EP3247579A1 - Device for diffusing a fluid with divergent main portion and means for acting on the fluid, for a pipe end - Google Patents
Device for diffusing a fluid with divergent main portion and means for acting on the fluid, for a pipe endInfo
- Publication number
- EP3247579A1 EP3247579A1 EP15822982.3A EP15822982A EP3247579A1 EP 3247579 A1 EP3247579 A1 EP 3247579A1 EP 15822982 A EP15822982 A EP 15822982A EP 3247579 A1 EP3247579 A1 EP 3247579A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- main part
- upstream end
- section
- chosen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/34—Nozzles; Air-diffusers
- B60H1/3414—Nozzles; Air-diffusers with means for adjusting the air stream direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/12—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of sliding members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/28—Details or features not otherwise provided for using the Coanda effect
Definitions
- the invention relates to fluid diffusion devices which are intended to be coupled to a conduit (or pipe) in which a fluid circulates (gaseous, liquid or multiphase).
- fluid diffusion devices 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.
- the fluid diffusion devices 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.
- a fluid diffusion device intended for 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 broadcasting device according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
- the conical shape may have an angle of divergence of between approximately 5 ° and approximately 25 °;
- 5 - 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;
- the internal sections of the pavilion may be circular in shape
- its means of action can 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, on the other hand, control means arranged to move
- control means may comprise three screws placed substantially at 120 ° from each other, having an end at
- 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, other
- control means arranged to selectively operate each pneumatic circuit so that at least one of the associated nozzles injects a pressurized air jet 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 main direction chosen and with a 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.
- FIG. 1 schematically illustrates, in a sectional view in an XZ plane, a part of a duct comprising an end coupled to a
- FIG. 2 schematically illustrates, in a sectional view in the XZ plane, the conduit 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 fluid diffusion device of FIG. 1 placed in its first state, and
- FIG. 4 schematically illustrates, in a sectional view in the XY plane (at the upstream end of the main portion), the fluid diffusion device of FIG. 1 placed in its second state.
- the object of the invention is in particular to propose a fluid diffusion device DD intended to be coupled to an end EC of a conduit CD in which a fluid circulates.
- 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).
- 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.
- 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.
- an air treatment device such as for example
- a nebulizer or a fogger possibly portable, or a ventilation device.
- a diffusion device (fluid) DD can be installed in a dashboard, a ceiling lamp, a console, a seatback or a door of a vehicle.
- the direction X is a longitudinal direction
- the direction Y is a transverse direction, perpendicular to the direction X
- the direction Z is a vertical direction, perpendicular to the longitudinal directions X and transverse Y.
- FIGS. 1 and 2 diagrammatically show a portion of a duct CD comprising an end EC coupled to an exemplary embodiment of a broadcasting device DD 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).
- a broadcasting device DD comprises at least one main part) PP and means of action MA coupled to each other.
- 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 inner cross-section of substantially identical shape and area to those of the first inner section s1.
- 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.
- upstream and downstream must be considered in relation to the direction of circulation of the fluid (here 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.
- 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 end upstream EA1.
- 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 internal sections have a shape identical to that of the
- the angle of divergence of the conical shape is preferably between about 5 ° and about 25 °.
- this eagle of divergence can be chosen equal to 13 °.
- the means of action MA are suitable for being installed substantially
- the interface between the EC end of the CD conduit and the upstream end EA1 of the main part PP 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 chosen dp and with a rate
- 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), at the very beginning of the end
- FIG. 2 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
- means of action MA at the upstream end EA1 or just before it (EA1), causes a ZR recirculation zone of a small portion of the air 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 FI side region where it is temporarily produced, and therefore to push this remaining part to a region opposite to this ZR recirculation zone and where it "sticks".
- 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. It should be noted that the divergence of
- the DD diffusion device can also and advantageously
- This flag PD is arranged so as to modify by a Coanda effect the main direction chosen dp and / or the rate of expansion chosen, defined by the means
- this flag PD is to amplify the disorientation of the main direction dp of the airflow and / or the rate of expansion of the airflow induced by the means of MA action 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 directional amplitude 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).
- the inner sections of the PD pavilion are everywhere from circular 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 main portion PP.
- the surface area of the downstream end section EV2 of the horn PD is larger than that of its upstream end EA2.
- the order of magnitude of the radius of curvature of the flag PD is preferably between about two times and about eight) times the inner radius of the upstream end EA1 of the main part PP.
- 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.
- FIGS. 1 to 4 A first embodiment is illustrated in FIGS. 1 to 4.
- the action means MA comprise a plate PA and control means MC.
- 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.
- 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 flow of air (arrow F1) when its main direction must not be modified.
- the plate PA here is of substantially circular shape.
- the control means MC are arranged to move the plate PA in a plane YZ which is substantially parallel to the internal section of the upstream end EA1 of the main part PP, so as to direct the air flow along a main direction dp chosen and with a selected expansion ratio.
- the plate PA is here used as an "obstacle" that is placed more or less in the path of the air flow.
- 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) in order to induce a modification of the main direction in at least one part
- 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).
- These screws can, for example, be mounted on a wall PS
- 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 can be secured to
- 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) controlled by a user.
- sealing means may, for example, be in the form of
- the means of action MA comprise at least one pneumatic circuit and means of
- 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.
- 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 in a plane YZ which is substantially parallel to the internal section of the end. upstream EA1 of the main part PP, so as to direct the flow of air in one direction
- the air jets can act in a single direction (eg Z or Y) to induce a change in the main direction mainly in a plane (for example,
- XZ or XY example or in at least two different directions (for example Z and Y) in order to induce a modification of the principal direction in at least a part of the directions contained in the half space in front of the nozzles.
- Z and Y different directions
- the respective operations of the pneumatic circuits can be controlled by at least one actuator which is itself controlled by a user. It should be noted that the pneumatic circuits may be possibly
- 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:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Nozzles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1550218A FR3031474B1 (en) | 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 |
PCT/FR2015/053558 WO2016113480A1 (en) | 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 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3247579A1 true EP3247579A1 (en) | 2017-11-29 |
Family
ID=52824416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15822982.3A Withdrawn EP3247579A1 (en) | 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 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3247579A1 (en) |
CN (1) | CN107206868B (en) |
FR (1) | FR3031474B1 (en) |
WO (1) | WO2016113480A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3056459B1 (en) * | 2016-09-23 | 2020-03-13 | Valeo Systemes Thermiques | AIR FLOW COOLING DEVICE FOR VEHICLE AND ASSOCIATED HEATING, VENTILATION AND / OR AIR CONDITIONING SYSTEM |
DE102017203334A1 (en) * | 2017-03-01 | 2018-09-06 | Bayerische Motoren Werke Aktiengesellschaft | Air vents for a motor vehicle |
CN110466483B (en) * | 2019-08-30 | 2020-08-18 | 亚太空列(河南)轨道交通有限公司 | Rail braking heat dissipation device using both ejection and suction and coanda effect principles |
KR102625856B1 (en) * | 2019-11-01 | 2024-01-16 | 현대모비스 주식회사 | Air ventilation apparatus and method using Coanda effect |
EP3842701A1 (en) * | 2019-12-26 | 2021-06-30 | Koninklijke Philips N.V. | Apparatus, system and method for controlling airflow |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54108323A (en) * | 1978-02-13 | 1979-08-24 | Matsushita Electric Ind Co Ltd | Air blow-off device for vehicles |
JPS60182641U (en) * | 1984-05-15 | 1985-12-04 | 小島プレス工業株式会社 | register |
JP3294144B2 (en) * | 1997-02-27 | 2002-06-24 | 豊田合成株式会社 | Defroster |
FR2829802B1 (en) | 2001-09-19 | 2004-05-28 | Centre Nat Rech Scient | DEVICE FOR CONTROLLING MIXTURE OF PROPELLENT JETS FOR AN AIRCRAFT REACTOR |
DE602008002586D1 (en) * | 2008-07-31 | 2010-10-28 | Fiat Ricerche | Motor vehicle dashboard with main center and outlet openings for the ventilation air |
DE102010049110A1 (en) * | 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 |
CN103963608B (en) * | 2013-01-31 | 2018-01-02 | 标致雪铁龙(中国)汽车贸易有限公司 | A kind of air-conditioner air outlet device for vehicle |
DE102013111175B3 (en) * | 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 |
-
2015
- 2015-01-12 FR FR1550218A patent/FR3031474B1/en not_active Expired - Fee Related
- 2015-12-16 WO PCT/FR2015/053558 patent/WO2016113480A1/en active Application Filing
- 2015-12-16 EP EP15822982.3A patent/EP3247579A1/en not_active Withdrawn
- 2015-12-16 CN CN201580073166.9A patent/CN107206868B/en active Active
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016113480A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN107206868B (en) | 2020-07-07 |
FR3031474A1 (en) | 2016-07-15 |
WO2016113480A1 (en) | 2016-07-21 |
CN107206868A (en) | 2017-09-26 |
FR3031474B1 (en) | 2017-04-21 |
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Inventor name: LAZURE, HERVE Inventor name: DELVILLE, JOEL Inventor name: COLLIN, ERWAN Inventor name: FOURMENT, CARINE |
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Owner name: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Owner name: PSA AUTOMOBILES SA |
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