DE102009011059B4 - Mobile device for air purification, its use and method for purifying air - Google Patents

Abstract

Air purification device (1) for the purification of air in particular closed rooms, wherein the air cleaning device (1) comprises a filter device (2) and an air conveyor (3) for the flow of the filter device (2) with air, wherein the filter device (2) at least two from each other differently formed filter elements (4a, 4b) each having fixed to a carrier particulate adsorbents for the adsorption of odors and / or pollutants, wherein the carrier of the filter element (4a, 4b) is a mat-shaped three-dimensional support, wherein the support of the filter element (4a , 4b) is a foam material in the form of an open-cell or open-cell foam, wherein the foam is stiffened and cured by impregnation with a chemical curing agent and the curing agent is an adhesive or other adhesive mass, which also serves to fix the particulate adsorbents, said particulate adsorbents of the filter element (4a, 4b) are at least 50% freely accessible to the odors and / or pollutants to be adsorbed and are not covered with adhesive, and wherein the respective filter elements (4a, 4b) are mutually different porosities of the respective carriers and from each other have different mean particle diameter of the respective particulate adsorbents, wherein the filter elements (4a, 4b) are arranged such that in the operating state of the air cleaning device (1) or the filter element (s) (4a, 4b) with the greater porosity of the respective carrier and with the larger average particle diameters of the respective particulate adsorbents in the direction of the inflowing air in front of the filter element (s) (4a, 4b) is arranged with the smaller average particle diameters of the respective particulate adsorbents and with the smaller porosity of the respective carrier (are).

Description

The present invention relates to an air cleaning device according to the preamble of claim 1, which is particularly suitable for the purification or filtering of air (i.e., in particular for the treatment of air) in particular closed spaces, preferably for passenger compartments or cabins of motor vehicles. Furthermore, the present invention relates to the use of the air cleaning device according to the invention for the purification or filtration of air in particular closed rooms and a method for the purification or filtration of air using the air cleaning device according to the invention.

In rooms in which there is little or no exchange of air, as is the case for example for passenger compartments or cabins of motor vehicles, there are often high odor and pollutant loads, especially when smoking or eating in the passenger compartments or cabins. As particularly unpleasant associated with health risks cigarette smoke or tobacco smoke is perceived, which is often still noticeable and disturbing over days and weeks after the cigarette or tobacco consumption. In addition, from interior furnishings, such. As vehicle seats, dashboards, door panels or the like, odors or pollutants are discharged into the environment, which is equally disadvantageous. In addition, in addition to the aforementioned odorants or pollutants, especially in motor vehicles, pollutants originating from road traffic, such as exhaust gases, particulate matter or the like, are added, which can penetrate into the interior of motor vehicles. The aforementioned odors and pollutants can lead to negative effects, such as malaise, headache, lack of concentration, and even cause serious health risks.

Even a high (air) humidity in rooms with low air exchange often leads to an odor, which is particularly associated with an infestation of mold, which can lead to a high load of air with spores. Spoiled food or the like can lead to an unpleasant odor nuisance in closed rooms. Pollen and other allergens present in the air also form another source of stress.

The problem described above is particularly serious in passenger compartments or cabs of motor vehicles, since there is a relatively small space or air volume and the exchange with outside air is not always effective. For one thing, the air exchange through the ventilation system of a vehicle is limited, and on the other hand, the outside air itself be enriched with odors or pollutants, as it is z. B. may be the case in heavy traffic. Added to this is that the ventilation system is not active when not operating the motor vehicle and thus existing odorants or pollutants in the room can not be removed, so that the odors or pollutants can so to speak, set in the interior. Especially in passenger compartments or cabs of motor vehicles disturbing odors or high pollutant concentrations often occur in high concentrations, which is also related to the fact that due to the small volume of space or air odors or pollutants can not be diluted sufficiently, especially there Each occupant of a motor vehicle, a very small volume of space or air is available.

In addition, odors or pollutants in the interior parts of a motor vehicle, for example, in the seats, penetrate and thus remain in the vehicle over a long period of time or after contamination is slowly released back into the air of the interior ("cold cigarette smoke") , Such loaded vehicles often have a lower sales value.

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. However, such systems are not effective in terms of neutralization 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 sometimes result in this light non-optimal filter performance.

The DE 601 32 253 T2 describes a regenerable air purification device having a filter holder with a regenerative sheet based on activated carbon fibers (ACF sheet). By a control system it is determined when the filter is regenerated by the supply of heat. Heat is generated by current flowing through the ACF sheet which is created by a pair of electrodes spaced on opposite sides of the ACF sheet.

Furthermore, the describes DE 195 21 665 A1 the use of an adsorption filter layer which can be regenerated by washing on the basis of a highly air-permeable carrier material as an odor filter for extractor hoods. The odors are removed by means of fixed adsorbents with an average particle diameter of between 0.2 and 2 mm based on activated carbon.

Against this technical background, it is therefore an object of the present invention to provide an air purification device for the treatment or purification or filtration of air for in particular closed rooms, which at least largely avoids or at least mitigates the disadvantages of the prior art described above. In particular, such an air cleaning device should meet the high requirements in terms of removal of pollutants, odors and toxins from the air to be purified in the indoor use. In addition, such a system should be mobile and have easy handling.

The above-described problem is solved in the context of the present invention by the air cleaning device according to claim 1. Further, advantageous embodiments of the air cleaning device according to the invention are the subject of the relevant subclaims.

Another object of the present invention is the inventive use of the air cleaning device for the purification of air in particular closed rooms according to claim 32. Further, advantageous embodiments of the inventive use are the subject of the relevant subclaims.

Finally, another object of the present invention, the method for the purification of air in particular closed rooms according to claim 35.

The Applicant has now surprisingly found that the above-described object can be achieved in that according to the invention an air cleaning device is provided which comprises a filter device and an air conveyor for flowing the filter device with air, wherein the filter device at least one 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 with respect to the elimination of odors and toxins 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. Due to the special design of the filter device, the air cleaning device according to the invention has both filter or filtration properties, d. H. Properties for removing dust or suspended matter from the air to be purified, as well as adsorptive properties on, d. H. Properties for the adsorptive removal of odors, pollutants and toxins. Due to the use of adsorbents fixed to support structures, the air purification device according to the invention also has a fluidic optimization.

The air cleaning device according to the invention is, in particular, a mobile or portable system which has its own air conveying device and, according to a preferred embodiment, its own power supply device, so that the system according to the invention can be easily handled and used universally. In addition, the air cleaning device according to the invention has compact external dimensions, which makes handling easier and increases the range of use. As described below, the air cleaning device according to the invention is particularly suitable for the purification of air in small-volume rooms, such as passenger compartments or the like, but also for the purification of air in small interiors, such as storage or pantry or the like.

In particular, the Luflreinigungsvorrichtung invention can be placed when not in use but also in the operation of a motor vehicle in the interior of the vehicle or in particular reversibly attached and put into operation, so that in this way in an effective manner (eg., Overnight) odors or pollutants be eliminated, such. B. cigarette smoke in smoking vehicles. The effective removal of odors and / or pollutants - 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 occupants and to an appreciation of the motor vehicle as a whole ,

It goes without saying that embodiments, embodiments, advantages and the like, which are carried out below for purposes of avoiding repetition only to an aspect of the invention, of course, apply accordingly also with respect to the other aspects of the invention.

The subject of the present invention, according to a first aspect of the present invention, is thus an air cleaning device for the purification of air in especially closed spaces, the air cleaning device having a filter device and an air conveying device for the air flowing through the filter device,
wherein the filter device has at least two mutually differently formed filter elements each with fixed on a support particulate adsorbents for the adsorption of odors and / or pollutants,
wherein the support of the filter element is a mat-shaped three-dimensional support, wherein the support of the filter element is a foam material in the form of an open-cell or open-cell foam, wherein the foam is stiffened and cured by impregnation with a chemical curing agent and the curing agent is an adhesive or other adhesive which also serves to fix the particulate adsorbents, wherein the particulate adsorbents of the filter element to at least 50% for the odors and / or pollutants to be adsorbed freely accessible and are not covered with adhesive, and
the respective filter elements having mutually different porosities of the respective carriers and different mean particle diameters of the respective particulate adsorbents, the filter elements being arranged such that in the operating state of the air cleaning device the filter element (s) having the greater porosity of the respective carriers and with the larger average particle diameters of the respective particulate adsorbents in the direction of the inflowing air in front of the filter element (s) is arranged with the smaller average particle diameters of the respective particulate adsorbents and with the smaller porosity of the respective carrier (are).

The air cleaning device according to the invention combines the positive properties of an air filter with a filter function against suspended matter, such as dusts or aerosols, with adsorptive properties, for example to gaseous substances, so that overall results in a high efficiency with respect to the purification of indoor air. The air cleaning device according to the invention represents a kind of self-sufficient system, which can be operated independently of external energy sources, and it can be used universally due to its compact design for a variety of applications with very good manageability. The air cleaning device according to the invention is therefore in total an air filtration device with adsorptive properties.

In this context, the Applicant has found in a completely surprising manner that by using a special filter device with at least two filter elements which have attached to a carrier particulate adsorbents for the adsorption of odors or pollutants, a significant increase in the filtration or adsorption can be realized. Without wishing to be limited to this theory, the significantly increased efficiency can be justified, for example, by virtue of the fact that the adsorbents fixed to the carrier have improved accessibility for the air to be treated, so that harmful or toxic substances, but also suspended solids, are effective in this way can be removed from the air.

In addition, due to the use of special carrier a lane formation is avoided, which equally leads to a reduction of the flow resistance, so that the filter elements caused by the pressure drop is low, which further improves the performance or what causes the system according to the invention with relatively low-performance and energy-saving air handling equipment can be operated. Due to the use of special support structures with adsorbents fixed thereto, the amount of adsorbents as a whole can also be reduced, which is advantageous against the background of production efficiency or with regard to the reduction of production costs. In addition, the ease of handling is facilitated, for example because the special filter elements, for example, compared to loose beds can be easily replaced. Also results in a better possibility of combining different types of filter elements, so that the air cleaning device according to the invention can be tailored to a certain extent with respect to the respective application area. In addition, the regenerability of the adsorbents and thus the recycling of the filter elements is also significantly improved, since the increased accessibility of the adsorbents is also advantageous in the context of regeneration processes.

In the context of the present invention, it can be provided that the particulate adsorbents of the filter element are preferably fixed to the carrier by means of a discontinuous, in particular punctiform, applied adhesive. In this regard, the adhesive may be a hot melt adhesive, particularly a reactive or non-reactive hot melt adhesive, or a thermoplastic adhesive. Associated adhesives are the Person skilled in the well-known, so that in this regard requires no further comments.

To achieve a high adsorption or filter efficiency, it is provided according to the invention that the particulate adsorbents of the filter element are at least 50%, in particular at least 60%, preferably at least 70%, freely accessible to the adsorbent odors and / or pollutants. The particulate adsorbents of the filter element are at least 50%, in particular at least 60%, preferably at least 70%, not covered with adhesive, in order to ensure in this way a high contact surface and high accessibility for the air to be purified.

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 amount of odor and / or Schadadsadsorbierenden particulate adsorbents should be designed such 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 derived pollutants and / or odors Permanently adsorptive bind or remove.

The particulate adsorbents of the filter element should be granular, preferably spherical. 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 may 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, it is particularly preferred to use activated carbon which has a high activity with regard to the adsorption of toxic or pollutants, but also with regard to the adsorption of odorous substances. Without wishing to be limited to this theory, the abovementioned particulate adsorbents have pores for receiving or storing, in particular adsorption, odors or pollutants. In other words, the particulate adsorbents have porous structures for receiving odor or pollutants, so that they are effectively removed from the air to be purified. Due to the relatively nonspecific adsorption properties of the adsorption materials used according to the invention, the air cleaning device according to the invention is suitable for the adsorption of any noxious, poisonous and odorous substances, so that the device according to the invention can also be universally used against this background.

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 be.

In particular against the background of the further improvement of the adsorption properties and the regenerability of the adsorbents, it can be provided according to the invention that the particulate adsorbents of the filter element are 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; 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. Such catalyst impregnation may also be considered for the adsorbents listed above.

To achieve good flow properties, the support of the filter element should be gas-permeable, in particular air-permeable, and / or water-permeable and / or water-vapor-permeable.

In the context of the present invention, it is provided that the support for the particulate adsorbents of the filter element is a gas-permeable, in particular air-permeable, mat-shaped three-dimensional support. According to the invention, the carrier of the filter element is a foam material in the form of an open-cell or open-cell foam.

In this case, the particulate adsorbents should be fixed to the walls of the cells or pores of the foam material, in particular foam. The use of special foams, in particular as they are still precisely defined below, leads to a significantly increased performance of the air cleaning device according to the invention. In particular, the use of such systems effectively prevents leakage, so that optimum flow characteristics with respect to the air to be filtered result. In addition, such carrier systems can be acted upon with the adsorbents such that optimum accessibility of the adsorbents with respect to the air to be purified is present.

According to this embodiment of the invention, the support of the filter element should be an open-cell and / or open-cell 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.

The support of the filter element should be an open-pored and / or open-cell foam based on polyurethane (PU foam) or polyolefin (PO foam), in particular a preferably large-pore reticulated polyurethane foam. According to the invention it can be provided that the carrier is an open-pore or an open-cell foam, in particular foam, with an average 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) of 5 to 50 ppi, in particular 10 to 30 ppi, and / or if the support 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.

The carrier of the filter element should be self-supporting. In addition, the support of the filter element should be thermally resistant, in particular to at least 80 ° C, preferably to at least 100 ° C, more preferably to at least 120 ° C.

Furthermore, it is provided according to the invention that the carrier of the filter element, d. H. The foam, stiffened and cured by chemical curing. In this context, it is inventively provided that the carrier of the filter element, d. H. the foam, impregnated with a chemical curing agent and subsequently cured. In this case, the curing agent is an adhesive or other adhesive, which also serves to fix the particulate adsorbents.

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 also 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 a further embodiment of the present invention, it may be provided that the filter elements additionally comprise activated carbon fibers or that the air purification device according to the invention comprises additional filter elements with activated carbon fibers. Through the targeted use of activated carbon fibers, the adsorption behavior of the air cleaning device according to the invention can be improved overall, in particular in combination with the particulate adsorbents. For activated carbon fibers have an optimized adsorption kinetics, wherein odor or poison and pollutants are effectively adsorbed for longer periods, while particulate adsorbents generally have a very good "spontaneity" in terms of adsorption, so that in this way by the targeted Combination of the respective adsorptive materials the adsorption behavior is improved overall.

As for the activated carbon fibers, they may be prepared by carbonizing and subsequently activating suitable starting organic fibers, especially cellulose fibers, cellulose derivative-based fibers, 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 can 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.

As far as the combination of the particulate adsorbents with the activated carbon fibers is concerned, it is advantageous if the average particle diameter of the particulate adsorbents is at least three times, in particular at least four times, preferably at least five times, more preferably at least about Six times, larger than the average fiber diameter of the activated carbon fibers.

According to the invention it can also be provided in this context that the particulate adsorbents and the activated carbon fibers are arranged on separate carriers. In this connection, the carrier with the particulate adsorbents and the carrier with the activated carbon fibers can form a composite. Equally, it is also possible that the particulate adsorbents and the activated carbon fibers attached to the same carrier, in particular glued thereto.

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

In the context of the present invention, it is provided that the air cleaning device has at least two filter elements, preferably a plurality of filter elements, wherein the filter elements are formed differently from each other. In this regard, the respective filter elements may be formed as previously defined. The air cleaning device according to the invention may in particular have at least three, preferably at least four or more filter elements, wherein the filter elements with respect to the flow of air can be arranged in a sense in series in the air cleaning device according to the invention.

According to this embodiment, the respective filter elements have mutually different average particle diameters of the particular adsorbents used or different average pore diameters of the respective carriers or mutually different porosities of the respective carriers.

According to the invention it is provided that the filter elements are arranged such that in the operating state of the air cleaning device or the filter element (s) with the larger average particle diameters of the respective particulate adsorbents or with the larger average pore diameter of the respective carrier or with the larger porosity of respective carrier in the direction of inflowing air before or the filter element (s) are arranged with the smaller mean particle diameters of the respective particulate adsorbents or with the smaller mean pore diameter of the respective carrier or with the smaller porosity of the respective carrier.

In other words, it is inventively provided that the filter elements with the larger average diameters of the particulate adsorbents or with the larger average pore diameters of the respective carrier or with the larger porosity of the respective carrier with respect to the direction of flow of air in the operating state of the device according to the invention are arranged upstream of the other filter elements. 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 stated above, it can thus be provided in the context of the present invention that the or in the operating state downstream arranged (s) filter element (s) activated carbon fibers, in particular as defined above, or have, as this the adsorption behavior - as described above - Overall, can be further improved.

According to the invention, it is possible that each individual filter element is additionally equipped with a particle and / or aerosol filter layer, preferably a particle and aerosol filter layer. In this regard, it is also noteworthy that the carrier as such, be it in the form of a two-dimensional or three-dimensional carrier as defined above, can already exert the function of a particle or aerosol filter layer as such.

In the context of the present invention it can also be provided that the air cleaning device, in particular the filter device, has at least one additional filter element with at least one particle and / or aerosol filter layer.

In this way, dusts or suspended solids or aerosols from the air to be purified can be filtered in an efficient manner, while at the same time relieving the adsorbents. Thus, a further improved protection function against, for example, contained in the combustion gases of diesel engines or formed by tire and brake abrasion fine dust can be ensured. The pollen filter function can be further improved by this measure.

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 .

Particularly good results with regard to the filtration of dusts or suspended matter can be achieved if the particle and / or aerosol filter layer is a textile fabric consisting of textile fibers, wherein the average diameter of the textile fibers is 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, very particularly preferably at most 2 μm, and / or wherein the diameter of the textile fibers is in the range from 0.05 to 50 μm, in particular 0.1 to 50 μm, preferably 0, 2 to 30 microns, more preferably 0.2 to 20 microns, most preferably 0.5 to 10 microns, should be.

Furthermore, the particle and aerosol filter layer may be a textile fabric consisting of textile fibers with pores or meshes bounded by the textile fibers. In this regard, the textile fabric may have a mean pore size or average mesh size of at most 200 μm, in particular at most 100 μm, preferably at most 75 μm, particularly preferably at most 50 μm, very particularly preferably at most 40 μm.

In this context, it may equally be provided that the particle and / or aerosol filter is a textile fabric consisting of textile fibers with pores or meshes bounded by the textile fibers, wherein the ratio of the mean pore size or mesh width to the mean diameter of the textile fibers is in the range of 0 , 1 to 2,000, in particular 1 to 500, preferably 5 to 350, particularly preferably 10 to 300, very particularly preferably 25 to 250, should lie.

The particle and / or aerosol filter layer can be a textile fabric consisting of textile fibers, natural and / or synthetic fibers, preferably synthetic fibers (chemical fibers), being able to be used as textile fibers, in particular from the group of polyester (PES); Polyolefins such as polyethylene (PE) and polypropylene (PP), polyvinyl chloride (CLF); Polyvinylidene chloride (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 can have an average efficiency E _m according to 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 according to 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%, exhibit. The particle and / or aerosol filter layer can also have an integral initial transmittance D _i according to 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 %, more preferably at most 20%, most preferably at most 10%.

In addition, the particle and / or aerosol filter layer at an inflow rate of 0.1 m / s, an average deposition rate 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%. Finally, the particle and / or aerosol filter layer at an inflow rate of 0.1 m / s, an average deposition rate against particles and / or aerosols with diameters ≥ 2 microns, especially ≥ 1.5 microns, of at least 95%, especially at least 98% , preferably at least 99%.

As far as the particle and / or aerosol filter layer is concerned, it 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 layer can be fixed to a carrier, in particular as defined above.

It is particularly advantageous if, in the context of the present invention, a particle and / or aerosol filter layer designed as a HEPA filter (High Efficiency Penetration or Particulate Air) or ULPA filter (Ultra Low Penetration or Particulate Air) is used.

As far as the arrangement of the additional filter element with the particle and / or aerosol filter layer is concerned, it is particularly advantageous if it is arranged in the flow direction of the air in front of the or the other filter element (s). In other words, the filter element should be arranged with the particle and / or aerosol filter in the operating state of the air cleaning device upstream of the other filter element (s). In this way, the adsorbents are not influenced by the previously filtered out dusts or suspended solids in their adsorption properties.

As far as the shape or three-dimensional design of the filter elements including the additional filter element is concerned, this can vary within wide ranges. Thus, it may 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 - independently of one another - are plate-shaped. Equally, however, it is also contemplated that the or the filter element (s) or the additional filter element are formed as a hollow cylinder. In such a configuration with a hollow cylindrical structure of the respective filter elements, the respective filter elements should have different diameters from each other, so that they can be arranged nested, as it were nested, in this regard, the aforementioned sequence of filter elements should be maintained with respect to the flow direction of the air. For example, a filter element having a particle and / or aerosol filter layer should, as it were, be arranged as an inner hollow cylinder when the system of a plurality of hollow cylindrical filter elements is impinged on the inside with the air to be purified by means of the air conveyor.

In the context of the present invention, it is particularly advantageous if the or the filter element (s) or the additional filter element is formed 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.

As far as the air conveying device of the air cleaning device according to the invention is concerned, it may be an in particular electrically operated fan or fan or a particularly electrically operated fan.

The air conveyor should be located in the operating state of the air cleaning device upstream of the filter elements and / or upstream of the additional filter element. Alternatively, it is also possible within the scope of the present invention if the air conveying device is arranged downstream of the respective filter elements or between the respective filter elements. Furthermore, it is advantageous if the air conveying device is designed to be adjustable, in particular with respect to its air flow rate.

As stated above, the air cleaning device according to the invention is preferably a mobile or portable system. In this context, it is advantageous if the air cleaning device according to the invention has its own energy supply device, in particular for the operation of the air conveyor. In this context, the power supply device may be an accumulator, a battery, a fuel cell or even a solar cell or the like. Accordingly, the air cleaning device according to the invention is energetically self-sufficient, so that operation without external power supply is possible, which is advantageous for example when operating in a motor vehicle, since in this way the motor vehicle battery is not charged. Alternatively or in addition to the aforementioned measure with the independent power supply, but it can also be provided that the air cleaning device according to the invention comprises connection means for connection, for example, to the electrical system of a motor vehicle. Similarly, a network operation comes into consideration, in this respect preferably corresponding power supplies are used. In general, the air cleaning device according to the invention is a low-powered system.

The air cleaning device according to the invention generally has a housing, which is preferably made of plastic and / or metal, wherein the metal or the plastic can still be provided with surface coatings, for example with a paint. In this case, the respective 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 should be taken from the housing or integrated into the housing.

In this case, the housing should have at least one air inlet opening and / or at least one air outlet opening, which are preferably arranged at different locations of the housing and on the other hand can be optimized in terms of their respective function, namely air inlet for the air to be purified and air outlet for the purified air. Thus, for example, the air outlet opening can be designed such that it is greater than the air inlet opening or that this diffuser means for broadening the air flow, so that no unpleasant draft arises when using the air cleaning device according to the invention.

The housing of the air cleaning device according to the invention may, for example, also receiving devices for the filter device or for the filter elements, in this respect should be ensured in particular that the filter elements or the filter device or the filter elements are easily removed from the housing to easily change the corresponding To allow filter device or filter elements. In this regard, the housing may also be provided with flaps or the like, which allow easy access to the filter elements and the filter device. In addition, the housing may also have air guiding devices for optimizing the passage of air through the filter elements or through the filter device.

The shape of the air cleaning device according to the invention can vary within wide ranges, wherein in particular an optimization of the shaping against the background of the respective use can be considered. Thus, it may be provided in the context of the present invention that the air cleaning device according to the invention has a shape which integrates or fastening the air cleaning device according to the invention in or with Inneneinrichtungs- or Ausstattungsgegenstände (s) of the space to be cleaned, such as seats, floor components, glove boxes , Center consoles, shelves or the like, allows. For example, the air cleaning device according to the invention to contours or shapes of a Be adapted to motor vehicle interior, so that a secure, in particular positive fixing of the air cleaning device according to the invention is possible.

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, center consoles, 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 this context, the typical field of application of the air cleaning device according to the invention is formed by small spaces or the like, in this regard, in particular motor vehicle interior, passenger cabins or the like come into consideration. But even for small rooms in apartments, houses or the like, such as storage rooms or small rooms, the air cleaning device according to the invention is particularly suitable.

The air cleaning device according to the invention may have a number of other features that further increase the range of application of the air cleaning device according to the invention or further improve handling: It may be provided that the air cleaning device according to the invention additionally comprises cooling elements or heating elements for temperature regulation. In addition, the air cleaning device according to the invention may comprise regulating or control elements, such as odor and / or gas sensors, or a timer, in order to enable a regulated or controlled operation of the air cleaning device. In addition, it may be provided that the air cleaning device according to the invention is remotely controllable. A coupling with the electrical control of motor vehicles, for example with a CAN bus system, may be considered, for. B. to control the air cleaning device according to the invention on the on-board system of the motor vehicle. Also, a connection - for example by means of suitable air duct elements, such as air hoses - to a motor vehicle fan into consideration, so that filtered in this way, for example, originating from the motor vehicle fan air or coming from the motor vehicle fan air to be purified indoor air in the air cleaning device according to the invention, so that so-called from the outside air is at least partially mitaufgereinigt by the air purifier according to the invention. Thus, a mixed operation of the air cleaning device according to the invention is possible in which a part of the inner air and at least a part of externally supplied air is cleaned. The air cleaning device according to the invention may also comprise means for enriching the air with fragrances.

Further advantages, features, aspects and features of the present invention will become apparent from the following description of an embodiment shown in the single figure. It shows:

Fig. A schematic sectional view of the side view of the air cleaning device according to the invention, according to which the system according to the invention comprises two filter elements each with fixed to a carrier particulate adsorbents and an additional 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 the 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 filtering 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 element is concerned 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 of the air cleaning device according to the invention, as defined above, for the purification or filtration of air in particular closed spaces.

As stated above, the particularly enclosed spaces may be passenger compartments or cabins of motor vehicles, but also small interior spaces, for example of apartments or houses, such as storage rooms or the like.

In the context of the inventive use of the air purification device according to the invention, the air to be treated by dust, especially road dust, (flower) pollen, bacteria, viruses, (fungal) spores, allergens, (cigarette) smoke, odors or the like, and cleaned gaseous odors and pollutants in an efficient manner.

Finally, the present invention - according to a third aspect of the present invention - the inventive method for the purification of air in particular closed rooms, such as passenger compartments or cabins of motor vehicles. The inventive method is characterized in that the air cleaning device according to the invention, as defined above, is operated in the particular closed space, in particular for a period of up to 12 hours, in particular up to 10 hours, preferably up to 8 hours.

Further embodiments, modifications and variations of the present invention will be readily apparent to those skilled in the art upon reading the description and practicable without departing from the scope of the present invention.

The present invention will be illustrated by the following embodiments, which by no means limit the present invention.

WORKING EXAMPLES

There are made different air cleaning devices, each of which is arranged in a housing, a fan with a stand-alone power supply in the form of a battery. The fan is disposed in the housing at an inlet for air. With regard to the operating state of the respective air cleaning device, filter elements, as stated below, are arranged downstream of the fan, through which the air to be purified flows in the operating state. The purified air is discharged through an air inlet opening in the housing opposite air outlet opening into the environment.

On the one hand, a non-inventive air cleaning device (A) is produced, which has an additional filter element based on a particle and / or aerosol filter layer of a textile fabric having an average pore size of about 100 microns, said additional filter element a Adsorption filter element is preceded by activated carbon in bulk, d. H. is arranged upstream in the operating state.

On the other hand, a non-inventive air cleaning device (B) and an air cleaning device (C) according to the invention are provided, each of which is identical to the non-inventive air cleaning device (A) identical and also identically arranged (upstream of the filter elements with adsorbents) additional filter element based on a particle and / or aerosol filter layer.

The second non-inventive air purification device (B) comprises a filter element with particulate adsorbents, wherein as carrier a three-dimensional support based on an open-cell polyurethane foam with a mean pore diameter of 4 mm is used, which with particulate adsorbents in the form of activated carbon having an average particle diameter of 0 , 8 mm is occupied.

The air cleaning device (C) according to the invention, in comparison to the second non-inventive air cleaning device (B) nor an additional filter element with adsorbents, which is 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 alike a three-dimensional support based on a polyurethane foam, but in this respect an open-cell foam is used with an average pore diameter of 1 mm. 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 purification device (A) results after the test, a VOC ambient air concentration of 1,500 ng / m ³ , while for the second non-inventive air cleaning 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 present test results prove the excellent properties of the air cleaning device (C) according to the invention with respect to the filtering or adsorption of pollutants from the air, wherein a significant increase can be achieved if used in the above-mentioned manner special filter elements based on foams with activated carbon and combined.

Claims (36)

Air purification device ( 1 ) for the purification of air in particularly closed rooms, wherein the air cleaning device ( 1 ) a filter device ( 2 ) and an air conveyor ( 3 ) for the flow through the filter device ( 2 ) with air, wherein the filter device ( 2 ) at least two differently shaped filter elements ( 4a . 4b ) each having attached to a carrier particulate adsorbents for the adsorption of odors and / or pollutants, wherein the carrier of the filter element ( 4a . 4b ) is a mat-shaped three-dimensional support, wherein the support of the filter element ( 4a . 4b ) is a foam material in the form of an open - cell or open - pore foam, wherein the foam is stiffened and cured by impregnation with a chemical curing agent and the curing agent is an adhesive or other adhesive mass, which also serves to fix the particulate adsorbents, wherein the particulate adsorbents of Filter element ( 4a . 4b ) are at least 50% freely accessible to the odors and / or pollutants to be adsorbed and are not covered with adhesive, and wherein the respective filter elements ( 4a . 4b ) have mutually different porosities of the respective carriers and different average particle diameters of the respective particulate adsorbents, wherein the filter elements ( 4a . 4b ) are arranged such that in the operating state of the air cleaning device ( 1 ) the filter element (s) ( 4a . 4b ) with the larger porosity of the respective carriers and with the larger average particle diameters of the respective particulate adsorbents in the direction of the inflowing air in front of the filter element (s) ( 4a . 4b ) is arranged with the smaller mean particle diameters of the respective particulate adsorbents and with the smaller porosity of the respective carriers. Air purification device according to claim 1, characterized in that the particulate adsorbents of the filter element ( 4a . 4b ) are 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 60%, preferably at least 70%, not covered with adhesive. Air purification device according to claim 1 or 2, 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 , completely particularly 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 1000 m ² / g, particularly preferably at least 1200 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 in that the support 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 particulate adsorbents are fixed to the walls of the cells or pores of the foam material, in particular foam. Air purification device according to one of the preceding claims, 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 preceding claims, 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 .-%, more 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 14, characterized in that the average particle diameter of the particulate adsorbents at least three times, in particular at least four times, preferably at least five times, more preferably at least about Six times, larger than the average fiber diameter of the activated carbon fibers. Air purification device according to claim 14 or 15, characterized in that the particulate adsorbents and the activated carbon fibers are arranged on separate carriers, 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 ( 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 17, characterized in that as a particle and / or aerosol filter a textile fabric, preferably an air-permeable textile material, is used, in particular wherein the fabric is a woven, knitted, knitted, scrim or fabric composite, in particular a non-woven, and especially is preferably a nonwoven and / or that the particle and / or aerosol filter layer 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 aerosol filter layer has a basis weight of at most 100 g / m ² , in particular at most 50 g / m ² . Air purification device according to claim 17 or 18, 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 claims 17 to 19, characterized in that the particle and / or aerosol filter is designed as a HEPA filter (High Efficiency Penetration or Particulate Air) or ULPA filter (Ultra Low Penetration or Particulate Air). Air purification device according to one of claims 17 to 20, 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 , most preferably at least 200 l · m ^-2 · s ^-1 or more, having a flow resistance of 127 Pa. Air purification 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 purification device according to one of the preceding claims, characterized in that the air purification 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 purification device according to one of the preceding claims, characterized in that the air purification 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 purification device according to claim 26, 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 purification device according to one of the preceding claims, characterized in that the air purification device ( 1 ) is designed to be mobile and / or portable. Air purification device according to one of the preceding claims, characterized in that the air purification 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 purification device according to one of the preceding claims, characterized in that the air purification 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 purification device according to one of the preceding claims, characterized in that the air purification 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 cleaning 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 the purification of air in particular closed rooms. Use according to claim 32, characterized in that the enclosed spaces are passenger compartments and / or cabins of motor vehicles. Use according to claim 32 or 33, characterized in that the reprocessed air of dust, in particular, road dust, (blossom) pollen, bacteria, viruses, (fungal) spores, allergens, (cigarette) smoke, odors or the like, and gaseous odors and pollutants is purified. A method for purifying air in particular closed rooms, characterized in that an air cleaning device according to one of the preceding claims is operated in the particular closed space. A method according to claim 35, characterized in that the air cleaning device for a period of up to 12 hours, in particular up to 10 hours, preferably up to 8 hours, is operated in the particular closed space.

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