DE102009011059A1 - Air purification apparatus for purifying and/or filtering air in closed rooms, preferably passenger compartments and/or cabins of motor vehicles, comprises filter unit and air-conveying device - Google Patents

Abstract

An air purification apparatus (1) comprises a filter unit (2) and an air-conveying device (3) for flowing air through the filter unit. The filter unit includes filter elements (4a,4b), which are fixed to a support with particulate adsorbents to adsorb odors and/or pollutants.

Description

The The present invention relates to an air cleaning device according to the preamble of claim 1, which in particular for the purification or Filtering of air (ie in particular for the treatment of air) in particular closed rooms, preferably for Passenger cells or cabins of motor vehicles, is suitable. Farther The present invention relates to the use of the invention Air purification device for the purification or filtration of air in particular closed rooms and a method for purifying or filtering air using the invention Air purification device.

In Rooms where there is little or no air exchange takes place, as for example for passenger compartments or Cabins of motor vehicles, there are often high levels of odor and pollutants, especially when in the passenger compartments or cabins smoked or eaten. As a particularly unpleasant is associated with health risks cigarette smoke or Tobacco smoke felt, which often still over days and Perceptible after weeks of cigarette or tobacco consumption and is disturbing. In addition, from interior furnishings, such as B. vehicle seats, dashboards, door panels or the like, odors or pollutants released into the environment be, which is equally disadvantageous. In addition, come next the aforementioned odor or pollutant sources in particular at Motor vehicles are still pollutants from road traffic, as exhaust gases, particulate matter or the like, which in the interior can penetrate motor vehicles. The previously mentioned Odors and pollutants can lead to negative effects, such as feeling unwell, headache, lack of concentration and even cause serious health risks.

Also a high (air) humidity in rooms with low air exchange often leads to an odor nuisance, which especially associated with an infestation of mold fungi, which can lead to a high load of air with spores. Spoiled foods or the like can be closed Rooms lead to an unpleasant odor nuisance. Also, pollen and other allergens present in the air form one further source of stress.

The The problem described above is especially for passenger compartments or cabins of motor vehicles seriously, since here a relative small space or air volume is present and the exchange with outside air not always effective. For one thing is the air exchange through limited the ventilation system of a vehicle, and on the other can the outside air itself with odors or pollutants be enriched, as it is z. B. in heavy traffic Case can be. In addition, the ventilation system is not active when not operating the motor vehicle and thus in the room existing odors or pollutants are not transported away can, so that the odor or pollutants can fix in the interior, so to speak. Especially in passenger compartments or cabs of motor vehicles occur disturbing odors or high pollutant concentrations often in high concentrations on, which is also due to that the small volume of space or air odors or pollutants not can be sufficiently diluted especially since every occupant of a motor vehicle is only a very small volume of space or air is available.

moreover can also odor or pollutants in the interior fittings a motor vehicle, for example, in the seats, and penetrate thus remain in the vehicle for a long time or after contamination, only slowly back into the air of the interior ("cold cigarette smoke"). Such loaded vehicles often have a lower sales value on.

In the prior art, filtration systems are known for improving the internal air of rooms, which can be made in the manner of a separate unit, for example in the interior of a motor vehicle and operated there. Such systems are used in particular when the vehicle is not in operation, for example overnight. In this connection, devices are known in the prior art which extract moisture from the air in order to counteract mold formation in this way. But such systems are not effective in terms of neutralization tion or removal of pollutants and / or odors. In addition, particulate filters for interiors are known, which, however, are optimized only in terms of removal or retention of dust or suspended matter, so that odors or pollutants as such of such systems can not be effectively removed from the interior of a motor vehicle. In addition, filter systems are known in the prior art, which rely on adsorbents. In these systems, however, the adsorbents are often present, for example in the form of a loose bed, which is disadvantageous in terms of adsorption performance and the handling of the system, especially since such filters tend to form a lane and also clog quickly. In addition, the air filters of the prior art are not always optimized in terms of flow, so that mitun ter result in this light non-optimal filter performance.

In front This technical background is an object of the present invention Invention accordingly in an air purification device for processing or Purification or filtration of air for especially closed To provide rooms, which have the disadvantages described above of the prior art, at least largely avoids or at least weakens. In particular, such should Air purifier the high requirements in terms of Removal of pollutants, odors and toxins from the cleaned up Air in the interior use meet. In addition, such a System be designed to be mobile and easy to handle feature.

The previously described task is within the scope of the present Invention solved by the air cleaning device according to claim 1. Further, advantageous embodiments of the invention Air purification device are the subject of the relevant Dependent claims.

Another The present invention is the subject of the invention Use of the air purification device for cleaning or filtering of air in particular closed rooms according to claim 39. Further, advantageous embodiments of the invention Use are the subject of the dependent claims.

After all is another object of the present invention, the method for the purification or filtration of air in particular closed Spaces according to claim 42.

The Applicant has now surprisingly found that solved the above-described problem can be that according to the invention a Air purification device is provided, which is a filter device and an air conveying device for the flow through the filter device having air, wherein the filter device at least a filter element with fixed on a carrier particulate Adsorbents for the adsorption of odors or pollutants. The air cleaning device according to the invention has a high efficiency in the removal of odors and toxic or pollutants from the air, so that the air cleaning device according to the invention in particular for the treatment or purification or filtration of Air in particular closed rooms, such as passenger compartments or Cabins of motor vehicles, is suitable. Due to the special design the filter device has the inventive Air purification device both filter and filtration properties, d. H. Properties for removing dust or suspended matter from the air to be purified, as well as adsorptive properties, d. H. Properties for the adsorptive removal of odors as well as harmful or toxic substances. Due to the use of support structures fixed adsorbents has the inventive Air purification device also a fluidic Optimization on.

at the air cleaning device according to the invention in particular, is it a mobile or portable system, which has its own air conveyor and in accordance with a preferred embodiment also has its own energy supply device, so that the system according to the invention is easy manageable and universally applicable. In addition, the inventive Air purification device compact external dimensions, which facilitates the handling equally and the Field of application enlarged. As below described, the invention is suitable Air purification device, in particular for the purification of air in rooms with small volumes, such as passenger compartments or like, but also for the purification of air in small interiors, such as Abstell- or pantries or the like.

Especially can the air cleaning device according to the invention when not in use but also in the operation of a motor vehicle in Interior of the vehicle set up or in particular reversible be attached and put into operation so that on this In an effective manner (eg overnight) odor or Pollutants are eliminated, such. B. cigarette smoke in smoking vehicles. The effective removal of odors and / or pollutants - and although both at the level of dusts, aerosols or the like as well as with respect to gaseous odors and / or pollutants - leads to a significant relief of the inmates and to an appreciation of the motor vehicle as a whole.

It it goes without saying that embodiments, embodiments, Advantages and the like, which hereinafter for purposes of avoidance of repetitions only to one aspect of the invention are, of course, in relation to the rest Invention aspects apply accordingly.

The present invention - according to a first aspect of the present invention - is thus an air cleaning device, in particular for cleaning and / or filtering of air in particular closed rooms, preferably for passenger compartments and / or cabs of motor vehicles, wherein the air cleaning device according to the invention is a filter device and an air conveying device for flowing through the filters having device with air. The air cleaning device according to the invention is characterized in that the filter device has at least one filter element with fixed on a carrier particulate adsorbents for the adsorption of odors and / or pollutants.

The Combined air cleaning device according to the invention the positive characteristics of an air filter with filter function to suspended solids, such as dusts or aerosols, for example, with adsorptive properties gaseous substances, so that a total of high efficiency with regard to the purification of indoor air results. The inventive air cleaning device represents a sort of self-sufficient system, which is independent which can be operated from external sources of energy Due to its compact design universal for a variety of use cases at the same time very much good handling can be used. In the inventive Air purification device is thus a total of one Air filtration device with adsorptive properties.

In In this context, the Applicant in completely surprising Way out that the use of a special Filter device with at least one filter element which on a carrier fixed particulate adsorbents to adsorb odors or pollutants, a significant Increased filtration or adsorption realized can be. Without limiting yourself to this theory The much increased efficiency, for example, can be be justified by the fact that on the carrier fixed adsorbents improved accessibility for the air to be treated, so that on this way pollutants or toxins, but also suspended solids effectively can be removed from the air.

moreover becomes a lane due to the use of special carriers avoided, resulting in a reduction of both Flow resistance leads, so that the caused by the filter elements pressure drop is low, which is the performance further improved or what that leads to that inventive system with relatively low power and energy-saving air handling equipment operated can be. Due to the use of special support structures with adsorbents fixed thereto, the amount of adsorbents can also be Overall, be reduced, reflecting the background of production efficiency or in terms of reducing production costs is. In addition, the handling is easier, for example because the special filter elements for example compared to loose Fillings can be exchanged more easily. Also results in a better possibility of combining different types Filter elements, so that the air cleaning device according to the invention with regard to the respective field of application can be customized. In addition, this is also the regenerability Adsorbents and thus the recycling of the filter elements significantly improved, as the increased accessibility Adsorbents also beneficial in the context of regeneration is.

in the Under the present invention, it may be provided that the particulate adsorbents of the filter element preferably by means of a discontinuous, in particular punctiform applied adhesive are fixed to the carrier. In this regard, the adhesive can be a hot melt adhesive (hotmelt), in particular a reactive or non-reactive hot melt adhesive, or a thermoplastic Be adhesive. Associated adhesives are those skilled in the art well-known in itself, so that in this regard no one further versions required.

to Achieving a high adsorption or filtration efficiency is advantageous if the particulate adsorbents of the filter element at least 50%, in particular at least 60%, preferably at least 70%, for the adsorptive odor and / or Pollutants are freely accessible. The particulate Adsorbents of the filter element should be at least 50%, in particular at least 60%, preferably at least 70%, not with adhesive be covered, in this way a high contact surface or a high degree of accessibility for the cleaned up To ensure air.

The adhesive should be in an amount of 1 to 200 g / m ² , in particular 5 to 150 g / m ² , preferably 10 to 120 g / m ² , preferably 20 to 100 g / m ² , particularly preferably 25 to 80 g / m ² , most preferably 30 to 75 g / m ² , be applied.

The adsorbent load can vary widely. In general, the particulate adsorbents of the filter element in an amount of 5 to 500 g / m ² , in particular 10 to 450 g / m ² , preferably 20 to 400 g / m ² , preferably 25 to 350 g / m ² , particularly preferably 50 to 325 g / m ² , very particularly preferably 50 to 300 g / m ² , be applied to the support. In other words, the loading of odor and / or Schadadsadsorbierenden particulate adsorbents should be designed so that the adsorption provided by the adsorption capacity sufficient to when using the air cleaning device according to the invention from the environment or from the indoor air originating Schad- and / or Permanently adsorptive bind or remove odors.

The particulate adsorbents of the filter element should be granular, preferably spherical be educated. In this connection, the mean particle diameter should be in the range of 0.01 to 2.0 mm, more preferably 0.05 to 1.0 mm, preferably 0.1 to 0.8 mm. The data relating to the mean diameter is the so-called D ₅₀ value, which can be determined, for example and in a non-restrictive manner, by laser diffraction or sieve analysis, which is well known to the person skilled in the art.

The particulate adsorbents of the filter element can be selected from the group of activated carbon; zeolites; inorganic oxides, especially silicas, silica gels and aluminas; Molecular sieves; mineral granules; clathrates; as well as their mixtures. As particulate adsorbents Activated carbon is particularly preferably used, which has a high Efficacy in terms of adsorption of toxic or pollutants, but also with regard to the adsorption of odors. Without to limit themselves to this theory, the namely the aforementioned particulate adsorbents namely Pores for uptake or storage, in particular adsorption, of odor or pollutants. In other words, the particulate Adsorbents porous structures for the absorption of odor or pollutants, so that these in an effective manner be removed from the air to be purified. Due to the relatively unspecific Adsorption properties of the invention used Adsorption materials is the inventive Air purification device for the adsorption of any pollutants, poisonous and odorous substances, so that the inventive Device against this background, so to speak universally applicable is.

In this context, it is particularly advantageous if the particulate adsorbents of the filter element in the form of discrete particles of activated carbon, in particular in grain form ("grain") or spherical shape ("ball carbon"), are formed or comprise. The particulate adsorbents of the filter element should have a specific surface area (BET) of at least 500 m ² / g, in particular at least 750 m ² / g, preferably at least 1000 m ² / g, particularly preferably at least 1200 m ² / g. In addition, the particulate adsorbents of the filter element, in particular the activated carbon, should have a specific surface area (BET) of 500 to 2,500 m ² / g, in particular 750 to 2,250 m ² / g, preferably 900 to 2,000 m ² / g, particularly preferably 1,000 to 1,750 m ² / g. As far as the adsorbents are concerned, the particulate adsorbents of the filter element should be an activated carbon having an adsorption _volume V _ads of at least 250 cm ³ / g, in particular at least 300 cm ³ / g, preferably at least 350 cm ³ / g, particularly preferably at least 400 cm ³ / g, be. In this connection, the particulate adsorbents of the filter element should be an activated carbon having an adsorption _volume V _ads of 250 to 2,000 cm ³ / g, in particular 300 to 1,500 cm ³ / g, preferably 350 to 1,400 cm ³ / g.

Particularly good results with regard to the adsorption properties are achieved if the particulate adsorbents of the filter element have an activated carbon having a total pore volume according to Gurvich of at least 0.50 cm ³ / g, in particular at least 0.55 cm ³ / g, preferably at least 0.60 cm ³ / g, more preferably at least 0.65 cm ³ / g, most preferably at least 0.70 cm ³ / g, are. The particulate adsorbents of the filter element can be an activated carbon having a total pore volume according to Gurvich of 0.50 to 2 cm ³ / g, in particular 0.55 to 1.8 cm ³ / g, preferably 0.60 to 1.5 cm ³ / g, particularly preferably 0.65 to 1.2 cm ³ / g, very particularly preferably 0.70 to 1 cm ³ / g.

Especially against the background of the further improvement of the adsorption properties and The regenerability of the adsorbents can be inventively provided be that the particulate adsorbents of the filter element an activated carbon which has an impregnation, in particular wherein the impregnation is selected is from the group of (i) metals, preferably copper, silver, Cadmium, platinum, palladium, rhodium, zinc, mercury, titanium, zirconium, Molybdenum and / or aluminum, in particular their ions and / or Salt; (ii) enzymes; (iii) basic compounds, in particular organic bases, such as organic amines; (iv) acidic compounds, especially hydrochloric and sulfuric compounds or free organic or inorganic acids; as well as their mixtures and / or Combinations. In this context, the impregnation, based on the activated carbon, in an amount of 0.01 to 30 wt .-%, preferably 0.1 to 20 wt .-%, particularly preferably 1 to 15 wt .-%, most preferably 1 to 10 wt .-%, be applied to the activated carbon. Also for The adsorbents listed above may be one such Catalyst impregnation come into consideration.

to Achieving good flow characteristics should be the Carrier of the filter element gas permeable, in particular permeable to air, and / or permeable to water and / or be formed permeable to water vapor.

As far as the carrier of the filter element as such, it may be formed, for example, flat or two-dimensional. The carrier of the filter element in this context may be a textile carrier or a textile fabric. It is within the scope of the present invention, when the carrier of the filter element is a particular textile fabric in the form of egg woven, knitted, knitted, laid, nonwovens or nonwovens. The support of the filter element according to this embodiment should have a basis weight of 25 to 500 g / m ² , in particular 30 to 250 g / m ² , preferably 35 to 200 g / m ² .

The Filter element may also have a plurality of with particulate Have Adsorbentien acted carriers. In this regard, the carriers may be layered and / or layered be arranged in the filter element, so that on this As a result, a multi-layer structure per filter element results. there the different layers can lie loosely on each other or fixed together in a manner known to the person skilled in the art be. As carriers, so-called particle or aerosol filter materials are used, in particular as they are described below.

in the It is equally within the scope of the present invention possible that the carrier for the particulate adsorbents of the filter element a gas-permeable, in particular air-permeable, in particular mat-shaped is three-dimensional carrier. In this case, the carrier can the filter element is a foam material, in particular an open-celled or open-pored foam, in particular foam.

In In this case, the particulate adsorbents should be attached to the Walls of the cells or pores of the foam material, in particular Foam, to be fixed. The use of special foams, in particular as they are still clearly defined below leads to a significantly increased performance of the invention Air purification device. In particular, by the use of such Systems effectively prevents a lane, so that optimal Flow characteristics with respect to the filtered Air result. In addition, such Carrier systems so acted upon by the adsorbents be that optimal accessibility of the adsorbents with respect to the air to be purified.

According to this inventive embodiment should the carrier of the filter element in particular open-pored and / or open-cell foam, in particular foam, based on at least one organic polymer, in particular based on Polyurethanes, polyolefins, polystyrenes, polyvinyl chlorides, polyisocyanurates and formaldehyde resins, particularly preferably a polyurethane foam, be.

Of the Carrier of the filter element should be a particular open-pored and / or open-cell polyurethane-based foam (PU foam) or Polyolefin (PO) foam, in particular a preferably large-pore reticulated polyurethane foam, be. According to the invention it can be provided that the Carrier an open-pore or an open-celled foam, in particular foam, with a mean pore diameter of 1 to 5 mm, preferably 1.5 to 3 mm.

According to the invention it is also advantageous if the support of the filter element, in particular the foam or foam, a porosity (porosity) from 5 to 50 ppi, in particular 10 to 30 ppi, and / or when the carrier of the filter element, in particular the foam or foam, is flat. The carrier, in particular the foam or foam, should have a thickness of 1 to 40 mm, in particular 5 to 30 mm, preferably 10 to 25 mm.

Of the Carrier of the filter element should be self-supporting be. In addition, the carrier of the filter element should be thermal be consistently formed, in particular until at least 80 ° C, preferably to at least 100 ° C, especially preferably up to at least 120 ° C.

Farther It may be provided according to the invention that the Carrier of the filter element, in particular the foam or Foam, stiffened and / or cured, preferably in particular by thermal and / or chemical curing. In this context, it can be provided according to the invention be that the carrier of the filter element, in particular the foam or foam, with a chemical curing agent soaked and then cured. there For example, the curing agent may be an adhesive or otherwise Adhesive, which equally for fixing the particulate adsorbents serves.

The carrier of the filter element, in particular the foam material should, the particulate adsorbents in amounts of 30 to 90 wt .-%, in particular 40 to 85 wt .-%, preferably 50 to 80 wt .-%, particularly preferably 55 to 80 wt. %, based on the carrier. As a result, particularly good adsorption properties are achieved. The support, in particular the foam material, should moreover have a total basis weight of 1,500 to 8,000 g / m ² , in particular 2,000 to 6,000 g / m ² , preferably 2,500 to 5,000 g / m ² . It is particularly advantageous if the ratio of the average pore diameter of the open-cell or open-cell foam, in particular foam, to medium particle diameter of the particulate adsorbents used as the carrier is at least 1.2, in particular at least 1.5, preferably at least 1.7, particularly preferably at least 2, and preferably in the range of 1.2 to 7, in particular 1.5 to 6, preferably 1.7 to 5, particularly preferably 2 to 4, is located.

According to one another embodiment of the present invention it can be provided that the filter elements in addition Have activated carbon fibers and that the air purification device after the invention additional filter elements with activated carbon fibers having. Through the targeted use of activated carbon fibers can the adsorption behavior of the invention Air purification device can be improved overall, especially in combination with the particulate adsorbents. Because activated carbon fibers have an optimized adsorption kinetics, where odor or Poisonous and pollutants also over longer periods of time be effectively adsorbed while particulate Adsorbents generally have a very good "spontaneity" in terms of adsorption, so that in this way through the targeted combination of the respective adsorptive materials the adsorption behavior is improved overall.

What As far as the activated carbon fibers are concerned, they can be produced be more suitable by carbonation and subsequent activation organic starting fibers, in particular cellulose fibers, fibers based on cellulose derivatives, phenolic resin fibers, polyvinyl alcohol fibers, Pitch fibers, acrylic resin fibers, polyacrylonitrile fibers, aromatic polyamide fibers, Formaldehyde resin fibers, divinylbenzene crosslinked polystyrene fibers, Lignin fibers, cotton fibers and / or hemp fibers, preferably fibers based on cellulose and cellulose derivatives.

The activated carbon fibers may be present as textile activated carbon fiber structures, in particular as woven, knitted, knitted, laid, knitted, nonwoven, felt or other nonwoven fabric, preferably as nonwoven material, in particular wherein the textile activated carbon fiber structure has a basis weight of 10 to 200 g / m ² , in particular from 10 to 150 g / m ² , preferably from 10 to 120 g / m ² , particularly preferably from 20 to 100 g / m ² , very particularly preferably from 25 to 80 g / m ² . The activated carbon fibers may have mean fiber diameters of 1 to 25 μm, in particular 2.5 to 20 μm, preferably 5 to 15 μm. The activated carbon fibers may furthermore have a length-related mass (titre) of 1 to 10 dtex, in particular 1 to 5 dtex.

What the combination of the particulate adsorbents with the activated carbon fibers in the context of the air cleaning device according to the invention As far as concerns, it is advantageous if the average particle diameter of the particulate adsorbents at least threefold, in particular at least four times, preferably at least fivefold, more preferably at least sixfold, is greater than the mean fiber diameter of Activated carbon fibers.

According to the invention It should also be provided in this context that the particulate adsorbents and the activated carbon fibers on separate supports are arranged. In this context, the carrier can with the particulate adsorbents and the carrier Form a bond with the activated carbon fibers. equally But it is also possible that the particulate Adsorbents and the activated carbon fibers on the same carrier attached, in particular hereby glued.

Provided the use of activated carbon fibers is provided, it is preferred according to the invention that the activated carbon fibers with respect to the flow direction the air to be purified behind the particulate adsorbents are arranged, as in this way the adsorption behavior as a whole is optimized.

in the Under the present invention, it may be provided that the Air cleaning device at least two filter elements, preferably one Variety of filter elements, in particular wherein the filter elements equal to or different from each other, preferably different from each other, are formed. In this regard, the respective Filter elements as defined previously. The inventive Air purification device may in particular at least three, preferably have at least four or more filter elements, wherein the filter elements in terms of the flow of air in a sense arranged in series in the air purification device according to the invention could be.

The respective filter elements can according to this Embodiment of different average particle diameter the particular particulate adsorbents or different average pore diameters of the respective Carrier or mutually different porosities of the respective Have carrier.

So It may be provided according to the invention that the Filter elements are arranged such that in the operating state the air purification device or the filter element (s) with the larger mean particle diameters of respective particulate adsorbents or with the larger average pore diameter of the respective carrier or with the greater porosity of the respective carrier in the direction of the incoming air in front of the filter element (s) with the smaller mean particle diameters of the respective ones particulate adsorbents or with the smaller average Pore diameter of the respective carrier or with the smaller porosity the respective carrier are arranged.

In other words, it is advantageous if the filter elements with the larger average through are arranged with the larger average pore diameters of the respective carrier or with the larger porosity of the respective carrier with respect to the flow direction of the air in the operating state of the device according to the invention upstream of the other filter elements of the particulate adsorbents. The advantage, when the filter element with the coarse-grained adsorbents - viewed in the flow direction of the incoming air - is positioned upstream of the filter element with the finer adsorbents upstream of the filter element with the finer-grained activated carbon, can be seen in particular that the filter element with the coarse-grained activated carbon a has greater loading or adsorption capacity and thus already absorbs a large part of the substances to be adsorbed (about 90 to 95%); On the other hand, the filter element with the finer-grained active carbon has a lower loading or adsorption capacity, but a better adsorption kinetics, so that it can easily adsorb the first filter element, if necessary, through the material. This can be further improved by the preferably downstream use of activated carbon fibers - ie downstream of the particulate adsorbents. The amount of eruptive substances is relatively low, since the substances to be adsorbed for the most part are already adsorbed by the first filter element, so that the downstream filter element can maintain its function as a filter element for adsorption of the first filter element any disruptive substances long time since his Capacity for the adsorption of relatively small amounts of disruptive substances is completely sufficient.

As previously stated, it may be within the scope of the present invention be provided so that the or in the operating condition downstream filter element (s) activated carbon fibers, in particular as defined above, or thereby, as a result the adsorption behavior - as previously described - overall can be further improved.

According to the invention It is possible that every single filter element in addition with a particle and / or aerosol filter layer, preferably a particle and aerosol filter layer. In this regard, is also noteworthy that the wearer as such, whether in the form of a two-dimensional or three-dimensional support, already defined as such, the function of a particle or aerosol filter can exert.

in the It can also be provided within the scope of the present invention that the air purification device, in particular the filter device, at least one additional filter element with at least one Particle and / or aerosol filter layer has.

On This way can dusts in an efficient way or suspended matter or aerosols from the air to be purified - at simultaneous release of adsorbents - filtered become. Thus, also a further improved protective function over, for example contained in the combustion gases of diesel engines or by Tire and brake abrasion formed fine dusts are ensured. Also, the pollen filter function can by this measure be further improved.

The particle and / or aerosol filter layer used can be a textile fabric, preferably an air-permeable textile material. In this regard, the fabric may be a woven, knitted, knitted, laid or non-woven fabric, in particular a nonwoven. The particle and / or aerosol filter layer may have a weight per unit area of 1 to 100 g / m ² , in particular 5 to 50 g / m ² . The particle and / or aerosol filter layer may furthermore have a basis weight of at most 100 g / m ² , in particular at most 50 g / m ² .

Especially good results with regard to the filtration of dusts or suspended matter can be achieved if the particle and / or aerosol filter layer a textile fabric consisting of textile fibers is, the average diameter of the textile fibers at most 50 μm, in particular at most 30 μm, preferably at most 20 μm, preferably at most 10 μm, more preferably at most 5 μm, most preferably at most 2 microns, amount should and / or where the diameter of the textile fibers in the range from 0.05 to 50 μm, in particular from 0.1 to 50 μm, preferably 0.2 to 30 microns, more preferably 0.2 to 20 μm, very particularly preferably 0.5 to 10 μm, should lie.

Farther The particle and aerosol filter layer can be made from textile fibers existing textile fabric with through the textile fibers limited pores or meshes. In this regard can the textile fabric has a mean pore size or average mesh size of at most 200 μm, in particular at most 100 μm, preferably at most 75 μm, more preferably at most 50 microns, especially preferably not more than 40 microns.

In this relationship can equally be that the particle and / or aerosol filter a from Textile fibers existing textile fabric with by The textile fibers are limited pores or meshes, the ratio being the average pore size or mesh size for average diameter of the textile fibers in the range of 0.1 to 2,000, in particular 1 to 500, preferably 5 to 350, particularly preferred 10 to 300, most preferably 25 to 250, should be.

The Particle and / or aerosol filter can be made from textile fibers be existing textile fabric, being used as textile fibers natural and / or synthetic fibers, preferably synthetic ones Fibers (chemical fibers), can be used, in particular from the group of polyester (PES); Polyolefins, such as polyethylene (PE) and polypropylene (PP), polyvinyl chloride (CLF); polyvinylidene (CLF); Acetate (CA); Triacetate (CTA); Polyacrylic (PAN), polyamide (PA); Polyvinyl alcohol (PVAL); polyurethanes; polyvinyl; (Meth) acrylates; as well as their mixtures.

The particle and / or aerosol layer used in the context of the present invention may have an average efficiency E _in DIN EN 779 (July 1993) of at least 40%, in particular at least 50%, preferably at least 70%, particularly preferably at least 90%, very particularly preferably at least 95%. In addition, the particle and / or aerosol filter layer can have an average degree of separation A _m DIN EN 779 (July 1993) of at least 50%, in particular at least 70%, preferably at least 90%, particularly preferably at least 95%, very particularly preferably at least 99%. The particle and / or aerosol filter layer may also have an integral initial transmittance D _i DIN EN 1822 (April 1998 ; DEHS aerosol, MPPS = 0.1 to 0.3 μm) of not more than 50%, in particular not more than 40%, preferably not more than 30%, particularly preferably not more than 20%, very particularly preferably not more than 10%.

moreover should the particle and / or aerosol filter at a flow velocity of 0.1 m / s a mean rate of deposition against particles and / or aerosols with diameters in the range of 0.1 to 0.3 microns of at least 80%, in particular at least 90%, preferably at least 95%, exhibit. Finally, the particle and / or aerosol filter layer should be at a flow velocity of 0.1 m / s a medium Separation rate to particles and / or aerosols with diameters ≥ 2 μm, in particular ≥ 1.5 μm, of at least 95%, in particular at least 98%, preferably at least 99%.

What furthermore, the particle and / or aerosol filter layer so this should have a thickness of 0.001 to 10 mm, in particular 0.01 to 5 mm, preferably 0.01 to 1 mm. The particle and / or Aerosol filter can be attached to a support, in particular as defined above, be fixed.

Especially It is advantageous if in the context of the present invention a as a HEPA filter (High Efficiency Penetration or Particulate Air) or ULPA filter (Ultra Low Penetration or Particulate Air) trained Particle and / or aerosol filter is used.

What the arrangement of the additional filter element with the As far as particle and / or aerosol filter layer is concerned, it is special advantageous if this in the flow direction of the Air is arranged in front of the or the remaining filter element (s). In other words, the filter element with the particle and / or Aerosol filter layer in the operating state of the air purification device disposed upstream of the one or more other filter element (s) be. In this way, the adsorbents are not through the previously filtered-out dusts or suspended solids influenced in their adsorption properties.

What the shaping or three-dimensional design of the filter elements including the additional filter element As far as concerns, this can vary widely. So can it should be provided in the context of the present invention that the or the filter element (s) and / or the additional filter element with the particle and / or aerosol layer - independent from each other - are plate-shaped. Equally, however, it is also possible that the or the filter element (s) or the additional filter element are formed hollow cylindrical. In such an embodiment with a hollow cylindrical structure of the respective filter elements should the respective filter elements of different diameter have, so that they into one another, so to speak nested can be arranged, in this regard the aforementioned sequence of filter elements with respect to the flow direction the air should be maintained. For example, should first a filter element with a particle and / or aerosol filter layer arranged as a kind of inner hollow cylinder, if the system consists of several hollow cylindrical filter elements of inside with the air to be purified by means of the air conveyor is flown.

in the Within the scope of the present invention, it is particularly advantageous if the or the filter element (s) or the additional Filter element is designed washable or regenerable.

To ensure high throughflow rates with air, the filter element (s) and / or the additional filter element should have a gas permeability, in particular air permeability, of at least 5 lm ^-2 .s ^-1 , in particular at least 10 lm ^-2 sec ^-1 , preferably at least 30 l · m ^-2 · s ^-1 , particularly preferably at least 50 l · m ^-2 · s ^-1 , very particularly preferably at least 200 l · m ^-2 · s ^-1 or more, with a flow resistance of 127 Pa.

What the air conveyor of the air cleaning device according to the invention anbe long, so this can be a particular electrically operated fan or fan or a particular electrically operated fan.

The Air conveyor should be in the operating state of the air purification device upstream of the filter elements and / or upstream be arranged to the additional filter element. alternative It is also within the scope of the present invention, when the air conveyor downstream to the respective filter elements or between the respective filter elements is arranged. Furthermore, it is advantageous if the air conveyor especially with regard to their air flow adjustable is trained.

As previously stated, it is in the inventive Air purification device preferably a mobile deployable or portable system. In this context, it is beneficial if the air cleaning device according to the invention a separate power supply device, in particular for operation having the air conveyor. In this context the power supply device can be an accumulator, a battery, a fuel cell or even a solar cell or the like be. Accordingly, the air cleaning device according to the invention energetically self-sufficient, so that operation without external Energy supply is possible, which, for example, when operating in a motor vehicle is advantageous because in this way the motor vehicle battery is not charged. Alternatively or in addition to the above-mentioned measure with independent energy supply but it can also be provided that the inventive Air purification device connection devices for connection, for example having the electrical system of a motor vehicle. equally is also a network operation into consideration, in this regard preferably corresponding power supplies are used. In general it acts it is in the air cleaning device according to the invention a low-powered system.

The inventive air cleaning device has In general, a housing, which preferably made of Plastic and / or metal is formed, wherein the metal or the plastic still with surface coatings, for example can be provided with a paint job. The respective should Components of the air cleaning device according to the invention, in particular the air conveyor, the filter device with the filter element or with the filter elements and optionally with the additional filter element and the power supply device of be received in the housing or in the housing be integrated.

there the housing should have at least one air inlet opening and / or have at least one air outlet opening, which preferably at different locations of the housing are arranged and in terms of their respective function, namely Air intake for the air to be purified on the one hand and air outlet for the purified air on the other can be optimized. For example, the air outlet opening be designed so that they are larger is as the air inlet or that this Having diffuser means for broadening the air flow, so that when using the inventive Air cleaning device no unpleasant draft arises.

The Housing of the air cleaning device according to the invention For example, recording devices for the Have filter device or for the filter elements, in particular guaranteed in this respect should be that the filter elements or the filter device or the filter elements easily removed from the housing are to easily change the corresponding filter device or to allow filter elements. In this regard, The housing can also with flaps or the like, which provides easy access to allow the filter elements and the filter device. In addition, the housing can still louvers to optimize the Air passage through the filter elements or through the filter device exhibit.

The Shape of the air cleaning device according to the invention can vary within wide ranges, in particular an optimization the shaping against the background of the respective use into consideration can be pulled. So it can in the context of the present invention be provided that the inventive Air purification device has a shape which integration or attachment of the air cleaning device according to the invention in or with interior furnishings or equipment (s) of the space to be cleaned, such as seats, floor components, glove compartments, Center consoles, shelves or the like, allows. For example can the air cleaning device according to the invention adapted to contours or shapes of a motor vehicle interior be so that a secure, in particular form-fitting Fixation of the air cleaning device according to the invention possible is.

In this context, it may also be provided that the air cleaning device according to the invention additionally attachment or receiving devices for preferably reversible attachment of the air cleaning device according to the invention on equipment of the space to be cleaned, for example, seats, floor components, glove boxes, Mittelkon soles, shelves or the like. As a result, a reliable function of the air cleaning device according to the invention is also possible during operation of the motor vehicle.

The air cleaning device according to the invention is also characterized by a high air flow rate and thus a high cleaning or purification efficiency. In this context, the air cleaning device according to the invention in the operating state should have a preferably controllable air flow rate of 5 to 200 m ³ / h, in particular 10 to 175 m ³ / h, preferably 15 to 150 m ³ / h, preferably 20 to 125 m ³ / h ,

The air cleaning device according to the invention is particularly suitable for the purification of air in rooms with a volume of up to 50 m ³ , in particular up to 30 m ³ , preferably up to 20 m ³ , preferably up to 10 m ³ .

In In this context, the typical field of application of the invention Air purification device formed by small spaces or the like, in particular motor vehicle interiors, Passenger cabins or the like come into consideration. But also for small rooms in apartments, houses or the like, like storage rooms or small rooms, the invention is suitable Air purification device in particular.

The According to the invention air cleaning device have a number of other features, which the field of application the air cleaning device according to the invention enlarge further or improve the handling further: So it can be provided that the inventive Air purification device additional cooling elements or heating elements for temperature control. In addition, can the air cleaning device according to the invention Control elements such as odor and / or gas sensors, or have a timer to a controlled or controlled To allow operation of the air cleaning device. moreover It may be provided that the inventive Air purification device is remotely controllable. Also a coupling with the electrical control of motor vehicles, for example with a CAN bus system, may be considered, for. B. to the invention Air cleaning device on the on-board system of the motor vehicle to control. Also a connection - for example by means of suitable air duct elements, such as air hoses - on a motor vehicle fan comes into consideration, so that on This way, for example, the motor vehicle fan originating air filtered or the motor vehicle fan originating air of the internal air to be purified in the inventive Air cleaning device is mixed, so that, so to speak from the outside originating air at least partially through the according to the invention cleaned with air cleaning device becomes. Thus, a mixed operation of the invention is also Air purifier possible, in which part of the Indoor air and at least part of air supplied from outside is cleaned. The air cleaning device according to the invention In addition, facilities for enriching the air with fragrances exhibit.

Further Advantages, characteristics, aspects and features of the present invention result from the following description of one in the single Figure illustrated embodiment. It shows:

FIG. a schematic sectional view of the side view of the invention Air purification device, according to which the inventive system two filter elements each fixed to a carrier particulate adsorbents and an additional Having filter element with an aerosol and particle filter.

The single FIGURE shows a schematic sectional view of the side view of the air cleaning device according to the invention 1 according to a specific embodiment of the present invention. The air cleaning device according to the invention 1 , which is particularly suitable for the purification and / or filtration of air in particular closed rooms, preferably for passenger compartments and / or cabins of motor vehicles, has a filter device 2 and an air conveyor 3 for flow through the filter device 2 with air on. The air cleaning device according to the invention is characterized in that the filter device 2 two filter elements 4a and 4b each having attached to a carrier particulate adsorbents for the adsorption of odors and / or pollutants. The components of the air cleaning device according to the invention are in a housing 9 housed, which has an air inlet opening 6 for the entry of clean air and an air outlet 7 to the outlet of purified air. The formed in the form of a fan air conveyor 3 is, based on the operating state of the air cleaning device according to the invention, upstream of the filter device 2 or the filter elements 4a . 4b and the additional filter element 5 arranged. The air conveyor 3 is through a power supply device 8th energized. The air cleaning device according to the invention 1 According to the embodiment shown in the single figure also has an additional filter element 5 with a particle and / or aerosol filter. The additional filter element 5 is upstream of the filter elements 4a and 4b arranged. What the filter elements 4a and 4b As far as the filter is concerned lement 4a particulate adsorbents having a larger average particle diameter than the filter element 4b on. The targeted combination and arrangement of the filter elements is a total of an air cleaning device 1 which has excellent filtering and adsorption properties both against air particulates and aerosols and gaseous odors or pollutants.

For further details in this regard to the air cleaning device according to the invention 1 can be made to the above statements.

Another Object of the present invention - according to a second aspect of the present invention - is the use the air cleaning device according to the invention, as previously defined, for the purification or filtration of air in especially enclosed spaces.

As previously stated, it may be in the particular closed Rooms around passenger compartments or cabins of motor vehicles, but also to small interiors, for example of apartments or houses, such as storage rooms or the like act.

in the Frame of the inventive use of the air cleaning device According to the invention, the air to be treated by dust, in particular Road dust, (flower) pollen, bacteria, viruses, (Fungal) spores, allergens, (cigarette) smoke, odorants or the like, and gaseous odors and pollutants cleaned in an efficient way.

After all is the subject of the present invention - according to a Third aspect of the present invention - the invention Method for purifying or filtering air in particular enclosed spaces, such as passenger compartments or cabins of Motor vehicles. The inventive method is characterized in that the air purification device according to the invention, as defined above, in the particular closed Space is operated, in particular for a duration for up to 12 hours, especially up to 10 hours, preferably up to 8 hours.

Further Embodiments, modifications and variations of the present invention are readily apparent to those skilled in the art upon reading the description recognizable and realizable, without him doing the frame of the present invention leaves.

The The present invention will become apparent from the following embodiments However, which illustrates the present invention in no way should restrict.

WORKING EXAMPLES

It different air purification devices are manufactured, in each case in a housing, a fan with a independent power supply in the form of a battery is arranged. The fan is in the housing at one Inlet opening arranged for air. In relation on the operating state of the respective air cleaning device be downstream of the fan filter elements, such as hereinafter referred to, arranged by which the aufreininigende Air in the operating state flows. The purified air is through one of the air inlet opening in the housing opposite air outlet in the Environment submitted.

All in all Three air purification devices are provided: Firstly is a non-inventive air cleaning device (A) made, which is an additional filter element based on a particle and / or aerosol filter layer of a textile fabrics having an average pore size of about 100 microns, with this additional Filter element an adsorption filter element based on activated carbon preceded in bulk, d. H. in the operating state is arranged upstream.

To the others are two air cleaning devices according to the invention (B) and (C), each one compared to the Non-inventive air purification device (A) identical and also identically arranged (upstream to the filter elements with adsorbents) additional filter element based on a particle and / or aerosol filter layer.

The first air cleaning devices according to the invention (B) has a filter element with particulate adsorbents on, as a carrier, a three-dimensional carrier based on an open-pore polyurethane foam with a middle Pore diameter of 4 mm is used, which with particulate Adsorbents in the form of activated carbon with an average particle diameter of 0.8 mm is occupied.

The second air cleaning device (C) according to the invention comprises, in comparison to the first air cleaning device (B) according to the invention, an additional filter element with adsorbents arranged downstream of the first filter element with the coarse polyurethane foam in the operating state of the air cleaning device, this second filter element likewise being a three-dimensional one Carrier based on a Po However, in this respect, an open-cell foam having an average pore diameter of 1 mm is used. In addition, particulate adsorbents based on activated carbon having a mean particle diameter of 0.2 mm are used with respect to the second filter element with the fine-pored foam of the air cleaning device (C) according to the invention.

The air purifying devices (A), (B) and (C) thus prepared are each subjected to an adsorption filter test, and the respective air purifying devices are each brought into a closed space having an edge length of 2 m each. The air in the room is enriched with VOCs (Volatile Organic Compounds) with a VOC indoor air concentration of about 10,000 ng / m ³ . The air purification devices are each operated for 10 hours.

In the non-inventive air cleaning device (A) results after the test, a VOC ambient air concentration of 1,500 ng / m ³ , while for the first inventive air purification device (B) with the coarse-pored foam and the activated carbon particles with a large diameter, a value of less than 300 ng / m ³ results. For the inventive air cleaning device (C) with the filter elements based on the coarse-pored foam and the adsorbents with a large particle diameter on the one hand and the filter element with the fine-pored foam and the particulate activated carbon adsorbents with a small particle diameter results in a value of less than 100 ng / m ³ .

The The available test results prove the excellent results Properties of the air cleaning devices according to the invention (B), (C) regarding the filtering or adsorption of pollutants from the air, with a significant increase being achieved can, if in the manner previously mentioned special Filter elements based on foams with activated carbon used and be combined.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited non-patent literature

• - DIN EN 779 (July 1993) [0058]
• - DIN EN 779 (July 1993) [0058]
• - DIN EN 1822 (April 1998 )

Claims (42)

Air purification device ( 1 ), in particular for the purification and / or filtering of air in especially enclosed spaces, preferably for passenger compartments and / or booths of motor vehicles, wherein the air purification device ( 1 ) a filter device ( 2 ) and an air conveyor ( 3 ) for the flow through the filter device ( 2 ) with air, characterized in that the filter device ( 2 ) at least one filter element ( 4a . 4b ) having attached to a carrier particulate adsorbents for the adsorption of odors and / or pollutants. Air purification device according to claim 1, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) are preferably fixed to the carrier by means of a discontinuous, in particular punctiform, applied adhesive, in particular wherein the adhesive is a hot melt adhesive (hotmelt), in particular a reactive or nonreactive hotmelt adhesive, or a thermoplastic adhesive. Air purification device according to claim 1 or 2, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) are at least 50%, in particular at least 60%, preferably at least 70%, freely accessible to the odors and / or pollutants to be adsorbed and / or that the particulate adsorbents of the filter element ( 4a . 4b ) are at least 50%, in particular at least 60%, preferably at least 70%, not covered with adhesive. Air purification device according to claim 2 or 3, characterized in that the adhesive in an amount of 1 to 200 g / m ² , in particular 5 to 150 g / m ² , preferably 10 to 120 g / m ² , preferably 20 to 100 g / m ² , more preferably 25 to 80 g / m ² , most preferably 30 to 75 g / m ² , is applied. Air purification device according to one of the preceding claims, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) in an amount of 5 to 500 g / m ² , in particular 10 to 450 g / m ² , preferably 20 to 400 g / m ² , preferably 25 to 350 g / m ² , particularly preferably 50 to 325 g / m ² , most preferably 50 to 300 g / m ² , are applied to the carrier. Air purification device according to one of the preceding claims, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) are grain-shaped, preferably spherical, are formed, in particular wherein the average particle diameter of the particulate adsorbents in the range of 0.01 to 2.0 mm, in particular 0.05 to 1.0 mm, preferably 0.1 to 0.8 mm , Air purification device according to one of the preceding claims, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) are selected from the group of activated carbon; zeolites; inorganic oxides, especially silicas, silica gels and aluminas; Molecular sieves; mineral granules; clathrates; and mixtures thereof, and more preferably activated carbon. Air purification device according to one of the preceding claims, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) in the form of discrete particles of activated charcoal, in particular in the form of granules ("granular carbon") or spherical form ("spherical carbon"), or comprise these. Air purification device according to one of the preceding claims, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ), in particular the activated carbon, have a specific surface area (BET) of at least 500 m ² / g, in particular at least 750 m ² / g, preferably at least 1,000 m ² / g, particularly preferably at least 1,200 m ² / g, and / or the particulate adsorbents of the filter element ( 4a . 4b ), in particular the activated carbon, have a specific surface area (BET) of 500 to 2,500 m ² / g, in particular 750 to 2,250 m ² / g, preferably 900 to 2,000 m ² / g, particularly preferably 1,000 to 1,750 m ² / g , Air purification device according to one of the preceding claims, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) an activated carbon which has an impregnation, in particular wherein the impregnation is selected from the group of (i) metals, preferably copper, silver, cadmium, platinum, palladium, rhodium, zinc, mercury, titanium, zirconium, molybdenum and / or aluminum, in particular their ions and / or salts; (ii) enzymes; (iii) basic compounds, especially organic bases, such as organic amines; (iv) acidic compounds, in particular hydrochloric and sulfuric compounds or free organic or inorganic acids; and their mixtures and / or combination, and / or in particular wherein the impregnation, based on the activated carbon, in an amount of 0.01 to 30 wt .-%, preferably 0.1 to 20 wt .-%, particularly preferably 1 to 15 wt .-%, most preferably 1 to 10 wt .-%, is applied to the activated carbon. Air purification device according to one of the preceding claims, characterized that the carrier of the filter element ( 4a . 4b ) gas-permeable, in particular air-permeable, and / or water-permeable and / or water vapor permeable. Air purification device according to one of the preceding claims, characterized in that the support of the filter element ( 4a . 4b ) is formed flat and / or two-dimensional and / or that the support of the filter element ( 4a . 4b ) is a textile carrier and / or that the carrier of the filter element ( 4a . 4b ) is a textile fabric. Air purification device according to claim 12, characterized in that the support of the filter element ( 4a . 4b ) is a textile fabric in particular in the form of a woven, knitted, knitted, laid, nonwoven or nonwoven textile fabric and / or that the support of the filter element ( 4a . 4b ) has a weight per unit area of 25 to 500 g / m ² , in particular 30 to 250 g / m ² , preferably 35 to 200 g / m ² . Air cleaning device according to one of claims 12 or 13, characterized in that the support of the filter element ( 4a . 4b ) has a plurality of carriers acted upon by particulate adsorbents, in particular wherein the carriers are layered and / or layered in the filter element ( 4a . 4b ) are arranged. Air purification device according to one of claims 1 to 11, characterized in that the support of the filter element ( 4a . 4b ) is a particular mat-shaped three-dimensional support, in particular wherein the support of the filter element ( 4a . 4b ) is a foam material, in particular an open-cell or open-cell foam, in particular foam. Air purification device according to claim 15, characterized characterized in that the particulate adsorbents on the walls of the cells or pores of the foam material, in particular foam, are fixed. Air purification device according to claim 15 or 16, characterized in that the support of the filter element ( 4a . 4b ) is a particular open-pore and / or open-cell foam, in particular foam, based on at least one organic polymer, in particular based on polyurethanes, polyolefins, polystyrenes, polyvinyl chlorides, polyisocyanurates and formaldehyde resins, particularly preferably a polyurethane foam. Air purification device according to one of the claims 15 to 17, characterized in that the carrier, in particular the foam material, the particulate Adsorbents in amounts of 30 to 90 wt .-%, in particular 40 to 85 wt .-%, preferably 50 to 80 wt .-%, particularly preferably 55 to 80 wt .-%, based on the carrier contains. Air purification device according to one of the preceding claims, characterized in that the filter elements ( 4a . 4b ) additionally comprise activated carbon fibers and / or that the air purification device comprises additional filter elements with activated carbon fibers. Air purification device according to claim 19, characterized characterized in that the average particle diameter of the particulate adsorbents at least threefold, in particular at least four times, preferably at least fivefold, more preferably at least sixfold, is greater than the mean fiber diameter of Activated carbon fibers. Air purification device according to claim 19 or 20, characterized in that the particulate Adsorbents and the activated carbon fibers on separate carriers are arranged, in particular wherein the carrier with the particulate adsorbents and the carrier with the Activated carbon fibers can form a composite. Air purification device according to one of the preceding claims, characterized in that the air purification device comprises at least two filter elements ( 4a . 4b ), in particular wherein the filter elements are the same or different, preferably different from each other, are formed. Air purification device according to claim 22, characterized in that the respective filter elements ( 4a . 4b ) have different mean pore diameters and / or mutually different porosities and / or mutually different average particle diameters of the respective particulate adsorbents. Air cleaning device according to one of the preceding claims, characterized in that the air cleaning device ( 1 ), in particular the filter device ( 2 ), at least one additional filter element ( 5 ) having at least one particle and / or aerosol filter layer and / or that the filter element ( 4a . 4b ) additionally has at least one particle and / or aerosol filter layer. Air purification device according to claim 24, characterized in that a textile fabric, preferably an air-permeable textile material, is used as the particle and / or aerosol filter layer, in particular wherein the fabric is a woven, knitted fabric, knitted fabric, scrim or textile composite, in particular a nonwoven, and particularly preferred is a nonwoven and / or that the particle and / or Aerosolfilterschicht has a basis weight of 1 to 100 g / m ² , in particular 5 to 50 g / m ² , and / or that the particle and / or Aerosolfilterschicht a basis weight of at most 100 g / m ² , in particular at most 50 g / m ² . Air purification device according to claim 24 or 25, characterized in that the particle and / or Aerosol filter layer has a thickness of 0.001 to 10 mm, in particular 0.01 to 5 mm, preferably 0.01 to 1 mm. Air purification device according to one of the claims 24 to 26, characterized in that the particle and / or Aerosol filter layer as a HEPA filter (High Efficiency Penetration or Particulate Air) or ULPA filters (Ultra Low Penetration or Particulate Air) is formed. Air purification device according to one of claims 24 to 27, characterized in that the filter element ( 5 ) with the particle and / or aerosol filter layer in the direction of the incoming air in front of the filter element (s) ( 4a . 4b ) is arranged and / or that the filter element ( 5 ) with the particle and / or aerosol filter layer in the operating state of the air purification device ( 1 ) upstream of the filter element (s) ( 4a . 4b ) is arranged. Air purification device according to one of the preceding claims, characterized in that the filter element ( 4a . 4b ) and / or the filter element ( 5 ), independently of each other, are plate-shaped or that the filter element ( 4a . 4b ) and / or the filter element ( 5 ), independently of one another, are hollow-cylindrical. Air purification device according to one of the preceding claims, characterized in that the filter element ( 4a . 4b ) and / or the filter element ( 5 ) a gas permeability, in particular air permeability, of at least 5 lm ^-2 · s ^-1 , in particular at least 10 l · m ^-2 · s ^-1 , preferably at least 30 l · m ² · s ^-1 , particularly preferably at least 50 l · M ^-2 · s ^-1 , very particularly preferably at least 200 l · m ^-2 · s ^-1 or more, with a flow resistance of 127 Pa has. Air cleaning device according to one of the preceding claims, characterized in that the air conveying device ( 3 ) is a particular electrically operated fan and / or fan and / or a particular electrically operated fan. Air cleaning device according to one of the preceding claims, characterized in that the air cleaning device ( 1 ) a power supply device ( 8th ) in particular for the operation of the air conveyor device ( 3 ), in particular wherein the energy supply device ( 8th ) is selected from the group of accumulators, batteries, fuel cell solar cells and the like. Air cleaning device according to one of the preceding claims, characterized in that the air cleaning device ( 1 ) a housing ( 2 ), preferably of plastic and / or metal, in particular wherein the components of the air cleaning device ( 1 ), in particular the air conveyor ( 3 ), the filter device ( 2 ) with the filter element (s) ( 4a . 4b ) and optionally with the additional filter element ( 5 ) and / or optionally the energy supply device ( 8th ), from the housing ( 2 ) are included. Air cleaning device according to claim 33, characterized in that the housing ( 2 ) at least one air inlet opening ( 6 ) and / or at least one air outlet opening ( 7 ) and / or that the housing ( 2 ) Receiving devices for receiving the filter device ( 2 ), in particular of the one or more filter elements (s) ( 4a . 4b ) and / or optionally the additional filter element ( 5 ), and / or that the filter device ( 2 ), in particular the filter element ( 4a . 4b ) and / or optionally the additional filter element ( 5 ), replaceable in the housing ( 2 ) are integrated. Air cleaning device according to one of the preceding claims, characterized in that the air cleaning device ( 1 ) is designed to be mobile and / or portable. Air cleaning device according to one of the preceding claims, characterized in that the air cleaning device ( 1 ) a mold, which an integration and / or attachment of the air cleaning device ( 1 ) in and / or with equipment (s) of the room to be cleaned. Air cleaning device according to one of the preceding claims, characterized in that the air cleaning device ( 1 ) Fastening and / or receiving devices for preferably reversible attachment of the air cleaning device ( 1 ) on equipment of the space to be cleaned. Air cleaning device according to one of the preceding claims, characterized in that the air cleaning device ( 1 ) In the operating state, an air flow rate of 5 to 200 m ³ / h, in particular 10 to 175 m ³ / h, preferably 15 to 150 m ³ / h, preferably 20 to 125 m ³ / h, and / or that the air purification device ( 1 ) for the purification and / or filtration of air in rooms with a volume of up to 50 m ³ , in particular up to 30 m ³ , preferably up to 20 m ³ , preferably up to 10 m ³ , is suitable. Use of an air cleaning device according to one of the preceding claims for processing and / or Purification and / or filtration of air in particular closed Rooms. Use according to claim 39, characterized that the enclosed spaces are passenger compartments and / or cabins of motor vehicles. Use according to claim 39 or 40, characterized that the air to be treated is free from dust, in particular road dust, (Flower) pollen, bacteria, viruses, (fungal) spores, allergens, (Cigarette ten-) smoke, odors or the like, and gaseous Odors and pollutants is purified. Process for the purification and / or filtration of Air in particular closed rooms, in particular Passenger cells and / or cabins of motor vehicles, characterized in that in that an air cleaning device according to one of the aforementioned Claims operated in the particular closed space especially for a period of up to 12 hours, in particular up to 10 hours, preferably up to 8 hours.