AIR FILTRATION ASSEMBLY

Description

DESCRIPTION Scope of application 5

[0001] The present invention relates to an assembly air filtration of a vehicle. Furthermore, this The invention also concerns a ventilation system for a vehicle that includes the air filtration assembly.

[0002] The context in which this is set 10 invention is that of the air filtration assemblies of the automotive sector. Specifically, it refers to the air filtration assemblies suitable for filtering the incoming air sucked from the environment to be brought into the passenger compartment, and in general in inhabited areas, of the vehicle. 15

[0003] In particular, the purpose of such assemblies is to to filter the air in such a way as to eliminate from it suspended particles and / or bacteria and / or harmful gases and / or odors.

[0004] It is therefore essential that such assemblies filters allow the passage of large quantities 20 of air and above all that perform a filtering action of said significant amount of air effectively and efficient.

[0005] For this reason, the known air filtration assemblies include specific boxes and specific cartridges 25 filters, typically, panel elements, housed in said boxes.

[0006] Main problem of the known filtration assemblies air resides in their bulk.

[0007] In fact, to ensure the passage of high 5 quantities of air, known air filtration assemblies have been developed in such a way as to have important dimensions, so as to ensure accommodation and exploitation of a panel with a significant filtering area.

[0008] The larger the assembly size 10 air filtration, the more space it takes up and therefore the more space it occupies inside of the vehicle, preventing or making it difficult to positioning of other components.

[0009] Furthermore, the larger the size 15 of the air filtration assembly, less flexibility of positioning inside the vehicle presents the assembly air filtration itself. Solution of the invention

[00010] The need is therefore strongly felt 20 to make available an air filtration assembly that is suitable for effectively filtering large quantities of air, and at the same time that it is versatile and flexible in positioning inside the vehicle.

[00011] The purpose of this invention is precisely that 25 to provide an air filtration assembly in which it is resolved the aforementioned need and are also satisfied in a manner effectively and efficiently meet the needs of the specific sector of application.

[00012] This aim is achieved by means of the assembly 5 air filtration claimed in claim 1. In addition, this purpose is also solved by a system of ventilation of a vehicle which includes the assembly of filtration, in accordance with claim 16.

[00013] The claims made by these employees show 10 preferred embodiments involving additional advantageous aspects. Description of the drawings

[00014] Additional features and benefits of the invention will appear from the description below 15 reported of his favorite examples of realization, data by way of non-limiting indication, with reference to the attached figures in which:

[00015] – Figure 1 is a perspective view of a air filtration assembly in accordance with a preferred shape 20 of realization;

[00016] - Figure 2 is a front view of the assembly air filtration according to figure 1;

[00017] – Figure 2' shows a sectional view along the VV plan shown in figure 2; 25

[00018] – Figure 3 is a perspective view of parts separate the air filter assembly according to the figure 1;

[00019] – Figure 4 is a top view of the assembly air filtration according to figure 3; 5

[00020] – figure 4' shows a sectional view along the VI-VI plan in figure 4;

[00021] – Figure 4” shows a sectional view along the VII-VII plan shown in figure 4';

[00022] – Figure 5 is a perspective view of parts 10 separate air filtration assembly in accordance with a further preferred embodiment;

[00023] – Figure 6 is a perspective view of parts separate air filtration assembly in accordance with a yet further preferred form of embodiment. 15 Detailed description

[00024] In the attached figures, with the number of reference 1 indicates an air filtration assembly in agreement with the present invention.

[00025] In accordance with the present invention, the assembly 20 air filtration 1 is suitable to be part of a vehicle. In In particular, the air filter assembly 1 is suitable for making part of a vehicle's ventilation system. Preferably, the air filter assembly 1 is then connectable to an air intake assembly included in 25 said system. Preferably, the filtration assembly air 1 is fluidly connectable to the passenger compartment, and in general in inhabited areas, of the vehicle. Preferably, the ventilation system of a vehicle is also connected to the air conditioning system for cooling 5 of the passenger compartment.

[00026] Preferably, the air filter assembly 1 is passable by suction from the ambient air. Inside the air filter assembly 1 the air environmental is therefore separated from unwanted elements 10 suspended in it and possibly also cleaned from odors, from bacteria, from volatile organic compounds, from substances harmful chemicals.

[00027] As stated, it is the object of the present invention, also the ventilation system of a vehicle which includes 15 the air filtration assembly 1. In particular, said ventilation system also includes an assembly of air intake suitable for extracting ambient air through the air filter assembly 1.

[00028] According to the present invention, the assembly 20 air filtration 1 includes a device connection 2, fluidly connectable to an assembly of aspiration.

[00029] The connecting device 2 extending in length along a suction axis XX between a 25 input region 21 and an output region 22.

[00030] In accordance with a preferred form of realization, said XX suction axis has development linear.

[00031] In accordance with a preferred form of 5 realization, said suction axis XX has development segmented.

[00032] In accordance with a preferred form of realization, said XX suction axis has development curvilinear. 10

[00033] According to a preferred embodiment, the input region 21 is configured to allow the entry of the air filtered by the filtering partitions inside the connecting device 2, while the Output region 22 is configured to allow output 15 of the filtered air from the connection device 2 towards the air intake assembly.

[00034] According to a preferred embodiment, the connecting device 2 is developed in such a way to facilitate the flow of air inside it. 20

[00035] According to a preferred embodiment said connecting device 2 has the shape essentially of a conduit.

[00036] In accordance with the present invention, the assembly air filtration 1 includes at least two filter media 4. 25

[00037] Each filter septum 4, included in the assembly air filtration 1, extends along a respective axis filter Y1-Y1, Y2-Y2 between a first end 41 fluidly connected to the connection device 2 and a second closed end 42. 5

[00038] In particular each filter septum 4, included in the air filtration assembly 1, extends along a respective filter axis Y1-Y1, Y2-Y2 between a first end 41 fluidly connected to the region of entrance 21 and a second closed end 42. 10

[00039] Furthermore, each filter septum 4 comprises a 40mm tubular filter media that extends around the respective filter axis Y1-Y1, Y2-Y2 being traversable from the air, preferably in a radial direction, from the outside to the inside. 15

[00040] Specifically called tubular filter media 40 comprises an internal cavity 400 open in correspondence of the first end 41 and closed in correspondence of the second end 42.

[00041] Preferably, said second end 42 is 20 closed by a cap element 6, engaged in a seal to the medium tubular filter 40.

[00042] In accordance with the present invention, the media filter 40 comprises a particulate filter layer 401 and an adsorbent filter layer 402. 25

[00043] Preferably, the adsorbent filter layer 402 is positioned radially distal from the respective axis Y1-Y1, Y2-Y2 filter.

[00044] In other words, the air first meets the layer adsorbent filter 402 of the particle layer 401. 5 Preferably, the adsorbent filter layer 402 is fluidly placed upstream of the particulate layer 401 with respect to the direction of air circulation in filtration.

[00045] Preferably, the adsorbent filter layer 10 402 comprises one or more layers based on activated carbon.

[00046] Preferably, the filter layer particle 401 has high filtering efficiency, being of the HEPA type.

[00047] Preferably, the filter media 40 comprises 15 the two filter layers 401, 402 arranged in series. In according to a preferred embodiment, the layer adsorbent filter 402 is placed upstream of the layer particle filter 401 with respect to the direction of air circulation, in which the filter layer 20 adsorbent 402 has a tubular geometry while the layer particle filter 401 has a geometry of the type stellar.

[00048] Preferably the filter media 40 comprises the two filter layers 401, 402 arranged in series, in the form 25 of concentric stars.

[00049] In accordance with a preferred form of realization, the adsorbent filter layer 402 It comprises one or more layers of activated carbon and two layers permeable containment, in which the filter layer 5 particle 401 is one of the containment layers at activated carbon.

[00050] In accordance with a preferred form of realization, the adsorbent filter layer 402 It includes two permeable layers of carbon containment 10 active, and the particle filter layer 401 forms the support layer positioned downstream from the direction of circulation of the fluid being in the form of HEPA.

[00051] In accordance with a preferred form of 15 embodiment, the particulate filter layer 401 is a non-woven fabric composed of synthetic fibres of the type different, preferably polyethylene terephthalate and polypropylene, and the adsorbent filter layer 402 is positioned upstream from the direction of 20 air circulation, both layers being arranged in a star shape and with main axes substantially coincident.

[00052] In accordance with a preferred form of realization, the particulate filter layer 401 is a 25 non-woven fabric composed of synthetic fibres of type different, preferably polyethylene terephthalate and polypropylene, and the adsorbent filter layer 402 is positioned downstream from the direction of air circulation, both layers being 5 arranged in a star shape and with main axes substantially coincident.

[00053] In accordance with a preferred form of construction, each filter septum 4 comprises a hydrophobic layer with tubular geometry positioned 10 fluidically upstream of both filter layers 401, 402.

[00054] In accordance with a preferred form of realization, said hydrophobic layer is in the form of a retina hydrophobic or functionalized non-woven fabric. 15

[00055] In accordance with a preferred form of realization, the respective filter axes Y1-Y1, Y2-Y2 of two filtering partitions 4 extend parallel to each other.

[00056] In accordance with a preferred form of realization, the at least two filtering septa 4 are 20 extend in two opposite directions to the two sides of the device connecting 2.

[00057] In accordance with a preferred form of Construction, the air filtration assembly 1 comprises at least one filter cartridge 3 comprising at least one 25 filter septum 4.

[00058] In a preferred embodiment, The air filtration assembly 1 includes a cartridge filter 3 comprising at least two filtering partitions 4 described above. 5

[00059] In a preferred embodiment, the air filtration assembly 1 comprises a plurality of filter cartridges 3 in which the filter septa 4 above described belong to different, and distinct, cartridges filtering 3. 10

[00060] In accordance with a preferred form of construction, the filter cartridge 3 comprises a flat group 5 removably engageable to the device connecting 2.

[00061] Preferably, said first end 41 of a 15 filter septum 4 is engaged with said flat group 5.

[00062] According to a preferred embodiment, the flat group 5 includes an air vent 50 for the fluid connection of the internal cavity 400 with the connecting device 2, in particular with the 20 entry region 21.

[00063] According to a preferred embodiment, the flat group 5 includes an air vent 50 for the fluid connection of the first end 41 with the connecting device 2, in particular with the 25 entry region 21.

[00064] In accordance with a preferred form of embodiment, the filter cartridge 3 comprises at least two filtering partitions 4, which extend respectively parallel to each other along their respective filter axes Y1- 5 Y1, Y2-Y2, committed to the flat group 5 with the respective first end 41 in correspondence with a respective mouth air 50.

[00065] According to a preferred embodiment, each filter cartridge 3 is engaged cantilevered to the 10 connection device 2.

[00066] In accordance with a preferred form of realization, the flat group 5 extends with respect to an imaginary development plane S and on the opposite sides of said imaginary development plan S includes a first 15 face 51 comprising at least one sealing profile 510 suitable for engaging the connecting device 2 and a second face 52 comprising at least two profiles of feedback 520.

[00067] Preferably, the connecting device 20 2 includes a 25 in housing space correspondence of said input region 21, comprising at least two feedback elements 220.

[00068] Preferably, the two contact elements 220 are axially spaced, that is, the two 25 feedback elements 220 are mutually spaced in a direction orthogonal to the direction of development of the filter septum or filter septa. Preferably, the two longitudinally positioned contact elements 220 spaced apart, that is, the two contact elements 5 220 are mutually spaced in one direction parallel to the direction of development of the filter septum or filtering septa.

[00069] Preferably, the flat group 5 is housed in said housing space 25 with the at least one profile 10 of sealing 510 engaged to seal to the device connection 2, in particular to the entrance region 21 (for example to a wall or to edges included in the said input region 21) and the feedback profiles 520 committed to the respective verification elements 220. 15

[00070] According to a preferred embodiment, the filter cartridge 3 can be used with the device connection 2 along an insertion direction Z substantially parallel to the said imaginary plane of development S. 20

[00071] That is to say that the filter cartridge 3 is housed in the housing space 25 by means of a sliding action.

[00072] According to a preferred embodiment, the at least one sealing profile 510 or the contact profiles 25 520 are shaped or mutually positioned with respect to the imaginary development plan S presented by it, variable vertical distances measured in direction orthogonal to the insertion direction Z, along that Z insertion direction. 5

[00073] Furthermore, according to a preferred form of realization, the at least one sealing profile 510 oi 520 contact profiles are shaped or reciprocally positioned with respect to the imaginary development plane S presenting variable longitudinal distances from it, 10 measured in a direction parallel to the filter axes Y1- Y1, Y2-Y2.

[00074] According to a variant of realization, the profiles of the 520 feedback and the feedback elements 22 include respective contact and thrust surfaces 520', 220' 15 mutually engaging in sliding operations of insertion of the cartridge 3, in which the surfaces of feedback and thrust 520', 220' are shaped, preferably inclined, so that the cartridge 3 is pushed and is held in position in 20 longitudinal direction (i.e. in the direction of development of the filter septum or filter septa) towards the connecting device 2.

[00075] Preferably, the flat assembly 5 comprises a locking organ 59 suitable for snap-engaging the 25 connection device 2.

[00076] In accordance with a preferred form of embodiment, said locking member 59 comprises a button 591 operable, preferably in the direction transversal to the insertion direction Z, to be 5 configured in an unlocked position.

[00077] According to a preferred embodiment, said locking member 59 extends from the first face 51 of the flat group 5 including a stem 590 flexible in a transverse direction to the direction 10 Z insertion.

[00078] Preferably, the locking member 59 is extends from the first face of the flat group 5 including a transversely oriented 590 stem, preferably orthogonally, with respect to the main axis of the septum 15 filter and / or filtering septa 4 engaged / engaged in called flat group 5.

[00079] Preferably, said locking member 59 it is positioned in an intermediate position between two septa filtering 4. 20

[00080] According to a preferred embodiment, said locking organ 59 comprises a profile lateral engagement 592, preferably two profiles lateral engagement 592.

[00081] Preferably, said commitment profile 25 lateral 592 extends in a transverse direction, preferably orthogonal to the direction of insertion Z.

[00082] Preferably, each commitment profile lateral 592 extends in a transverse direction, 5 preferably orthogonal to the direction of insertion Z.

[00083] Preferably, said commitment profile lateral 592 includes an inclined engagement surface with respect to the development axis of the stem 590. 10

[00084] In accordance with a preferred form of realization, the connecting device 2 is configured to cooperate with the locking member 59, preferably, the connecting device 2 is shaped to accommodate the locking organ 59 and for 15 be engageable by engagement profile 592 or profiles of commitment 592.

[00085] According to a preferred embodiment, the flat group 5 includes a handle for gripping the filter cartridge 3. 20

[00086] Preferably, said handle 58 comprises a recess to accommodate the bending of the stem 590 of the locking organ 59 in the engagement phases and cartridge disengagement 3.

[00087] According to a preferred embodiment, the 25 handle 58 is positioned between two filtering partitions 4 belonging to the same filter cartridge 3.

[00088] In accordance with embodiments comprising a number of filtering septa 4 greater than two the filter cartridge 3 comprises a plurality of 5 handles 58.

[00089] According to a preferred embodiment, the air filtration assembly 1 comprises a plurality of filter cartridges 3. Preferably the assembly air filtration 1 includes two filter cartridges 3 10 positioned on both sides of the connecting device 2.

[00090] According to a preferred embodiment, each filter cartridge 3 includes a cap element 6 suitable for closing the end of the filter media tubular 40. 15

[00091] In accordance with a preferred form of realization, the cap element 6 is suitable for engaging and close a plurality of tubular filter media 40.

[00092] According to a preferred embodiment, the cap element 6 comprises a support rib 61 which 20 extends on the opposite side to the septum filter 4 being configured to facilitate support of the respective filter cartridge 3.

[00093] Preferably, said support rib 61 is engageable by, or is suitable for engaging in, further 25 components, for example structural, of the vehicle in a manner such as to rest on them thus limiting the effect of any vibrations.

[00094] In accordance with a preferred form of construction, the air filtration assembly 1 comprising, 5 also, a 9 screen device configured for protect at least two filtering partitions 4 from water and dirty.

[00095] Preferably, the screen device 9 is can be connected to the connecting device 2. 10

[00096] For example, the 9 screen device is suitable for include a portion of the grid, traversable from the air.

[00097] According to a preferred embodiment, the The 9-inch screen device has a substantially box-like shape 15 to completely surround the filter septa.

[00098] In accordance with a preferred form of embodiment, the screen device 9 comprises a imperforated upper wall 90 and at least one wall lateral 96 oriented to allow drainage 20 of the water towards appropriate discharge points.

[00099] Preferably, the screen device 9 also includes at least one opening 91, preferably a plurality of openings 91, for the access of air from filter towards the filter septa 4. 25 [000100] According to a preferred embodiment, the screen device 9 includes a perimeter border 95 a protection of openings from water ingress, preferably suitable for surrounding said openings on at least three sides. 5 [000101] Innovatively, the air filtration assembly and the ventilation system of a vehicle which includes it, described above, fully fulfill the purpose of the present invention overcoming the typical problems of known art. 10 [000102] Advantageously, the air filter assembly is suitable for effectively filtering ambient air from both solid particles, bacteria, harmful gases and / or odors. [000103] Advantageously, the air filter assembly It has large filtering surfaces. 15 [000104] Advantageously, the air filter assembly make effective use of available spaces comprising at least two tubular filtering partitions suitable for operate in parallel filtration. [000105] Advantageously, the position of the septa 20 tubular filters can be adapted to suit the space available present in the vehicle. [000106] Advantageously the filtering septa can have different lengths depending on the spaces. [000107] Advantageously, filter cartridges are 25 suitable for engaging the connecting device and maintain this commitment over time. [000108] Advantageously, the feedback elements and feedback profiles are mutually interacting in way to ensure the engagement between the filter cartridges 5 and the connecting device also in the case of cartridges filters having a plurality of tubular septa, therefore, larger size and weight. [000109] Advantageously, the air filtration assembly guarantees simple and intuitive assembly and a 10 simple and intuitive disassembly. Advantageously, the assembly and disassembly operations of the assembly air filtration are guided and foolproof. [000110] Advantageously, the tubular shape of the septa 4 filters manage to let any drops slide away 15 of water that reaches them. [000111] It is clear that a technician in the sector, in order to meet contingent needs, could bring All changes to the air filter assembly are contained within the scope of protection as defined by the claims 20 following. List of reference numbers: [000112] 1 air filtration assembly 2 connecting device 25 21 entry region 22 exit region 25 storage space 220 items of feedback 220' contact and thrust surface 5 3 filter cartridge 4 filter septum 40 tubular filter media 400 internal cavities 401 particle filter layer 10 402 adsorbent filter layer 41 first end 42 second end 5 flat group 50 mouth air 15 51 first face, sealing face 510 sealing profile 52 second face, counter face 520 feedback profile 520' contact and thrust surface 20 58 handle 59 locking organ 590 stem 591 button 592 commitment profile 25 6 element cap 61 support nerve 9 screen device 90 imperforate upper wall 91 opening 5 95 perimeter edge 96 side wall XX suction axis Y1-Y1, Y2-Y2 filter axis Z direction of insertion 10 S imaginary development plan

Claims

1. An air filtration assembly (1) for a ventilation system, preferably passenger compartment air of a vehicle, comprising an intake assembly, wherein said air filtration assembly (1) comprises: i) a connection device (2), fluidly connectable to an intake assembly, extending in length along an intake axis (XX) between an inlet region (21) and an outlet region (22);ii) at least two filter septa (4), wherein each filter septa (4) extends along a respective filter axis (Y1-Y1, Y2-Y2) between a first end (41) fluidically connected to the connection device (2) and a second closed end (42), wherein each filter septa (4) comprises a tubular filter media (40) which extends around the respective filter axis (Y1-Y1, Y2-Y2), comprising an internal cavity (400), being passable by air from the outside to the inside, wherein said filter media (40) comprises a particulate filter layer (401) and an adsorbent filter layer (402).; 2. Air filtration assembly (1) according to claim 1, wherein in each filter septum (4) the adsorbent filter layer (402) is positioned radially distal from the respective filter axis (Y1-Y1, Y2Y2).

3. Air filtration assembly (1) according to any of the preceding claims, wherein the respective filter axes (Y1-Y1, Y2-Y2) extend parallel to each other.

4. Air filtration assembly (1) according to any of the preceding claims, wherein the at least two filter baffles (4) extend in two opposite directions to the two sides of the connecting device (2).

5. Air filtration assembly (1) according to any of the preceding claims, comprising at least one filter cartridge (3) in which said filtering septa (4) are included in the same filter cartridge (3), or are included in two separate filter cartridges (3).

6. Air filtration assembly (1) according to claim 5, wherein the at least one filter cartridge (3) comprises a flat assembly (5) removably engageable with the connecting device (2), wherein said first end (41) of a filter septum (4) is engaged with said flat assembly (5), wherein the flat assembly (5) comprises an air inlet (50) for the fluidic connection of the internal cavity (400) of the filter septum (4) with the connecting device (2).

7. Air filtration assembly (1) according to claim 6, wherein said filter cartridge (3) comprises at least two filtering septa (4), which extend respectively parallel to each other along respective filter axes (Y1-Y1, Y2-Y2), engaged to the flat assembly (5) with the respective first end (41) in correspondence with a respective air inlet (50).

8. Air filtration assembly (1) according to claim 6 or claim 7, wherein the flat assembly (5) extends with respect to an imaginary plane of development (S) and on opposite sides of said imaginary plane of development (S) comprises a first face (51) comprising at least one sealing profile (510) suitable for engaging the connecting device (2) and a second face (52) comprising at least two abutment profiles (520); wherein the connecting device (2) comprises a housing space (25) at said inlet region (21), comprising at least two abutment elements (220) mutually spaced axially, wherein the flat assembly (5) is housed in said housing space (25) with the at least one sealing profile (510) sealingly engaged to the connecting device (2) and the abutment profiles (520) engaged to the respective abutment elements (220).

9. Air filtration assembly (1) according to claim 8, wherein said filter cartridge (3) is engageable with the connecting device (2) along an insertion direction (Z) substantially parallel to said imaginary development plane (S).

10. Air filtration assembly (1) according to claim 8 or claim 9, wherein the at least one sealing profile (510) or the abutment profiles (520) are shaped or mutually positioned with respect to the imaginary development plane (S) presenting from it, variable vertical distances, measured in a direction orthogonal to the insertion direction (Z), along said insertion direction (Z); and wherein the at least one sealing profile (510) or the abutment profiles (520) are shaped or mutually positioned with respect to the imaginary development plane (S) presenting from it variable longitudinal distances measured in a direction parallel to the filter axis (Y1-Y1, Y2-Y2).

11. Air filtration assembly (1) according to any of claims 8 to 10, wherein the abutment profiles (520) and the abutment elements (22) comprise respective abutment and thrust surfaces (520', 220') which are mutually slidingly engaged during the insertion operations of the cartridge (3), wherein the abutment and thrust surfaces (520', 220') are shaped, preferably inclined, in such a way that the filter cartridge (3) is pushed and held in position in a longitudinal direction towards the connecting device (2).

12. Air filtration assembly (1) according to any one of claims 5 to 11, wherein the flat assembly (5) comprises a locking member (59) adapted to snap-engage the connecting device (2), wherein said locking member (59) comprises a button (591) operable, preferably in a direction transverse to the insertion direction (Z), to be configured in an unlocked position.

13. Air filtration assembly (1) according to any of the preceding claims 5 to 12, comprising a plurality of filter cartridges (3), preferably two filter cartridges (3) positioned on the two sides of the connecting device (2), wherein each filter cartridge (3) comprises a plurality of filter baffles (4).

14. Air filtration assembly (1) according to any of claims 5 to 13, wherein said filter cartridge (3) comprises a cap element (6) sealingly engaged at the second end (42) of each filter media (4), wherein said cap element (6) comprises a support rib (61) extending on the opposite side to that of the filter media (4) being configured to facilitate the support of the respective filter cartridge (3). 5 15. Air filtration assembly (1) according to any of the preceding claims, further comprising a screen device (9), configured to protect the at least two filter media (4) from water and dirt. 10 16.A vehicle ventilation system, comprising an air filtration assembly (1) according to any of the preceding claims, wherein the connecting device (2) is fluidly connected to an air intake assembly, and the air is drawn 15 from the external environment through the air filtration assembly (1).