FR3056404A1 - PORTABLE DEVICE FOR DIFFUSION OF ODORS - Google Patents

Abstract

The present invention relates to a portable device for diffusing odors, comprising a housing (1) enclosing at least one container (2) for storing an odoriferous liquid in fluid communication with a diffuser (3) provided with at least one membrane piezoelectric device for diffusing odors emanating from the liquid of at least one container, characterized in that it comprises means for detachably coupling the at least one container with the diffuser 3.

Description

® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number: 3,056,404 (to be used only for reproduction orders) (© National registration number: 16 59289

COURBEVOIE © Int Cl ⁸ : A 61 L 9/12 (2017.01), A 61 L 9/14

A1 PATENT APPLICATION

®) Date of filing: 09.29.16. (© Applicant (s): INO-SENS Société par actions simpli- (© Priority: trusted - FR. @ Inventor (s): MULLER CHRISTIAN and DUVALLET PATRICK. (43) Date of public availability of the request: 30.03.18 Bulletin 18/13. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ©) Holder (s): INO-SENS Simplified joint-stock company. related: ©) Extension request (s): © Agent (s): CABINET HAUTIER.

(M) PORTABLE ODOR DIFFUSION DEVICE.

FR 3 056 404 - A1 _ The present invention relates to a portable odor diffusion device, comprising a box (1) containing at least one container (2) for storing an odoriferous liquid in fluid communication with a diffuser (3) provided with at least one piezoelectric membrane for diffusing the smell of odors coming from the liquid of at least one container, characterized in that it comprises means for removable coupling of the at least one container with the diffuser 3.

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FIELD OF THE INVENTION

The present invention generally relates to the field of the diffusion of odors for the enrichment of sensory experiences in particular during the listening of music or other audio supports, or even during visual observation, in a museum or during a exhibition or show for example. These applications are not limiting.

It is intended for a device for the dissemination of odors, these odors possibly being the fragrance of perfumes.

TECHNOLOGICAL BACKGROUND

Smell is an often under-exploited sense, while odor memory is highly developed in humans and has rarely been used in devices that allow sensory experiences. Recently, however, technical progress related to electromechanics has made it possible to develop portable devices allowing the diffusion of odors. This is particularly the case thanks to miniaturized diffusers with piezoelectric membrane, exploiting the piezoelectric properties of a body (in quartz for example), to control it electrically so as to generate a vibration of the body, vibration used to nebulize an odoriferous liquid . Document US 7,622,084 is part of this framework and proposes a perfume diffuser, with piezoelectric technique, which can be integrated or added to a mobile phone. A perfume diffusion unit therein includes a piezoelectric diffuser and a perfume storage unit, a channel supplying the perfume with liquid perfume; this arrangement is not flexible in use and seeks above all to be extremely compact. The efficiency of diffusion of odors in the air can also be improved.

It is an object of the invention to at least partially overcome the drawbacks of current techniques.

SUMMARY OF THE INVENTION

One nonlimiting aspect of the invention relates to a device, preferably portable, for the diffusion of odors, comprising a housing containing at least one container for storing an odoriferous liquid in fluid communication with a diffuser provided with at least a piezoelectric membrane for diffusing the smell of odors from the liquid of at least one container.

Advantageously, it comprises removable coupling means of the at least one container with the diffuser.

Thus, the invention ensures, according to a first aspect, flexibility of use by authorizing replacement of the container in a simple and rapid manner. One can thus for example modify the configuration of the device to adapt the odors to diffuse according to the context. Preferably, several containers are also included, for an alternative or simultaneous diffusion of several odors, a large number of combinations being therefore offered.

Another separable aspect of the present invention relates to a method of diffusing odors.

Another separable aspect of the invention relates to a preferably portable device for diffusing odors, comprising a housing containing at least one container for storing an odoriferous liquid in fluid communication with a diffuser provided with at least one piezoelectric membrane of diffusion of scents of odors from the liquid of at least one container, characterized in that one face of the housing comprises at least one orifice configured to evacuate the scents of odors from the liquid of at least one container and a air passage corridor, the corridor being configured so that the air passing through the corridor is directed towards the orifice.

According to this aspect of the invention, odors are better channeled towards the user, even in highly ventilated or even windy spaces. The diffusion is more directional so avoids the interference of odors between two devices which would be operating close to each other.

BRIEF INTRODUCTION OF FIGURES

Other characteristics, objects and advantages of the present invention will appear on reading the detailed description which follows, with reference to the appended drawings, given by way of examples, nonlimiting, and in which:

- Figure 1 illustrates a schematic view of components of the invention;

- Figure 2 is a sectional view of an embodiment of the invention;

- Figure 3 shows in perspective another embodiment of the invention;

- Figure 3bis shows in section a possibility of lateral movement of a drawer, the latter being open; Figure 3c shows the example of Figure 3b but in a configuration in which the drawer is closed;

- Figure 4 shows a possibility of common support for a plurality of containers;

- Figure 5 is an alternative to the support of Figure 4 and further illustrates another form of container also visible in Figure 6;

- Figures 7 to 9 show a support in the form of a turntable in various possible versions;

- Figures 10 and 11 show another embodiment of the invention.

The drawings are given as examples and are not limitative of the invention. They constitute schematic representations of principle intended to facilitate the understanding of the invention and are not necessarily at the scale of practical applications.

DETAILED DESCRIPTION

Before starting a detailed review of embodiments of the invention, there are set out below optional features which may possibly be used in any combination or alternatively:

- a face 17 of the housing 1 comprises at least one orifice 15 configured to evacuate the smell of odors coming from the liquid of at least one container 2 and an air passage corridor 30, the corridor being configured so that the air passing through the corridor 30) is directed towards the orifice 15;

- The corridor 30 extends in a longitudinal direction from an air intake mouth 33 to an air outlet mouth 34;

- At least one orifice 15 is located at the mouth 34;

- The corridor can be attached to the body of the housing or formed in one piece with the latter, for example by monobloc manufacturing of these two elements which are then integral;

- The corridor 30 has an intermediate section between the mouth 33 and the mouth 34, the section of the intermediate section in a direction transverse to the longitudinal direction being larger than at least one of the section of the mouth 34 and the section mouth 33;

- The corridor 30 comprises two side panels 32 projecting from the face 17 of the housing 1 and a cover 31 parallel to the face 17;

- It includes a strap 14 for suspending the housing 1;

- The longitudinal direction of the strap 14 is parallel to the longitudinal direction of the passage 30, and in which the mouth 34 is located higher than the mouth 33 in a position for suspending the housing by the strap 14;

- Several containers 2 are mounted on a common support 16;

- The common support 16 is movable in translation relative to the housing 1, between a position of simultaneous coupling of the containers 2 each with a different piezoelectric membrane and a position deployed outside the housing 1;

- The common support 16 is rotatable in the housing 1, the device comprising actuating means configured to rotate the support 16 so as to place one of the containers in a coupling position with a piezoelectric membrane;

- The common support 16 comprises a disc on which the containers 2 are so that their respective longitudinal directions are directed along radii 29 different from the disc;

a wall of each container 2 has an outlet opening 12 for liquid, the containers 2 being mounted on the common support 16 so that the outlet openings 12 are in a plane parallel to a direction of movement of the support 16 and parallel to at least one liquid intake head of a diffuser 3;

- the face 17 of the housing 1 comprises several orifices 15 each configured to evacuate the smell of odors coming from the liquid of a different container 2, the corridor 30 being configured so that the air passing through the corridor 30 is directed towards the set of orifices 15;

the orifices 15 are aligned in a direction perpendicular to the longitudinal direction of the corridor 30.

- The at least one container comprises a frustoconical sealed envelope, a transverse wall of which carries a liquid outlet opening.

The use of the singular for certain elements of the invention does not necessarily mean that a given element is present uniquely in the invention. The word "one" or "one" therefore does not mean exclusively "one" or "one" respectively, unless otherwise provided.

The term "removable coupling means" means an optional mounting arrangement between two parts which is removable in normal use of the device, in particular for replacing an empty container; in particular, the removable coupling is not destructive of functional parts of the device. “Portable” is understood to mean an advantageous, non-limiting characteristic of the invention according to which the device can be of a sufficiently low weight and size to be commonly worn, by a strap around the shoulders for example, without particular discomfort during several minutes, even up to 2 hours. Preferably, the weight of the device is less than 500 grams (or even less than 300 grams) and its volume less than that of a rectangular parallelepiped of dimensions 30cmx30cmx10cm (or even less than 20cmx20cmx8cm).

Figure 1 shows schematically different components which can be integrated into a housing 1, for example in the form of a shell of thermoplastic material. The emission of odors is effected by means of a vibrating system comprising one or more diffusers with a piezoelectric membrane 3. The membrane diffusers are each capable of receiving a charge of an odoriferous liquid stored in a container 2. In in the case of the representation of FIG. 1, there are as many containers 2 as there are diffusers 3. Alternatively, a diffuser 3 can be configured to be in fluid communication with a plurality of containers 2 in an alternative manner. We can use a known diffuser technology 3. In particular, the piezoelectric membrane, when requested by the application of a potential difference between two of its parts, is set in motion. By applying an oscillatory electrical signal, preferably periodic and preferably at relatively high frequency (for example in ultrasound, at a frequency greater than 20 kHz), a vibration is maintained on said membrane, a vibration which makes it possible to distribute in very fine droplets the liquid which is brought into contact with the membrane. A very fine nebulization is thus produced in the atmosphere, at the level of an outlet orifice 15 placed downstream of the membrane. FIG. 3 gives the example of four orifices 15 each associated with a diffuser 3. It is understood that the orifices 15 can be shared in the sense that two orifices can join. Thus, an oblong hole can cover the entire emission surfaces of all the diffusers 3 without departing from the scope of the invention. In addition, several orifices of reduced size can form an orifice 15 for discharging the corona.

To control the diffusers 3 with a piezoelectric membrane, a signal processing stage 4 is moreover present in the housing 1. This stage 4 may comprise a power control device (in particular an amplifier) and a plurality of signal generators at the operating frequency of the piezoelectric membranes (it can be oscillators). At the output of the signal processing stage 4, it is possible to deliver to each diffuser 3 the electrical signal allowing the proper functioning of the piezoelectric membrane.

The signal processing stage 4 is controlled by a computer processing stage 5. The latter typically comprises at least one programmable microprocessor and a data medium, in the form of memory, allowing the storage of one or more programs computer determining the operation of the device.

These electronic, electrical or electromechanical means employ a source of energy which may be constituted at least in part by a battery 6 also preferably integrated in the housing. The battery 6 can be charged via a connector 7 (for example in the nonlimiting micro USB-Universal serial bus format) connectable to a charger 8 itself preferably receiving electrical energy from the mains. Of course, this feeding solution is not limiting or exclusive. For example, means implementing a solar energy source can also be implemented. Data can also be transferred to floor 5 via this connector 7 or another means.

In terms of device control, a button 9 is preferably formed to allow the general activation or deactivation of the device of the invention. Typically, the button 9 conditions the power supply of the computer and signal processing stages, and the launching of a root program for operating the device.

In the on position, the device can receive instructions so as to modify its operating mode; it is thus possible to trigger a broadcast, to stop it, to trigger simultaneous broadcasts or any other operating mode of broadcasters. The instructions can be produced by means of one or more control buttons 10 accessible from outside the housing. In the example of FIGS. 2 and 3, a control button 10 is associated with a diffuser 3 so as to activate it with each press. The button 10 can be replaced or supplemented by one or more other mechanical actuators, for example triggered during the relative movement of two parts. In particular, the opening of a device cover (preferably in rotation) can trigger a rod actuator.

Alternatively or cumulatively, the instructions can be received by a voice recognition system or by a radio frequency reception system. In the latter case, a remote transmitter (for example fixed to a wall of a visited building, or a portable electronic device such as a Smartphone) addresses instructions to the device of the invention. Any communication format can be used, in particular according to Wifi and Bluetooth standards. FIG. 1 schematizes this solution with an external control 11 which cooperates with a control input stage 11a serving as a receiver in the housing 1. This stage 11a can send a signal to the computer processing stage 5.

In addition, the computer processing stage 5 can itself embed instructions sufficient to trigger operating cycles of the diffuser (s) 3 when the device is switched on. For example, a broadcast cycle from a plurality of diffusers 3 can be preprogrammed.

The device of the invention can incorporate other functionalities, in particular sound reproduction. For this purpose, it may include an audio jack 13 for the connection of a headset. Additional means of sound generation are then integrated into the device (storage of audio data such as music, adapted signal processing device). Equivalently, the device can include a video system with a screen embedded on the device or connectable to the latter. Obviously, the device of the invention advantageously takes advantage of the diffusion of odors, this term being understood in the broad sense as including in particular perfumes or other fragrances, during sound or video restitution. Thus, the control of the diffuser (s) 3 can be coordinated with audio or video operating phases.

In general, the box 1 includes a space for housing one or more containers 2. Due to the piezoelectric operation, the odors are stored in a liquid vector inside the containers 2. An example of arrangement is visible. in Figure 2 at which the diffusers have not been voluntarily shown so as to better reveal the incorporation of containers 2 in the housing. In this example, the containers 2 have a main body whose internal volume ensures the storage of the perfumed liquid. A plug portion covers the body and includes an outlet 12 allowing fluid communication with the corresponding diffuser 3. Advantageously, the outlet 12 is equipped with a valve so as to allow only the outlet of the fluid. Advantageously, the outlet 12 is surrounded by a seal, for example circular, surrounding the outlet 12, making it possible to operate a seal during a relative contact between a surface of the diffuser and the wall of the container 2 carrying the outlet 12. In the case shown, the cap of the container 2 is of rectangular parallelepiped shape and carries the outlet 12 on one of its lateral faces. The diffuser 3 preferably comprises in this case a flat area provided with a liquid intake head capable of coming into facing and in contact with the pan of the container 2 carrying the outlet 12. It is thus possible to put in communication fluid outlet 12 and said head.

Optionally, a removable film can protect the outlet 12 before use.

In the example of FIG. 2, the containers 2 are fixed individually each relative to a diffuser 3 in the housing 1. Preferably, this fixing is carried out by removable coupling means not shown in this figure. In particular, the diffuser 3 may comprise two sides (one of which carries the intake head) made in parallel and facing one another so as to produce a vice effect on the two opposite portions of the container cap. 2. It is understood that the containers 2 thus fixed can be easily disassembled and replaced.

FIG. 3a gives an alternative in which a common support 16 is used to carry the different containers 2. In this embodiment, the support 16 functions like a drawer with mobility in relative translation with the housing so as to pass between a position in which the drawer is retracted into the interior volume of the housing 1 and a position in which the drawer is deployed outward to make the containers 2 accessible to the user who wants to operate their maintenance. Preferably, the containers 2 are immobilized in the drawer. Side stops can be used for this.

Preferably, the retraction movement of the support 16 in the housing is configured to place the outlets 12 of the containers 2 opposite each of an intake head of a diffuser 3.

In FIG. 3a, two slides equip the opposite sides of the support 16 and extend in the sliding direction of the support 16; guide surfaces equip the housing 1 in a corresponding manner so as to provide translational guiding of the support 16. Advantageously, the translational guiding means of the support 16 are configured to bring the outlets 12 of the containers 2 closer to the intake heads of the diffusers. Thus, the slides can be inclined relative to the longitudinal direction of the support 16 (by an angle marked a in FIG. 3c and which is for example from 1 to 5 ° and in particular 3 °) so that the support rises slightly in direction of the heads of the diffusers when the support 16 is retracted into the housing body. Figures 3b and 3c show this embodiment.

FIG. 4 gives a variant of support 16 in the form of a bar provided with a plurality of notches 19 each cooperating with a portion of a container 2 so as to maintain it in position on the support 16. In this figure, the container 2 comprises a bottle 21 forming the liquid storage body and a stopper 20 provided with the liquid outlet 12 as above. Below the stopper 20, a neck 22 in this case ensures cooperation with the notch 19. For example, the neck 22 has two opposite planar and parallel walls guiding the container 2 in the slide formed by the notch 19. The in this case, the box includes means for fixing the bar forming the support 16 in its internal volume.

FIG. 5 shows another variant with a support 16 also in the form of bars but provided with a plurality of holes 23 each intended to receive a container 2, the latter in this case comprising an envelope 24 and a flange 26 forming a stop during insertion into hole 23.

In these versions, it is preferably by a translational movement towards the inside of the housing 1 that the support 16 is placed in position so as to make the plurality of containers 2 cooperate with the plurality of diffusers 3.

FIG. 6 gives a more detailed example of the shape that the container 2 can take in the case of a capsule. This capsule is for example of metallic material, such as aluminum or also of plastic material. It comprises a frustoconical envelope 24 extending between a small base and a large base provided with a rim 26. The capsule can be pierced during the positioning at the level of the liquid intake head present on the diffuser 3 or present an output 12 equivalent to that previously exposed.

Figures 7 to 9 show embodiments providing rotational mobility to the support 16. In the case of Figure 7, capsules form the containers 2 in particular adopting the shape described with reference to Figure 6. The support 16 is here a disc having a plurality of holes 23 each capable of receiving a container 2. In the center of the disc, a coupling hole 27 allows the support 16 to be associated with actuation means in rotation comprising for example an electric motor and a output shaft couplable to the support 16. A keying can allow the coupling in rotation and the indexing of the disc relative to the actuation means in rotation. In this configuration, the device of the invention preferably comprises only one diffuser 3 and the rotation of the support 16 is configured to selectively bring one of the containers 2 to the view of the diffuser 3 to ensure their cooperation and the diffusion of 'aromas of odors from the liquid contained in the selected container 2.

Figure 8 shows a configuration functionally similar to that of the previous figure. However, the containers 2 are, in this example, of the type presented with reference to FIGS. 2 to 4. The containers 2 are fixed to the rotary support 16 by any means (not shown).

Figure 9 gives a top view of a variant of Figure 7 (but can be transposed in the case of Figure 8) with a coupling hole 27 of larger size and the diagram of the center of rotation 28 of the disc forming the support 16. The spokes 29 represent the angular directions which can be taken by the support 16 by means of actuation in rotation so as to come to place the container 2 desired opposite the diffuser 3. Preferably, the containers 2 are arranged on the support 16 in a regularly distributed manner and are angularly spaced by a fixed angle.

The examples given above demonstrate that it is possible, thanks to the invention, to deliver a plurality of odors from a plurality of containers under variable conditions. Certain embodiments favor the ability to deliver either successively with great dynamism, or simultaneously, different odors from liquid contained in different containers 2. Other embodiments share the diffusers 3 for several containers 2 and allow the successive delivery of a plurality of odors, potentially in large numbers. On the latter; the examples given above are schematic and many more containers can be included in the embodiments previously presented without departing from the scope of the invention.

In particular, when it comes to capsules, the containers 2 can be small.

Figures 10 and 11 show another separable aspect of the invention in which the device is equipped with a corridor 30 promoting the directionality of the fragrance emitting emissions. Indeed, a preferred application of the invention is the equipment of an individual user so that he can benefit from the olfactory sensory rendering of the device without however widely diffusing the odors through a space, for example through 'a complete room in a building. This does not exclude that people placed near the user wearing the device of the invention may benefit from the olfactory rendering. However, one aspect of the invention seeks to avoid too isotropic diffusion of odors. In this context, the corridor 30 proposed makes it possible to favor a direction of the air flow through which the odors are diffused after their emission by the diffuser (s) 3.

FIG. 10 shows the presence of the corridor 30 preferably delimited by walls defining a duct in which a preferred direction of the air can be applied. In the case of FIG. 10, the wall comprises a cover 31 forming a surface delimiting the corridor 30, here essentially parallel to the face 17 of the housing 1, at the level of which is the orifice or orifices 15 for diffusing odors. In the example, the width of the cover 31 is equivalent to that of the face 17. However, a narrower width is possible, for example if we want to dedicate the corridor to an individual orifice 15, while the figure shows a corridor 30 unique for all of the orifices 15. Preferably, the corridor 30 is delimited by continuous surfaces along its longitudinal dimension. Thus, the cover is preferably a solid wall. To define the height of the corridor, side walls 32 are also arranged. In the example, they are parallel and each located near an edge of the face 17 comprising the orifices 15. Likewise, it is advantageous for the walls 32 to be full. In the case of Figure 10, the side walls 32 extend along the height dimension of the housing.

Preferably, the corridor 30 extends in a longitudinal direction which corresponds to the long dimension of the housing 1. In addition, it is desirable that the longitudinal direction of the corridor 30 corresponds to the vertical (or that it has a vertical component for least non-zero) in normal use of the device. Indeed, the device is advantageously carried by the user below the level of his head so that it is desirable to favor a vertical air flow directed upwards. Corridor 30 is not necessarily rectilinear and the longitudinal direction of corridor 30 is understood to mean the long dimension of the air flow which occurs there.

The corridor 30 comprises a mouth 33 by which the air intake preferably operates, and a mouth 34 by which the air outlet preferably operates from the corridor 30. As shown in FIG. 11, we can try to vary the pressure through the corridor 30 by varying the section of the latter along its longitudinal direction. For example, the mouth 33 may have a cross section greater than the rest of the corridor, so as to favor the admission of air over a large entry surface. An increase in section can also occur at the mouth 34, for example to create a low pressure effect relative to a more restricted area towards the center of the corridor 30, as shown in FIG. 11. Thus, the cross section of the corridor perhaps decreasing in a first section from the mouth 33 then increasing in a second section to the mouth

34. For example, the variation in section can be between 20 and 60% along the corridor 30. Preferably, the cross section of the corridor is rectangular.

Thanks to the air flow produced in the corridor 30, the emanations from the diffusers 3 take a preferred direction in the direction of the air flow. It is therefore necessary to place the orifice (s) 15 concerned so that they interfere with the air flow. The orifice (s) 15 can be located inside the corridor 30. They can also be located near the corridor 30, either upstream of the mouth 33, or downstream of the mouth 34. Preferably, the orifices 15 are located at the mouth 34 that is to say after the air flow has been created by the corridor 30. It is meant by "located at the level" the fact that the orifices 15 are at the right of the mouth 34 or slightly downstream of said mouth 34 while benefiting from the air flow created by the passage 30. In a complementary or alternative manner, the expression "located at the level" means the placement of the orifices 15 more or less 3 cm downstream or upstream of the mouth 34. An advantage of the placement of the orifices 15 at this level and that if the vaporization of the odorous liquid is not complete at the outlet of the diffusers 3 the projected residual liquid will soil less or not the wall of the corridor 30.

A strap 14 advantageously equips the device so as to facilitate its gripping and its support by the user. The strap 14 allows for example to wear the device around the neck. Two ends of the strap 14 are fixed to opposite sides of the housing by any common means. Preferably, in the case of the embodiment where the device comprises a passage 30, the strap 14 is configured to favor the orientation of the device so that the longitudinal direction of the passage 30 adopts a vertical orientation or close to the vertical, with the mouth 34 of the corridor 30 situated more in height than the mouth 33. Thus, the emanations diffused by the device naturally reach the nose of the wearer of the latter.

Unless otherwise specified, technical characteristics described in detail for a given embodiment can be combined with technical characteristics described in the context of other embodiments described by way of example and not limitation, including those explained in detail below. above. The aspects of the invention described can nevertheless also be implemented each separately.

REFERENCES

1. Housing

2. Container

3. Diffuser

4. Signal processing stage

5. Computer processing stage

6. Battery

7. Connector

8. Charger

9. Button

10. Command button

11. External control / 11 a. entrance floor

12. Exit

13. Audio jack

14. Strap

15. Port

16. Common support

17. Face

18. Side pan

19. Notch

20. Stopper

21. Bottle

22. Col

23. Hole

24. Tapered envelope

25. Cross wall

26. Ledge

27. Coupling hole

28. Center of rotation

29. Department

30. Corridor

31. Cover

32. Side panel

33. Mouth

34. Mouth

Claims (15)

1. Portable odor diffusion device, comprising a housing (1) containing at least one container (2) for storing an odoriferous liquid in 5 fluid communication with a diffuser (3) provided with at least one piezoelectric membrane for diffusing the smell of odors from the liquid of at least one container, characterized in that it comprises removable coupling means from to at least one container with the diffuser 3. 2. Device according to the preceding claim, in which one face (17) of the housing (1) comprises at least one orifice (15) configured to evacuate the smell of odors coming from the liquid of at least one container (2) and an air passage passage (30), the passage being configured so that the air passing through the passage (30) is directed towards the orifice (15). 3. Device according to the preceding claim, wherein the corridor 15 (30) extends in a longitudinal direction from an air intake mouth (33) to an air outlet mouth (34). 4. Device according to the preceding claim, wherein the at least one orifice (15) is located at the mouth (34). 5. Device according to one of claims 3 to 4, wherein the corridor 20 (30) has an intermediate section between the mouth (33) and the mouthpiece (34), the section of the intermediate section in a direction transverse to the longitudinal direction being greater than at least one of the section of the mouthpiece (34 ) and the mouth section (33). 6. Device according to one of claims 2 to 5, wherein the corridor 25 (30) comprises two side panels (32) projecting from the face (17) of the housing (1) and a cover (31) parallel to the face (17). 7. Device according to one of the preceding claims, comprising a strap (14) for suspending the housing (1). 8. Device according to the preceding claim in combination with 30 one of claims 3 to 5, in which the longitudinal direction of the strap (14) is parallel to the longitudinal direction of the passage (30), and in which the mouth (34) is located higher than the mouth ( 33) in a position for suspending the housing (1) by the strap (14). 9. Device according to one of the preceding claims, comprising several containers (2) mounted on a common support (16). 10. Device according to the preceding claim, wherein the common support (16) is movable in translation relative to the housing (1), between a 5 position for simultaneous coupling of the containers (2) each with a different piezoelectric membrane and a deployed position outside the housing (1) · 11. Device according to claim 9, in which the common support (16) is rotatable in the housing (1), the device comprising actuation means configured to rotate the support (16) so as to place one of the containers (2) in a coupling position with a piezoelectric membrane. 12. Device according to the preceding claim, in which the common support (16) comprises a disc on which the containers (2) are so as to 15 that their respective longitudinal directions are directed along radii (29) different from the disc. 13. Device according to one of claims 9 to 12, in which a wall of each container (2) has an outlet opening (12) for liquid, the containers (2) being mounted on the common support (16) so that has 20 the outlet openings (12) are in a plane parallel to a direction of movement of the support (16) and parallel to at least one liquid intake head of a diffuser (3). 14. Device according to one of claims 2 to 8 in combination with one of claims 9 to 13, wherein the face (17) of the housing (1) comprises 25 several orifices (15) each configured to evacuate the smell of odors from the liquid of a different container (2), the passage (30) being configured so that the air passing through the passage (30) is directed towards the 'set of orifices (15). 15. Device according to the preceding claim, wherein the orifices 30 (15) are aligned in a direction perpendicular to the longitudinal direction of the corridor (30). 1/6