FR3105106A1 - Air treatment means for motor vehicles - Google Patents

Abstract

The invention relates to an air treatment means (1, 101) for a motor vehicle, comprising at least a first filtration means (2, 3, 4, 102, 103, 104) and a second filtration means (2, 3, 4, 102, 103, 104), said first and second filtration means having different filtration properties, characterized in that said first and second filtration means each comprise at least one junction zone (5, 105), said junction zones (5, 105) of the first (2, 3, 4, 102, 103, 104) and second (2, 3, 4, 102, 103, 104) filtration means being contiguous. Figure for abstract: [Fig. 1]

Description

Means of air treatment for a motor vehicle

The present invention is in the field of air purification devices, in particular for the passenger compartment of a motor vehicle.

In order to improve the quality of the air circulating in the passenger compartment of a motor vehicle, it is known to install in the latter one or more means of air filtration. The air filtration means are in particular likely to be placed in a ventilation, heating and/or air conditioning installation (also known by its English name “HVAC” for Heating Ventilation and Air-Conditioning), and/or be placed in an independent and autonomous air purification device installed anywhere in the passenger compartment.

The air filtration system integrated into an HVAC is effective for a large part of the pollution due to the use of non-selective filters for specific pollutants

However, this filtration system integrated into an HVAC has limits. Indeed, this filtration system is not suitable and/or is not sufficient in certain cases, in particular when the users have particular pathologies such as asthma, heart problems, respiratory allergies or, when they travel in regions where the exposure of motorists to certain pollutants is particularly pronounced.

Different types of air filtration means exist. For example, particulate air filters are known which make it possible to capture fine particles and dust of a given diameter, such as pollen, soot and/or tire wear residues.

It is also known so-called combined air filters, that is to say allowing in addition to stop particles and dust, to retain bad odors, harmful gases such as oxide or nitrogen dioxide, ozone, butane, toluene, sulfur dioxide, butadiene, or other gas.

In addition, in view of the increase in the number of people with allergies, it has been proposed to reinforce the efficiency of filtration, and reduce the risk of allergy for people in contact with the filtered air, in particular for the driver for whom the appearance of allergic symptoms, such as sneezing, can endanger the safety of the occupants of the motor vehicle. In this context, combined air filters with additional function, for example combined anti-allergen air filters, allow in addition to the functions of a combined air filter described above to neutralize allergens.

Today, such combination filters can be obtained by treating a single filtration medium to have different properties. Such air filters thus help to protect the occupants of the motor vehicle. However, the particles or other pollutants which are retained by the air filter can generate a phenomenon of clogging of this filter, which implies significant pressure drops reducing the flow of air passing through the air filter, and therefore the performance of the HVAC and/or the air purification device.

Patent application FR2906187 describes a device for purifying air in a passenger compartment comprising a box inside which circulates a flow of air set in motion by a fan. Such a device comprises an air inlet and an air outlet between which extend an air circulation channel housing the fan and a plurality of air treatment modules placed downstream of the fan, in the direction flow of air flow.

Such an air purification device is cumbersome due to its configuration which requires a large space between the air inlet and outlet in order to be able to place the fan and the various air filtration means there. Moreover, in such a system, each filtration means will involve a pressure drop, such that the overall pressure drop is relatively high.

Thus, today there is a need for an air filtration system that is adapted to the user, compact and that allows optimal efficiency of the installation in which it is located.

The present invention therefore proposes an air treatment means for the passenger compartment of a motor vehicle.

The air treatment means for a motor vehicle according to the invention comprises at least a first filtration means and a second filtration means, said first and second filtration means having different filtration properties, in which said first and second means filtration each comprise at least one junction zone, said junction zones of the first and second filtration means being contiguous.

Advantageously, such an air treatment means allows the use of different filtration means in a reduced space without increasing the overall pressure drop of the air treatment means. Such an air treatment means makes it possible to filter several types of pollutants according to the needs of the user. By “pollutant” is meant an agent of biological, chemical or physical external origin which, beyond a certain threshold, develops negative impacts on an ecosystem, environment and/or a human. In addition, such an air treatment means makes it possible to have a heterogeneous pressure drop per portion, which makes it possible to compensate for any imbalance in air flow. The user can thus have a personalized air treatment means according to his needs, which works efficiently and which can be adapted to any type of purification device and/or HVAC-type installation.

In one aspect according to the invention, said first and second filtration means are assembled by an assembly means at said junction zones. Such an assembly means makes it possible to assemble the said filtration means in a sealed manner.

In one aspect according to the invention, the filtration means of the treatment means are chosen from a filtration means for the filtration of particulate matter, a filtration means for the filtration of volatile organic compounds, a filtration means for the filtration of harmful gases, in particular nitrogen oxide or dioxide, ozone, butane, toluene, sulfur dioxide, butadiene, a filtration medium for the filtration of carbon dioxide, a filtration medium for the filtration of an odor, in particular an activated carbon cartridge.

In one aspect according to the invention, the air treatment means comprises an element for holding said air treatment means, configured to ensure the maintenance of said air treatment means in an air purification device configured to receive said air treatment means. This holding element has the function of ensuring the maintenance of air treatment in an air purification device capable of receiving it.

In one aspect according to the invention, the holding element is located on at least one end of the air treatment means.

In one aspect according to the invention, the air treatment means has a cylindrical shape of revolution around a longitudinal axis.

In a particular embodiment, the filtration means of the air treatment means extend along the longitudinal axis and the junction zones of said filtration means extend radially around said longitudinal axis.

In another embodiment, the filtration means extend along the longitudinal axis and are assembled in staggered rows relative to each other.

In another embodiment according to the invention, the filtration means extend along the longitudinal axis and the junction zones of said filtration means extend longitudinally along the longitudinal axis.

In one aspect according to the invention, the air treatment means the filtration means of the air treatment means according to the invention form a plane.

In a particular embodiment, the filtration means extend along an axis of symmetry, the junction zones of said filtration means extending along this axis of symmetry.

In a particular embodiment, the filtration means extend along an axis of symmetry, the junction zones of said filtration means being orthogonal to the axis of symmetry.

In another particular embodiment, the filtration means extend along an axis of symmetry, said filtration means being staggered with respect to each other.

The present invention also proposes an air purification device which may comprise a plurality of filtration means having the advantage of being particularly compact and making it possible to limit the pressure drop due to the filtration means which it may comprise.

• un boitier configuré pour recevoir au moins un moyen de traitement d’air, le boitier s’étendant le long d’un axe longitudinal et comprenant une première extrémité longitudinale et une deuxième extrémité longitudinale disposées de part et d’autre d’un plan médian perpendiculaire à l’axe longitudinal, et comprenant au moins une face latérale,
• au moins une entrée d’air,
• au moins une sortie d’air,

dans lequel l’entrée d’air est située sur ladite face latérale du boitier, la sortie d’air est située au niveau d’une desdites extrémité longitudinale du boitier, de préférence au niveau de la première extrémité, ladite entrée d’air étant contiguë à ladite sortie d’air.For this, the invention proposes a device for purifying air, in particular for the passenger compartment of a motor vehicle, comprising:

• a box configured to receive at least one air treatment means, the box extending along a longitudinal axis and comprising a first longitudinal end and a second longitudinal end arranged on either side of a median plane perpendicular to the longitudinal axis, and comprising at least one side face,
• at least one air inlet,
• at least one air outlet,

wherein the air inlet is located on said side face of the housing, the air outlet is located at one of said longitudinal end of the housing, preferably at the first end, said air inlet being adjacent to said air outlet.

Thus, the device according to the invention has a reduced size due to the arrangement of the air inlet and outlet which are close to each other.

In one aspect according to the invention, the air purification device comprises at least one air entrainment means, said air entrainment means is preferably located close to the second longitudinal end, said second end longitudinal being distal to the first longitudinal end. By "close to the second longitudinal end", it is understood here that the air entrainment means is located in the box at a distance from the second longitudinal end smaller than the distance at which it is located from the first longitudinal end. Such an arrangement allows the air to be expelled towards the user after circulation in the device.

In one aspect according to the invention, the air inlet and the air outlet are separated by at least one dividing wall, said dividing wall extends between the first longitudinal end on which the air outlet is located. air, and the air entraining means. The partition wall thus creates a conduit for the passage of air into the device. In one embodiment, the partition wall forms a baffle.

In one aspect according to the invention, the air purification device comprises an air treatment means. The air entrainment means can for example be the air treatment means described above.

In one aspect according to the invention, the purification device comprises at least one removable cover located on at least one of the two longitudinal ends. The removable cover makes it easy to change the air treatment means when it is worn out, or when the user wishes to change filter types.

In a particular embodiment, the air purification device includes an energy storage element, such as a battery. The air purification device is therefore energy self-sufficient. The user does not need to connect said device continuously to a power source via wires, said device is therefore energy efficient and the size is further reduced.

In a particular embodiment, the air purification device comprises means for charging the energy storage element.

In a particular embodiment, the air purification device comprises an electronic circuit.

In a particular embodiment, the air purification device comprises at least one wireless transceiver module configured to send information to a remote server and to receive information from a remote server.

In a particular embodiment, the air purification device comprises an activation means. The activation means allows activation and/or adjustment of said automatic or manual air purification device.

In one aspect according to the invention, the air purification device has a cylindrical shape which extends along the longitudinal axis, the diameter of the first longitudinal end of said device comprising the air outlet being greater than the diameter of the second longitudinal end of said device.

Other characteristics and advantages of the invention will appear more clearly on reading the following description, given by way of illustrative and non-limiting example, and the appended drawings, among which:

Figures 1 to 4 , [Fig. 2], [Fig. 3], [Fig. 4] represent different means of producing an air treatment means according to the invention.

Figure 5 represents a ventilation, heating and/or air conditioning (HVAC) installation comprising an air treatment means according to the invention.

Figure 6 is an illustration of an air purification device according to the invention, capable of receiving an air treatment means as represented in FIGS. 1 to 3.

FIG. 1 represents an air treatment means configured to be placed in an air purification device, such as the air purification device 10 represented in FIG. 6.

The air treatment means 1 comprises a first filtration means 2, a second filtration means 3 and a third filtration means 4 having different filtration properties. The first filtration means 2 comprises a junction zone 5 contiguous with a junction zone of the second filtration means 3. The third filtration means 4 comprises a junction zone 5 contiguous to a junction zone of the second filtration means 3.

Such an arrangement makes it possible to obtain an air treatment means comprising as many filtration means as the user needs while limiting the overall pressure drop of the air treatment means 1 when it is installed in a air purifying device.

The first 2, second 3 and third 4 filtration means are chosen from among a filtration means for the filtration of particulate matter, a filtration means for the filtration of volatile organic compounds, a filtration means for the filtration of harmful gases, in particular nitrogen oxide or dioxide, ozone, butane, toluene, sulfur dioxide, butadiene, a filtration medium for the filtration of carbon dioxide, a filtration medium for the filtration of a odor, especially an activated carbon cartridge. The user can thus have an air treatment means adapted to his needs.

The first filtration means 2 and the second 3 filtration means are assembled by at least one assembly means 6 at the junction zones 5. The same is true for the second filtration means 3 and the third filtration 4. The assembly means 6 is here a compression element. The compression element may in particular comprise a plastic material. In variants, the assembly means can be an adhesive means, in particular a glue or a self-adhesive element. The assembly means allows the filters to be assembled in a sealed manner.

In the embodiment of Figure 1, the air treatment means 1 has a cylindrical shape of revolution around a longitudinal axis 100. Such an air treatment means is suitable for use in the purification device of air 10 described in Figure 6 of this description.

The air treatment means 1 comprises two ends 9 distal to each other located on either side of a median plane 200 orthogonal to the longitudinal axis 100. The filtration means 2, 3 and 4 extend along the longitudinal axis 100 and the junction zones 5 extend radially around the longitudinal axis 100. In this embodiment, the filtration means 2, 3 and 4 are stacked on top of each other. others along the longitudinal axis of symmetry 100.

The air treatment means 1 comprises a support means 7 extending along the longitudinal axis 100, on which are stacked and maintained the first 2, second 3 and third 4 filtration means to ensure the rigidity and the resistance of the air treatment means 1. A holding element 8 of the filtration means 2, 3 and 4 is located on each distal end 9 of the air treatment means 1, this holding element 8 is connected by means of support 7 in particular by compression, or in a variant by adhesion. The holding element 8 allows the air treatment means 1 to be held in place in a purification device in which it is applied, in particular in the air purification device 10 shown in FIG. 6.

FIG. 2 represents an air treatment means according to another embodiment of the invention and configured to be used in an air purification device such as the air purification device 10.

The air treatment means 1 comprises a first filtration means 2, a second filtration means 3 and a third filtration means 4 having different filtration properties. The first filtration means 2 comprises a junction zone 5 contiguous with a junction zone of the second filtration means 3. The third filtration means 4 comprises a junction zone 5 contiguous to a junction zone of the second filtration means 3.

Such an arrangement makes it possible to obtain an air treatment means comprising as many filtration means as the user needs while limiting the overall pressure drop of the air treatment means when it is installed in a device. air purification.

The first 2, second 3 and third 4 filtration means are chosen from among a filtration means for the filtration of particulate matter, a filtration means for the filtration of volatile organic compounds, a filtration means for the filtration of harmful gases, in particular nitrogen oxide or dioxide, ozone, butane, toluene, sulfur dioxide, butadiene, a filtration medium for the filtration of carbon dioxide, a filtration medium for the filtration of a odor, especially an activated carbon cartridge. The user can thus have an air treatment means adapted to his needs.

The first filtration means 2 and the second 3 filtration means are assembled by at least one assembly means 6 at the junction zones 5. The same is true for the second filtration means 3 and the third filtration 4, as well as for the third 4 and first 2 means of filtration. The assembly means 6 is here an adhesive means, in particular a glue. In variants, the assembly means can be a self-adhesive element or else a compression element. The assembly means allows the filters to be assembled in a sealed manner.

In the embodiment of Figure 2, the air treatment means 1 has a cylindrical shape of revolution about a longitudinal axis 100. Such an air treatment means 1 is suitable for use in the device of air purification 10 described in Figure 6. The air treatment means 1 comprises two ends distal to each other 9 located on either side of a median plane 400. The first 2, second 3 and third 4 filtration means extend along the longitudinal axis 100 and the junction zones 5 of said filtration means extend longitudinally along the longitudinal axis 100.

The air treatment means 1 comprises a support means 7 extending along the longitudinal axis 100, on which are placed and maintained the first 2, second 3 and third 4 filtration means to ensure the rigidity and the resistance of the air treatment means 1. A holding element 8 of the filtration means 2, 3 and 4 is located on each distal end 9 of the air treatment means 1, this holding element 8 is connected by means of support in particular by compression, or in a variant by adhesion. The holding element 8 allows the air treatment means 1 to be held in place in a purification device in which it is applied, in particular in the air purification device 10 shown in FIG. 6.

FIG. 3 represents an air treatment means according to another embodiment of the invention and configured to be used in an air purification device such as the air purification device 10.

The air treatment means 1 comprises a first filtration means 2 and a second filtration means 3 having different filtration properties. The first filtration means 2 comprises a junction zone 5 contiguous with a junction zone of the second filtration means 3.

Such an arrangement makes it possible to obtain an air treatment means comprising as many filtration means as the user needs while limiting the overall pressure drop of the air treatment means when it is installed in a device. air purification.

The first 2 and second 3 filtration means are chosen from among a filtration means for the filtration of particulate matter, a filtration means for the filtration of volatile organic compounds, a filtration means for the filtration of harmful gases, in particular the oxide or nitrogen dioxide, ozone, butane, toluene, sulfur dioxide, butadiene, a filtration medium for the filtration of carbon dioxide, a filtration medium for the filtration of an odor, in particular an activated carbon cartridge. The user can thus have an air treatment means adapted to his needs.

The first filtration means 2 and the second 3 filtration means are assembled by at least one assembly means 6 at the level of the junction zones 5. The assembly means 6 is here an adhesive means, in particular an adhesive. In variants, the assembly means can be a self-adhesive element or a compressive element. The assembly means allows the filters to be assembled in a sealed manner.

In the embodiment of Figure 3, the air treatment means 1 has a cylindrical shape of revolution about a longitudinal axis 100. Such an air treatment means 1 is suitable for use in the device of air purification 10 described in Figure 6. The air treatment means 1 comprises two ends distal to each other 9 located on either side of a median plane 400. The first 2 and second 3 filtration means extend along the longitudinal axis 100 and are assembled in staggered rows with respect to each other.

The air treatment means 1 comprises a support means 7 extending along the longitudinal axis 100, on which the first 2 and second 3 filtration means are placed and maintained to ensure the rigidity and the resistance of the means. air treatment 1. A holding element 8 of the filtration means 2, and 3 is located on each distal end 9 of the air treatment means 1, this holding element 8 is connected to the support means 7 in particular by compression, or in a variant by adhesion. The holding element 8 allows the air treatment means 1 to be held in place in a purification device in which it is applied, in particular in the air purification device 10 shown in FIG. 6.

An air treatment means 1 as represented in FIGS. 1 to 3 makes it possible to reduce the overall pressure drops, in particular due to the arrangement of the filtration means 2, 3, 4. The arrangement of these filtration means comprising different filtration properties also generates a heterogeneous pressure drop, which makes it possible to homogenize the air flow in the purification device comprising said air treatment means 1.

FIG. 4 represents an exploded view of an air treatment means according to another embodiment of the invention and, configured to be placed in a ventilation, air conditioning and/or heating system of a motor vehicle also called HVAC device.

The air treatment means 101 comprises a first filtration means 102, a second filtration means 103 and a third filtration means 104 having different filtration parameters.

The first 102, second 103 and third 104 filtration means are chosen from among a filtration means for the filtration of particulate matter, a filtration means for the filtration of volatile organic compounds, a filtration means for the filtration of harmful gases, in particular nitrogen oxide or dioxide, ozone, butane, toluene, sulfur dioxide, butadiene, a filtration medium for the filtration of carbon dioxide, a filtration medium for the filtration of a odor, especially an activated carbon cartridge.

The first filtration means 102 comprises a junction zone 105 contiguous to a junction zone 105 of the second filtration means 103. The third filtration means 104 has a junction zone 105 contiguous to another junction zone 105 of the second filtration means. filtration 103.

The first 102 and second 103, a are assembled by assembly means at said junction zones. The same is true for the second 103 and third 104 filtration means. The assembly means here is an adhesive means, such as glue. Alternatively, the assembly means may be a self-adhesive element or even a compression element.

The first 102, second 103 and third 104 filtration means form a plane. The first 102, second 103 and third 104 filtration means extend along an axis of symmetry 300. In a first embodiment, the junction zones 105 of the first 102, second 103 and third 104 means extend along this axis of symmetry (300). In another embodiment, the junction zones 105 of the first 102, second 103, and third 104 filtration means are orthogonal to the axis of symmetry 300. In a third embodiment, the first 102, second 103 and third 104 means filters are placed in staggered rows with respect to each other.

The air treatment means 101 comprises two holding elements 108 which are positioned on two distal ends 109 of the air treatment means 101. These holding elements ensure the rigidity and the maintenance of the shape of the air treatment means. air 101, as well as its maintenance in an HVAC installation such as that shown in figure 5.

FIG. 5 represents a device for ventilation, air conditioning and/or heating (also known by its English name “HVAC”) comprising an air treatment means according to the invention.

The ventilation, air conditioning and/or heating device comprises at least one air inlet 110 through which an air flow F enters said device. According to a particular embodiment not illustrated, the ventilation, air conditioning and/or heating device comprises two air inlets, one for a flow of air taken from outside the motor vehicle (known as the fresh air inlet) and one for a flow of air taken from the passenger compartment of the motor vehicle (known as the recycled air inlet). The air flow F circulates in the ventilation, air conditioning and/or heating device by passing through a first non-selective filter 111 which in particular avoids the accumulation of dust in the HVAC device. The air flow F is then sucked in by an air drive means 112, here a fan, then sent to an air treatment means 101 according to the invention. The air flow F passes through the air treatment means then circulates through an evaporator 113 to be cooled then a radiator 114 to be heated before being expelled into the passenger compartment 116 of the vehicle by at least an air outlet 115. The air treatment means 101 according to the invention comes here in addition to the first non-selective filter 111 so as to improve the quality of the air in the passenger compartment coming from the HVAC device and to provide personalized filtration according to the needs of the user. In addition, the use of the air treatment means 101 in such a device makes it possible to reduce the overall pressure drops. The air entrainment means 112 is likely to cause heterogeneity in the air flow. The arrangement of the filtration means of the air treatment means 101 comprising different filtration properties compensates for this heterogeneity by generating a heterogeneous pressure drop, which makes it possible to homogenize the air flow after it has passed through the means. air treatment 101 in the HVAC device.

FIG. 6 represents an air purification device 10 of a motor vehicle cabin according to the invention.

• un boitier 11 configuré pour recevoir un moyen de traitement d’air 24, le boitier 11 comprenant une paroi latérale 12 qui s’étend le long d’un axe longitudinal 400 et une première extrémité longitudinale 13 et une deuxième extrémité longitudinale 14 disposées de part et d’autre d’un plan médian 500 perpendiculaire à l’axe longitudinal 400,
• des entrées d’air 15 situées sur la paroi latérale 12 du boitier 11,
• une sortie d’air 16 située sur la première extrémité longitudinale 13 du boitier 11,

les entrées d’air 15 sont contiguës à la sortie d’air 16. Cette disposition permet d’avoir un dispositif peu encombrant, la surface du dispositif de purification d’air 10 ne dépendant pas des composants présents entre l’entrée d’air 15 et la sortie d’air 16.The air purification device 10 comprises:

• a box 11 configured to receive an air treatment means 24, the box 11 comprising a side wall 12 which extends along a longitudinal axis 400 and a first longitudinal end 13 and a second longitudinal end 14 arranged on either side and on the other side of a median plane 500 perpendicular to the longitudinal axis 400,
• air inlets 15 located on the side wall 12 of the box 11,
• an air outlet 16 located on the first longitudinal end 13 of the box 11,

the air inlets 15 are contiguous to the air outlet 16. This arrangement makes it possible to have a compact device, the surface of the air purification device 10 not depending on the components present between the air inlet 15 and the air outlet 16.

In this example, the air purification device 10 comprises an air entrainment means 17, here a fan, located close to the second longitudinal end 14 which is distal to the first longitudinal end 13 on which the air outlet 16. The air drive means 17 gives the direction of flow of an air flow F'.

In this example, the air purification device 10 comprises an air treatment means 24 which can be, for example, an air treatment means 1 as described previously. The air treatment means 24 is located in the box 11. It extends along the longitudinal axis 400 from the first longitudinal end 13 of the box 11 to the air drive means 17, in a direction substantially parallel to that of the side wall 12 of the box 11. This air treatment means 24 comprises one or more filtration means, such as for example an air treatment means 1 as described above in relation to the figures 1 to 3. The use of an air treatment means 1 as described above in the air purification device 10 has the particular effect of generating a heterogeneous pressure drop, with a higher pressure drop close to the air drive means 17 and a lower pressure drop in the zones furthest from the air drive means, in particular at the level of the first longitudinal end 13. This makes it possible to optimize the use of the entire surface of the air treatment means. The air treatment means 24 comprises at each of its ends a holding element 25, making it possible to hold the air treatment means 24 in the purification device 10. This air treatment means 24 is cylindrical in shape circular comprising a hollow. As indicated above, it may for example be the air treatment means as described above.

The air inlets 15 and the outlet 16, here, are separated by a dividing wall 18. This dividing wall 18 extends along the longitudinal axis 400 of the first longitudinal end 13 on which the outlet is located. 16 to the air entrainment means 17. This separation wall 18 is located inside the box 11, more precisely in the hollow of the air treatment means 24. The separation wall 18 extends along the longitudinal axis 400 and has a cylindrical shape around this axis. Thus, the separation wall 18 forms a duct for the circulation of the air flow F′. The separation wall 18 makes it possible to separate the unfiltered air which enters the purification device 10 through the air inlets 15 from the filtered air which leaves the purification device 10 through the air outlet 16.

Thus, when the air purification device is in operation, the air flow F' enters the box 11 through the air inlets 15 located all around the box 11, close to the first longitudinal end 13 of that -this. The air drive means 17 directs the air flow F' towards the air treatment means 24 so that the air flow F' crosses it over its entire length as far as the drive means. air 17. The air flow F' is then directed towards the air outlet 16 following the air duct formed by the partition wall 18 until it reaches the air outlet 16. The he filtered air is thus propelled into the passenger compartment, in the direction of the user.

In this example, the air purification device comprises a removable cover 19 which closes the casing 11 at its first longitudinal end 13. The removable cover 19 comprises a joining means 21, here a gasket, ensuring the seal between the removable cover 19 and the first longitudinal end 13. A joining means 21 used can comprise a foam, an elastomer, a flexible synthetic polymer, a rubber. This tightness makes it possible to avoid a disturbance of the air flow F' and limits the noise pollution which could be caused in particular by the air entrainment means 17. The removable cover 19 here comprises a rib 20 which fixes the cover 19 to the side wall 12 of the box 11 above the first end 13 of the box 11. In one embodiment, the rib 20 is present over the entire circumference of the removable cover 19. In a second embodiment, the cover 19 comprises several ribs on either side of the cover 19 allowing attachment to the side wall 12 of the case. The removable cover 19 is thus fixed to the box 11 by driving in the rib 20 along the side wall 12 of the box 11, at the level of the first longitudinal end 13. The removable cover 19 comprises a cavity through which the flow of 'air F' can come out.

The air purification device 10 includes an energy storage element 22, here a battery. The air purification device 10 is therefore energy self-sufficient, it is not necessary for it to be continuously connected to an energy supply means. The air purification device 10 can thus be placed at any location in the passenger compartment. In addition, the bulk is all the more reduced as it is not necessary to continuously use wires to connect said purification device 10 to a power source.

The purification device 10 comprises a battery charging means 22 (not shown here). In one embodiment, the purification device 10 comprises a connector of the USB type (for "Universal Serial Bus", or even "Universal Serial Bus" in French) to ensure a physical connection to an external peripheral as a charging means. Thus, when the battery 22 is discharged, it can be recharged by connecting, via the connector, said purification device 10 to a USB peripheral located in particular on a cigarette lighter socket located in the passenger compartment of the motor vehicle. This USB type connector can also be used to connect the air purification device 10 to a mobile computing device such as a telephone, an electronic tablet, or even a "smart telephone" (known by its English name "Smartphone" in everyday language), for example so that information is exchanged between the mobile computing device and the air purification device 10;

In another embodiment, the battery charging means 22 can be a solar collector, in particular a photovoltaic cell. In this way, the air purification device 10 operates completely autonomously.

In a variant of the invention, the air purification device 10 comprises means for indicating the level of charge of the battery 22 of said purification device 10. This means for indicating the level of charge is for example a beam light located on the housing 11 of the purification device 10, which flashes when the charge level of the battery 22 is low. The user is thus clearly informed when he must charge the battery of the air purification device 10 for it to operate.

The air purification device 10 also includes an electronic circuit 23. This electronic circuit 23 includes a wireless transmission/reception module, configured to send information to a remote server and to receive information from a remote server. A remote server may in particular be a mobile computing device such as a telephone, an electronic tablet, or even a mobile telephone equipped with advanced functionalities which are similar to those of a computer called a "smart telephone" or even a "smartphone" in the everyday language. The remote server can also or alternatively be a remote air measurement and information device, also comprising a wireless transceiver module configured to send air quality measurement information.

This module is here a radio wave transmission-reception module, in particular of the Bluetooth® or Wi-Fi type.

The air purification device 10 comprises means for activating the air drive means 17. The activation means is configured to allow the start-up and for the adjustment of the power of the drive means. air 17.

The activation means may be an automatic activation means. In this case, the activation means operates via a processor included in the electronic circuit 23.

In this embodiment, a remote server, in particular a means of measuring air quality and/or a mobile computing device, transmits to the air purification device 10 information on the quality of the air, for example via a wireless transmission-reception means.

The processor located in the electronic circuit comprises an information processing means. The information processing means generates and transmits a control instruction to the air entrainment means 17, this control instruction being dependent on the measurement of the quality of the air given by the device for measuring the quality of the air. air and/or a mobile computing device. Thus, the air entrainment means 17 is activated when the air quality measurement value given by the remote server is representative of poor air quality. The power of the air drive means 17 is adjusted according to the air quality value given by the remote server. For example, when the air quality measurement is representative of very poor air quality, the processor processing module receives this information and develops and transmits the control instruction that the means of Air entrainment must be activated at maximum operating power to ensure optimum air filtration. When the air quality measurement is representative of moderately good air quality, the air treatment module generates and transmits to the air entrainment means 17 a control instruction according to which the air drive 17 must be activated at a minimum operating power so as to filter the air optimally and avoid unnecessary wear of the air drive means 17.

The air purification device 10 also or alternatively comprises manual activation means (not shown). It is for example a physical control button, such as a push button that can be actuated by pressure from a user. In one embodiment, the control button is arranged projecting from a wall of the air purification device 10, in another embodiment, the control button is a touch control button. A manual activation means can in another variant be a software application executed on a mobile computing device such as a mobile telephone, a "Smartphone" or a tablet or any other mobile means of communication, the software application being controlled by the user. The power of the air entrainment means 17 is adjusted via this activation means. Thus, the activation means offers several operating modes, for example a "powerful" mode for which the power of the air drive element 17 is maximum, a "medium" mode for which the power of the air drive 17 is average, and a "low" mode for which the power of the air drive means 17 is low. In this embodiment, the processing module of the processor receives the information given by the user mechanically or via the wireless transceiver module, and elaborates and transmits to the air entrainment means 17 a control instruction accordingly.

In a particular embodiment according to the invention, the purification device 10 comprises at least one sensor for detecting at least one pollutant. By “pollutant” is meant an agent of biological, chemical or physical external origin which, beyond a certain threshold, develops negative impacts on an ecosystem, environment and/or a human.

The detection sensor is selected from a sensor for detecting volatile organic compounds, the sensor being configured to measure a value of a level of volatile organic compounds, a sensor for detecting particulate matter, the sensor being configured to measure a value of a particulate matter level, a carbon dioxide detection sensor, the sensor being configured to measure a value of a carbon dioxide level, a metal oxide gas detection sensor, the sensor being configured to measure a value of a gas rate.

In this embodiment, the air purification device 10 according to the invention may comprise an air quality indication device. In a preferred mode, this air quality indicating device is a luminous indicating device configured to indicate a state of air pollution to the user. The air quality indication device is configured to emit a light beam whose configuration changes according to a change in the quality of the air in the passenger compartment. Such an air quality indication device makes it possible to inform the user in real time visually and quickly by means of an intuitive and aesthetic light signal, to warn him of a deterioration in the quality of the air. ambient air or reassure him about the good quality of the air he breathes.

• un module d’analyse configuré pour comparer la valeur du taux de polluants mesurée les capteurs de détection de polluants et les valeurs seuils du taux de ces polluants,
• au moins un module de traitement configuré pour :
  • élaborer et transmettre au moins une instruction de commande au dispositif d’indication de la qualité de l’air en fonction des valeurs mesurées, et
  • élaborer et transmettre au moins une instruction de commande au moyen d’entrainement d’air 17.

In this particular embodiment, the electronic circuit 23 comprises a processor comprising:

• an analysis module configured to compare the value of the level of pollutants measured by the pollutant detection sensors and the threshold values of the level of these pollutants,
• at least one processing module configured for:
  • developing and transmitting at least one control instruction to the air quality indicating device based on the measured values, and
  • develop and transmit at least one control instruction to the air entrainment means 17.

The threshold values correspond here to the values of the levels of pollutants, for example measured by sensors for detecting these pollutants located outside the vehicle. The quality of the air in the passenger compartment of the vehicle is therefore compared to the quality of the atmospheric air, the user can thus adapt his behavior according to the indications he receives (for example, open a window when he to the indication that the air in the passenger compartment is more polluted than the atmospheric air).

In another embodiment, the threshold values may be predetermined.

These threshold values can be entered automatically or manually into the air quality measurement and information device.

The processor analysis module compares the value of the measured pollutant rate with the threshold values. If the measured value is higher than the threshold value, the air quality is poor, i.e. the air analyzed is too polluted. If the measured value is equal to the threshold value, the air quality is considered moderately good. If the measured value is below the threshold value, the air quality is considered good. In addition, it is possible to have intermediate thresholds representative of a gradual deterioration in air quality.

The processing module of the processor is configured to model a control instruction following a comparison made by the analysis module. Thus, the control instruction determines the characteristics of the light beam to be produced by the air quality indicating device, and in particular a shape and/or a light intensity and/or a particular color of the light beam as a function the measured air quality value (for example: red for poor air quality, orange for moderately good air quality and green for good air quality).

The processing module is also configured to generate and transmit at least one control instruction to the air drive means 17. The control instruction determines the activation and the power of the air drive means 17. By example, when a measured pollutant value is representative of very poor air quality, that is to say the measured value is significantly greater than the threshold value, the power of the drive means of air 17 is maximum.

The air purifying device has a cylindrical shape which extends along the longitudinal axis 400. The diameter of the first longitudinal end 13 is greater than the diameter of the second longitudinal end 14. The air purifying device 10 is thus configured to be placed in a device capable of containing a beverage of a motor vehicle, also called a "cup holder".

The invention cannot be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configuration and to any technical combination operating such means.

Claims (6)

Air treatment means (1, 101) for a motor vehicle, comprising at least a first filtration means (2, 3, 4, 102, 103, 104) and a second filtration means (2, 3, 4, 102 , 103, 104), said first and second filtration means having different filtration properties, characterized in that said first and second filtration means each comprise at least one junction zone (5, 105), said junction zones ( 5, 105) of the first (2, 3, 4, 102, 103, 104) and second (2, 3, 4, 102, 103, 104) filtration means being contiguous. Air treatment means (1, 101) according to claim 1, characterized in that said first (2, 3, 4, 102, 103, 104) and second (2, 3, 4, 102, 103, 104) filtering means are assembled by assembly means (6, 106) at said junction zones (5, 105). Air treatment means (1, 101) according to one of the preceding claims, characterized in that the said filtration means (2, 3, 4, 102, 103, 104) are chosen from among a filtration means for the filtration of particulate matter, a filtration medium for the filtration of volatile organic compounds, a filtration medium for the filtration of noxious gases including nitrogen oxide or dioxide, ozone, butane, toluene, sulfur, butadiene, a filtration means for the filtration of carbon dioxide, a filtration means for the filtration of an odor, in particular an activated carbon cartridge. Air treatment means (1, 101) according to one of the preceding claims, characterized in that it comprises an element (8, 108) for holding said air treatment means (1, 101), configured to maintaining said air treatment means (1, 101) in an air purification device configured to receive said air treatment means (1, 101). Air treatment means (1) according to one of Claims 1 to 4, characterized in that the said air treatment means (1) has a cylindrical shape of revolution around a longitudinal axis (100). Air treatment means (101) according to one of Claims 1 to 4, characterized in that the filtration means (102, 103, 104) form a plane.