WO2023031377A1

WO2023031377A1 - Device for diffusing an active fluid, in particular an odour treatment fluid, with the aid of a vector flow

Info

Publication number: WO2023031377A1
Application number: PCT/EP2022/074409
Authority: WO
Inventors: Georges De Pelsemaeker; Mateo LOPEZ; Thibault Perrin
Original assignee: Valeo Systemes Thermiques
Priority date: 2021-09-03
Filing date: 2022-09-02
Publication date: 2023-03-09
Also published as: FR3126652A1; FR3126652B1

Abstract

The invention relates to a device for diffusing an active fluid, said device comprising a casing (1) defining at least one housing intended to accommodate a material configured to release the active fluid, said casing (1) comprising at least two sets of distinct fastening impressions (12, 14, 16), each of the sets of impressions (12, 14, 16) being configured to allow different positioning of the device in a vector flow driving the active fluid.

Description

DEVICE FOR DIFFUSING AN ACTIVE FLUID, IN PARTICULAR AN ODOR TREATMENT FLUID, USING A VECTOR FLOW

[1] The present invention relates to a device for diffusing an active fluid, in particular an odor treatment fluid. It will find its applications, for example, in the automotive field.

[2] In this field, it is known diffusers allowing a flow of the active fluid in the passenger compartment of a vehicle in order to perfume it and/or to mask bad odors, this by driving with the aid of a flow vector, in particular by an air flow.

[3] However, the installation possibilities of the diffusers available using this technology remain limited. This forces diffuser manufacturers to multiply their product ranges to offer diffusers adapted to different supports. This also forces users to use several diffusers in their vehicle to have an air treatment that is appropriate to the case in point.

[4] An object of the invention is to provide a diffusion device which at least partially overcomes the above drawbacks.

[5] The invention thus relates, according to a first aspect, to a device for diffusing an active fluid, said device comprising a housing defining at least one housing intended to receive a material configured to release said active fluid, said housing comprising at least two sets of distinct fixing cavities, each of said sets of cavities being configured to allow a different positioning of the device in a vector flow driving said active fluid.

[6] In this way, by placing the material releasing the active fluid in a housing and by providing said housing with several sets of specific fixing indentations, the same housing can be used in different configurations, each configuration corresponding to a type of given support and/or conditions of use. It is therefore no longer necessary to provide a multiplicity of diffusers integrating said active fluid, according to distinct characteristics, to adapt to each case. [7] According to additional characteristics, which can be implemented independently of each other or according to all technically possible combinations and which form as many embodiments of the invention:

- at least one of said sets of indentations or said sets of indentations are configured to allow said case to be fixed on a support so that said case is oriented transversely, in particular substantially perpendicularly, to an incident direction of said vector flow,

- said box extends along an axis of longitudinal extension,

- said housing comprises a plurality of passage windows for said active fluid,

- said windows extend angularly around the axis of longitudinal extension of the housing,

- at least one of said sets of indentations or said sets of indentations are configured to allow said housing to be fixed on a support so that said windows are oriented transversely, in particular substantially perpendicularly, to an incident direction of said vector flow,

- at least one of said sets of indentations, called first set of indentations, is configured to cooperate with a first support for fixing, in particular by snap-fastening, on said support, through a substrate,

- said substrate forms an air filter,

- said first support comprises a latching hook,

- said first set of indentations comprises at least one first flat surface formed on the surface of said housing to define a snap-in stop,

- said first set of indentations is located at the level of a middle part of said box,

- at least one of said sets of cavities, said second set of cavities, comprises a central slot provided on said housing so that said device can be fixed transversely to a wall separating two flow ducts of said vector flow ,

- the said accommodations are two in number,

- said slot separates said housings,

- said housing comprises transverse walls closing each of said housings on either side of said slot, - said slot opens at the level of the first flat(s),

- at least one of said sets of indentations, said third set of indentations, comprises forms of articulation in rotation of the housing in an opening/closing cover authorizing or not authorizing the diffusion of said active fluid outside the housing in function of a relative angular position of said housing and of said cover

- said device comprises a button for actuating the housing relative to the cover,

- said third set of indentations comprises a first hinge rib of the cover,

- said rib is located at a longitudinal end of said housing, called the distal end,

- said third set of indentations comprises at least one second flat,

- the said second flat or flats are configured to cooperate with complementary shapes located at the level of the said actuating button to allow the casing to be driven into the cover according to the said rotational articulation,

- the said second flat or flats are located at a longitudinal end of the said casing, called the proximal end,

- said cover comprises a second hinge rib,

- said button comprises an axial stop rib intended to cooperate with the cover,

- said button comprises axial projections,

- said axial projections have said complementary shapes and/or said abutment rib,

- said cover comprises means for fixing to a support,

- said cover comprises vector flux passage lights

- said slots are oriented along the axis of longitudinal extension of said box,

- said openings are intended to leave said windows free in a configuration allowing the diffusion of the active fluid,

- said device further comprises, in said housing(s), a plurality of balls made of a material configured to release said active fluid in gaseous form, said housing being further configured to allow flow of said active fluid by mixing with said vector flow,

- said housing is configured to be swept internally and/or externally by said vector flux,

- said housing has a substantially circular cross section along a portion at least said axis of longitudinal extension,

- said active fluid is an odor treatment fluid,

- said vector flow is gaseous, in particular air.

[8] Each of said sets of fixing impressions has its own interest and a diffusion device comprising a housing provided with only one of said sets of fixing impressions is also in accordance with the invention.

[9] The invention thus relates, according to a second aspect, to a device for diffusing an active fluid, said device comprising a housing defining a housing intended to receive a material configured to release said active fluid, said housing comprising at at least one set of fixing cavities allowing the device to be positioned in a vector flow driving said active fluid, said set of cavities being configured to cooperate with a support for fixing, in particular by snap-fastening, to said support through a substrate , including an air filter.

[10] In such a configuration, thanks to the use of a housing containing said material configured to release the fluid to be diffused, the invention makes it possible to use an active fluid which would not allow its direct integration into the substrate. It also allows the case to be used as an active fluid refill, which means that the entire substrate does not have to be changed once the active fluid has been used up.

[11] The invention also relates, according to a third aspect, to a device for diffusing an active fluid, said device comprising a housing defining a housing intended to receive a material configured to release said active fluid, said housing comprising at least one set of fixing indentations allowing positioning of the device in a vector flow driving said active fluid, said set of indentations comprising a central slot provided on said housing so that said device can be fixed transversely to a partition wall of two flow ducts of said vector flow.

[12] In such a configuration, thanks to the extension of the housing on either side of its fixing slot, the invention allows the active fluid to be driven by a vector flow distributed in different ducts and therefore to avoid the use of diffusers in each of the ducts. [13] The invention also relates, according to a fourth aspect, to a device for diffusing an active fluid, said device comprising a housing defining a housing intended to receive a material configured to release said active fluid, said housing comprising at least one set of fixing indentations allowing positioning of the device in a vector flow driving said active fluid, said set of indentations comprising forms of articulation in rotation of the casing in a support intended to form an opening/closing cover authorizing or not the diffusion of said active fluid outside the housing, depending on a relative angular position of said housing and of said cover.

[14] In this configuration, thanks to the articulated cover cooperating with the housing, the invention makes it possible to better control the diffusion of the active fluid by being able to open/close the housing at will. Said cover also makes it possible to envisage fixing to a large number of various supports.

[15] Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the appended drawings, including:

[16] Figure 1 is a perspective view of a first embodiment of the device according to the invention,

[17] Figure 2 is a cross-sectional view schematically illustrating the device of Figure 1 in use on a support,

[18] Figure 3 is an exploded view, in perspective, of a second embodiment of the device according to the invention,

[19] Figure 4 is an exploded view, in perspective, of the device of Figure 3 in use on a support,

[20] Figure 5 is an exploded view, in perspective, of a third embodiment of the invention,

[21] Figure 6 is a perspective view of the device of Figure 5, assembled and placed in a first configuration,

[22] Figure 7 is a perspective view of the device of Figure 5, assembled and placed in a second configuration. [23] As illustrated in the various figures, the invention relates to a device for distributing an active fluid. It will find its applications, for example, in the automotive field, in particular for the diffusion of the active fluid in a vehicle interior.

[24] As illustrated in Figures 1, 3 and 5, said device comprises a housing 1 and a plurality of balls 2 of a material configured to release said active fluid in gaseous form. Said balls 2 are illustrated outside the case because it is an exploded view but it is obvious that, according to the invention, they are inside said case 1. For this, said housing 1 defines at least one housing receiving said balls 2.

[25] In the illustrated embodiments, it is noted that the assembly formed by the housing 1 and the balls 2 that it contains is identical from one embodiment to another. The advantages of such an embodiment of the invention will be detailed below.

[26] Said housing 2 is configured to allow a flow of said active fluid by mixing with a vector flow sweeping said device. Said vector flow breaks down into a first incident flow, illustrated by the arrows marked 4, and a second flow, illustrated by the arrows marked 6, with which the active fluid in gaseous form is mixed. The combined use of the balls 2 allowing the release of the active fluid in gaseous form and of the housing 1 making it possible to configure the flow of the vector flow, while containing said balls 2, makes it possible to promote good diffusion of the active fluid.

[27] Said balls 2 have, for example, a substantially spherical, ellipsoidal and/or cylindrical shape, in particular with a diameter of between 1.5 and 4 mm.

[28] They are formed, for example, of a polymer material, preferably of a thermoplastic elastomer and even more preferably of one or more block copolymers consisting of rigid polyamide blocks and flexible polyether blocks, in particular known as trade name of PEBAX ®. As a variant, it may be, for example, EVA, cellulose, ceramic, cotton and/or wood. [29] Said active fluid comprises at least one volatile molecule, or even is formed from a volatile material.

[30] This is, for example, an odor treatment fluid such as an anti-odor fluid or a so-called white fragrance-forming fluid, that is to say having the ability to reduce the perception of certain odors, in particular odors perceived as unpleasant. In the passenger compartment of a vehicle, there may be odors of damp or musty, new, bodily, cigarettes, animals, food or other. Alternatively, said odor treatment fluid consists of a scent for disinfecting the air, reducing motion sickness, having an energizing effect, a warning effect and/or a calming effect. It can also be an aromatherapy scent and/or a perfume.

[31] Said active fluid is preferably impregnated in liquid form in said balls. It comprises, for example, less than 35%, by weight, of solvent.

[32] The amount of active fluid is between 0.5 and 3 g, preferably between 1.25 and 2 g. It represents, in particular, from 20 to 200%, or even from 40 to 60%, of the material of the balls, by weight.

[33] Said carrier stream is gaseous. This is, for example, an airflow. This is in particular a flow of air generated by a heating, ventilation and air conditioning device for the passenger compartment of the vehicle, also known by the acronym HVAC, not shown. Such an HVAC device comprises one or more blowers generating a flow of air which can be cooled and/or heated using heat exchangers at the level of a heat treatment chamber of said HVAC device, said flow flowing then in conduits to be diffused at the level of aerators in different directions, in particular in the direction of a windshield of the vehicle and/or in the direction of the occupants of the vehicle, more especially their legs and/or their face.

[34] It should be noted that such an airflow has a variable flow, depending on the user's request, such a flow being able to be modulated starting from a minimum value corresponding to a speed of approximately 0 .85 m/s. Such a speed of the air flow generally corresponds to a first active position of the HVAC device. [35] Preferably, said housing 1 is configured to be swept internally and / or externally by said vector flow.

[36] Said vector flow penetrates in this way into the housing receiving the balls 2 and licks each of the balls 2. This promotes the release of the active fluid in the housing of the housing 1, in gaseous form, in particular by desorption.

[37] Said vector flow also flows along the outer faces of the housing 2, being deflected by the latter, which makes it possible to cause entrainment of the active fluid released in gaseous form.

[38] The effectiveness of such entrainment depends on the nature, laminar or turbulent, of the flow of the vector flux around the casing 1 . For optimal training, as seen above, said housing is configured to allow flow of the vector flow which causes mixing with the active fluid released in gaseous form.

[39] More specifically, said housing 1 is advantageously sized so that the flow of said vector flow outside the housing has a Reynolds number of approximately 1000. Indeed, we then find ourselves, after the obstacle constituted by the casing 1, with a more unstable flow having characteristics located in a transition zone between flows having a wake with oscillating Karman vortices and flows having laminar boundary layers and a wide turbulent wake.

[40] For this, in the example shown, said housing 1 extends along an axis of longitudinal extension X and it has a substantially circular cross section along at least part of said axis of longitudinal extension. More specifically, it here has a circular cross section along said axis of longitudinal extension with the exception of parts provided with fixing indentations 12, 14, 16 which will be detailed below. Said housing thus has a generally cylindrical shape.

[41] Moreover, taking into account, in particular, the speed of the air flow mentioned above, said housing 1 preferably has a diameter of between 14 and 22 mm, in particular 18 mm. In this way, an optimum diffusion rate is obtained. [42] To ensure a diffusion of a satisfactory duration, one can play on the number of balls. Said balls 2 are, for example, 20 to 140 in number. Said box 2 then has a length of between 70 and 80 mm, in particular 75 mm, which gives it a size which remains small with regard to its effectiveness.

[43] According to another aspect of the invention, said housing 1 comprises a plurality of windows 8 for passage of said active fluid in gaseous form. Said windows 8 extend angularly around the axis of longitudinal extension of the housing and thus have an elongated shape.

[44] Said windows 8 are divided into two diametrically opposed rows. A first of said rows, not visible in the figures, allows the vector flow to enter the housing 1, and a second 10 of said rows, allows the active fluid released, in gaseous form, by the balls 2 to be driven by said vector flux. Said windows 8, in particular said windows 8 of the same row, are parallel to each other.

[45] They are smaller than the size of the balls in order to prevent them from coming out of the case once introduced into their housing. Said windows 8 have, for example, a length of approximately 6 mm and/or a width of approximately 2 mm. Said windows 8 of the same row are, in particular, 20 to 25 in number and/or spaced apart, in particular, by approximately 1 mm.

[46] As already mentioned above, said housing 1 also comprises at least one set of fixing indentations 12, 14, 16 allowing positioning of the housing in the vector flow.

[47] Each of said sets of indentations 12, 14, 16 is advantageously configured to allow said housing 1 to be fixed to a support so that said housing 1 is oriented transversely, in particular substantially perpendicularly, to an incident direction of said vector flow. Thus, each of said sets of indentations 12, 14, 16 allows said housing 1 to be fixed to its support so that said windows 8 are oriented transversely, in particular substantially perpendicularly, to the incident direction of said vector flux. Such an orientation of the windows 8 makes it possible to improve the good mixing of the active fluid, in gaseous form, in the vector flow.

[48] According to the illustrated embodiments, it can be seen that, according to another aspect of the invention, said housing 1 comprises at least two, here three, sets of distinct fixing indentations 12, 14, 16.

[49] Each of said sets of indentations 12, 14, 16 is configured to allow a different positioning of the housing 1 in the driving vector flow of said active fluid. With the same housing 1, the device can thus be fixed in different configurations, as shown respectively in Figures 2, 4 as well as 6 and 7. The diffusion device according to the invention thus allows it to be used on multiple media with the same enclosure 1 .

[50] As illustrated by Figures 3 and 4, one 12 of said sets of prints, said first set of prints, is configured to cooperate with a first support 18 for attachment by snap-fastening on said first support 18, to through a substrate 20.

[51] Said substrate 20 is here formed of an air filter 22. This is in particular an air filter intended to be positioned at an air inlet unit of the HVAC device mentioned more high. Said air filter 22 is formed of a material, in particular fibrous, having folds 24 parallel. Said filter 22 is fixed in a frame, not shown, itself attached to a frame of said HVAC device. Said box 1 is configured to be located in one of the pleats 24 of said filter 22.

[52] Said first support 18 forms a snap hook. The hook here has a U-shaped configuration. It comprises a base 26 and two elastically deformable arms 28. Said arms 28 are symmetrical. They extend from said base 26. A free end of said arms 28 includes a deformation 30 forming a latching rib. Said arms 28 are configured to be able to pass through the filter 22 which it pierces when the diffusion device is put in place on said filter 22.

[53] Said first set of cavities 12 comprises at least one, here two, first flats 32, formed on the surface of said housing 1 to define a latching abutment here via an edge 34 of said first flats 32, intended to cooperate with the deformation 30 of the arms 28.

[54] Said first flats 32 are located on either side of said rows of windows 8. In this way, as shown, the angular extension of the windows 8 located at their level can be identical to that of the other windows 8. Said first flats 32 are parallel to said axis of longitudinal extension of housing 1 and/or parallel to each other. They are located in a middle part of said casing 1 along its axis of longitudinal extension.

[55] The installation of the diffusion device on the filter 22 is carried out as follows. The box 1 is positioned in the chosen fold of said filter 22, on one side thereof. The hook is placed on the other side and its arms 28 pierce the filter 22 to pass through the latter. Said arms 28 then move away from each other passing at the level of the first flats 32 and then approach once their deformation 30 has exceeded the edge 34 of said first flats 32. Said deformations 30 are then in abutment against said edges 34 and the housing 1 is blocked in the fold of the filter 22, the housing 1 being snapped into the hook passing through said filter 22. It will in fact be understood that the base 26 of the hook remains on the side of the filter 22 opposite to that where is box 1.

[56] As illustrated by Figures 1 and 2, one 14 of said sets of prints, said second set of prints, comprises a slot 36, median, provided on said housing 1 so that said device can be fixed transversely to a wall 38 separating two conduits 40, 42 for the flow of said vector flow.

[57] These may be ducts from the HVAC device mentioned above, for example ducts located between its air inlet unit and the heat treatment chamber for the air flow of said HVAC device or even ducts from distribution of said air flow towards the vents.

[58] It may be noted that said housings accommodating the balls 2 are then two in number, said slot 36 separating said housings.

[59] Said housing 1 comprises transverse walls 44, closing each of said housings on either side of said slot 36. A spacing between said transverse walls 44 is advantageously provided just less than a thickness of said partition wall 28. The attachment of the diffusion device to said wall 38 is thus obtained by tight fit.

[60] Said slot 36 has a bottom 45 formed by an abutment wall, opposite an open part through which it is intended to be inserted into the wall 38.

[61] It can be seen that in the embodiment with several sets of indentations illustrated here, said slot 36 opens laterally at the level of the first flat(s) 32.

[62] The placement of the diffusion device on the dividing wall 38 is carried out by positioning itself at the level of an open end of said conduits 40, 42. Said diffusion device is positioned perpendicular to said dividing wall 38 and the slot 36 is inserted by force on a free edge of the said partition 38. The said casing 1 thus extends opposite each of the ducts 40, 42 and the active fluid can thus be diffused in each of them without having to multiply the number of enclosures.

[63] As illustrated by Figures 5 to 7, one 16 of said sets of prints, said third set of prints, comprises forms of articulation in rotation of the housing 1 in a cover 50 of opening / closing allowing whether or not the diffusion of said odor treatment fluid outside the housing 1 as a function of a relative angular position of said housing 1 and of said cover 50. Such a cover, by opening and closing the housing 1, makes it possible to better regulate the diffusion of the active fluid, avoiding that it depends only on the flow rate of the vector flow.

[64] Said cover 50 is, for example, cylindrical with a diameter just greater than that of the housing 1. Said cover 50 has an axis of longitudinal extension coincident with that of said housing 1. Said housing 1 is configured to pivot around said axis of longitudinal extension, in said cover 50, thanks to said third set of indentations 16.

[65] Said cover 50 comprises lights 52 for passing the vector flux. They are intended to leave said windows 8 free in an opening configuration of the diffusion device, allowing the diffusion of the active fluid.

[66] Said lights 52 are oriented along the axis of longitudinal extension of said housing. They have an angular span substantially identical to that of said windows 8 and/or a length corresponding to that of said rows of windows 8. They are two in number, diametrically opposed, so as to be able to correspond to said rows of windows 8 in the open configuration. In the illustrated embodiment, said slots 52 are interrupted in a central part by parts of the cover 50, in particular so as to conceal the slot 36 of the casing 1 . Said parts of the cover 50 interrupting said slots 52 may also obstruct one or more of the windows located close to said slot 36.

[67] As shown in Figure 6, depending on the angular position of the housing 1 in the cover 50, said windows 8 are not vis-à-vis the lights 52 and the diffusion device is in a closed configuration .

[68] As shown in Figure 7, after rotation of a quarter turn of the housing 1 relative to the cover 50, said windows 8 are now vis-à-vis the lights 52 and the diffusion device is in the open configuration. It thus allows the diffusion of the active fluid via the vector flow. In this configuration, it is noted that said vector flux also sweeps cover 50, internally and/or externally.

[69] Said cover 50 preferably forms part of said diffusion device. Thanks to said cover 50 which will optionally have a deliberately aesthetic configuration, said diffusion device can be offered to an end user, as a product to be mounted in the passenger compartment, whereas the two previous embodiments of the diffusion device according to the invention are more likely to be pre-assembled in the vehicle by a professional.

[70] Said device further comprises here a button 54 allowing rotational actuation of the housing 1 relative to the cover 50. Said cover 50 has a longitudinal extension axis coinciding with that of said housing 1 and it is located in the extension of one of the longitudinal ends of said housing 1, called proximal. Said button 54 thus makes it possible to cause said casing 1 to pivot around said axis of longitudinal extension. [71] Said button 54 is intended to be operated manually by a user. It optionally includes an indexing rib 55 making it possible to locate the opening/closing configurations.

[72] Said third set of indentations 16 comprises, for example, a first hinge rib 56 (best seen in Figures 1 and 3). Said rib 56 is located here at a longitudinal end of said housing 1, called distal, opposite its proximal end.

[73] Said third set of impressions 16 further comprises at least one, here two, second flats 58 (better visible in Figures 1 and 3). Said second flats 58 are configured to cooperate with complementary shapes 60, located at the level of said actuating button 54 to allow the casing 1 to be driven into the cover 50 according to said articulation in rotation.

[74] Said second flats 58 are located on either side of said rows of windows 8. In this way, as shown, the angular extension of the windows 8 located at their level can be identical to that of the other windows 8. Said second flats 58 are parallel to said axis of longitudinal extension of case 1 and/or parallel to each other. Said second flats 58 are here parallel to first flats 32. Said second flat(s) 58 are located at said proximal end of housing 1 .

[75] Said cover 50 further comprises a second hinge rib 62. It is located close to an open axial end of said cover 50. Said first and second hinge ribs 56, 62 allow the housing to slide in rotation 1 in the hood 50.

[76] Said button 54 comprises an axial stop rib 64, intended to cooperate with the cover 50, in particular said second hinge rib 62. It allows the axial locking of the button 52 in the cover 50 and subsequently the axial locking of the housing 1 in cover 50, while retaining the degree of freedom necessary for the rotation of one into the other.

[77] Said button 54 comprises axial projections 66, 68. They are here two in number, symmetrically opposed. Said axial projections 66, 68 have said complementary shapes 60, in particular at the level of an internal face said projections 66, 68, and/or said axial abutment rib 64, in particular at the level of one external face of said projections. Said inner faces of the axial projections 66, 68 are flat and/or said outer faces of said axial projections 66, 68 are rounded.

[78] Said device further comprises, optionally, a ring 80, in particular metal. Said ring 80 is located, for example, between cover 50 and said button 54 along said axis of longitudinal extension. Said ring 80 allows better sliding in rotation of button 54 against cover 50. It is also advantageously for aesthetic purposes.

[79] It may be noted that said housing 1, said cover 50, said button 54 and/or said ring 80 are coaxial.

[80] Said cover 50 further comprises means for attachment to a support. It is, for example, a clamp 70. Said clamp 70 is configured to be fixed to any support such as, in particular, an aerator grille. It is attached, optionally in a removable manner, to a base 72 of said cover. Said base 72 forms, for example, one of the parts of the cover 50 interrupting said slots 52 in their middle part.

[81] This being the case, as will have been understood, each of said sets of fixing impressions 12, 14, 16 has its own interest and a diffusion device comprising a housing 1 provided with only one of said sets of impressions fixing is also in accordance with the invention.

[82] It should be noted that said balls 2 are introduced into the housing 1, for example, through an opening located at one and / or the other of the longitudinal ends of said housing 1, said openings being closed after introductions of said balls 2.

[83] It should also be noted that the housing 1, loaded with balls 2, may be offered alone. It may also be offered with the latching hook 18 and/or with the other components 50, 54, 80 of said diffusion device in its third embodiment, for example in the form of a kit ready for assembly.

Claims

[1] Device for diffusing an active fluid, said device comprising a housing (1) defining at least one housing intended to accommodate a material configured to release said active fluid, said housing (1) comprising at least two sets of cavities fixing (12, 14, 16) separate, each of said sets of indentations (12, 14, 16) being configured to allow a different positioning of the device in a flow vector driving said active fluid.

[2] Device according to the preceding claim wherein at least one of said sets of prints (12, 14, 16) or said sets of prints (12, 14, 16) are configured to allow fixing of said housing (1 ) on a support so that said housing (1) is oriented transversely to an incident direction of said vector flux.

[3] Device according to any one of the preceding claims wherein said housing (1) extends along a longitudinal extension axis (X).

[4] Device according to the preceding claim wherein said housing (1) comprises a plurality of windows (8) for passage of said working fluid, said windows (8) extending angularly around the axis of longitudinal extension of the housing ( 1 ).

[5] Device according to the preceding claim wherein at least one of said sets of prints (12, 14, 16) or said sets of prints (12, 14, 16) are configured to allow said housing to be fixed on a support so that said windows (8) are oriented transversely to an incident direction of said vector flux.

[6] Device according to any one of the preceding claims, in which at least one (12) of said sets of impressions, said first set of impressions, is configured to cooperate with a first support (18) for attachment to said support (18), through a substrate (20).

[7] Device according to any one of the preceding claims, in which at least one (14) of said sets of indentations, said second set of indentations, comprises a median slot (36) provided on said housing (1) of so that said device can be fixed transversely to a wall (38) separating two flow ducts (40, 42) of said vector flow.

[8] Device according to the preceding claim wherein said housings are two in number, said slot (36) separating said housings.

[9] Device according to any one of the preceding claims, in which at least one (16) of said sets of cavities, said third set of cavities, comprises forms of rotational articulation of the housing (1) in a cover (50) opening / closing authorizing or not the diffusion of said active fluid outside the housing (1), depending on a relative angular position of said housing (1) and said cover (50).

[10] Device according to any one of the preceding claims further comprising, in said housing or housings, a plurality of balls (2) of a material configured to release said active fluid in gaseous form, said housing (1) further being configured to allow flow of said working fluid by mixing with said carrier flow.