1 of the main part PP. They are arranged to act on the flow of air by locally reducing the surface of its internal section, by spacing at least a selected portion of the inner face FI of the main part PP, to direct this air flow in a main direction dp chosen and with a rate of expansion 20 chosen (possibly less than one (1)). The word "substantially" here means that the means of action MA can be installed either exactly at the interface between the end EC of the conduit CD and the upstream end EA1 of the main part PP, and therefore interposed between them ( EC and EA1), ie at the very beginning of the upstream end EA1 of the main part PP. A nonlimiting example of separation of the inner face FI to orient the air flow along a main direction dp chosen and with a chosen expansion ratio is shown in FIG. 2. The diffusion device DD is here placed in a second state. As can be seen, the intervention of the means of action MA, at or just before the upstream end EA1 (EA1), causes a recirculation zone ZR of a small portion of the flow. downstream of their place of intervention. This recirculation zone ZR has the effect of removing the remaining part of the air flow from the region of the inner face FI where it is temporarily produced, and thus of pushing this remaining part towards a region opposite to this zone of recirculation ZR and where it "sticks". The more or less important intervention of the means of action MA in the main part PP (or just before this last one (PP)) makes it possible to control the angle of deflection of the air flow and the rate of expansion of this latest. FIG. 1 illustrates the case where the means of action MA do not act on the flow of air and therefore where there is no spacing. The broadcasting device DD is here placed in a first state. Note that the divergence of the inner section of the main part PP spontaneously causes a slight expansion of the section of the air flow, contrary to what occurs in a portion of constant internal section. It will be noted, as illustrated in non-limiting manner in FIGS. 1 and 2, that the diffusion device DD may also and advantageously comprise at least one PD flag having an internal section having an increasing surface between an upstream end EA2, secured to the end downstream EV1 of the main part PP, and a downstream end EV2. This flag PD is arranged so as to modify by a Coanda effect the chosen principal direction dp and / or the chosen rate of expansion defined by the means of action MA and observable at the level of the downstream end EV1 of the main part PP. The main direction modified and observable at the downstream end EV1 of the main part PP is referenced dp 'in FIG. 2. It will be understood that the function of this flag PD is to amplify the disorientation of the main direction dp of air flow and / or rate of expansion of the air flow induced (s) by the MA action means in cooperation with the main part PP. Therefore, the use of a PD flag and the shape and dimensions of this eventual flag PD are chosen according to the maximum amplitude of orientation of the main direction of the airflow and / or the maximum amplitude of the rate of expansion of the air flow that is desired and / or the desired orientation dynamic (which is not necessarily centered on the axis of the device). For example, the internal sections of the PD pavilion are circular in shape everywhere. But this is not an obligation. Indeed, they could have any shape or section, including rectangular, square, pentagonal, hexagonal or octagonal. Preferably, these inner sections have a shape identical to that of the main portion PP. As indicated above, the surface area of the downstream end section EV2 of the horn PD is larger than that of its upstream end EA2. Note, however, that the order of magnitude of the radius of curvature of the horn PD is preferably between about two times and about eight times the inner radius of the upstream end EA1 of the main portion PP. It will also be noted that the main part PP and the flag PD can be either two pieces that are secured to one another or two subparts of the same part. At least two embodiments may be envisaged for the MA means of action. A first embodiment is illustrated in FIGS. 1 to 4. In this first embodiment, as appears better in FIGS. 3 and 4, the action means MA comprise a plate PA and control means MC.
    [0005] The plate PA is installed against the upstream end EA1 of the main part PP (at the interface with the end EC of the conduit CD) and is provided with a hole TP which has a shape substantially identical to that of the section internal of the upstream end EA1 of the main part PP. In the example considered here this form is substantially circular.
    [0006] Preferably, and as illustrated, the dimensions of the hole TP are also substantially identical to those of the upstream end EA1 of the main part PP, so as not to disturb the air flow (arrow F1) when its main direction must not be modified. It will be noted that the plate PA here is of substantially circular shape.
    [0007] 30 Put that not obligatory. It could indeed have other forms, including square or rectangular. The control means MC are arranged to move the plate PA in a plane YZ which is substantially parallel to the inner section of the upstream end EA1 of the main part PP, so as to orient the air flow in one direction. main chosen dp and with a chosen expansion rate. The plate PA is here used as an "obstacle" that is placed more or less in the path of the air flow.
    [0008] The displacement of the plate PA can be done in a single direction (for example Z or Y) in order to induce a modification of the main direction mainly in a plane (for example XZ or XY), or in at least two directions different (for example Z and Y) to induce a change in the main direction in at least a portion of the directions contained in the half-space in front of the plate PA. For example, and as shown in non-limiting manner in FIGS. 3 and 4, the control means MC may comprise three screws placed substantially at 120 ° from each other having an end in contact with the plate PA (for example at its level). peripheral edge). It will be understood that in this example the three screws induce displacements in three different directions contained in the YZ plane and thus allow a modification of the main direction in almost all the directions contained in the half-space in front of the plate PA. These screws may, for example, be mounted on a PS wall 20 fixedly installed (here in the vehicle) and to which is / are secured (s) the end EC of the conduit CD and / or the upstream end EA1 of the part main PP. This wall PS may, for example, be a sub-part of the dashboard of the vehicle, or constitute a covering cover secured to the latter. Alternatively, the screws may be secured to the EC end of the CD conduit or to the upstream end EA1 of the main portion PP. The screws can be rotated either manually by a user or automatically, for example by means of electric motors whose respective operations are controlled by at least one actuator 30 controlled by a user. It should be noted that other technical means can be envisaged for moving the plate PA. Thus, it is possible, for example, to use two levers intended to control the vertical and horizontal orientations of the plate PA, or a button associated with a means for locking the mobile part by friction. It will also be noted, as illustrated without limitation in FIGS. 1 and 2, that it is preferable to provide sealing means on either side of the zone in which the plate PA moves, in order to avoid that air does not escape out through the hole TP when part of the latter (TP) is placed beyond the outer face of the front end EA1 of the main part PP and / or from the EC end of the CD conduit. These sealing means may, for example, be in the form of two rubber rings (possibly synthetic), silicone or felt that are respectively placed on the front end EA1 of the main part PP and on the EC end of the CD conduit. In a second embodiment (not shown), the means of action MA comprise at least one pneumatic circuit and control means (or actuators). Each pneumatic circuit is arranged to supply pressurized air with the nozzles which are installed in openings defined in at least one selected location of the upstream end EA1 of the main part PP, preferably located in the plane YZ.
    [0009] In this case the control means are arranged to selectively operate each pneumatic circuit so that at least one of the associated nozzles injects a jet of pressurized air into a plane YZ which is substantially parallel to the internal section of the end. upstream EA1 of the main part PP, so as to orient the air flow in a main direction dp chosen and with a selected expansion ratio. This type of control is described in particular in patent document US2004216446. As in the first embodiment, the air jets may act in a single direction (e.g., Z or Y) to induce a change in the principal direction mainly in a plane (e.g. XZ or XY), or well following at least two different directions (for example Z and Y) to induce a change in the main direction in at least part of the directions contained in the half-space in front of the nozzles.
    [0010] For example, it is possible to use three pneumatic circuits associated respectively with three nozzles placed substantially at 120 ° from each other. It will be understood that in this example the three nozzles induce displacements in three different directions contained in the YZ plane and thus allow a modification of the principal direction in almost all the directions contained in the half space in front of the nozzles. The respective operations of the pneumatic circuits can be controlled by at least one actuator which is itself controlled by a user. Note that the pneumatic circuits may be optionally arranged to vary the flow rates of the air jets, and not to operate only in binary mode (or all or nothing). The variation of the flow makes it possible to facilitate the control of the amplitude of deflection of the air flow. The use of several jets of air also makes it possible to control the mixture of the air flow (here in a part of the passenger compartment). For this purpose it is possible to operate the pneumatic circuits independently in order to modify both the directivity and the diffusion of the flow. The pneumatic actuators can then be activated either simultaneously, either individually or in a more complex azimuthal and temporal sequence.
    [0011] It will also be noted that the broadcasting device DD may possibly comprise several (at least two) principal parts PP placed one after the other and each associated with its own means of action MA. In this case, the operations of the different means of action MA are preferentially coupled. This option is intended to increase the maximum amplitude of orientation of the main direction of the airflow and / or the rate of expansion of the airflow. The invention offers several advantages, among which: a reduction in the number of moving parts and the complexity of the shapes, and thus a reduction in costs, a simplification of the assembly, a better directivity of the fluid flow, over a larger range, - a rate of expansion of the flow of fluid more easily controllable, - an improvement of the fluid mixture in the area where it is diffused, - a possible autopilot, especially to improve further more fluid mixing and / or implement new management strategies for aerothermal in a chamber, - a significant reduction in pressure losses, - the possibility of making style effects.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. A fluid diffusion device (DD) adapted to be coupled to an end (EC) of a conduit (CD) in which a fluid circulates, characterized in that it comprises at least i) a main part (PP) defining a pipe having an inner face (FI) of conical shape and having an upstream end (EA1) adapted to be coupled to said end (EC) of the pipe (CD) and a downstream end (EV1) having an inner section having a top surface to that of said upstream end (EA1), and ii) means of action (MA) adapted to be installed substantially at the interface between said end (EC) and upstream end (EA1) and arranged to act on said fluid in locally reducing the surface of its section, by spacing at least a selected portion of said inner face (FI), to orient said fluid 15 in a selected main direction and with a chosen expansion ratio.
    [0002]
    2. Device according to claim 1, characterized in that the inner sections of the main part (PP) are circular in shape.
    [0003]
    3. Device according to one of claims 1 and 2, characterized in that said conical shape has an angle of divergence of between about 5 ° and about 25 °.
    [0004]
    4. Device according to one of claims 1 to 3, characterized in that it comprises at least one horn (PD) i) having an inner section having an increasing surface between an upstream end (EA2), secured to said downstream end (EV1) of said main part (PP), and a downstream end (EV2), and ii) adapted to modify said selected main direction and / or said chosen expansion ratio, defined by said means of action (MA) , by a Coanda effect.
    [0005]
    5. Device according to claim 4, characterized in that the inner sections of said flag (PD) are everywhere circular. 30
    [0006]
    6. Device according to one of claims 1 to 5, characterized in that said means of action (MA) comprises i) a plate (PA) installed against said upstream end (EA1) of the main part (PP) and provided a hole (TP) having a shape substantially identical to that of the inner section 3031474 of said upstream end (EA1) of the main part (PP), and ii) control means (MC) arranged to move said plate (PA) in a plane substantially parallel to said inner section of the upstream end (EA1) of said main part (PP), so as to orient said fluid in a selected main direction and with a chosen expansion ratio.
    [0007]
    7. Device according to claim 6, characterized in that said control means (MC) comprise three screws placed substantially at 120 ° from each other, having an end in contact with said plate (PA).
    [0008]
    8. Device according to one of claims 1 to 5, characterized in that said means of action (MA) comprises i) at least one pneumatic circuit supplying pressurized air nozzles installed in openings defined in at least one chosen location said upstream end (EA1) of the main part (PP), and ii) control means arranged to selectively operate each pneumatic circuit so that at least one of the associated nozzles injects a pressurized air jet into a plane substantially parallel to said inner section of the upstream end (EA1) of said main part (PP), so as to orient said fluid in a selected main direction and with a chosen expansion ratio.
    [0009]
    9. Vehicle comprising at least one conduit (CD) fluid circulation, characterized in that it further comprises at least one fluid diffusion device (DD) according to one of the preceding claims, coupled to an end (EC) ) of said conduit (CD).
    [0010]
    10. Vehicle according to claim 9, characterized in that it is automotive type.
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    同族专利:
    公开号 | 公开日
    EP3247579A1|2017-11-29|
    FR3031474B1|2017-04-21|
    CN107206868A|2017-09-26|
    WO2016113480A1|2016-07-21|
    CN107206868B|2020-07-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS54108323A|1978-02-13|1979-08-24|Matsushita Electric Ind Co Ltd|Air blow-off device for vehicles|
    JPS60182641U|1984-05-15|1985-12-04|
    EP2149465A1|2008-07-31|2010-02-03|C.R.F. Società Consortile per Azioni|Motor-vehicle dashboard with main central portion having no outflow apertures for the ventilation air|
    DE102010049110A1|2010-10-21|2011-06-09|Daimler Ag|Air distribution device for motor vehicle, has air discharge opening and air guiding element over which air jet is variable in air outlet flow direction|
    DE102013111175B3|2013-10-09|2014-09-04|Dr. Schneider Kunststoffwerke Gmbh|Air outlet for air conditioning apparatus, has lying chambers for first terminal and second terminal, which are opened for supplying or discharging air for generating overpressure and low pressure respectively|WO2018158085A1|2017-03-01|2018-09-07|Bayerische Motoren Werke Aktiengesellschaft|Air vent for a motor vehicle|
    EP3842701A1|2019-12-26|2021-06-30|Koninklijke Philips N.V.|Apparatus, system and method for controlling airflow|JP3294144B2|1997-02-27|2002-06-24|豊田合成株式会社|Defroster|
    FR2829802B1|2001-09-19|2004-05-28|Centre Nat Rech Scient|DEVICE FOR CONTROLLING MIXTURE OF PROPELLENT JETS FOR AN AIRCRAFT REACTOR|
    CN103963608B|2013-01-31|2018-01-02|标致雪铁龙汽车贸易有限公司|A kind of air-conditioner air outlet device for vehicle|FR3056459B1|2016-09-23|2020-03-13|Valeo Systemes Thermiques|AIR FLOW COOLING DEVICE FOR VEHICLE AND ASSOCIATED HEATING, VENTILATION AND / OR AIR CONDITIONING SYSTEM|
    CN110466483B|2019-08-30|2020-08-18|亚太空列轨道交通有限公司|Rail braking heat dissipation device using both ejection and suction and coanda effect principles|
    法律状态:
    2016-07-15| PLSC| Publication of the preliminary search report|Effective date: 20160715 |
    2016-10-28| ST| Notification of lapse|Effective date: 20160930 |
    2016-12-16| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-23| RN| Application for restoration|Effective date: 20161121 |
    2017-02-10| FC| Decision of inpi director general to approve request for restoration|Effective date: 20170111 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 4 |
    2018-06-29| CA| Change of address|Effective date: 20180312 |
    2018-06-29| CD| Change of name or company name|Owner name: PEUGEOT CITROEN AUTOMOBILES SA, FR Effective date: 20180312 Owner name: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, FR Effective date: 20180312 |
    2019-12-19| PLFP| Fee payment|Year of fee payment: 6 |
    2020-12-17| PLFP| Fee payment|Year of fee payment: 7 |
    2021-12-15| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1550218A|FR3031474B1|2015-01-12|2015-01-12|DEVICE FOR DIFFUSION OF A FLUID WITH A DIVERGENT MAIN PART AND MEANS FOR ACTING ON THE FLUID, FOR A CONDUIT END|FR1550218A| FR3031474B1|2015-01-12|2015-01-12|DEVICE FOR DIFFUSION OF A FLUID WITH A DIVERGENT MAIN PART AND MEANS FOR ACTING ON THE FLUID, FOR A CONDUIT END|
    CN201580073166.9A| CN107206868B|2015-01-12|2015-12-16|Fluid diffusion device with divergent main part and component acting on fluid|
    PCT/FR2015/053558| WO2016113480A1|2015-01-12|2015-12-16|Device for diffusing a fluid with divergent main portion and means for acting on the fluid, for a pipe end|
    EP15822982.3A| EP3247579A1|2015-01-12|2015-12-16|Device for diffusing a fluid with divergent main portion and means for acting on the fluid, for a pipe end|
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