FR3060717B1 - DEVICE FOR TREATING THE AIR - Google Patents

Abstract

The invention relates to an air treatment device 9 comprising a device 10 for driving the air through the treatment device 9 and a liquid sprayer 12 such that droplets of said atomized liquid 26 agglomerate. with particles carried by the incoming air and entrained in the treatment device 9, characterized in that the sprayer 12 comprises a turbine 62.

Description

DEVICE FOR TREATING THE AIR

The invention relates to an air treatment device from outside, for supplying an enclosure or a heating installation, air conditioning and / or ventilation of an enclosure such as a passenger compartment of vehicle.

It is known from document FR2781725 to have a device for filtering the outside air upstream of an air conditioning and / or heating system. The filtering device comprises a band-pass system, a board-shaped dust filter and an activated carbon odor filter which are passed in series by the air coming from the outside of the vehicle when the fan is in operation and generates the suction and the crossing of the filters by the outside air before supplying the air conditioning and / or heating system.

Unfortunately, the higher the concentration of particles in the air, the more the filters will get dirty quickly and therefore the more it will induce a pressure drop that affects the performance of the heating / air conditioning system. In environments highly polluted with unwanted particles, vehicle drivers are therefore forced to frequently replace each clean-up filter, which generates a regular cost and a waste of time (because of the time spent to make an appointment in a service after-sales, then to bring and go search the vehicle, not counting the downtime).

It is known from JP2006068690 to separate the air particles by taking advantage of the centrifugal force generated by a centrifuge, and force undergone by humidified outside air prior to its penetration into the housing of the centrifuge. When the fan 22 is running, the outside air passes through a shower curtain of water droplets sprayed from the pipe 24b. The outside air is moistened by a sprayer outside the centrifuge, particles agglomerate with water droplets under the shower curtain and then penetrate tangentially into the top of the housing. It seems that the axis 28 rotates the cone 40. The outside air has been previously moistened, is then rotated. The droplets of water by their weight are projected by centrifugation on the walls of the cone 40, which serve as dehumidifier. The purified outside air then enters through the suction duct 32 of the fan and springs tangentially towards an enclosure. The heavier water droplets being projected, they carry with them the agglomerated particles along the walls of the cone 40. The element 42 seems to be used to scrape the walls of the cone 40. The droplets flow along the walls of the cone 40 to the water tank outside the housing. And previously agglomerated particles become free and fall back under the gravitational effect in a dust tank 44. The purified air in the housing of the centrifuge then rises in the pipe 26c of the fan which serves to evacuate to the 'pregnant. The effectiveness of the filtering device depends on the agglomeration of the particles with the droplets. However this agglomeration occurs only in the humidification zone and since the humidification is carried out by spraying in the form of a shower, the humidification is done in the shower area which is very small. Droplets only encounter particles on a limited path and it is likely that some droplets will not agglomerate with any particles before falling back. The humidification of the outside air being carried out outside the centrifuge, the particles can also be separated from the droplets again before entering the housing because of the length of the pipe 19. Moreover, the implantation of the The system is complex and requires the installation of each component: centrifuge, spray in the form of a shower curtain ... and their connections. It is necessary to provide a large free volume to be able to implement the pre-filtering device upstream of the heating and / or air conditioning system while the environment under the hood is already very densely occupied.

According to the invention, these problems are solved by providing a more compact filtering device and with a better efficiency by increasing the agglomeration of air particles from outside with a liquid in a state promoting agglomeration.

More specifically, the invention therefore relates to an air treatment device comprising a device for driving air through the treatment device and a liquid spray such as droplets of said sprayed liquid s' agglomerates with particles carried by the incoming air and entrained in the treatment device and whose sprayer comprises a turbine. The turbine of the running sprayer turns the liquid into droplets of varying degrees of fineness. These droplets are rotated under the effect of the sprayer and immediately available to be agglomerated by centrifugation with particles present in the air entering the treatment device. Thus the risk of dissociation of particles and droplets between the sprayer and the centrifuge is reduced.

[0007] Preferably, the invention relates to an air treatment device whose air drive device is coaxial with the first turbine. Thus the axes of rotation are merged, there is a greater proximity between the fan and the turbine which increases the efficiency of the enema by suctioning the purified air closer to its genesis, and the compactness of the treatment device . It is possible to pool the rotational elements of the propeller fan and the turbine of the sprayer, providing a lightening of the treatment device.

Preferably, the invention relates to an air treatment device which comprises a housing connected to an air inlet of the fan, comprising the sprayer and an air inlet at the bottom of the housing extended by a duct. tubular coaxial with said turbine, and said turbine having a bell shape with a clamp covers said duct without touching it, and has a hub with days at said clamp opposite said duct. Thus the treatment device does not leave outside air prefiltered penetrated into the installation. In addition, this configuration makes it possible to take advantage of the effect of gravity on the particles to harvest them at the bottom of the case.

Preferably, the invention relates to an air treatment device which said turbine has inside its hub portions of pale. These portions of pale participate in the suction of the outside air to enter the conduit. They make it possible to increase the flow rate of the outside air treated without increasing the volume of the drive device, without making the treatment device more cumbersome, or even lightening it since they exploit the rotation equipment of the bell turbine that is already present. .

The invention also relates to an air treatment device which has a supply and a liquid purge of the sprayer. There is no stagnation of the liquid in the sprayer, thanks to a renewal of the liquid. The fluid available in the vehicle and intended for other uses may also be used for the operation of the treatment device. It is also possible to provide an easier access tank to bring the amount of liquid required level.

The invention also relates to an air treatment device whose housing has a feed hole and purge. Thus there is pooling of certain elements to supply and purge the treatment device. This lighten the treatment device.

The invention is described in more detail below and with reference to Figures 2 to 6 schematically showing the air treatment device in its preferred embodiment, Figure 1 having the prior art of a the installation of heating, air conditioning and / or aeration / ventilation on board a vehicle.

Figure 1 shows a view of the heating system, air conditioning and / or ventilation / ventilation implanted under the hood of a vehicle.

Figure 2 shows a view along a cross section of the air treatment device made according to a preferred embodiment of the invention without immersion liquid.

Figure 3 shows a view of the routes of air through the air treatment device according to a preferred embodiment of the invention.

Figure 4 shows a view of the turbine-bell of the device according to a preferred embodiment of the invention.

Figure 5 shows an instantaneous view according to a cross section of the treatment device made according to a preferred embodiment of the invention illustrated in Figure 2 with the bell turbine shown in Figure 3 partially immersed in liquid and in operation.

Figure 6 shows an air treatment device with a liquid supply according to a preferred embodiment of the invention.

Figure 1 illustrates a partial perspective representation of the front area of a vehicle equipped with a facility 1 for air conditioning, heating and / or aeration / ventilation already known to control the air temperature to inside the enclosure 2 or the ventilation of the enclosure 2, which represents the passenger compartment 2 occupied by the passengers of the vehicle. The passenger compartment 2 and the front block 3 are separated by a front wall 4 and the windshield not shown, separates the passenger compartment 2 from the outside environment to the vehicle. In the area of the foot 5 of the windshield and under the hood 6, is positioned a facility 1 for heating, air conditioning and / or aeration / ventilation. The outside air for the passenger compartment 2 enters the front block 3 through the grille 7 of the canopy. It is channeled to a filter 8 in the form of screen not shown to enter the installation 1 for heating, air conditioning and / or aeration / ventilation before being distributed in the passenger compartment 2 by unrepresented nozzles.

It is visible that the available space is very limited in the front block 3 and it is imperative to have a filtration treatment device 9 which is compact.

Figure 2 shows a view of the air treatment device 9, of generally cylindrical shape in a longitudinal section through the axis of revolution of the cylinder.

The air treatment device 9 has a device 10 for driving the air, a centrifuge 11 and a sprayer 12.

The device 10 for driving the air comprises a fan 13.

The fan 13 is enclosed in a casing 14 of cylindrical shape with an inlet 15 of axial air and a tangential air outlet 16. The casing 14 is made in two upper and lower half-shells 17 17 which meet in a cross section of the cylinder. The air circulates in the casing 14 and approaches the outlet 16 between the two half-shells 17 and 18 to be expelled tangentially relative to the cylinder of the casing 14.

The treatment device 9 comprises a centrifuge 11 which filters the heavier bodies by centrifugation and which is enclosed in a housing 19 of generally cylindrical shape, coaxial with the housing 14 of the fan 13. The housing 19 has a narrowing 20 to its top near the casing 14, narrowing 20 through which the air will exit the housing 19. At its base 21, the housing 19 has an inlet 22 of outside air. This air inlet 22 is centered relative to the cylinder of the housing 19 and has a diameter much smaller than that of the cylinder itself shrunk. The air enters the housing 19 through the air inlet 22 which is coaxial with the axis of revolution of the housing 19. The housing 19 is also equipped at its base 21 with a deflector 23. The deflector 23 is a disc 24 connected to the base 21 by three studs 25.

The outside air thus passes through the interstitial space between the pads 25, the disk 24 and the base 21 of the housing 19. Thus, the outside air does not enter directly into the inlet 22 of the housing 19 but after have walked tangentially to the base 21 of the cylindrical housing 19.

The housing 19 does not contain any liquid 26 in this FIG. 2.

The fan 13 comprises a motor 27 connected to a drive shaft 28. The upper half-shell 17 of the casing 14 has a recess 29 to accommodate the motor 27 resting on the outer surface of the upper half-shell 17 of the casing 14 and an orifice 30 to partially pass the motor 27 extended by the shaft 28 training. A motor cover 31 is assembled to the outer surface of the upper half-shell 17 to hide the motor 27. The drive shaft 28 is then associated with the propeller 32 of the fan 13 before the assembly of the second half -coque, lower half-shell 18. The two half-shells 17 and 18 are joined to each other on their perimeter by clipping in a tangential direction. The propeller 32 of the fan 13 is held between the two half-shells 17 and 18 and driven in rotation by the drive shaft 28 during operation of the motor 27.

The lower half-shell 18 of the housing 14 has an opening 33 which is traversed by the drive shaft 28 The opening 33 is wide enough to constitute the air inlet 15 of the fan 13.

The fan 13 is then fixed on the housing 19 by clipping the periphery 34 of the opening 33 of the lower half-shell 18 of its housing 14 in the narrowing 20 of the housing 19. The drive shaft 28 extends inwardly of the housing 19.

The opening 33 is vis-à-vis the shrinkage 20 so that the propeller 32 sucks the air from the housing 19, the opening 33 is the outlet for air from the housing 19.

The housing 19 encloses a tubular conduit 35 on the bottom 36 of the housing 19 and a turbine 37 such as a bell above the duct 35.

The tubular conduit 35 extends inwardly of the housing 19 from the air inlet 22 to the base 21 of the housing 19.

The bell-turbine 37 consists of a brain 38, a body 39 and a clamp 40 according to a commonly accepted definition for a bell. The bell turbine 37 is attached to the drive shaft 28 at its brain 38 and is open at the clamp 40, and it covers the conduit 35 as a bell hanging above.

The bell-turbine 37 has a conical shape that narrows from its brain 38 to the clamp 40, which will be closest to the bottom 36 of the housing 19 and surround the conduit 35. The bell-turbine 37 is closed by a circular support 41 at its brain 38. The support 41 is traversed by the drive shaft 28 to which the bell turbine 37 is fixed so that the bell-blower 37 is suspended in the housing 19 by the drive shaft 28, without touching the conduit 35. The passage of the support 41 by the shaft 28 is made hermetically to limit the loss of loads of the aspirations with the usual sealing means.

The bell turbine 37 is rotated by the drive shaft 28 passing through the housing 14 of the fan 13, around the tubular conduit 35.

At the base 21, the disk 24 and the pads 25 of the deflector 23 are made of material. The studs 25 penetrate into cavities 42 present on the base 21 in order to assemble the base 21 and the deflector 23.

In Figure 3, here we describe two routes pursued by the air from outside, in the treatment device 9 towards the enclosure 2 in the absence of obstacles (obstacle that we will explain later). The main route is represented by the arrow 43, the bis, minority route is distinguished from the main route within the housing by the bypass 44.

The outside air travels along the arrow routes 43 and 44, through the treatment device 9 penetrating through the interstitial space between the deflector 23 and the base 21, then entering through the air inlet 22 at the base 21 in the conduit 35 of the housing 19. The outside air is guided by the duct 35 towards the interior of the bell-tower 37. Then the air occupies the space between the duct 35 and the clamp 40 of Bell Turbine 37. Then the air sneaks into the passages in Bell Turbine 37 itself is the main flow of the boom 43, and minority passages according to the bypass 44 between the Bell Turbine 37 and the bottom 36 of the housing 19. It is then found in the space of the housing 19 surrounding the duct 35 and the bell-tower 37. The air present in this space, enters the fan 13 through the inlet 15 air, it passes through the air entrainment device 10 to lead to the e nceinte 2.

The fan 13 in operation sucks the air present in the housing 19 and projects it tangentially between the two half-shells 17 and 18 of the housing 14 and discharges it to the air outlet 16 tangential to the casing 14 to the enclosure 2.

Figure 4 shows the bell turbine 37 alone in perspective. The body of the bell-turbine 37 is composed of a hub 45 and blades 46.

The hub 45 is conically shaped with an upper edge 47 which has the largest diameter, a lower edge 48 which has the smaller diameter and an intermediate edge 49 which has a diameter of intermediate dimension between the smaller diameter and the largest diameter. Between the upper edge 47 and the intermediate edge 49, the hub 45 is solid, this completely solid part is designated by the term "skirt" 50. Between the intermediate edge 49 and the lower edge 48, the hub 45 is hollowed out, but there is enough material to connect the lower edge 48 and the intermediate edge 49. The blades 46 are used for this in this preferred embodiment. The hub 45 is perforated, the days 51 constitute passages along the main route 43 between the space in the heart of the bell-tower 37 and the space around the bell-tower 37.

The hub 45 is closed on the side of the upper edge 47 by the support 41 circular. The circular support 41 protrudes radially from the upper edge 47 thus forming a flange 52. The hub 45 is open on the side opposite to the support 41, at the level of the clamp 40. The support 41 is located at the level of the turbine brain 38 -lock 37.

The bell turbine 37 has blades 46 which are evenly distributed around the hub 45. Each blade 46 comprises an inner portion 53 present inside, in the heart of the hub 45 and an outer portion 54 present on the outside. of the hub 45. In the same cross section relative to the hub 45, the inner portion 53 and the outer portion 54 of the same blade 46 extend on either side of the hub 45 in the form of a circular arc with the same radius of curvature. Each pale 46 extends from the upper edge 47 to the lower edge 48, from the brain 38 to the clip 40.

The inner portion 53 of each blade 46 has a bevel cut 55 which tapers as the approach of the lower edge 48. The width present inside the hub 45 of a light 46 decreases as the bottom edge approaches 48.

FIG. 5 shows an instantaneous cross-sectional view of the device 9 previously described with a quantity of liquid 26 in the housing 19. The section is made in a vertical plane passing through the shaft 28 for driving in rotation of the turbine 37 but not passing through the blades 46 of the bell turbine 37. FIG. 5 shows an instantaneous view of the treatment device 9 in operation after a time sufficient to reveal a surface of the liquid 26 in the form of a siphon 56. shape is obtained after a certain time of operation. We consider that this figure 5 presents the extreme state of centrifugation of liquid 26.

The bell turbine 37 can be broken down into four zones: a first zone 57 corresponding to the outer portions 54 of the blades 46, which are emerging, a second zone 58 corresponding to the outer portion 54 which is immersed, a third zone 59 corresponding to the inner portion 53 which is immersed, and a fourth zone 60 corresponding to the inner portion 53 which is emerged.

The rotation of the bell-turbine 37 triggers the rotation of the blades 46 which move the liquid 26 in their submerged zones 58 and 59 and the air in their emergent regions 57 and 60.

The liquid 26 then reacts to the centrifugal effect. The liquid 26 is distributed in the housing 19 to form a siphon 56 at first. The liquid 26 has a surface that adopts an elliptical shape. The liquid 26 partially immerses the duct 35, the bell-tower 37 and the internal walls of the casing 19. In the extreme state of centrifugation, the position of the liquid 26 wets the duct 35 to a level called minimum level of rotation and wets the inner walls of the housing 19 to a maximum height. Bell turbine 37 is partially submerged.

The position of the liquid 26 at the hub 45 and the blades 46, is at a height relative to the bottom 36 of the housing 19 less than that of the intermediate edge 49. As a result, the days 51 are partially emerged and there is a passage for air between the intermediate edge 49 and the height of the liquid 26 emerges so that the air circulates from the heart of the bell turbine 37 towards the space between the bell-blower 37 and the casing 19.

In comparison, when the bell-turbine 37 is no longer in rotation and the liquid 26 in sufficient quantity for the spraying, is in its state étale, static or rest, the surface of the liquid 26 is flat and the the height of the liquid 26 relative to the bottom 36 of the housing 19 is between that of the intermediate edge 49 and that of the top of the duct 35. The days 51 are completely immersed. There is therefore no exit for the air entering from the duct 35 in the heart of the bell turbine 37. This represents an obstacle to the passage of the centrifuge 11 by the outside air because the air having penetrated through the duct 35 can not be removed from the bell turbine 37 closed by the total immersion of the days 51 in the liquid 26. This also ensures that there is no air from the outside which is not filtered since it does not pass through the centrifuge 11 as the centrifugation state without air passage is not reached.

To return to the operation of the filtering by centrifugation, the rotation of the liquid 26 is facilitated by the beveled shape 55, the reduction of the width of the inner portion 53 of the blades 46 at the clamp 40, in the vicinity the lower edge 48 of the hub 45. In fact, this reduction of the immersed surface of the bell turbine 37 contributes to the creation of the cyclonic shape of the siphon 56, and to reduce the resistance to the movement of the blades 46 in the liquid 26. Thus it is possible to have a motor 27 less powerful once centrifugation of the immersion liquid 26 initiated, the power of the motor 27 having to overcome mainly the resistance of the air on the movement of pale 46 emerging.

Once the cruising speed reached for the bell turbine 37, the liquid 26 undergoes the centrifugal force exerted by the rotation of the second zones 58, the water trap 56 is formed and droplets 61 appear between the turbine. bell 37 and the housing 19. The second zones 58 of the blades 46 act as turbines creating the water droplets 61 not shown, sprayed. The liquid is not yet in a state of centrifugation with passage of air through the days 51.

Then the days 51 are discovered by the liquid 26. The blown air of the bell-turbine 37 having passed through the bell-turbine 37 by the days 51 is then projected into the space between the housing 19 and the Bell turbine 37 above the siphon 56. The blown air evolves in the same space as the droplets 61 not shown. The first zones 57 of pale 46 stir the air and the droplets 61 entrained in a cyclone, a tourbillon not shown. The unrepresented particles transported by the blown air meet the droplets 61. There is agglomeration of the particles, including undesired particles with the droplets 61. The agglomeration phenomenon appears. The first zones 57 serve to drive the droplets and the air in a vortex that project them outward.

The second areas 58 of the blades 46 play the role of the blades of the first turbine 62 of the sprayer 12, the first turbine 62 of the treatment device 9. The sprayer 12 is housed in the housing 19.

The first zones 57 of the blades 46 stir what is present in the space between the housing 19 and the turbine bell 37 above the siphon 56. They play the role of the turbine of the centrifuge 11 which filters the The heaviest corpuscles by centrifugation, they act as the second turbine 63 of the device 9. The air present and the droplets 61 undergo centrifugation.

The outer portions 54 of the blades 46 are used to spray the liquid 26 or to centrifuge according to the immersion height of the blades 46.

The first turbine 62 of the sprayer 12 and the second turbine 63 of the centrifuge 11 are not only coaxial and driven by the same shaft 28, but above all they are well grouped in the bell-turbine 37. The turbine-bell 37 brings together the turbine 62 of the sprayer 12 and the turbine 63 of the centrifuge 11.

The rotation of the bell-turbine 37 also triggers the rotation of the internal portions 53 of the blades 46. The rotation of these internal portions 53 emerging from the fourth zone 60 of the blades 46 has the main effect of sucking the outside air that will penetrate inside the housing 19 by the days 51 unveiled by the siphon 56 created. These fourth rotating zones 60 behave like a third turbine 64. This can complete the suction of the outside air through the treatment device 9 by putting into operation the fan 32 of the fan 13. It is possible to reduce the power of the motor 27 driving the treatment device 9. The bell-turbine 37 thus gathers the turbines of the sprayer 12, the centrifuge 11 and the air-entrainment device 10. The centrifugal force of the second turbine 63 projects the heaviest particles and droplets 61 onto the walls of the housing 19 or on the cone of the siphon 56. The particles associated with the droplets 61 are also projected. The droplets 61 not loaded with particles continue to be entrained by centrifugation. This increases the chance that they will encounter still lonely particles. This improves the enema effect of the particles present in the air coming from the outside, with a stirring amplified by the liquid droplets 61 present within the housing itself 19.

The droplets 61 are mainly projected towards the tip of the cone of the siphon 56. The droplets 61 which could be projected towards the fan 13 are in fact folded towards the tip of the cone of the siphon 56 by the flange 52 of the bell-turbine 37 which serves as a drip guard so as not to splash up.

Over time, each droplet 61 carries a longer circular path in this housing 19, which increases the chances of meeting at least one particle. The amount of droplets in contact with the air having penetrated is greater in this device with a sprayer with turbine than that provided by a shower. And the swirl of air and droplets amplifies the mixing of air and droplets, creating more encounters between droplets and particles in a small space. After a certain time, the liquid 26 forming the siphon 56 has absorbed all the droplets 61 loaded with particles, the latter falling towards the bottom 36 of the casing 19 and will concentrate in the liquid layers 26 at the bottom 36 of the casing 19. The liquid 26 present on the surface of the siphon 56, upwardly from the walls of the casing 19 is discharged from particles and is again subjected to centrifugal force to be pulverized, to create new droplets ready to agglomerate. Likewise, the air present towards the top of the casing 19 is purified and concentrates earlier towards the top of the casing 19. The ventilator 13, which is also in operation, draws in this purified air and diffuses it towards the pregnant 2.

Because of the pooling of the drive motor 27 and the drive shaft 28, all the turbines 62, 63 and 64 and the propeller 32 have the same direction and speed of rotation.

If the liquid 26 is water, the housing 19 with the sprayer 12 and the centrifuge 11, then behaves like a dynamic water box.

We observe in the various figures: either the housing 19 does not contain liquid 26 (see Figure 2), or it contains liquid 26 in sufficient quantity to create the desired agglomeration phenomenon (see FIGS. 6).

Figure 5 shows a view along a cross section of the housing 19 made according to a preferred embodiment of the invention in the operating state creating the phenomenon of agglomeration, with the housing 19 filled from the beginning of the a sufficient quantity of liquid 26. But in some cases, it is better to feed it as needed. This makes it possible to reduce the mass of the treatment device 9 important criterion when it is embedded in a vehicle. To do so, it is necessary to provide a system 65 for supplying and purging liquid 26 from the treatment device 9.

FIG. 6 details a preferred embodiment of the treatment device 9 with a system 65 for feeding and purging the liquid 26 of the housing 19.

To do this, the bottom 36 of the housing 19 is pierced with a hole 66 opposite a cavity 42 and which extends into the stud 25 of the disk 24 of the deflector 23 to allow the installation of a pipe 67 in the hole 66. The pipe 67 serves to supply the casing 19 with liquid 26 and to discharge the liquid 26 from the casing 19 towards a reservoir 68. The hole 66 thus serves both for the supply of liquid 26 housing 19 only to the purge of the liquid 26.

The mechanism 69 for supplying liquid 26 comprises between the pipe 67 and the reservoir 68 of liquid 26 a first valve 70, a second valve 71, a tank 72 of liquid inlet 26, a motor pump 73 sensing the liquid 26 in the tank 68 and the spillway in the tank 72 and a liquid level sensor 74 in the tank 68. The first valve 70 is connected to the pipe 67, to the tank 72 for the arrival of liquid 26 and to the second valve 71. The second valve 71 is connected to the first valve 70 thus and the discharge 75 of the liquid 26 contaminated by the particles from the housing 19.

When the liquid level sensor 26 in the reservoir 68 indicates an insufficient amount of liquid, then the second valve 71 opens, the first valve 70 remains closed and the liquid 26 contained in the housing 19 is evacuated by the hole 66, the pipe 67, the first valve 70, the second valve 71 to the evacuation 75. The purge of the soiled liquid 26 is carried out. This makes it possible to be sure of having then only "clean" liquid 26 without particles having stagnated since the last use of the device 9.

Then the system 65 of supply and purge proceeds to the closing of the second valve 71 of the liquid inlet 26 from the tray 72. The motor pump 73 is fed from the tank 68, it fills the tray 26. Then the first valve 70 opens, the liquid 26 then flows into the pipe 67 to fill the housing 19 to the level necessary for the proper functioning of the treatment device 9. This so-called "level" level is reached when the liquid 26 is in its stable state between the intermediate edge 49 and the upper edge 47 of the hub 45 of the bell turbine 37.

Alternatively, the liquid 26 could be water for example.

Alternatively, there may be fins between the blades 46 at their fourth zone 60 to increase the suction of air in the bell turbine 37 or at their first zone 57 to increase the centrifugation of the agglomerated droplets 61 to the particles or to increase the centrifugation of the particles alone.

Alternatively, the reservoir 68 is fed by a second reservoir or the reservoir 68 is to be supplied by the user.

When it comes to water, the tank 68 can be fed by condensate water from the air conditioning or by the user.

Alternatively, the fan 13 could be implanted not coupled to the housing 19. The motor 27 and the drive shaft 28 would be dedicated to the bell-turbine 37 and independent of the means of rotation of the propeller 32 of the fan 13. The fan 13 could be installed downstream of the enclosure 2.

Alternatively, there could be a different motorized drive shaft for the centrifuge 11, the sprayer 12 or the elements of the device 10 for driving air.

Alternatively, the deflector 23 could be additional.

Alternatively, the assembly of the deflector 23 and the housing 19 could rest on studs 25 secured to the housing 19 and cavities 42 present on the disc 24 of the deflector 23.

Alternatively, the pipe 67 could also pass through the interstitial space and the bottom 36 of the housing 19 without passing through the stud 25 and the disc 24 of the deflector 23.

Alternatively, there could be a purge circuit separate from the power supply mechanism 69.

The invention thus proposes a device offering multiple advantages. It is thus possible to filter the air coming from outside in a minimum space by consuming little energy, by recycling liquid, and / or reducing the mechanical interventions of the user. The fact that the bell-tower is hermetic when the liquid is in sufficient quantity and is not in its centrifugation state with passage, makes it possible to guarantee that no outside air is pre-filtered before entering the heating installation. , air conditioning and / or ventilation / ventilation. The pre-filtering efficiency being integral, the risk of clogging of the installation is almost zero, it is possible to increase the outdoor air flow entering the heating, air conditioning and / or ventilation / ventilation system. . The sprayer with submerged turbine avoids any manipulation of filter screen change.

Claims (3)

Claims: An air handling device (9) comprising a device (10) for conveying air through the treatment device (9) and a liquid sprayer (12) such as droplets ( 61) of said sprayed liquid (26) agglomerate with particles carried by the incoming air and entrained in the treatment device (9), said sprayer (12) comprising a turbine (62), said device (10) for air entrainment comprising a fan (13) which is coaxial with said turbine (62); said air handler (9) further comprising a housing (19) connected to an air inlet (15) of the blower (13), comprising the sprayer (12) and an air inlet (22) at the bottom (36) of the housing (19) extended by a tubular conduit (35) coaxial with said turbine (62), and wherein said turbine (62) having a bell shape with a clamp (40): o covers said conduit (35) without touching it, o has a hub (45) with days (51) at said clamp (40) facing said duct (35), characterized in that said turbine (62) has inside its hub (45) portions of blades (46). 2. Device (9) according to the preceding claim, characterized in that it has a supply and a liquid purge (26) of the sprayer (12). 3. Device (9) according to claim 2 characterized in that the housing (19) has a hole (66) for supply and purge.