Air filter combined with sample collection / sample analysis

Abstract

The present invention relates to a filter module (100) for filtering air (101) in at least one part of a building or air (101) in an exhaust purification unit of a production process. The filter module (100) can be arranged in a filter system (150) so as to be replaceable. The filter module (100) has a filter body (110) configured to filter the air when the air (101) passes through. The filter body (110) has a filter region (111) for filtering the air (101) passing through from air-borne substances and an analysis region (112) configured to assist in the analysis of air-borne substances and / or air quality. The filter body (110) is configured such that the pressure drop of the air flowing through the filter body (110) is less than 450 Pascals under a volumetric flow velocity of 0.1 m / s to 5.0 m / s through the filter body (110). The filter region (111) is configured such that under a pressure drop range of 10 Pa to 450 Pa through the filter module (100), the composition of the air flow in the analysis region (112) changes by less than 40% compared to the composition in the filter region (111). The analysis region (112) is configured relative to the filter region (111) such that more than 90% of the air (101) in the analysis region (112) comes into contact with the same air-borne substances as in the filter region (111).

Description

Technical Field

[0001] The present invention relates to a filter module and method for filtering air in at least one part of a building or air in an exhaust purification unit of a production process. Further, the present invention relates to a filter system having the filter module.

Background Art

[0002] A filter system in an indoor air system functions for ventilation and aeration of rooms in a building and filters harmful substances from the air. The filter also serves as a sampler, and the collected harmful substances can then be analyzed, i.e., after the filter's service life has ended.

[0003] When a normal air filter is used as a sampler and analyzed after its service life, due to the asymmetry of the air flow, it is often not considered that a part of the filter represents the entire load of the filter. This means that the content of the filter must be analyzed as a whole, which is associated with high material costs and analysis costs. Therefore, if a part of the flow region represents the load of the entire filter and can be analyzed, it is suitable for the purpose.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem of the present invention is to provide a filter that enables a more accurate analysis of the air to be filtered.

[0005] This problem is solved by a filter module and method for filtering air in at least one part of a building or air in an exhaust purification unit of a production process according to the subject matter of the independent claims.

[0006] In a first aspect, a filter module for filtering air of at least one part of a building or air of an exhaust purification unit of a production process is described. The filter module is arrangeable in a filter system so as to be replaceable, and the filter module has a filter body configured to filter the air when it passes through. The filter body has a filter region for filtering the air passing through from air accompanying substances and an analysis region configured to assist in the analysis of air accompanying substances and / or air quality.

[0007] The filter body is configured such that, under a volumetric flow velocity of 0.1 m / s to 5.0 m / s passing through the filter body, the pressure drop of the air flowing through the filter body is less than 450 Pascals. The filter region is configured such that, under a pressure drop range of 10 Pa to 450 Pa through the filter module, the composition of the air flow in the analysis region changes by less than 40% compared to the composition in the filter region, and the analysis region is configured such that, relative to the filter region, more than 90% of the air in the analysis region contacts the same air accompanying substances or air particles as in the filter region.

[0008] In another aspect, a filter system having a control unit and at least one filter module as described above is described, and the at least one filter module is suitable for exchanging analysis data necessary for assisting in the analysis of air accompanying substances and / or air quality.

[0009] In another aspect, a method for filtering air of at least one part of a building or air of an exhaust purification unit of a production process having the replaceable filter module as described above is described.

[0010] The filter system according to the invention is typically used for filtering and purifying air in a building or for purifying air in a factory production process. For this purpose, the filter system has, for example, an active flow generator, for example a ventilator, or is integrated into a building ventilation system having, for example, a central active flow generator.

[0011] The filter system has, for example, a housing, in which one filter module is arranged, or a number of filter modules are arranged in series along the air flow direction through the filter system or in parallel with respect to the flow direction. At this time, the filter module according to the invention is arranged in the filter system so as to be replaceable. For example, corresponding guide rails can be provided, along which the filter module can be inserted into the operating position inside the filter system. Furthermore, in order to arrange the filter module in a modular and replaceable manner in the filter system, for example, removable mounting means, for example screws or clamp fasteners, can be provided.

[0012] The filter module has, for example, a flat filter material fixed to a circulating support frame. The filter module can be configured as a pocket filter, with a number of pockets of filter material attached to the support frame, and the air flow is introduced into these pockets to filter the incoming air. Furthermore, the filter module may equally well be configured as a cartridge filter, a tube filter, a candle filter, a compact filter, or a HEPA filter.

[0013] The filter module according to the present invention, and in particular the filter material, is configured such that, under a volumetric flow velocity of 0.1 m / s to 5.0 m / s through the filter body, the pressure drop of the air flowing through the filter body is less than 450 Pascal. Accordingly, the filter module serves to purify a large amount of air under low pressure loss. Furthermore, these values can be structurally adjusted, in particular by the selection of the filter material and by the corresponding pore size of the tissue structure of the filter material.

[0014] The filter module in particular has a filter area that performs the function of filtering air. Furthermore, the filter module according to the present invention has an analysis area configured to assist in the analysis of air. Assisting in the analysis of air can mean, for example, that the air is branched in the analysis area and conveyed, for example, to an air analysis device within the filter system. In addition to this, as will be explained below, the analysis area can have active analysis members such as sensors, for example, or sample chambers for taking air samples or accompanying substances.

[0015] According to the present invention, the analysis area is configured such that, relative to the filter area, under a pressure drop range of 10 Pa to 450 Pa, in particular up to 250 Pa, or up to 150 Pa, through the filter module, the composition of the air flow in the analysis area changes by less than 40% compared to the composition in the filter area, and the analysis area is configured such that, relative to the filter area, more than 90% of the air in the analysis area comes into contact with the same air accompanying substances or air particles as in the filter area. The filter performance of the filter module according to the present invention, in particular of the filter area, is measured, for example, in accordance with EN ISO 16890 and is better than 50% for the grades of "ISO Coarse", "ISO ePM10", "ISO ePM2.5", or "ISO ePM1".

[0016] When the filter module operates within such a range of characteristic values, due to the arrangement of the filter area proposed in the present invention, it comes into contact with more than 90% of the same air entrained substances and / or air volume as the filter area. The composition of the air flow under a pressure drop variation of 50 Pa to 450 Pa through the filter system changes in the analysis area to less than 40%, particularly less than 25%, particularly less than 10%, and even more particularly less than 4% compared to the filter area.

[0017] Such a configuration is realized particularly when the analysis area is arranged and configured in an appropriate size at an appropriate position in the filter area or the filter module. For example, the analysis area has a sufficient interval with respect to the support frame of the filter module or with respect to the edge of the flow passage where the filter module is arranged in the filter system, and in this way, for example, it avoids the edge flow characteristics that cause different compositions of air entrained substances or air particles or different pressure drop ranges of air relative to the central filter area. Accordingly, the analysis area is arranged at an interval greater than 0.5 cm, greater than 2 cm, particularly greater than 8 cm from the edge area of the filter module.

[0018] The solution according to the invention is suitable, for example, for a filter module in the form of a pocket filter or for a secondary filter system. A secondary filter system generally represents an air circulation system for indoor installation in which filtering takes place. The secondary filter system may be mobile or stationary. In contrast, for example, controlled residential ventilation or an assembled and piped ventilation system is called a primary filter system. In a secondary filter system, it is possible to create a zone with a laminar air flow in which the corresponding filter module according to the invention is arranged. For example, the support frame of the filter material of the filter module forms a suitable mechanical strength platform, whereby additional members of the analysis area, such as sensors or air guiding members, can be attached directly or indirectly without sufficient vibration (so that each member does not rattle in the air flow). Such vibration reduction is particularly significant when vibration-sensitive sensors (such as MEMS or other electromechanical components) are used in the analysis area.

[0019] The filter module according to the invention provides integrated assistance for the online or offline analysis of the harmful substance load of the air flowing through, in particular based on the arrangement of the analysis area. In particular based on the arrangement of the analysis area, the analysis area can extract, for example, measured values or samples of the air that are representative of the air flow, in particular with time or quantity information providing capabilities.

[0020] In another exemplary embodiment, the analysis region has a collection volume for airborne substances. The analysis region can constitute, for example, a pocket or bag in which the collection volume is formed. Air particles or other airborne substances can be collected therein and, for example, analyzed later when the filter module is removed. Further, depending on the exemplary embodiment, a sensor may be installed in the collection volume for analyzing the collected airborne substances. For the pure sampling of airborne substances, solid air particles and / or liquid foreign matter that settle in the sampler are taken into consideration.

[0021] In an exemplary embodiment, the filter module is arranged in the analysis region in a particularly replaceable and / or removable manner and has a sampling device in which the collection volume is formed. The sampling device can be blocked, in particular, to partially, completely, and / or selectively block the collection volume. The sampling device can be blocked, for example, after a certain time period during which airborne substances are collected in the collection volume. The sampling device can then be removed and the collected air particles or liquid can be analyzed in an external laboratory. Based on the blocking, it is not possible, for example, to open the sampling device in a non-destructive manner. The sampling device can be, for example, a closable bag made of filter material and can have a closing mechanism such as a closable flap. The appropriate opening and closing of the sampling device can be controlled, for example, by a control unit of the filter system. As an alternative, the sampling device can be blocked by a technician during filter replacement. In this way, in the analysis region, one or more predefined sampling zones (i.e., collection volumes) can be provided that are removed at low cost for simple laboratory sampling and are protected against later contamination (including internal contamination, i.e., contamination by the operator, as well as external contamination, i.e., environmental contamination by the substances collected in the filter system). One possible implementation of such functionality can be a perforated plier with a closing cap (optionally integrated into the filter system), which is analyzed in the laboratory after removal.

[0022] In another exemplary embodiment, the analysis region has an adhesion region for adhering and accumulating airborne substances. The adhesion part can be configured, for example, through a defined configuration of the pore size of the filter material in the analysis region, or can be configured by a specific adhesive-like substance to which airborne particles in the air particularly adhere. Usually, since there are only a low proportion of foreign substances in the air flow, the means for causing adhesion in the analysis region serves to concentrate the substances in order to enable subsequent simple verification (on-site or subsequent offline). Through the time span of concentration, the actual content concentration of the airborne substances can be estimated later.

[0023] In another exemplary embodiment, the analysis region has a reactive region for the reaction and conversion of airborne substances and / or air components. The reactive region particularly has corresponding substances for reacting with a specific airborne substance or air component, binding it in the analysis region, and / or converting it into a measurable and analyzable substance. Certain airborne substances are not collectable by conventional methods (such as gases, such as the contained O2 or contained CO2 in air) or are unstable, and since these can be oxidized or reduced, for example, the corresponding conversion is preferred. The chemical (reacting and stabilizing accordingly) function or physical (blocking, separating) function provided in the reactive region preserves each substance for local indication (such as by color conversion or fluorescence) or for subsequent analysis (such as in a laboratory) (particularly by concentrating the airborne substances until each reaction becomes detectable). The analysis region is provided with a container, for example, in which the reactive region is configured. One example of this is a so-called test tube, such as a Draeger tube. The test tube is made of a thin glass tube closed at the ends by melting, for example. Inside, a substance is coated on an inert carrier material, and this substance serves as an indicator function after a chemical reaction with the airborne substances to be verified respectively, for example, after a visual reaction such as a color change.

[0024] In another exemplary embodiment, the analysis region has an air guiding region for coupling the air outflow force from the filter body. For example, the analysis region can have a tapered air guiding region, in which a certain proportion of the flowing air is accommodated and re-transported to a desired location in another piping system outside the filter module. For example, this proportion of air can be collected in the sampling container of the filter system and can be intended for further analysis. In this way, the air guiding region can deflect the proportion representing the air flow so that it can be reprocessed by a separate analysis unit. The main role at this time is to maintain the representative proportion even under pressure fluctuations, especially under the transition from laminar to turbulent flow.

[0025] In another exemplary embodiment, the analysis region has a sensor member for measuring at least one parameter of air contaminants and / or air quality. Direct measurement of foreign matter or a group of foreign matters in the air flow can be provided by the sensor member integrated in the analysis region. This can apply, for example, to fine dust of a specific diameter class. Further, for example, other foreign matters can be removed by filtration in advance, so that only specific air contaminants hit the sensor. When vortices occur due to the turbulent flow of air through the filter module, relatively heavy substances (particles, molecules, aerosols, etc.) move away radially from the diameter of the flow roller by centrifugal force, which leads to non-uniformity of the air flow composition. By ensuring the flux based on the present invention by the air module of the present invention, a representative air flow composition can be measured by the sensor even when a pressure difference occurs.

[0026] In another exemplary embodiment, the sensor member has a MEMS sensor. Further, the sensor member may be configured such that the sensor member can be utilized, in particular, for Fourier transform infrared spectroscopy (FTIR) and / or near-infrared spectroscopy. At this time, parameters such as the number of particles per unit volume can be measured. What may be particularly important at this time is that the air pressure change in the analysis region, and in particular the air pressure difference between the analysis region and the filter region, is minimized or blocked as much as possible. By the filter module of the present invention, the air pressure difference between the analysis region and the filter region is reduced, thereby enabling more accurate measurements by the sensor.

[0027] In an exemplary embodiment, the sensor member has a resistive sensor for measuring airborne substances and / or air quality. At this time, in order to measure the presence of any foreign matter in the air, for example, a trigger substance can be additionally used (for example, measurement based on the Bresl method). What is particularly important in this case is that the air flow through the analysis region represents the air flow and air quality within the filter system and responds to the air flow through the filter region.

[0028] The sensor member can have, for example, a microphone and can detect the noise level in a room, and particularly in the location of a noise source. By measuring and evaluating the noise level in the room, the number and intensity of the people engaged in vocal activities in the room can be estimated, and accordingly, the ventilation output of the blower unit can be adapted through the control unit. This is because the aerosol discharge by humans increases with the volume of vocalization. In other words, the control of the ventilation output can be adjusted in this way through the noise level in the room. The more people vocalize or the louder they vocalize, the more aerosol is discharged, and the blower output can be increased further. For example, in that case, additional acoustics of the appliance such as the blower unit are not perceived and do not interfere because of this. When one or more people are sitting quietly in the room, the blower output is reduced. This is because it must be quiet to concentrate on the work at that time, and almost no aerosol is discharged.

[0029] In an exemplary embodiment, the filter module has a communication unit for communicating data related to air contaminants and / or air quality to the control unit of the filter system, particularly for the control of the filter module. The communication unit is set up to transmit information related to air contaminants and / or air quality to the control unit or also to transmit a control signal that can be created based on the measured parameters, thereby generating, for example, a control signal related to a warning signal (alarm signal) or an air flow control signal.

[0030] In another exemplary embodiment, the filter body has a number of analysis regions. For example, two, three, or more analysis regions can be integrated into the filter module. This enables higher functionality and a more accurate analysis of air contents and air contaminants over a wider area of the filter module.

[0031] In another exemplary embodiment, the analysis region is configured to indicate the presence of a substance class and is configured to filter and collect air particles from the air. A substance class is understood in chemistry to be any substance that can be grouped by common characteristics. Depending on what characteristics are used for classification, each substance may belong to multiple groups. Additionally or alternatively, the analysis region can be configured to convert a sample of air particles, and in particular, sorbitol and / or activated carbon are provided in the analysis region for the conversion. In another special exemplary embodiment, the filter module includes, on the one hand, a broadband-responsive trigger system that reacts to a specific substance class and visualizes its presence. On the other hand, the analysis region can include a sampling section (which can, in some cases, concentrate substances and / or react, initiate, and convert them over a long period of time, which can be embodied, for example, by activated carbon or sorbitol). In this way, when a visual contamination indication shows a reaction at a later time, it becomes possible to analyze in detail the substances collected in the sampler. Specific mechanisms for detecting the entire substance class can provide layer detection for, for example, dust and heavy metals such as iron, mercury, copper, etc., which can be detected colorimetrically by traditional inorganic colored complexes. For example, iron and Cu form a ferrocyanide layer and develop a blue or orange color. Furthermore, layer detection of oxidizing gases such as, for example, NOx and ozone can be performed. At this time, a color reaction from colorless to blue can be caused by potassium iodide-iodine-starch.

[0032] In particular, in the analysis area, the viral load of the air to be filtered can be detected by the above-described trigger system. For example, the concentration of the Sars-CoV 2 virus can be determined. At this time, a biosensor is arranged as a sensor member in the analysis area. The air to be filtered flows over the biosensor. The biosensor can have, for example, a biomarker that reacts with the virus and causes a measurable (e.g., optical) reaction corresponding thereto.

[0033] The biosensor can function based on the PCR test method (real-time quantitative reverse transcription polymerase chain reaction), and based on this, the genomic sequences of viruses such as the Sars-CoV 2 virus are detected. Furthermore, the biosensor can function in the form of an antigen test and can embody fluorescence-based or chemical luminescence-based test methods, in which case, for example, viral proteins are verified with reference to specific coloring.

[0034] In an embodiment of the biosensor, it may be configured as a waveguide interferometer. Such a photonic biosensor recognizes various light-based phenomena of the virus for the rapid verification and quantification of the virus or the corresponding biomarker. Among various photonic biosensors, silicon photonic biosensors based on the principle of evanescent waves are applicable.

[0035] Furthermore, the biosensor may be configured as a nanofotonic biosensor based on an interferometric bimodal waveguide (BiMW). To capture and verify the virus from the sample, the surface of the BiMW sensor is modified by a special receptor that targets an external antigen of the virus, such as the spike (S) protein of SARS-CoV-2. As soon as the air to be filtered flows over the biosensor, virus particles are captured by the receptor on the sensor surface, generating an interferometer signal that can be recorded in real time. The response of the sensor is directly proportional, for example, to the virus concentration in the air to be filtered, thus enabling the accurate quantification of the virus load in the air.

[0036] Furthermore, a phenol layer such as bisphenol, nonylphenol, chlorophenol, etc. can be provided, in which case a color reaction of red (iron complex) or red-violet is produced by dimethylamino-benzaldehyde. Furthermore, a layer containing potassium permanganate can be provided (for example, reacting with SO2 [sulfur dioxide], sulfur compounds with a specific odor = H2S, formaldehyde, or for example permethrin).

[0037] In another exemplary embodiment, the filter module has an energy generation unit configured to obtain energy by an air flow through the filter module and / or by electromagnetic waves, in particular for the operation of the analysis area. Energy can be obtained, for example, through a pressure difference on the filter module, such as by a propeller, a galloping harvester, a piezoelectric flag (piezoelectric element), and / or by receiving and rectifying high-frequency vibrations (such as from a WLAN router). This is used for the operation of the devices in the analysis area or for the system in the filter system. In this way, for example, an electrical connection between the filter system, the filter module, and / or the surrounding ventilation equipment is no longer necessary.

[0038] In another exemplary embodiment, the analysis region has a number of sample chambers that are selectively permeable to air for filtering air particles, in particular to enable temporally offset sampling. The sample chambers may be distributed or aggregated in a specific region of the filter body or inside the filter region. The sample chambers are arranged such that the velocity of the volumetric flow according to the present invention is between 0.1 m / s and 5.0 m / s and the pressure drop of the air flowing through the filter body is less than 450 Pascals. Further, the sample chambers are configured and arranged such that, under a pressure drop range of 10 Pa to 450 Pa through the filter module, the composition of the air flow in the sample chambers of the analysis region changes by less than 40% compared to the composition in the filter region, and the sample chambers in the analysis region are configured relative to the filter region such that more than 90% of the air in the sample chambers contacts the same air particles as the filter region.

[0039] At this time, the sample chambers can be selectively permeated, for example, by one or selected sample chambers being accessible to the air flow in a time-dependent manner. At this time, the sample chambers can have an opening mechanism, such as a controllable operating member, for selectively opening the sample chambers. In order to accurately guide the air flow to a specific sample chamber at a specific time, an air guiding system composed of, for example, an air pipe and a control valve can be utilized.

[0040] In another exemplary embodiment, the filter body has a non-woven fabric as a filter material, particularly in the filter region, and the non-woven fabric particularly has one integral layer or multiple layers. The filter body is particularly arranged in the filter module so as to be replaceable, and the non-woven fabric is particularly configured as a disposable filter. The non-woven fabric is made of fibers of limited length, endless fibers (filaments), or cut yarns, which are combined and joined into one non-woven fabric (fiber layer, fiber web). The chain of fibers provides an air-permeable material with narrow, small-hole-shaped air passages, thereby particularly realizing a good filtering effect for air particles.

[0041] Furthermore, it is preferable that the filter module prevents possible air resonance. This is because an exchangeable filter module (especially as a disposable filter) does not have to be precisely adapted to the housing of the filter system surrounding it. In a filter material consisting of regularly arranged filter media (such as woven, punched, etched, or perforated filters), resonance and associated negative effects can occur due to the effect of self-organization of the air flow (especially during startup and shutdown of the facility, or when there are variations in physical measurements, noise, re-detachment of already embedded harmful substances). In the solution according to the present invention, the use of non-woven layers has been shown to attenuate such vibration effects. Such attenuation occurs because the fibers are deposited irregularly and randomly. Such irregularities reduce the self-organization potential associated with vibration. Such attenuation can be enhanced under the use of multiple non-woven layers in the structure of the filter material, especially when they have at least slightly different non-woven materials or non-woven layers. Differences can be created through the manufacture of non-woven materials.

[0042] In another exemplary embodiment, the filter region and the analysis region can be arranged in parallel in the air flow, such that the filter module can be configured as part of a secondary filter facility and / or such that the filter module can be configured as part of a pocket filter.

[0043] In another exemplary embodiment, the inflow of air into the analysis region is controllable such that the flow difference and / or pressure difference of air in the filter region and the analysis region can be adjusted, and in particular, the pressure difference can be controlled. For example, based on the flow obstruction of the air flow, or when there is sediment in the filter region, for example, a flow difference and / or a pressure difference may occur between the filter region and the analysis region. This may lead to measurements in the analysis region that do not represent the entire air flow. Accordingly, the flow characteristics can be accurately adjusted individually between the analysis region and the filter region, for example, through an air guidance system or a flow generator, to accurately adjust the flow characteristics in both regions.

[0044] In another exemplary embodiment, the analysis region can be penetrated continuously or discontinuously. That is, for example, it can be selectively covered under discontinuous inflow into the analysis region, and the air flow can be allowed to flow in only at the measurement time point. As an alternative, for example, in order to realize long-term measurement, it can be constantly and continuously allowed to flow into the analysis region.

[0045] In another exemplary embodiment, under discontinuous operation, the analysis region can be activated with a temporal duty cycle ratio that is lower than 10:1, in particular lower than 100:1, relative to the filter region, and / or the active measurement time of the through-flow cycle of the filter body is shorter than 10 ms, in particular shorter than 50 ms, particularly preferably shorter than 1 ms, and the through-flow cycle is in particular adjustable. A duty cycle of 10:1 means, for example, that the analysis region is flowed through for one hour unit out of ten hour units during which the filter region is flowed through. In this way, discontinuous measurements are possible, in particular to save energy for the measurement system. For example, it may be sufficient to perform the measurement in the analysis region only during a very short time interval interrupted by long rest phases. The foreign matter load in the air flow, as a rule, occurs over a relatively long time. Therefore, it is possible to interpolate the temporal median value from the individual measured values without the need for continuous measurement. For example, measurement results can be obtained with a duty cycle lower than 1:10, in particular lower than 1:100. At this time, it is particularly beneficial if the measurement time is minimal, and in this way, for example, the measurement of the color conversion of the display in the analysis region can be confirmed with a measurement time shorter than 10 ms, in particular shorter than 50 ms, or shorter than 1 ms.

[0046] In another exemplary embodiment, the filter module has a link member that can be linked to a connection part of the filter system, which is mechanically and / or electrically linked to the analysis area. The link member is configured to provide, in particular, a detachable link between the analysis area and the connection part of the filter system. Furthermore, the link member is configured to automatically generate a link between the connection part of the filter system and the analysis area, in particular when the filter module is inserted into the operating position in the filter system. The link member is provided, in particular, on the exhaust side of the filter body. The link member serves, for example, as a flow link for an air flow that is collected in the analysis area and is to be transferred, for example, to a filter system or an external analysis area in an external laboratory. As an addition or alternative thereto, the link member serves to establish a signal engineering or electrical link between the analysis area and the device of the filter system. The link member is provided on the filter module, for example on the support frame of the filter module, such that it can be linked to a corresponding link member of the filter system when the filter module is in the operating position in the filter system. The link member may be, for example, an electrical connector. Furthermore, the link member may be an air connection tube or a flange-like structure that can be hermetically linked to a corresponding air connection tube of the filter system when the filter module is arranged in the operating position in the filter system.

[0047] In cases where a measuring unit or sensor is used for air data in the analysis area, the filter module disconnects the measured air from the air flow and then this measured air can be supplied by the system to the air sensor device on site. This has the advantage that the air sensor device does not have to be replaced every time a filter module is exchanged. At this time, the filter module may be manufactured such that the connection to the air sensor device is automatically linked and unlinked by a link member when the filter is exchanged. This can be embodied, for example, in a pocket filter as a filter module, by inserting the support frame and also inserting the measured air pipe by means of a corresponding link member. In particular, by arranging such a plug connection in the exhaust area of the filter system, the fouling of the plug connection can be reduced or prevented.

[0048] In another exemplary embodiment, the filter module has another filter body, in particular consisting of a pocket filter or a tube filter respectively, and at least one filter body consists only of an analysis area configured for the analysis of air entrained substances and air quality. For example, at least one filter body consists only of an analysis area having a current supply unit designed to provide a current supply, in particular during a predetermined service life of the filter module. For example, the filter module has filter modules arranged in parallel, or one behind the other, respectively, in particular having a plurality of pocket filters or tube filters. Instead of another filter body as a pocket filter or a tube filter, another filter body may consist only of an analysis area. In this way, since another filter body does not have to reserve an area for the filter area, a very large analysis area or a number of different analysis areas can be configured for another filter body. Furthermore, an energy supply device or an electrical supply unit, for example a battery having a high capacity, etc., which can supply energy to this over the service life of the filter module, may be arranged in the analysis area of another filter body. The battery over the service life enables a simple retrofitting to an existing filter system according to the solution according to the invention without additional electrical and / or installation technical measures.

[0049] In another exemplary embodiment, the filter body has, in particular in the filter area, at least two nonwoven layers and a filter diaphragm arranged between these nonwoven layers and arranged in a layered manner one above the other in a layer composite, and in particular, the filter diaphragm in the center of the layer composite has a larger surface area than both outer nonwoven layers.

[0050] In one exemplary embodiment, a first direction (e.g., the X direction) and a second direction (e.g., the Y direction) extending through a plane are defined, and the central filter diaphragm is configured in a waveform with waveform regions arranged in sequence along the first direction. The waveform regions extend irregularly and asymmetrically with respect to each other, particularly within the plane. The filter body is arranged such that air can flow over the filter body along the first direction or along the second direction. For example, the x direction is the air flow direction of the air, and the waveform regions extend along the second direction transversely to the first direction. The asymmetry of the waveform structure and waveform shape can be utilized for vibration attenuation. Alternatively, the filter body can also allow air to flow in along the Y direction and, accordingly, parallel to the extension of the waveform. Thereby, the waveform regions form, for example, a sharkskin-like riblet structure that causes a reduction in flow resistance. Depending on the situation of the inlet to the filter body (inlet cross-section, volumetric flow rate, depth of the filter material to be traversed), one or the other configuration can be particularly advantageous. The asymmetry of the waveform structure can be achieved by a self-organizing compression process in which the feed rate of the filter diaphragm is significantly higher than the feed rates of both covering nonwovens. When the three layers are thermally solidified at a predetermined point in time, the asymmetry of the waveform structure occurs. In addition to the advantages already described, such asymmetry acts to stabilize against flexure in the x-y plane.

[0051] In another exemplary embodiment, the filter body has a thickness of 2 mm to 10 mm, particularly 3 mm to 7 mm, in the filter region. Additionally or alternatively, the number of waveform regions is between 0.5 waves and 3 waves per centimeter. This enables a filter performance similar to that of a HEPA filter with a pressure drop within the range of a normal F7 filter (i.e., within the operating parameters of the solution according to the invention).

[0052] In another exemplary embodiment, the filter region is composed of a hydrophobic filter material. Further, the filter region may be composed of natural fibers. Further, the filter region can include a polyolefin, particularly polypropylene. In yet another example, the filter region includes cellulose, cotton, and / or hemp.

[0053] When the air flow to be filtered is loaded with a high aerosol load, well-known filters can tend to rapidly wet out. This can, on the one hand, statically increase the pressure drop across the filter, or dynamically, due to a very rapidly changing pressure situation, the subsequent volume flow control by VAV can be unduly demanded in terms of its control speed.

Means for Solving the Problem

[0054] The solution according to the present invention can solve this problem by appropriate material selection of the filter material. Hydrophobic materials (such as polyolefins substantially without polar groups, particularly polypropylene), or absorbent materials with a special (e.g., low) swelling tendency (such as natural fibers, particularly cellulose fibers, cotton, or hemp) can be used. In this way, the tendency for the filter openings to be blocked by microcrystalline or nanocrystalline water droplets is reduced. The mold-killing, virus-killing, and bactericidal properties of hemp are advantageous and have been shown to make it an ideal filter component.

[0055] In another exemplary embodiment, the analysis area has, in particular, an air-conducting device configured to form an air path to the air supply side and / or the exhaust side of the filter body, and the air-conducting device is configured to be attached to the filter body in a replaceable manner. In this way, the air path is guided through the analysis area and, optionally, through the filter area in a partial area. The air path guides air, for example, to a measuring device of the filter system, and the filter module can be replaced regardless of the measuring device. In particular, an intermediate material having filter characteristics or an active reagent can be provided in the air path. Together with the replacement of the filter module, an unloaded intermediate material or a new active reagent (which can interact with the components of the air flow) can be supplied.

[0056] In another exemplary embodiment, the filter module has a weighing device, in particular, set up to correct measurement errors due to the pressure of the air flowing through the system in order to weigh the filter deposit. By means of a corresponding additional mechanism, the correction of the measurement error due to the pressure of the air resistance can be achieved during the operation of the filter system. This enables the confirmation of a large amount of filter deposit even for the operating mode of the filter system under a low volume flow rate, which usually does not lead to the operation of the differential pressure monitoring of the filter in normal filter monitoring. In particular, the weighing device can have a bottom contact when the filter module is assembled in the housing of the filter system, and in this way, the force of the weight of the filter module can be introduced to the bottom surface. Thereby, the weight measurement of the filter module can be carried out.

[0057] In another exemplary embodiment, the filter module has a receiving device configured to receive a unique ID, which has information regarding the location where the filter module is used. The receiving device may be configured to read the unique ID from a QR code (registered trademark), bar code, OCR characters, or RFID tag. Further, the receiving device may be configured to receive the unique ID from NFC, Bluetooth (registered trademark), WLAN, a proprietary protocol, or a protocol of a building management system such as LON or EIB in particular. Based on the unique ID, the operation and / or configuration of the filter module can be adjusted.

[0058] In another particularly preferred embodiment, the unique ID has information regarding the installation location of the filter module in the filter system. Such an ID enables preselecting the operation parameters necessary for the specific operation from the preconfigured operation modes of the filter system or filter module, or calling up the stored data of the system configuration. Particularly when an encryption protocol is used, in this way, a new configuration can be avoided during filter replacement, and "plug and play" can be realized. The corresponding data can be transmitted during replacement from the filter system or filter module, or can be sent through the cloud. The transmission of the unique ID to the filter system can be performed by means of a mechanism using a QR code (registered trademark), bar code, OCR characters (and their subsequent machine-readable characters), RFID, NFC, Bluetooth (registered trademark), WLAN, a proprietary protocol, or a protocol of a building management system (such as LON, EIB, etc.). By means of such a mechanism, it is also possible to ship a filter system whose function is released only when a part of the unique ID is included within a determined scope of inclusion.

[0059] In another exemplary embodiment, the filter module has a transmitting device for transmitting data related to the filter body, and the transmitting device is set up to transmit data by means of RFID, NFC, Bluetooth®, WLAN, or a protocol of building management technology. Based on such data, a warning signal can be generated by the control unit and / or measures can be taken especially regarding the flow rate through the filter module.

[0060] The transmitting device may be, for example, an antenna or a conductor-based system that notifies the readiness of the ventilation equipment to receive data from the filter. Such data can include not only parameters regarding airborne substances in the air but also information and details of the filter module. For example, depending on the performance of the filter module used, the air volume passing through the filter module or the filter system can be adapted. Furthermore, when the service life or the deposition density of the filter module is exceeded, a signal can be emitted that can be interpreted as a maintenance signal or utilized as a control signal for reducing the air flow rate. One embodiment of the control device may be an RFID transponder (which also has filter data in encrypted form, for example). Furthermore, other communication mechanisms such as NFC, Bluetooth®, WLAN, etc. can also be utilized. For wired communication, in addition to proprietary protocols, the bus systems of building management systems (such as LON, EIB, etc.) can also be utilized. By means of such mechanisms, in particular, the durability of the reagents in the sampling unit or the sample chamber according to the present invention can be notified and corresponding countermeasures can be taken.

[0061] In another exemplary embodiment, the analysis region has a number of permeable regions that are selectively controllable such that the permeable regions are permeable at a pre-determined time point and for a pre-determined permeation time without interacting with each other, thereby forming a binary tree based on measurements at the pre-determined time points of the permeation of the individual permeable regions. Data on the parameters of the airborne substances measured in the permeable regions serve as indicators for the state of the air flow in one time region and for the state changes over the permeation time of the permeated regions. Based on this additional time dimension, various states and state changes of the airborne substances in a specific time region can be reflected in a data matrix or a binary tree.

[0062] Particularly when the filter module remains in the facility for a relatively long time, there is interest in being able to determine when a specific foreign object load occurred. This can be embodied, for example, by an embodiment of a filter module having a plurality of selectively permeable regions that are opened at time intervals to release each chamber and then re-sealed to block other chambers. As a special aspect resulting therefrom, it is also possible to embody the binary opening (1) or blocking (0) of the chambers. For example, performing a quantitative analysis and restructuring each binary tree according to the individual time points of the permeated regions results in a more precise resolution of the foreign object load or airborne accompaniments of the air. In particular, the energy for the selective closing and opening of the permeable regions can be obtained from the air flow.

[0063] In another exemplary embodiment, the analysis region is arranged more than 0.5 cm, particularly more than 1 cm, and even more particularly more than 2 cm or 8 cm away from the edge of the filter body or the support frame acting as the outer air flow separator, so that no edge effect due to air flow turbulence occurs in the analysis region.

[0064] In another exemplary embodiment, the filter body has a plurality of filter layers arranged one behind the other in the direction of air flow through the filter, particularly in the filter region. In particular, the first filter layer facing the air supply side filters more coarsely than at least one second filter layer following the first filter layer following in the flow direction. In this way, relatively large particles can first be filtered, while relatively small particles flow through the first layer and are only then filtered out by the finer layers. In this way, uniform accumulation is carried out along the air flow direction in the filter body.

[0065] In another exemplary embodiment of a filter system, the control unit has a visualization unit configured to visualize the analysis of air quality and air particles, particularly in a location-dependent manner at the installation location of the corresponding filter system. Furthermore, the control unit is configured to generate handling recommendations, particularly based on the analysis of air quality and air contaminants.

[0066] In a particularly preferred embodiment, a plurality of filter modules cooperate with each other to purify the air in a single building area. These filter modules can exchange data regarding air details and thus have corresponding additional equipment that can visualize air measurement data at at least one location or prepare actions depending thereon. At this time, not only the primary ventilation filters among these, but also all of the secondary ventilation filter systems among these form a network with each other and interact with each other. In particular, in this way, location-dependent air quality can be visualized, handling recommendations can be given, or measures can be initiated (for example, "The air in Conference Room 2 is not good" or "Since the air quality is low, please increase the blower level").

[0067] In another exemplary embodiment, the filter system has a ventilation control unit having, for example, a ventilator or other fluid generator. By means of the ventilation control unit, the flow rate of air passing through the filter body and the air pressure of the air on the air supply side of the filter body can be adjusted. The ventilation control unit is configured to adjust the pressure drop difference between the pressure drops on the air supply side and the exhaust side in the filter region and the analysis region individually each time, in particular by a mechanical and / or mechatronic ventilation control system, so that a constant volume flow through the filter region and the analysis region can be adjusted, in particular based on a posteriori adaptation based on measurement data.

[0068] The ventilation control system has, for example, a mechanical cross-section changer at the inlet of the analysis region, and the pressure drops in the filter region and the analysis region are taken into account so that the air flow rate in the analysis region is similar to and representative of the air flow rate in the filter region. The pressure drop in the analysis region can be adaptively adapted depending on the pressure drop in the filter region.

[0069] The control unit can take into account, for example, that the pressure drop in the analysis region, for example, is taken into account in the measurement data. Furthermore, analysis can be made to function over a wide range of pressure drops, which is, for example, by taking into account the pressure difference in the post-processing of the measurement data by the control unit (for example, by constantly recording the pressure difference and considering the data during evaluation).

[0070] In another exemplary embodiment of the filter system, the ventilation control unit can adjust the volume flow rate within the range of 0.1 to 5.0 m / s, in particular 0.3 m / s to 2.8 m / s, and / or the pressure drop through the filter body in at least one operating mode that is less than 250 Pa, in particular less than 150 Pa, in particular less than 60 Pa.

[0071] In another exemplary embodiment, the ventilation control unit controls the air flow such that, under a pressure drop range of 50 Pa to 450 Pa between the air supply side and the exhaust side of the filter body, the composition of the air flow in the analysis region changes by less than 25%, particularly less than 10%, preferably less than 4%, compared to the composition in the filter region.

[0072] In particular, the solution according to the invention is suitable for pocket filters of primary ventilation systems and for large-area filter modules of secondary ventilation systems. In both of these applications, the filter is used within a pressure drop range of 50 to 450 Pascals. Such a wide pressure drop range is a challenge for the present invention. This is because additional problems occur when such a filter system is to embody not only a filtering function but also an analysis function. Since the pressure drop in the analysis region is the result of a different strategy than that for the pressure drop in the filter region, different characteristic curves of the pressure drop for the volumetric flow usually occur (if no corresponding correction is intended). However, many measurement methods are based on a constant through-flow. This can be achieved by intentionally keeping the flow cross-section small over a sufficient length. Thereby, a Reynolds number Re exceeding 2000 is achieved under a relatively small pressure drop. krit is achieved.

Number

[0073] In that case, the relatively high pressure difference leads to a transition to a turbulent flow and an increasing resistance in the supply section that grows exponentially, which acts to stabilize the air flow rate.

[0074] In quantitative measurement methods, such stabilization as described above leads to incorrect measurements. In that case, under a large pressure drop, a relatively larger proportion of the total volumetric air flow passes through the filter region rather than the analysis region, because of which flow occurs. In contrast, it can be addressed by measuring the parallel pressure drop and making appropriate corrections to the measured values. As an alternative, the filter in the filter region can be designed such that it exhibits behavior similar to the volumetric flow restriction in the analysis region.

[0075] According to the present invention, this can be achieved in filter design by controlling the air flow or by designing the corresponding filter material.

[0076] In a pure filter, the through-flow difference over the service life of the filter does not play a major role. The relatively strongly through-flowed regions are first filled with the particles removed by the filter, which in turn increases the flow resistance in that region, so that the regions that were previously weakly through-flowed are preferentially through-flowed and the filter is also filled there. According to the present invention, the filter is designed to have a filter capacity in the filter region that is larger than originally necessary for the service life. Thereby, the increase in pressure drop during the service life of the filter is reduced (i.e., the filter is replaced due to reasons beyond the [service life] period, rather than due to a high delta P due to excessive accumulation).

[0077] The solution according to the present invention structurally ensures that the analysis region includes a composition representative of the air flow unit even under changing pressure situations. At this time, the analysis region is configured as a region of the cross-section to be through-flowed having a uniform laminar flow. In particular, in the edge zone (especially after the air flow guide has exceeded a certain roughness) or in the peripheral area of the edge or the air flow direction change part, a rapid transition from laminar to turbulent flow occurs, which leads to a non-uniformity of the solid proportion in the air due to the acting centrifugal force (as already described).

[0078] It should be noted that the embodiments described herein are only a limited selection among the possible embodiments of the present invention. For example, each constituent element of the individual embodiments can be combined with each other in an appropriate form, and thereby, for those skilled in the art, it can be considered that a large number of various embodiments are clearly disclosed by the embodiments explicitly shown herein. In particular, some embodiments of the present invention are described as apparatus claims, and other embodiments of the present invention are described as method claims. However, for those skilled in the art, when reading this application, it will be immediately apparent that, unless otherwise explicitly stated, in addition to the combination of constituent elements belonging to one type of the object of the present invention, any combination of constituent elements belonging to different types of the object of the present invention is also possible. Next, for further explanation of the present invention and for better understanding, examples will be described in detail with reference to the accompanying drawings. The drawings show the following:

Brief Description of the Drawings

[0079] Next, for further explanation of the present invention and for better understanding, examples will be described in detail with reference to the accompanying drawings. The drawings show the following:

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

DETAILED DESCRIPTION OF THE INVENTION

[0080] The same or similar components in different drawings are denoted by the same reference numerals. The figures in each drawing are schematic.

[0081] FIG. 1 shows a filter system 150 having a filter module 100 based on an exemplary embodiment. The filter system 150 has a control unit 130 and at least one filter module 100, and the at least one filter module 100 is configured to exchange analysis data necessary to assist in the analysis of air contaminants and / or air quality.

[0082] The filter module 100 is intended to filter the air 101 in at least one part of a building or the air 101 in the exhaust purification unit of a production process. The filter module 100 can be arranged in the filter system 150 so as to be replaceable. The filter module 100 has a filter body 110 configured to filter the air 101 when it passes through. The filter body 110 has a filter region 111 for filtering the passing air 101 from air-associated substances and an analysis region 112 configured to assist in the analysis of air-associated substances and / or air quality. The filter body 110 is configured such that, under a velocity of volumetric flow of 0.1 m / s to 5.0 m / s passing through the filter body 110, the pressure drop of the air flowing through the filter body 110 is less than 450 Pascals. The filter region 111 is configured such that, under a pressure drop range of 10 Pa to 450 Pa through the filter module 100, the composition of the air flow in the analysis region 112 changes by less than 40% compared to the composition in the filter region 111. The analysis region 112 is configured relative to the filter region 111 such that more than 90% of the air 101 contacts the same air-associated substances as the filter region 111 in the analysis region 112.

[0083] The filter system 150 has a housing in which the filter module 100 is arranged. Here, the filter module 100 according to the present invention is arranged in the filter system 150 so as to be replaceable. For example, corresponding guide rails can be provided, and along these guide rails, the filter module can be inserted in the insertion direction 107 to the operating position inside the filter system 150.

[0084] The filter system 150 has a ventilation control unit 140 having, for example, a ventilator or other fluid generator. By means of the ventilation control unit 140, the flow rate of the air 101 passing through the filter body and the air pressure of the air 101 at the air supply side 102 of the filter body 110 can be adjusted. The ventilation control unit 140 is configured to individually adjust each time the pressure drop difference between the pressure p1 on the air supply side 102 and the pressure p2 on the exhaust side 103 in the filter region 111 and the analysis region 112, in particular by means of a mechanical and / or mechatronics ventilation control system, whereby a constant volume flow through the filter region 111 and the analysis region 112 can be adjusted, in particular based on a subsequent adaptation based on measurement data.

[0085] The filter module 100 has a flat filter material fixed to a circumferential support frame. The filter module 100 can be configured as a pocket filter, with a number of pockets 114 of the filter material attached to the support frame, and the air flow is introduced into the pockets 114 to filter the incoming air 101.

[0086] The filter module 100 has, in particular, a filter region 111 that performs the function of filtering the air 101. Furthermore, the filter module 100 according to the invention has an analysis region 112 configured to assist in the analysis of the air 101.

[0087] The analysis region 112 has a sufficient spacing with respect to the support frame of the filter module 100 or with respect to the edge of the flow passage in which the filter module 100 is arranged in the filter system 150, in such a way as to avoid edge flow characteristics that cause, for example, different compositions of air particles in the air relative to the central filter region or different pressure drop ranges of the air 101.

[0088] The analysis area has a sensor member 113 for measuring at least one parameter of the air entrained substances and / or air quality of the air 101. Direct measurement of foreign objects or groups of foreign objects in the air flow can be provided by the sensor member 113 integrated in the analysis area 112. The sensor member 113 has, for example, a MEMS sensor. Furthermore, the sensor member 113 may in particular be configured such that the sensor member 113 can be utilized for Fourier transform infrared spectroscopy FTIR and / or near-infrared spectroscopy. The sensor member 113 can constitute, for example, a resistance sensor for measuring air entrained substances and / or air quality. At this time, in order to measure the presence of any foreign object in the air 101, an additional trigger substance can be utilized, for example.

[0089] The filter module 100 has a communication unit 122 for communicating data relating to air entrained substances and / or air quality to the control unit 130 of the filter system 150, in particular for the control of the filter module 100. The communication unit 122 is set up to transmit information relating to air entrained substances and / or air quality to the control unit 130 or also to transmit a control signal which can be created on the basis of the measured parameters to the control unit 130, thereby generating, for example, a control signal relating to a warning signal (alarm signal) or an air flow control signal.

[0090] Furthermore, the filter module 100 (in the case of embodiment by means of wired communication) has a link member 106 that can be linked to a connection part of the filter system 150, which is mechanically and / or electrically linked to the analysis area 112. The link member 106 is configured in particular to be able to provide a detachable link between the analysis area 112 and the connection part of the filter system 150. Furthermore, the link member 106 is configured in particular to be able to automatically generate a link between the connection part of the filter system 150 and the analysis area 112 when the filter module 100 is inserted into the operating position in the filter system 150. The link member 106 is provided on the exhaust side 103 of the filter body 110. The link member 106 is provided on the filter module 100, for example on the support frame of the filter module 100, in such a way that a link with a corresponding link member of the filter system 150 is possible when the filter module 100 is in the operating position in the filter system 150.

[0091] The filter module 100 further has a metering device 108 for metering the filter deposits and is in particular able to correct measurement value errors due to the pressure of the air 101 flowing through the system. The metering device 108 has a bottom contact when the filter module 100 is assembled in the housing of the filter system 150, and in this way the force of the weight of the filter module 100 can be introduced to the bottom surface. Thereby, the weight measurement of the filter module 100 can be carried out.

[0092] The filter module 100 has an optional receiving device 120 configured to receive a unique ID, which has information regarding the location where the filter module 100 is used. The receiving device 120 may be configured to read the unique ID from a QR code (registered trademark), barcode, OCR characters, or RFID tag. Further, the receiving device 120 may be configured to receive the unique ID from NFC, Bluetooth (registered trademark), WLAN, a proprietary protocol, or in particular, a protocol of a building management system such as LON or EIB. Based on the unique ID, the operation and / or configuration of the filter module 100 can be adjusted. For example, the unique ID has information regarding the installation location of the filter module 100 in the filter system 150. Such an ID enables preselecting the operation parameters necessary for the specific operation from the preconfigured operation modes of the filter system 150 or the filter module 100, or calling up the stored data of the system configuration.

[0093] Furthermore, the filter module 100 has an optional transmitting device 121 for transmitting data related to the filter body, and the transmitting device 121 is set up to transmit data by RFID, NFC, Bluetooth (registered trademark), WLAN, or a protocol of building management technology. Based on such data, a warning signal can be generated by the control unit 130, and / or measures can be taken particularly regarding the flow rate through the filter module 100.

[0094] The transmitting device 121 may be, for example, an antenna or a wire-based system that notifies the ventilation facility or the filter system 150, which receives data from the filter module 100, of its readiness. Such data can include not only parameters regarding airborne substances in the air 101, but also information and details of the filter module 100. For example, depending on the performance of the filter module 100 used, the air volume passing through the filter module 100 or the filter system 150 can be adapted. Furthermore, when the service life or the deposition density of the filter module 100 is exceeded, a signal can be issued that can be interpreted as a maintenance signal or utilized as a control signal for reducing the air flow rate.

[0095] The analysis area 112 is arranged more than 0.5 cm away from the edge of the filter body 110 or the support frame that acts as an outer air flow separator, so that no edge effect due to turbulent air flow occurs in the analysis area 112.

[0096] The control unit 130 has a visualization unit configured to visualize the air quality and the analysis of airborne particles or airborne substances, in particular in a location-dependent manner at the installation location of the corresponding filter system 150. Furthermore, the control unit 130 is configured in particular to generate handling recommendations based on the analysis of the air quality and airborne substances.

[0097] Figure 2 shows a schematic diagram of a filter material for a filter body 110 according to an exemplary embodiment. The filter body 110 particularly has, in a filter region 111, a plurality of filter layers arranged one behind the other in the flow direction of air 101 passing through the filter. In particular, the first filter layer facing the air supply side 102 filters coarser than at least one second filter layer following the first filter layer in the flow direction. In this way, relatively large particles can first be filtered, while relatively small particles pass through the first layer and then are only filtered out by the finer layers later.

[0098] The filter body 110 or one layer particularly has, in a filter region 110, a non-woven fabric as a filter material, and the non-woven fabric particularly has one integral layer or multiple layers.

[0099] The filter body 110 has at least two non-woven fabric layers 201, 203 and a filter diaphragm 202 arranged between these non-woven fabric layers and arranged in a layered manner one above the other in a third direction z in a layer composite. In particular, the central filter diaphragm 202 of the layer composite has a larger surface area than both outer non-woven fabric layers 201, 203.

[0100] The central filter diaphragm 202 has corrugated regions arranged one behind the other along a first direction x.

[0101] Figure 3 shows a schematic diagram of the wave shape of a filter material according to an exemplary embodiment.

[0102] The corrugated regions particularly extend irregularly and asymmetrically with respect to each other within a plane. The filter body 110 is arranged such that air can flow over the filter body 110 along a first direction x or along a second direction y. For example, the x direction is the air flow direction of air 101, and the corrugated regions extend transversely with respect to the first direction x along the second direction y. The waveform structure and the asymmetry of the waveform shape can be utilized for vibration attenuation.

[0103] FIG. 4 shows a schematic diagram of a filter module 100 having a plurality of analysis regions 112 according to an exemplary embodiment.

[0104] The analysis regions 112 may be continuously or discontinuously permeable. That is, for example, under discontinuous inflow into the analysis regions 112, these can be selectively covered and air can be allowed to flow in only at the measurement time. The analysis regions 112 have a collection volume for airborne substances. The analysis regions 112 can each constitute, for example, a pocket or a bag in which a collection volume is formed. Air particles or other airborne substances can be correspondingly collected therein, and for example, this can be analyzed later when the filter module 100 is removed. Further, according to an exemplary embodiment, a sensor member 113 (see FIG. 1) may be installed in the collection volume for analyzing the collected airborne substances.

[0105] The analysis regions 112 can each have an adhesion region for adhering and accumulating airborne substances. The adhesion part can be constituted, for example, through a defined configuration of the pore size of the filter material in the analysis region 112, or can be constituted by a specific adhesive-like substance to which airborne particles in the air particularly adhere. One of the analysis regions 112 can have a reactive region for the reaction and conversion of airborne substances and / or air components.

[0106] Figure 5 shows a schematic diagram including a selectively closable sample chamber 501 that is selectively permeable to air for filtering airborne substances or air particles, especially to enable temporally offset sample collection. The sample chamber 501 may be disposed dispersedly or concentratedly in a specific region of the filter body 110 or inside the filter region 111. The sample chamber 501 is arranged such that the velocity of the volumetric flow according to the present invention is 0.1 m / s to 5.0 m / s and the pressure drop of the air 101 flowing through the filter body is less than 450 Pascals. Further, the sample chamber 501 is configured and arranged such that under a pressure drop range of 10 Pa to 450 Pa through the filter module, the composition of the air flow in the sample chamber 501 of the analysis region 112 changes by less than 40% compared to the composition in the filter region 111, and the sample chamber 501 in the analysis region 112 is configured such that more than 90% of the air in the sample chamber contacts the same airborne substances or air particles as the filter region 111, relative to the filter region 111.

[0107] The sample extraction device 501 disposed in the analysis region 112 may be disposed in a replaceable manner. The sample extraction device 501 is configured with a collection volume part for airborne substances. The sample extraction device 501 is sealable, especially to partially, fully, and / or selectively seal the collection volume part. The sample extraction device 501 can be sealed, for example, after a certain time period during which airborne substances are collected in the collection volume part. Then the sample extraction device 501 can be taken out and the collected air particles or liquid can be analyzed in an external laboratory.

[0108] For example, the sample extraction device 501 can have a closing mechanism such as a closing member 502 (for example, a closable flap). The corresponding opening and closing of the sample extraction device 501 can be controlled, for example, by the control unit 130 of the filter system 150.

[0109] The sample chamber 501 can be selectively flowed through by the closing member 502, for example, due to one or selected sample chambers 501 becoming accessible to the air flow in a time-dependent manner. As an alternative, an air guiding system composed of an air pipe and a control valve can be utilized to accurately guide the air flow to a specific sample chamber 501 at a specific point in time.

[0110] In this way, a large number of flow-through analyzable regions 112 are formed by the sample chamber 501, and these analyzable regions can be selectively controlled such that the flow-through analyzable regions 112 are flow-throughable at predetermined points in time and for predetermined flow-through times without interacting with each other. Thereby, a binary tree can be formed based on the measurement of the flow-through of individual flow-through analyzable regions 112 at predetermined points in time. The data of the parameters of the air-borne substances measured in the flow-through analyzable regions 112 serve as indicators for the state of the air flow in one time domain and for the state changes over the flow-through time of the analyzable regions 112 being flowed through. In this way, based on the additional time dimension, various states and state changes of the air-borne substances in a specific time domain can be reflected in a data matrix or a binary tree.

[0111] FIG. 6 shows a schematic diagram of a filter system 150 having one filter module 100 and a plurality of filter bodies 110, 610 based on an exemplary embodiment. The filter bodies 110, 610 are each composed of, for example, a pocket-type filter or a tube-type filter, and at least one filter body 610 is composed only of analyzable regions 112 configured, for example, for the analysis of air-borne substances and air quality. For example, at least one filter body 610 is composed only of analyzable regions 112 having a current supply unit 611 designed to be able to provide a current supply, particularly during a predetermined service life of the filter module 100. The filter module 100 has, in the exemplary embodiment, filter bodies 110, 610 arranged in series and in sequence accordingly.

[0112] The energy generation unit 104 or the current generation unit 611 is configured to obtain, for example, the energy utilized for the operation of the analysis region 112 by an air flow 101 passing through the filter module 100 and / or by electromagnetic waves.

[0113] FIG. 7 shows a schematic view of a filter body 110 having an air guiding device 702 according to an exemplary embodiment. The air conducting device 702 has an air path to the air supply side 102 and / or the exhaust side 103 of the filter body 110, and the air conducting device 702 is configured in the filter body 110 to be particularly replaceable. In this way, the air path extends through the analysis region 112. That is, the air path guides the air 101, for example, to a measuring device of the filter system 150, and the filter module 100 can be replaced regardless of the measuring device. In particular, an intermediate material having filter characteristics or an acting reagent can be provided in the air path.

[0114] Furthermore, the analysis region 112 has an air guiding region 701 for air outflow coupling from the filter body 110. For example, the air guiding region 701 can accommodate one air proportion of the flowing air 101 and can be configured in a tapered and funnel-shaped manner to transfer it to a desired location outside the filter module 100. For example, this air proportion can be collected in a collecting container of the filter system 150 and prepared for subsequent analysis. The air conducting device 701 also guides the air to a removable sample chamber 501, where, for example, air accompanying substances can be collected.

[0115] It should be noted as a supplement that "comprising" does not exclude other members or steps, and the indefinite articles "eine" and "ein" do not exclude a plurality. It should be further noted that the constituent elements or steps described by citing one of the above embodiments can also be applied in combination with other constituent elements or steps of other embodiments described above. The reference signs in the claims should not be regarded as limiting. (Other possible items) (Item 1) In a filter module (100) for filtering air (101) of at least one part of a building or air (101) of an exhaust gas purification unit of a production process, The filter module (100) can be arranged in a filter system (150) so as to be replaceable, The filter module (100) has a filter body (110) configured to filter the air when the air (101) passes through, and the filter body (110) is, A filter region (111) for filtering the air (101) passing through from air accompanying substances, And an analysis region (112) configured to assist in the analysis of air accompanying substances and / or air quality, The filter body (110) is configured such that, under a volumetric flow velocity of 0.1 m / s to 5.0 m / s passing through the filter body (110), the pressure drop of the air flowing through the filter body (110) is less than 450 Pascals, The filter region (111) is configured such that, under a pressure drop range of 10 Pa to 450 Pa through the filter module (100), the composition of the air flow in the analysis region (112) changes by less than 40% compared to the composition in the filter region (111), The analysis region (112) is configured relative to the filter region (111) such that more than 90% of the air (101) contacts the same air accompanying substances as the filter region (111) in the analysis region (112), a filter module. (Item 2) The filter module (100) according to item 1, wherein the analysis region (112) has a sampling volume part for air accompanying substances. (Item 3) The analysis region (112) is particularly arranged to be replaceable and / or removable, and further has a sample extraction device in which the sampling volume part is formed, The sample extraction device is, in particular, the filter module (100) according to item 2, which is sealable in order to partially, entirely, and / or selectively seal the sampling volume part. (Item 4) The filter module (100) according to any one of items 1 to 3, wherein the analysis area (112) has an adhesion area for adhering and / or accumulating air accompanying substances. (Item 5) The filter module (100) according to any one of items 1 to 4, wherein the analysis area (112) has a reactive area for the reaction and conversion of air accompanying substances and / or air components. (Item 6) The filter module (100) according to any one of items 1 to 5, wherein the analysis area (112) has an air guiding area for coupling the air outflow force from the filter body (110). (Item 7) The filter module (100) according to any one of items 1 to 6, wherein the analysis area (112) has a sensor member (113) for measuring at least one parameter of air accompanying substances and / or air quality. (Item 8) The filter module (100) according to item 7, wherein the sensor member (113) has a MEMS sensor, and the sensor member (113) is configured to be usable for the sensor member (113) particularly for Fourier transform infrared spectroscopy FTIR and / or near-infrared spectroscopy. (Item 9) The sensor member (113) has a resistance sensor for measuring air accompanying substances and / or air quality, and / or The filter module (100) according to item 7 or 8, wherein the sensor member (113) has a microphone configured to detect the indoor noise level so that the number and intensity of people vocalizing indoors can be determined by measuring and evaluating the indoor noise level. (Item 10) A communication unit (122) for communicating data related to air accompanying substances and / or air quality, particularly for controlling the filter module (100), to a control unit (130) of the filter system (150), the filter module (100) according to any one of items 1 to 9. (Item 11) The filter module according to any one of items 1 to 10, wherein the filter body (110) has a plurality of analysis regions (112). (Item 12) The analysis region (112) is configured to indicate the presence of a substance class, The analysis region (112) is configured to filter and collect air particles from the air (101), and / or The analysis region (112) is configured to store a sample of air accompanying substances, The filter module (100) according to any one of items 1 to 11, wherein sorbitol and / or activated carbon are provided in the analysis region (112) particularly for storage. (Item 13) The filter module (100) according to any one of items 1 to 12, further comprising an energy generation unit (104) configured to obtain energy utilized particularly for operating the analysis region (112) by an air flow through the filter module (100) and / or by electromagnetic waves. (Item 14) The filter module (100) according to any one of items 1 to 13, wherein the analysis region (112) has a plurality of sample chambers that are selectively permeable with air (101) for filtering air particles, particularly to enable temporally offset sample collection. (Item 15) The filter body (110) has a non-woven fabric as a filter material, particularly in the filter region (111), The non-woven fabric particularly has one integral layer or a plurality of layers, The filter body (110) is arranged in the filter module (100) so as to be replaceable, in particular. The filter module (100) according to any one of items 1 to 14, wherein the non-woven fabric is configured as a disposable filter in particular. (Item 16) The filter region (111) and the analysis region (112) can be arranged in parallel in the air flow, and the filter module (100) can be configured as part of a secondary filter facility and / or as part of a pocket filter, the filter module (100) according to any one of items 1 to 15. (Item 17) The inflow of air (101) into the analysis region (112) is controllable so as to adjust the flow difference and / or pressure difference of the air (101) in the filter region (111) and the analysis region (112), in particular, so as to be controllable or controllable of the pressure difference, the filter module (100) according to any one of items 1 to 16. (Item 18) The analysis region (112) of the filter module (100) according to any one of items 1 to 17 can be flowed through continuously or discontinuously. (Item 19) Under discontinuous operation, the analysis region (112) can be activated at a duty cycle ratio lower than 10:1, in particular lower than 100:1, relative to the filter region (111), and / or The active measurement time of the through-flow cycle of the filter body (110) is shorter than 10 ms, in particular shorter than 50 ms, particularly preferably shorter than 1 ms, and can be adjusted in particular, the filter module (100) according to item 18. (Item 20) The filter module (100) further has a link member (106) that can be linked to the connection part of the filter system (150) that is mechanically and / or electrically linked to the analysis region (112). The link member (106) is configured to be capable of providing a removable link, in particular, between the analysis region (112) and the connection part of the filter system (150). The link member (106) is configured to be capable of automatically generating a link between the connection part of the filter system (150) and the analysis region (112) when the filter module (100) is inserted into the operating position in the filter system (150). The filter module (100) according to any one of items 1 to 19, wherein the link member (106) is provided particularly on the exhaust side (103) of the filter body (110). (Item 21) Further having at least one other filter body (110) particularly composed of a pocket-type filter or a tube-type filter. At least one filter body (610) is composed only of an analysis region (112) configured for the analysis of airborne substances and air quality. The filter module (100) according to any one of items 1 to 20, wherein at least one filter body (110) is composed only of an analysis region (112) having a current supply unit (611) designed to be capable of providing a current supply during a predetermined service life of the filter module (100). (Item 22) The filter body (110) particularly has, in the filter region (111), at least two non-woven fabric layers (201, 203) and a filter diaphragm (202) arranged between the non-woven fabric layers (201, 203) and arranged in a layered manner to form a layer composite. The filter module (100) according to any one of items 1 to 21, wherein the filter diaphragm (202) in the center of the layer composite has a larger surface area than the two outer non-woven fabric layers (201, 203). (Item 23) The first direction and the second direction extend through one plane. The central filter diaphragm (202) is configured in a waveform with the waveform regions arranged in a staggered manner along the first direction, The waveform regions extend irregularly and asymmetrically with respect to each other, particularly within the plane, The filter body (110) is arranged such that air (101) can flow over the filter body (110) along the first direction or along the second direction, the filter module (100) according to item 22. (Item 24) The filter body (110) has a thickness of 2 mm to 10 mm, particularly 3 mm to 7 mm, in the filter region (111), and / or The number of the waveform regions is between 0.5 waves and 3 waves per centimeter, the filter module (100) according to item 23. (Item 25) The filter region (111) is composed of a hydrophobic filter material, and / or The filter region (111) is composed of natural fibers, and / or The filter region (111) contains polyolefin, particularly polypropylene, and / or The filter region (111) contains cellulose, cotton, and / or hemp, the filter module (100) according to any one of items 1 to 24. (Item 26) The analysis region (112) has, in particular, an air conduction device configured to form an air path to the air supply side (102) and / or the exhaust side (103) of the filter body (110), The air conduction device is configured on the filter body (110) such that it can be replaced in particular, the filter module (100) according to any one of items 1 to 25. (Item 27) Further having a metering device (108) for metering filter deposits, in particular, capable of correcting a measurement error due to the pressure of the air (101) flowing through the system, the filter module (100) according to any one of items 1 to 26. (Item 28) further comprising a receiving device (120) configured to receive a unique ID, the unique ID having information regarding the location where the filter module (100) is used, the receiving device (120) being configured to read the unique ID from a QR code, bar code, OCR characters, or RFID tag, and / or, the receiving device (120) being configured to receive the unique ID from NFC, Bluetooth, WLAN, a proprietary protocol, or a protocol of a building management system such as LON or EIB in particular, The filter module (100) according to any one of items 1 to 27, wherein the operation and / or configuration of the filter module (100) can be adjusted based on the unique ID. (Item 29) further comprising a transmitting device (121) for transmitting data related to the filter body, the transmitting device (121) being set up to transmit data by RFID, NFC, Bluetooth, WLAN, or a protocol of building management technology, Based on the data, a warning signal can be generated by a control unit (130), and / or, in particular, measures regarding the flow rate through the filter module (100) can be taken. The filter module (100) according to any one of items 1 to 28. (Item 30) The analysis area (112) has a number of permeable areas, and these areas can be selectively controlled so that the permeable areas can be permeated independently of each other at a predetermined time point and for a predetermined permeation time, whereby a binary tree is formed based on the measurement of the permeation of each individual permeable area at a predetermined time point. The filter module (100) according to any one of items 1 to 29. (Item 31) The analysis area (112) is arranged more than 0.5 cm, particularly more than 1 cm, and even more particularly more than 2 cm away from the edge of the filter body (110) that acts as an outer air flow separator, for the filter module (100) according to any one of items 1 to 30. (Item 32) The filter body (110) particularly has, in the filter area (111), a plurality of filter layers arranged one behind the other when viewed in the flow direction of the air passing through the filter. In particular, the first filter layer facing the air supply side (102) filters coarser than at least one second filter layer following the first filter layer following in the flow direction, for the filter module (100) according to any one of items 1 to 31. (Item 33) The filter body (110) has a pocket filter, a cartridge filter, a tube filter, a candle filter, a compact filter, or a HEPA filter, for the filter module (100) according to any one of items 1 to 32. (Item 34) A control unit (130), The filter module (100) according to any one of items 1 to 33, In a filter system (150) having, At least one of the filter modules (100) is linked to the control unit (130) to exchange analysis data necessary for assisting in the analysis of air contaminants and / or air quality, for a filter system. (Item 35) The control unit (130) particularly has a visualization unit configured to visualize the analysis of air quality and air contaminants in a location-dependent manner at the installation location of the corresponding filter system (150), The control unit (130) is particularly configured to generate handling recommendations based on the analysis of air quality and air contaminants, for the filter system (150) according to item 34. (Item 36) further comprising a ventilation control unit (140), wherein the ventilation control unit (140) is capable of adjusting the flow rate of the air (101) passing through the filter body (110) and the air pressure of the air (101) on the air supply side (102) of the filter body (110), the ventilation control unit (140) is configured to individually adjust the pressure drop difference of the pressure drop between the air supply side (102) and the exhaust side (103) in the filter region (111) and the analysis region (112) each time, in particular by a mechanical and / or mechatronics ventilation control system, whereby a constant volume flow through the filter region (111) and the analysis region (112) can be adjusted, in particular based on a posteriori adaptation based on measurement data, the filter system (150) according to item 34 or 35. (Item 37) the ventilation control unit (140) is configured to adjust the flow rate of the volume flow within the range of 0.1 to 5.0 m / s, in particular 0.3 m / s to 2.8 m / s, and / or the pressure drop through the filter body (110) in at least one operating mode that is less than 250 Pa, in particular less than 150 Pa, in particular less than 60 Pa, the filter system (150) according to item 36. (Item 38) the ventilation control unit (140) controls the air flow such that, under a pressure drop range of 50 Pa to 450 Pa between the air supply side (102) and the exhaust side (103) of the filter body (110), the composition of the air flow in the analysis region (112) changes by less than 25%, in particular less than 10%, preferably less than 4%, compared to the composition in the filter region (111), the filter system (150) according to item 36 or 37. (Item 39) A method for filtering the air (101) of at least one part of a building or the air (101) of an exhaust purification unit of a production process by means of an exchangeable filter module (100) according to any one of items 1 to 33.

Description of the reference numerals

[0116] 100 Filter module 101 Air 102 Supply side 103 Exhaust side 104 Energy generation unit 106 Link member 107 Insertion direction 108 Measuring device 110, 610 Filter body 111 Filter area 112 Analysis area 113 Sensor member 114 Pocket 120 Receiver 121 Transmitter 122 Communication unit 130 Control unit 140 Ventilation control section 150 Filter system 201 Outer non-woven fabric layer 202 Filter diaphragm 203 Outer non-woven fabric layer 501 Sample chamber 502 Closing member 611 Current supply unit 701 Air guide area 702 Air conduction device x First direction y Second direction z Third direction p1 Pressure supply side p2 Pressure exhaust side

Claims

1. In a filter module for filtering air from at least one part of a building or air from an exhaust gas purification unit of a production process, the filter module can be arranged in a filter system so as to be replaceable, the filter module has a filter body configured to filter the air when the air passes through, and the filter body has a filter region for filtering the air passing through from air-associated substances, and an analysis region configured to assist in the analysis of air-associated substances and / or air quality, the filter body is configured such that, under a volumetric flow rate of 0.1 m / s to 5.0 m / s through the filter body, the pressure drop of the air flowing through the filter body is less than 450 Pascals, the filter region is configured such that, under a pressure drop range of 10 Pa to 450 Pa through the filter module, the composition of the air flow in the analysis region changes by less than 40% compared to the composition in the filter region, the analysis region is configured relative to the filter region such that air contacts more than 90% of the same air-associated substances as the filter region in the analysis region, a filter module.

2. The filter module according to claim 1, wherein the analysis region has a collection volume part for air-associated substances.

3. The filter module according to claim 2, further comprising a sample extraction device which is arranged in particular replaceably and / or removably in the analysis region and in which the collection volume part is formed, the sample extraction device is sealable in particular to partially, completely, and / or selectively block the collection volume part.

4. The filter module according to claim 1, wherein the analysis region has an adhesion region for adhering and / or accumulating air-associated substances.

5. The filter module according to claim 1, wherein the analysis region has a reactive region for the reaction and conversion of air-associated substances and / or air components.

6. The filter module according to claim 1, wherein the analysis region has an air guide region for the air outflow coupling from the filter body.

7. The filter module according to claim 1, wherein the analysis area has a sensor member for measuring at least one parameter of air-borne substances and / or air quality.

8. The filter module according to claim 7, wherein the sensor member has a MEMS sensor, and the sensor member is configured such that the sensor member can be utilized, in particular, for Fourier transform infrared spectroscopy FTIR and / or near-infrared spectroscopy.

9. The sensor member has a resistance sensor for measuring air-borne substances and / or air quality, and / or The filter module according to claim 7, wherein the sensor member has a microphone configured to detect the indoor noise level so that the number and intensity of people vocalizing in the room can be determined by measuring and evaluating the indoor noise level.

10. The filter module according to claim 1, further comprising a communication unit for communicating data related to air-borne substances and / or air quality to a control unit of the filter system, in particular for controlling the filter module.

11. The filter module according to claim 1, wherein the filter body has a plurality of analysis areas.

12. The analysis area is configured to indicate the presence of a substance class, The analysis area is configured to filter and collect air particles from the air, and / or The analysis area is configured to store a sample of air-borne substances, The filter module according to claim 1, wherein sorbitol and / or activated carbon are provided in the analysis area, in particular for storage.

13. The filter module according to claim 1, further comprising an energy generation unit configured to obtain energy utilized, in particular, for operating the analysis area by an air flow through the filter module and / or by an electromagnetic wave.

14. The filter module according to claim 1, wherein the analysis area has a plurality of sample chambers that can be selectively penetrated by air for filtering air particles, in particular to enable temporally offset sampling.

15. The filter body has a non-woven fabric as a filter material, in particular in the filter area, The nonwoven fabric particularly has one integral layer or multiple layers, The filter body is particularly arranged in the filter module so as to be replaceable, The filter module according to claim 1, wherein the nonwoven fabric is particularly configured as a disposable filter.

16. The filter module according to claim 1, wherein the filter area and the analysis area can be arranged in parallel in the air flow, the filter module can be configured as part of a secondary filter facility, and / or the filter module can be configured as part of a pocket-type filter.

17. The filter module according to claim 1, wherein the inflow of air into the analysis area is controllable so as to be able to adjust the flow difference and / or pressure difference of air in the filter area and the analysis area, and particularly so as to be able to control or regulate the pressure difference.

18. The filter module according to claim 1, wherein the analysis area can be flowed through continuously or discontinuously.

19. Under discontinuous operation, the analysis area can be actuated with a duty cycle ratio lower than 10:1, particularly lower than 100:1, relative to the filter area, and / or The active measurement time of the through-flow cycle of the filter body is shorter than 10 ms, particularly shorter than 50 ms, particularly preferably shorter than 1 ms, and is particularly adjustable. The filter module according to claim 18.

20. The filter module further has a link member that can be linked to the connection part of the filter system, which is mechanically and / or electrically linked to the analysis area, The link member is particularly configured to be able to provide a removable link between the analysis area and the connection part of the filter system, The link member is particularly configured to be able to automatically generate a link between the connection part of the filter system and the analysis area when the filter module is inserted into the operating position in the filter system, The link member is particularly provided on the exhaust side of the filter body. The filter module according to claim 1.

21. It further has at least one other filter body particularly composed of a pocket-type filter or a tube-type filter, At least one filter body is composed only of an analysis area configured for the analysis of airborne substances and air quality. In particular, at least one filter body is composed only of an analysis area having a current supply unit designed to be able to provide a current supply during a predetermined service life of the filter module, in particular. The filter module according to claim 1. **Claim 22** The filter body has, in particular in the filter area, at least two nonwoven layers and a filter diaphragm arranged between the nonwoven layers and arranged in a layered manner one above the other in a layer composite. In particular, the filter diaphragm in the center of the layer composite has a larger surface area than the two outer nonwoven layers. The filter module according to claim 1. **Claim 23** A first direction and a second direction extend through one plane. The central filter diaphragm is configured in a waveform with the waveform areas, such that the waveform areas are arranged one behind the other along the first direction. The waveform areas extend irregularly and asymmetrically with respect to each other, in particular inside the plane. The filter body is arranged such that air can flow over the filter body along the first direction or along the second direction. The filter module according to claim 22. **Claim 24** The filter body has a thickness of 2 mm to 10 mm, in particular 3 mm to 7 mm, in the filter area and / or The number of the waveform areas is between 0.5 waves and 3 waves per centimeter. The filter module according to claim 23. **Claim 25** The filter area is composed of a hydrophobic filter material and / or The filter area is composed of natural fibers and / or The filter area contains polyolefin, in particular polypropylene, and / or The filter area contains cellulose, cotton, and / or hemp. The filter module according to claim 1. **Claim 26** The analysis area has, in particular, an air-conducting device configured to form an air path to the air supply side and / or the exhaust side of the filter body. The air-conducting device is configured on the filter body to be exchangeable, in particular. The filter module according to claim 1. **Claim 27** The filter module according to claim 1, further comprising a weighing device for weighing filter deposits, and in particular, capable of correcting measurement errors caused by the pressure of air flowing through the filter system.

28. Further comprising a receiving device configured to receive a unique ID, The unique ID has information regarding the location where the filter module is used, The receiving device is configured to read the unique ID from a QR code, barcode, OCR characters, or RFID tag, and / or The receiving device is configured to receive the unique ID from NFC, Bluetooth, WLAN, a proprietary protocol, or in particular, a protocol of a building management system such as LON or EIB, Based on the unique ID, the operation and / or configuration of the filter module can be adjusted. The filter module according to claim 1.

29. Further comprising a transmitting device for transmitting data related to the filter body, The transmitting device is set up to transmit data by RFID, NFC, Bluetooth, WLAN, or a protocol of building management technology, Based on the data, a warning signal can be generated by a control unit, and / or in particular, measures regarding the flow rate through the filter module can be taken. The filter module according to claim 1.

30. The analysis area has a number of permeable areas, and these areas are selectively controllable so that the permeable areas can be permeated at a predetermined time point and for a predetermined permeation time without affecting each other, whereby a binary tree is formed based on the measurement of the permeation of each of the permeable areas at a predetermined time point. The filter module according to claim 1.

31. The analysis area is arranged more than 0.5 cm, in particular more than 1 cm, and further in particular more than 2 cm away from the edge of the filter body that acts as an outer air flow separator. The filter module according to claim 1.

32. The filter body has, in particular in the filter region, a plurality of filter layers arranged one behind the other when viewed in the air flow direction through the filter region. In particular, the first filter layer facing the air supply side filters coarser than at least one second filter layer following the first filter layer following in the flow direction. The filter module according to claim 1.

33. The filter body has a pocket filter, a cartridge filter, a tube filter, a candle filter, a compact filter, or a HEPA filter. The filter module according to claim 1.

34. A control unit, The filter module according to any one of claims 1 to 33, In a filter system having At least one of the filter modules is linked to the control unit to exchange analysis data necessary for assisting in the analysis of air contaminants and / or air quality. A filter system.

35. The control unit has a visualization unit configured to visualize the analysis of air quality and air contaminants, in particular in a location-dependent manner at the installation location of the corresponding filter system. The control unit is configured to generate handling recommendations based on the analysis of air quality and air contaminants, in particular. The filter system according to claim 34.

36. Further having a ventilation control unit, By the ventilation control unit, the flow rate of air through the filter body and the air pressure of air on the air supply side of the filter body can be adjusted. The ventilation control unit is configured to individually adjust the pressure drop difference between the air supply side and the exhaust side in the filter region and the analysis region each time, in particular by a mechanical and / or mechatronics ventilation control system, thereby passing a constant volume flow through the filter region and the analysis region. It can be adjusted, in particular based on a subsequent adaptation based on measurement data. The filter system according to claim 34.

37. The ventilation control unit is configured to adjust the velocity of the volumetric flow within a range of 0.1 to 5.0 m / s, particularly 0.3 m / s to 2.8 m / s, and / or the pressure drop across the filter body in at least one operating mode that is less than 250 Pa, particularly less than 150 Pa, particularly less than 60 Pa, for the filter system according to claim 36.

38. The ventilation control unit is configured to control the air flow such that the composition of the air flow in the analysis region changes by less than 25%, particularly less than 10%, preferably less than 4%, compared to the composition in the filter region, under a pressure drop range of 50 Pa to 450 Pa between the air supply side and the air exhaust side of the filter body, for the filter system according to claim 36.

39. A method for filtering air in at least one part of a building or air in an exhaust purification unit of a production process by means of an exchangeable filter module according to any one of claims 1 to 33.

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