IT202000028421A1 - FILTER GROUP - Google Patents

Description

DESCRIPTION

Field of application

[0001] The present invention relates to a fluid filter assembly.

[0002] According to a preferred embodiment, the filter group ? specifically suitable for carrying out air filtration operations.

[0003] The context in which the present invention is placed? that of filtering units in the automotive sector. In particular, we refer to those filtering units which can be connected via specific channels and specific manifolds to operating groups of a vehicle or to specific vehicle environments in such a way as to filter the fluid and prevent said operating groups or said environments from being reached by fluids containing unwanted particles.

[0004] To these filtering groups housed in a vehicle? required to be suitable to perform an effective and efficient filtration of the fluid occupying a space as much as possible? content as possible and avoiding constituting an obstacle to the outflow of the fluid towards the operating group or the desired environment.

[0005] In light of the above ? It has been noted that in order to present effective and efficient filtration there was a failure to respond to the other requirements of the technical sector. Conversely, when the filtering groups are created the pi? compact possible these have properties? filters with low effectiveness and low efficiency or act as an obstacle to the outflow of the fluid.

Solution of the invention

[0006] The need to make available a filter unit which is suitable for solving this problem is therefore strongly felt.

[0007] The purpose of the present invention? just to provide a group filter of a fluid that has an?effective and efficient capacity? filtering, exploiting the spaces in an extremely innovative way and not acting as an obstacle to the outflow of the fluid. Preferably, therefore, by solving this aim, the filter unit object of the present invention is particularly suitable for finding application in the automotive sector, being suitable for being housed in the narrow spaces provided on a vehicle.

[0008] This purpose? achieved by the filter assembly claimed in claim 1.

[0009] The dependent claims show preferred embodiments involving further advantageous aspects.

Description of the drawings

[00010] Further characteristics and advantages of the invention will appear from the following description of preferred embodiments thereof, given by way of non-limiting example, with reference to the attached figures in which:

[00011] ? Figures 1a, 1b, 1c and 1d show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00012] ? Figures 2a, 2b, 2c and 2d show a schematization of a preferred embodiment of the filter assembly object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00013] ? figures 3a, 3b, 3c and 3d show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00014] ? figures 4a, 4b, 4c and 4d show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00015] ? Figures 5a, 5b, 5c and 5d show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00016] ? Figures 6a, 6b, 6c and 6d show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00017] ? Figures 7a, 7b, 7c and 7d show a schematization of a preferred embodiment of the filter assembly object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00018] ? figures 8a, 8b, 8c and 8d show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separate parts from above, a perspective view with separate parts from below, a view frontal and longitudinal sectional views;

[00019] ? Figures 9a and 9b show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separated parts from above and a longitudinal sectional view;

[00020] ? figures 10a and 10b show a schematization of a preferred embodiment of the filter unit object of the present invention respectively in a perspective view with separated parts from above and a longitudinal section view;

[00021] ? figure 11 shows a schematization of a preferred embodiment of the filter unit object of the present invention in a perspective view with separate parts from above;

[00022] ? figures 12a, 12b, 12c and 12d show further schematic forms of the filter unit object of the present invention;

[00023] ? Figures 13a, 13b, 13c, 13d, 13e and 13f illustrate still further schematic embodiments of the filter assembly of the present invention;

[00024] ? figure 14 shows an embodiment in detail of a filter assembly object of the present invention, according to a preferred embodiment;

[00025] ? figure 15 represents a detail of a further embodiment of the filter unit object of the present invention, according to a preferred embodiment;

[00026] ? Figures 16a and 16b show further embodiments and some relative details of the filter assembly object of the present invention, according to a preferred embodiment;

[00027] ? figures 17a, 17b and 17c show further embodiments and some relative details of the filter assembly object of the present invention, according to a preferred embodiment;

[00028] ? figures 18a, 18b and 18c show further embodiments and some relative details of the filter assembly object of the present invention, according to a preferred embodiment;

[00029] ? figures 19a, 19b, 19c, 19d and 19e show further embodiments and some relative details of the filter assembly object of the present invention, according to a preferred embodiment.

Detailed description

[00030] In the attached figures, with the reference number 1 ? indicated a filter assembly in accordance with the present invention.

[00031] Said filter group 1 ? passable through filtration by a fluid.

[00032] Preferably, said filter 1 ? passable in filtration by air.

[00033] According to the present invention, the filter assembly 1 comprises a filtration region R in which the filtration of the fluid takes place and therefore the separation from the fluid of unwanted substances or particles.

[00034] The filtration region R extends in length between an inlet area IN through which the fluid to be filtered flows and an outlet area OUT through which the filtered fluid flows.

[00035] As shown in the diagrams and as extensively described below, the filter unit 1 object of the present invention ? suitable for being extremely flexible in its design, construction and implementation, in such a way as to allow the reciprocal positioning of the IN input area and the OUT output area according to the specific needs.

[00036] The filter unit 1 extends along a longitudinal axis X-X, along a transversal axis Y-Y and along a vertical axis V-V.

[00037] In accordance with a preferred embodiment, the longitudinal axis X-X extends in a linear direction.

[00038] In accordance with a preferred embodiment, the longitudinal axis X-X extends in a curvilinear direction (as shown by way of example in figure 11, in figure 12a and in figure 13e).

[00039] In accordance with a preferred embodiment, the longitudinal axis X-X extends in a broken direction (as shown by way of example in figure 12b and in figure 12d ).

[00040] In accordance with a preferred embodiment, the longitudinal axis X-X extends in a mixed manner, presenting linear sections and curvilinear sections (as shown by way of example in figure 12c).

[00041] According to a preferred embodiment, the transversal axis Y-Y ? transversal to the longitudinal axis Y-Y. Preferably, the transversal axis Y-Y ? orthogonal to the longitudinal axis X-X.

[00042] In accordance with a preferred embodiment, the transverse axis Y-Y extends in a linear direction.

[00043] In accordance with a preferred embodiment, the transverse axis Y-Y extends in a curvilinear direction (as shown by way of example in figures 13a, 13b, 13c, 13d, 13e and 13f).

[00044] In accordance with a preferred embodiment, the transverse Y-Y axis extends in a broken direction.

[00045] In accordance with a preferred embodiment, the transversal axis Y-Y extends in a mixed manner, presenting linear portions and curvilinear portions.

[00046] According to a preferred embodiment, the vertical axis V-V extends transversally from the longitudinal axis X-X starting from it. Preferably, it extends transversely to the longitudinal axis X-X and transversely to the transverse axis Y-Y. Preferably, the vertical axis V-V ? orthogonal to an imaginary plane in which both the longitudinal axis X-X and the transversal axis Y-Y lie.

[00047] In accordance with a preferred embodiment, the vertical axis V-V extends in a linear direction.

[00048] In accordance with a preferred embodiment, the vertical axis V-V extends in a curvilinear direction.

[00049] In accordance with a preferred embodiment, the vertical axis V-V extends in a broken direction.

[00050] In accordance with a preferred embodiment, the vertical axis V-V extends in a mixed manner, presenting linear portions and curvilinear portions.

[00051] According to a series of preferred embodiments, the filter unit 1 has a shape such as to develop in length along said longitudinal axis X-X and said transversal axis Y-Y, for example by positioning the input area IN and the output area OUT at two ends? opposite along the longitudinal axis X-X, or by positioning the input area IN at one end? longitudinal and the? area of output OUT at one end? transversal.

[00052] According to a further preferred embodiment, the filter unit 1 comprising a cavity? central C and the filtration region R extends around the cavity? central unit C. In other words, in this embodiment the filter unit 1 has a substantially tubular shape, presenting a substantially cylindrical or conical or frustoconical shape (as shown by way of example in figures 13a, 13b, 13c, 13d, 13e and 13f ).

[00053] In accordance with this preferred embodiment, in a first embodiment, the longitudinal axis X-X extends parallelly along the tubular extension of the filter unit 1, while the transversal axis Y-Y extends in a substantially circumferential direction, and the? V-V vertical axis extends in the radial direction. Preferably, the input area IN and the output area OUT are positioned at two ends. axial along the longitudinal axis X-X: the filter unit 1 operates as an ?axial filter?. In other words, in this embodiment, the input area IN and the output area OUT are located at two ends. longitudinally opposite, or mutually spaced along the longitudinal axis X? X. This first embodiment? shown as an example in figure 13a.

[00054] In accordance with the aforementioned preferred embodiment, in a second embodiment, the longitudinal axis X-X extends substantially radially with respect to the tubular development of the filter unit 1, while the transversal axis Y-Y extends in a substantially circumferential direction, and the vertical axis V-V extends parallel along the tubular development of the filter unit 1. Preferably, the input area IN and the output area OUT are positioned at both ends? radial along the longitudinal axis X-X, that is to say that at least one of the two areas corresponds with the cavity? central unit C: filter unit 1 operates as a ?radial filter?. Preferably, the OUT output area corresponds with the cavity? central unit C, while the input area IN ? radially spaced outside the tubular filter unit 1: the filter unit 1 operates as an external-internal radial filter. This second embodiment? shown as an example in figures 13b, 13c, 13d, 13e and 13f.

[00055] In accordance with the present invention, the filter unit 1 comprises:

- a filtering panel 3 which can be crossed by the fluid being filtered in a direction substantially orthogonal to its development

- a baffle panel 4 impermeable to the fluid;

- an inlet chamber 5 defined between the filter panel 3 and the deflector panel 4.

[00056] In accordance with the present invention, the filtering panel 3 extends with respect to an imaginary plane F which can be crossed by the fluid being filtered in a direction substantially orthogonal to the imaginary plane F.

[00057] According to a preferred embodiment, the filter panel 3 extends substantially planarly.

[00058] According to a preferred embodiment, both the longitudinal axis X-X and the transversal axis Y-Y lie on said imaginary plane F, therefore the shape of the imaginary plane F (ie, linear or curvilinear or serrated) ? function of the shape of the longitudinal axis X-X and the transversal axis Y-Y.

[00059] Filter panel 3 ? therefore passable through filtration by the fluid in its thickness. Preferably, the filter panel 3 ? traversable in filtration by the fluid in a direction substantially parallel to the vertical axis V-V.

[00060] According to a preferred embodiment of the present invention, the inlet chamber 5 ? open in a region proximal to the input area IN and ? closed in a region proximal to the output area OUT.

[00061] Preferably, therefore, the inlet chamber 5 is open only and exclusively in a region proximal to the inlet area IN, while ? closed in a region proximal to the outlet area OUT in such a way that the fluid? forced to pass through the filter panel 3.

[00062] According to a preferred embodiment of the solution object of the present invention, the coupling between the filter panel 3 and the deflector panel 4 is such as to define an inlet chamber 5 shaped in such a way as to include a first inlet area I1 corresponding to a first section substantially orthogonal to the imaginary plane F in a region proximal to the inlet area IN and a second inlet area I2 corresponding to a second section substantially orthogonal to the imaginary plane F in a region distal to the input area IN.

[00063] Preferably, the first input area I1 ? greater than the second input area I2.

[00064] In other words, the coupling between the filter panel 3 and the deflector panel 4 ? such as to define an inlet chamber 5 having a larger passage section in the vicinity? of the IN input area and a minor passage section in the vicinity? of the OUT output area.

[00065] As shown in the attached tables, and fully described below, there is ? obtained from particular shapes of the deflector panel 4, for example by comprising specific portions with a tapered shape or by comprising a greater number of components suitable for allowing the flow of the fluid in a region proximal to the inlet area IN with respect to the number of components present in a region proximal to the OUT output area.

[00066] This particular preferred embodiment? such as to allow a better access of fluid in the inlet chamber as well as? ? such as to make it work in a more homogeneous as possible the filter cake 3.

[00067] In accordance with a preferred embodiment, the filter unit 1 comprises a pair of fluid-impermeable deflector panels 4, positioned on the two opposite faces of the filter panel 3.

[00068] Preferably, the first deflector panel 4 and the filter panel 3 define said inlet chamber 5.

[00069] Preferably, the filter panel 3 and the second baffle panel 4 define an outlet chamber 6 which is open in a region proximal to the OUT output area and ? closed in a region proximal to the IN input area.

[00070] According to a preferred embodiment, the filter assembly 1 comprises a pair of filter panels 3, wherein in the space between two filter panels ? positioned the deflector panel 4 in such a way that between the first filtering panel 3 and the deflector panel 4 ? defined said inlet chamber 5 and in such a way that between the second filter panel 3 and the deflector panel 4 ? defined an exit chamber 6.

[00071] Preferably, also in this embodiment, said outlet chamber 6? open in a region proximal to the OUT output area and ? closed in a region proximal to the IN input area.

[00072] According to a preferred embodiment, the coupling between the filter panel 3 and the deflector panel 4 is such as to define an outlet chamber 6 shaped in such a way as to include a first outlet area O1 corresponding to a first section substantially orthogonal to the imaginary plane F in a region proximal to the inlet area IN and a second outlet area O2 corresponding to a second section substantially orthogonal to the imaginary plane F in a region proximal to the outlet area OUT.

[00073] Preferably, the first output area O1 ? smaller than the second O2 output area.

[00074] In other words, the coupling between the filter panel 3 and the deflector panel 4 ? such as to define an outlet chamber 6 having a smaller passage section in the vicinity? of the IN input area and a larger passage section in the vicinity? of the OUT output area.

[00075] As shown in the attached tables, and fully described below, there is ? obtained from particular shapes of the deflector panel 4, for example by comprising specific portions with a tapered shape or by comprising a greater number of components suitable for allowing the flow of the fluid in a region proximal to the outlet area OUT with respect to the number of components present in a region proximal to the IN input area.

[00076] This particular preferred embodiment? such as to allow a better output of the filtered fluid from the filter panel 3, as well as? ? such as to make it work in a more homogeneous as possible said filter panel 3.

[00077] In accordance with some embodiments, the outlet chamber 6 ? complementary to the entrance chamber 5.

[00078] In accordance with this preferred embodiment, in a complementary manner to the input channels 500 described below, the deflector panel 4 delimits specific, complementary, output channels 600.

[00079] According to a preferred embodiment, the input area IN and the output area OUT are spatially positioned according to the shape or position of the deflector panel 4 which delimits the output chamber 6 (as exemplified schematically in the figures 10a and 10b).

[00080] In accordance with a preferred embodiment of the present invention, the filter unit 1 comprises a plurality of of filter panels 3 and a plurality? of deflector panels 4 stacked parallel to the direction of the vertical axis V-V.

[00081] In accordance with a preferred embodiment, the filter assembly 1 comprises a plurality of of filter panels 3 and a plurality? of deflector panels 4 stacked parallel to the direction of the vertical axis V-V so as to form a plurality? of 5 entrance rooms and a plurality? of outlet chambers 6 crossed in parallel by the working fluid.

[00082] In accordance with a preferred embodiment, the inlet chambers 5 and the outlet chambers 6 have the same height.

[00083] In accordance with a preferred embodiment, the filter unit 1 comprises a plurality of of 5 entrance rooms and a plurality? of outlet chambers 6 having different heights.

[00084] In accordance with a preferred embodiment, the filter assembly 1 comprises a plurality of of filter panels 3 and a plurality? of deflector panels 4 stacked parallel to the direction of the vertical axis V-V so as to form a plurality? of inlet chamber 5 and outlet chambers 6 arranged so as to form two filtering portions which can be crossed in series by the working fluid. In particular, each filtering portion comprises a plurality? of inlet chambers 5 and outlet chambers 6 crossed in parallel by the working fluid.

[00085] In other words, preferably, are alternated along said vertical axis V-V a plurality of filtering panels 3 and deflector panels 4 in such a way as to identify a multiplicity? of inlet chambers 5 and of outlet chambers 6.

[00086] With ?panel? in the present discussion we mean a component that develops mainly along two preferential directions.

[00087] In accordance with a preferred embodiment, the filter panel 3 and the deflector panel 4 have the same substantially square shape. In this case, the filter group 1 resulting from the stacking of a plurality? of filtering panels 3 and deflecting panels 4 has a cubic shape.

[00088] In accordance with a preferred embodiment, the filter panel 3 and the deflector panel 4 have the same substantially rectangular shape. In this case, the filter group 1 resulting from the stacking of a plurality? of filtering panels 3 and baffle panels 4 has a parallelepiped shape.

[00089] In accordance with a preferred embodiment, the filter panel 3 and the deflector panel 4 have the same discoidal shape. In this case, the filter group 1 resulting from the stacking of a plurality? of filter panels 3 and deflector panels 4 has a cylindrical shape.

[00090] In accordance with a preferred embodiment, the filter panel 3 ? a leaf-like filter media of porous filter material.

[00091] According to a preferred embodiment, the filter panel 3 is a non-woven filter media.

[00092] Preferably, the filter panel 3 ? made from a non-woven fabric comprising fibers of polyester and/or polypropylene and/or polyamide and/or polyacrylate and/or viscose and/or rayon and/or any combination thereof.

[00093] Preferably, the filter panel 3 ? a septum filter depth? made in the form of a flat sheet.

[00094] In accordance with a preferred embodiment, the filter panel 3 ? made of a non-woven fabric having a permeability? between 150 and 950mm/s, preferably between 550 and 700mm/s (measured at 200 Pa).

[00095] Preferably, the filter panel 3 ? single layer.

[00096] Preferably, the filter panel 3 ? of the multilayer type.

[00097] Preferably, the filter panel 3 comprises a first filter layer made of permeable non-woven fabric, with permeability? between 750 and 900 mm/s (at 200 Pa), coupled with a second filtering layer in non-woven fabric with permeability? lower, between 150 and 200 mm/s (at 200 Pa).

[00098] In accordance with a preferred embodiment, the filter panel 3 comprises a third filter layer positioned between the two outer layers and having a permeability? intermediate, between 250 and 300 mm/s (at 200 Pa).

[00099] In accordance with a preferred embodiment, the filter panel 3 contains adsorbent substances inside itself, such as activated carbons and/or ion exchange resins and/or zeolites.

[000100] Preferably, the filter panel 3 comprises a filter layer suitable for particle filtration and an adsorbent layer suitable for adsorption of gaseous contaminants. Preferably, the filter layer ? positioned upstream of the adsorbent layer with respect to the crossing direction of the fluid. Preferably, the adsorbent layer comprises a plurality of of adsorbent substances such as activated carbon and ion exchange resins.

[000101] According to a preferred embodiment, the filter panel 3 comprises a filter layer suitable for particle filtration and a plurality of of adsorbent layers comprising respective adsorbent elements.

[000102] According to a preferred embodiment, the filtering panel 3 has an ISO5011 filtering efficiency greater than 99% (ISO FINE).

[000103] According to a preferred embodiment, the filter panel 3 has a thickness of between 0.5 and 3 millimeters (measured according to ASTM D5729 - 1997), preferably the filter panel 3 has a thickness of between 1.5 and 2 mm, 8mm.

[000104] In accordance with a preferred embodiment, the baffle panel 4 is a leaf-like element made of a material belonging to the family of plastic materials.

[000105] In accordance with a preferred embodiment, the deflector panel 4 contains adsorbent substances inside it, for example activated carbons.

[000106] According to a preferred embodiment, the deflector panel 4 has a thickness of less than 1, preferably between 0.1 and 0.5 mm, preferably the deflector panel has a thickness of 0.2 mm.

[000107] According to a preferred embodiment, the baffle panel 4 is worked through thermoforming process.

[000108] In accordance with a preferred embodiment, the filter panel 3 comprises an inlet filter edge 31 and an outlet filter edge 32.

[000109] Furthermore, the filter panel 3 comprises side edges 34 which connect the inlet filter edge 31 and the outlet filter edge 32.

[000110] Preferably, input filter edge 31 ? proximal, preferably facing, the input area IN and the output filter edge 32 ? proximal, preferably facing, to the OUT outlet area.

[000111] Similarly, preferably, the baffle panel 4 comprises an inlet baffle edge 41 and an outgoing baffle edge 42.

[000112] Furthermore, the baffle panel 4 includes baffle side surfaces 44.

[000113] Preferably, inlet deflector edge 41 ? proximal, preferably facing, the inlet area IN and the outlet deflector edge 42 ? proximal, preferably facing, to the OUT outlet area.

[000114] In accordance with a preferred embodiment, said outlet deflector edge 42 seals the filter panel 3.

[000115] Preferably, the outlet panel edge 42 hermetically engages the outlet filter edge 32 closing the inlet chamber 5.

[000116] According to a preferred embodiment, the trailing panel edge 42 comprises a trailing edge portion 420 comprising a recess housing 421 in which the outlet filter edge 32 is housed.

[000117] In particular, preferably, the output filter edge 32 ? stapled in the cavity? of housing 421.

[000118] Preferably, therefore, the trailing edge portion 420 closes and blocks the flow of the fluid passing through the thickness of the filter panel 3.

[000119] In accordance with other embodiments, the deflector panel 4 hermetically engages the filter panel 3, with the purpose of defining the outlet chamber 6, also by means of the inlet deflector edge 41.

[000120] In accordance with a preferred embodiment, as shown by way of example in figures 18a, 18b and 18c, the baffle panel 4 comprises, in a region proximal to the outlet area OUT, a portion shaped in such a way as to present the sealing engagement on the first filtering panel 3 superimposed along the vertical axis to the sealing engagement on the second filtering panel 3 thus performing the the fluid closure of the inlet chamber 5.

[000121] According to a preferred embodiment, the inlet deflecting edge 41 engages the filter panel 3 with an inlet edge portion 410 comprising a recess of inlet housing 411 in which the inlet filter edge 31 of said filter panel 3 is housed.

[000122] Preferably, similarly to the shaped portion described above, the deflector panel 4 comprises, in a region proximal to the inlet area INT, a portion shaped in such a way as to present the sealing engagement on the first filtering panel 3 aligned along the ?vertical axis to the sealing engagement on the second filtering panel 3 thus performing? the fluid closure of the outlet chamber 6, but allowing entry to the inlet chamber 5 (as shown by way of example in figures 17a, 17b and 17c).

[000123] In accordance with a preferred embodiment, the inlet filter edge 31? stapled in the cavity? of input slot 411.

[000124] Preferably, therefore, the inlet edge portion 410 closes and blocks the flow of the fluid passing through the thickness of the filter panel 3.

[000125] In accordance with a preferred embodiment, the lateral surfaces of the deflector 44 engage the filter panel 3 in a sealed manner.

[000126] In accordance with a preferred embodiment, the lateral surfaces of the deflector 44 seally engage the lateral edges 34 of the filter panel 3.

[000127] Preferably, the entrance chamber 5 ? then closed on three sides at the side surfaces of the baffle 44 and at the trailing edge of the baffle 42.

[000128] Preferably, the outlet chamber 6 ? then closed on three sides at the side surfaces of the deflector 44 and at the leading edge of the deflector 41.

[000129] According to a preferred embodiment, said lateral deflector surfaces 44 extend in height substantially parallel to the vertical axis V-V.

[000130] According to a preferred embodiment, each lateral deflector surface 44 comprises a support foot 440 substantially parallel to the imaginary plane F, suitable for sealingly engaging the filter panel 3.

[000131] Preferably, the inlet deflecting edge 41 and/or the outlet deflecting edge 42 comprise respective support steps substantially parallel to the imaginary plane F suitable for sealingly engaging the filter panel 3.

[000132] In accordance with a preferred embodiment, the lateral deflector surfaces 44 comprise a protruding lateral portion 441 suitable for extending beyond the filtering panel 3 on the opposite side with respect to that in which the coupling between the deflector panel 4 and the filtering panel 3 defines the inlet chamber 5. Preferably, the projecting side portion 441 of a baffle panel 4? suitable for engaging the subsequent deflector panel 4 allowing it to be stacked in the vertical direction. Preferably, the projecting side portion 441 of a baffle panel 4 is suitable to engage the following deflector panel 4 in such a way that the mutual engagement between two deflector panels 4 is sealed (as shown by way of example in figure 15.

[000133] According to a preferred embodiment, in the space between two filtering panels 3? positioned the deflector panel 4 in such a way as to hermetically engage both the first filter panel 3 and the second filter panel 3 with the lateral deflector surfaces 44.

[000134] Preferably, the deflector side surface 44 is shaped in such a way as to present the sealing engagement on the first filter panel 3 aligned along the vertical axis V-V with the sealing engagement on the second filter panel 3. In other words, also the lateral surfaces of the deflector 44 have a preferred shape similar to the one illustrated with reference to the output regions of figures 18a, 18b and 18c.

[000135] In accordance with a preferred embodiment, the baffle panel 4 is shaped including a plurality? of alternating walls 40 suitable for defining in the inlet chamber 5 a plurality? of 500 input channels.

[000136] Preferably, each inlet channel 500 comprises an inlet mouth 501 proximal to the inlet area IN and a filtration region 502 facing the filtering panel 3.

[000137] In this way the fluid ? channeled at the input along each input channel 500, up to the filtering region 502 facing the filtering panel 3.

[000138] According to a preferred embodiment, each alternating wall 40? connected to the next alternating wall in a tip portion 401 and ? connected to the previous alternating wall in a bottom portion 402.

[000139] Preferably, said tip portions 401 and/or said bottom portions 402 are mutually connected in an arcuate manner.

[000140] In some preferred embodiments, said tip portions 401 and/or said bottom portions 402 comprise specific support planes.

[000141] In accordance with a preferred embodiment, the respective bottom portions 402 of the deflector panel 4 rest on the filter panel 3.

[000142] In accordance with a preferred embodiment, the respective tip portions 401 are engaged by a filter panel 3.

[000143] Preferably, therefore, the deflector panel 4 also acts as a reinforcing and support element for the filtering panels 3.

[000144] According to a preferred embodiment, the inlet channels 500 delimited by the deflector panel 4 have different lengths from each other comprising primary inlet channels 500 which extend starting from the inlet area IN up to a region proximal to the area output OUT.

[000145] According to a preferred embodiment, the input channels 500 delimited by the baffle panel 4 comprising auxiliary input channels 500 which extend from the input area IN to a region distal from the output area OUT.

[000146] According to a preferred embodiment, the baffle panel 4 comprises primary input channels 500 and auxiliary input channels 500.

[000147] According to a preferred embodiment, the inlet channels 500 delimited by the deflector panel 4 have a variable pitch along the transversal axis Y-Y (as for example exemplified in figure 12a.

[000148] Preferably, the pitch of the input channels 500 ? function of the very nature of the aforementioned channels.

[000149] Preferably, for example, the pitch of the input channels 500 ? function of the length of the inlet channels 500 by having baffle panel portions with a greater number of channels in the region where there are inlet channels 500 of shorter length than in baffle panel portions where there are primary inlet channels 500 of greater length.

[000150] According to a preferred embodiment, the baffle panel 4 transversally alternates primary input channels and auxiliary input channels (as shown by way of example in figure 13f).

[000151] This preferred embodiment, ? particularly exploited on embodiments, with filtering panels 3 having development with respect to longitudinal axes X-X or with respect to transversal axes Y-Y of the non-linear type, for example curvilinear.

[000152] In a completely analogous but complementary manner, the same considerations described for the input channels 5 are present for the output channels 600 defined by the deflector panel 4: for example where the input ducts 500 have a trend which gets smaller as the in section, the outlet ducts 600 expand by enlarging their own section; for example where primary inlet ducts are located, auxiliary outlet ducts correspond, and vice versa, where auxiliary inlet ducts are located, primary outlet ducts correspond.

[000153] According to the preferred embodiment with a cylindrical filter unit 1 and radial flow, the filter panel 3 has the shape of a disc.

[000154] According to this embodiment, the deflector panel 4 has the shape of a disk.

[000155] Preferably, the filter panel 3 and the deflector panel 4 are mutually engaged defining an inlet chamber 5 having an annular shape.

[000156] Preferably, the filter panel 3 and the baffle panel 4 are mutually engaged to define an outlet chamber 6 of annular shape.

[000157] Preferably, the deflector panel 4 has channels oriented in the radial direction. Preferably, the baffle panel 4 defines radially oriented input channels 500. Preferably, the baffle panel 4 defines radially oriented outlet channels 600 (as shown in Figs. 13b to 13f ).

[000158] In accordance with an alternative embodiment the deflector panel 4 defines passage channels with spiral geometry in the inlet chamber 5 and/or in the outlet chamber 6 (as shown in figure 13e ).

[000159] In accordance with a preferred embodiment, the alternating walls 40 have an incident pattern, so as to delimit inlet channels 500 with a tapered pattern.

[000160] In accordance with a preferred embodiment, the alternating walls 40 have an incident pattern, so as to delimit outlet channels with a tapered pattern.

[000161] According to a preferred embodiment, the deflector panel 4 or the alternating walls 40 comprise deflector elements 409, in such a way as to delimit inlet channels 500 with a tapered course.

[000162] Preferably, the deflector elements 409 are suitable for acting as a chute for the fluid towards the filter panel 3.

[000163] In accordance with yet another embodiment, the filter assembly 1 comprises a container body 2 suitable for containing the filtration region R, containing the at least one filter panel 3 and the at least one baffle panel 4.

[000164] Substantially, the container body has such a shape as to identify the input area IN and the output area OUT to and fluidly connect them through the filtration region R, inside which the filtering panels 3 and the deflector panels 4 are housed .

[000165] Furthermore, according to a preferred embodiment, the container body 2 comprises a perimeter gasket 20 which extends around the at least one filtering panel 3 and the at least one deflector panel 4, in such a way as to define the area of IN input.

[000166] In accordance with the diagrams attached, and according to the relative needs? specifications of the designer, for example as a function of the spaces present in the vehicle, some characteristics described and shown in a preferred embodiment are also present in other embodiments.

[000167] Preferably, in the schematic figures from figure 1 to figure 13f, the deflector panels 4 are shown substantially planar, but according to the needs? they have the described wavy shape in such a way as to be suitable for defining the respective input channels 500 and the respective output channels 600 described above as shown in figures 14 to 19e.

[000168] Innovatively, the filter unit largely fulfills the object of the present invention by overcoming the typical problems of the prior art.

[000169] Advantageously, in fact, the filter group ? suitable for filtering the fluid in an extremely effective and efficient manner, not acting as an obstacle to the flow of the fluid, but rather favoring its motion in a substantially main direction of connection between the inlet area and the outlet area.

[000170] In fact, advantageously, the filter unit has a large inlet surface and a large outlet surface, but at the same time it has large filtering surfaces.

[000171] Advantageously, the deflector panel favors the flow of incoming fluid and favors the outflow of the outgoing fluid. Advantageously, the deflector panel minimizes the pressure drops imposed on the system in which it is installed.

[000172] Advantageously, the deflector panel distributes the flow rate of fluid which hits the filtering panel, improving the exploitation of the available filtering surface.

[000173] Advantageously, the deflector panel gives solidity to the filter unit.

[000174] Advantageously, the deflector panel comprises an inlet edge which engages the filtering panel, improving the fluid dynamics of the filter assembly, in particular by reducing the pressure drops at the entrance to the inlet chamber.

[000175] Advantageously, the deflector panel comprises a trailing edge which engages the filter panel, improving the fluid dynamics of the filter assembly, in particular by reducing the pressure drops at the mouth of the outlet chamber.

[000176] Advantageously, the baffle panel comprises edge portions which engage the filter panel, simplifying the separation between each inlet chamber and each outlet chamber.

[000177] Advantageously, the filter group ? modular and ? simply adaptable to the needs? design by exploiting all the aforementioned advantages.

[000178] Advantageously, the filter assembly allows the available filtering surface to be easily modulated by selecting the number of filtering panels, deflector panels and/or acting on their dimensions, such as for example their length.

[000179] Advantageously, at the design level, ? easily and faithfully determinable the behavior of the filtering panel cos? to produce effective and efficient filter assemblies. Advantageously, performance losses of the filtering panel typically due to bending/deformation operations are avoided. In this solution, in fact, the filter panel is used in the form of a flat sheet similar to the experimental conditions in which it is tested and developed.

[000180] Advantageously, the filter panels do not require multiple manufacturing operations, such as for example filter panels comprising pleated paper filters.

[000181] Advantageously, the production costs of the filtering panels and of the filter assembly are extremely low.

[000182] Advantageously, the filtering panels have a porous and permeable structure, thus managing to to accumulate the contaminant in their thickness.

[000183] Advantageously, the passage channels are formed on the baffle panel keeping the structure of the filtering panel simple on which no bending and/or deformation operations need to be performed.

[000184] Advantageously, since they do not have to undergo bending operations, the filtering panels have a permeable, voluminous and relatively thick filtering structure which can be exploited for the accumulation of contaminant in the thickness of the filtering panel.

[000185] Advantageously, since they do not have to undergo folding operations, the filtering panels can have a multilayer structure, for example comprising at least one filtering layer and at least one adsorbent layer thus allowing to obtain with relative simplicity a multifunctional filter structure, avoiding folding processes.

[000186] It is clear that a technician in the sector, in order to satisfy contingent needs, could make modifications to the invention, all of which are contained in the scope of protection as defined by the following claims.

Reference number list:

[000187]

1 filter group

2 container body

20 perimeter gasket

3 filter panel

31 inlet filter board

32 output filter board

34 side edge filter

4 baffle panel

40 alternating walls

401 tip portions

402 bottom portions

41 inlet baffle edge

410 leading edge portion

411 cavity? of input housing

42 outlet baffle edge

420 trailing edge portion

421 cavities? of output slot

44 baffle side surfaces

440 support foot

441 projecting side portion 49 baffle member

5 entrance chamber

500 channel input

501 entrance mouth

502 filtration region

6 exit chamber

600 output channels

X-X longitudinal axis

Y-Y cross axis

V-V vertical axis

IN entrance area

OUT output area

R filtration region

F imaginary plane

A1 first entrance area

A2 second input area O1 first output area

O2 second exit area

C cavity? central

Claims (18)

1. A filter assembly (1) which can be filtered through by a fluid, preferably air, wherein the filter assembly (1) comprises a filtration region (R) which extends between an inlet area (IN) through the which fluid to be filtered flows, and an outlet area (OUT) through which the filtered fluid flows, in which the filter assembly (1) extends along a longitudinal axis (X-X), along a transversal axis (Y-Y) and , in height, along a vertical axis (V-V); whose filter group (1) includes: - a filter panel (3) which extends with respect to an imaginary plane (F) on which both the longitudinal axis (X-X) and the transversal axis (Y-Y) lie, in which said filter panel (3) is? traversable by the filtrating fluid in a direction substantially orthogonal to the imaginary plane (F), substantially parallel to the vertical axis (V-V); - a baffle panel (4) impermeable to the fluid; - an inlet chamber (5) defined between the filtering panel (3) and the deflector panel (4), wherein the inlet chamber (5) ? open in a region proximal to the entrance area (IN) and ? closed in a region proximal to the exit area (OUT); in which the coupling between the filter panel (3) and the deflector panel (4) ? such as to define an inlet chamber (5) shaped in such a way as to include a first inlet area (I1) corresponding to a first section substantially orthogonal to the imaginary plane (F) in a region proximal to the inlet area (IN) and a second inlet area (I2) corresponding to a second section substantially orthogonal to the imaginary plane (F) in a region distal to the inlet area (IN), in which the first inlet area (I1) is? greater than the second input area (I2). The filter assembly (1) according to claim 1, wherein the filter panel (3) comprises an inlet filter edge (31) and an outlet filter edge (32), wherein the baffle panel (4) comprises an inlet baffle edge (41) and an outlet baffle edge (42); wherein the outlet deflector edge (42) is tightly engaged to the filter panel (3), preferably ? tightly engaged to the edge of the outlet filter (32). The filter assembly (1) according to claim 2, wherein the trailing deflector edge (42) engages the filter pad (3) including a trailing edge portion (420) comprising a recess for the filter panel (3). housing (421) in which the outlet filter edge (32) is housed. 4. Filter unit (1) according to any one of the preceding claims, comprising a pair of filter panels (3), wherein in the space between two filter panels ? positioned the deflector panel (4) in such a way that between the first filtering panel (3) and the deflector panel (4) ? defined said inlet chamber (5) and in such a way that between the second filter panel (3) and the deflector panel (4) ? an outlet chamber (6) defined, wherein the outlet chamber (6) ? open in a region proximal to the exit area (OUT) and ? closed in a region proximal to the entrance area (IN). The filter assembly (1) according to claim 2 and claim 4, wherein the inlet baffle edge (41) of the baffle board (4) engages the second filter board (3) tightly, preferably ? tightly engaged to the edge of the inlet filter (31). The filter assembly (1) according to claim 5, wherein the inlet baffle edge (41) engages the filter pad (3) including a leading edge portion (410) comprising a cavity? housing (411) in which the inlet filter edge (31) of said filter panel (3) is housed. 7. Filter assembly (1) in accordance with any one of the preceding claims, comprising a pair of fluid-impermeable baffle panels (4), positioned on the two opposite faces of the filter panel (3), wherein the first baffle panel (4) and the filter panel (3) define said inlet chamber (5), wherein the filter panel (3) and the second baffle panel (4) define an outlet chamber (6) which ? open in a region proximal to the exit area (OUT) and ? closed in a region proximal to the entrance area (IN). 8. Filter assembly (1) in accordance with any one of claims from 4 to 7, wherein the coupling between the filter panel (3) and the deflector panel (4) is ? such as to define an outlet chamber (6) shaped in such a way as to include a first outlet area (O1) corresponding to a first section substantially orthogonal to the imaginary plane (F) in a region proximal to the inlet area (IN) and a second outlet area (O2) corresponding to a second section substantially orthogonal to the imaginary plane (F) in a region proximal to the outlet area (OUT), in which the first outlet area (O1) is? smaller than the second exit area (O2). 9. Filter assembly (1) according to any one of claims 4 to 8, wherein the inlet area (IN) and the outlet area (OUT) are spatially positioned as a function of the shape or position of the baffle panel (4) which delimits the outlet chamber (6). 10. Filter unit (1) in accordance with any one of the preceding claims, comprising a plurality? of filtering panels (3) and comprising a plurality? of deflector panels (4) stacked parallel to the direction of the vertical axis (V-V). The filter assembly (1) according to any one of the preceding claims, wherein the baffle panel (4) is? shaped including a plurality? of alternating walls (40) suitable for defining in the inlet chamber (5) a plurality? of inlet channels (500), wherein each inlet channel (500) comprises an inlet mouth (501) proximal to the inlet area (IN) and a filtration region (502) facing the filter panel (3) , wherein the first input area (I1) corresponds with the sum of said input ports (501). The filter assembly (1) according to claim 11, wherein each alternating wall (40) is connected to the next alternating wall in a tip portion (401) and ? connected to the previous alternating wall in a bottom portion (402), in which preferably a filtering panel (3) ? suitable to rest on said bottom portions (402) or on said tip portions (401). The filter assembly (1) according to any one of claims 11 to 12, wherein the inlet channels (500) delimited by the baffle panel (4) have different lengths from each other comprising primary inlet channels (500) which extend from the input area (IN) up to a region proximal to the output area (OUT) and auxiliary input channels (500) which extend from the input area (IN) up to a distal region from the exit area (OUT) 14. Filter assembly (1) according to any one of claims 10 to 13, wherein the inlet channels (500) delimited by the baffle panel (4) have a variable pitch along the transversal axis (Y-Y). The filter assembly (1) according to any one of claims 10 to 14, wherein two alternating walls (40) have an incident pattern or the baffle panel (4) comprises baffle elements (409), so as to delimit channels input (500) with a tapered shape. 16. Filter unit (1) according to any one of the preceding claims, wherein the filter panel (3) is a sheet-like filter media of single or multi-layered porous filter material. The filter assembly (1) according to any one of the preceding claims, wherein the baffle panel (4) is? a non-permeable element made of a material belonging to the family of plastic materials. 18. Filter unit (1) in accordance with any one of claims 16 or 17, wherein the filter panel (3) and/or the baffle panel (4) contain adsorbent substances inside them, for example activated carbons.