Filter module

Abstract

The utility model relates to a filter module for separating particles from a contaminated gas stream, the module having a receiving device with an inlet side for the inflow of the gas stream to be cleaned and an outlet side for the outflow of the cleaned gas stream, the inlet side and the outlet side being arranged opposite to each other on the receiving device, at least one filter insert being received by the receiving device, the filter insert having at least one lateral wall formed by at least partially gas-permeable filter means, an open partial region being formed in or next to the filter means, so that the gas stream flowing from the inlet side to the outlet side can flow on the one hand through the filter means and on the other hand through the open partial region.

Description

Technical Field

[0001] This utility model relates to a filter module for separating particles from polluted airflow. Background Technology

[0002] Filter modules have a variety of uses. For example, they can be used in paint booths to absorb paint mist. Filter modules are used to clean the air drawn from the paint booth. Paint particles that are not attached to the object being painted can be separated by the filter module. Therefore, such filter modules can also be called separators or separator modules.

[0003] A filter module typically has an air inlet for the airflow to be cleaned. The air outlet is preferably located on the other side for the purified airflow to exit.

[0004] For example, several identical filter modules can be arranged adjacent to or stacked to form a continuous surface, which can be positioned below or to the side of the object to be sprayed. All inlet sides are positioned on one side of the continuous surface. Ideally, a vacuum should be created behind the filter module to generate an airflow from the inlet to the outlet through the filter module. The airflow guides the air to be cleaned through the filter module and cleans the air by adhering particles inside the filter module or separating particles on the filter module.

[0005] Paper-based filter modules are a known technology. The filter assembly contains at least two sets of facets arranged laterally to the direction of the incoming airflow, forming baffle walls. Each facet has an opening, which can decrease in size from the inlet side to the outlet side, and / or can be offset from each other. These facets form a chamber within a base. The airflow to be cleaned meanders through the different, closely spaced openings on the walls.

[0006] One possibility is that these facewalls can be connected by a horizontally arranged stabilizing wall. Multiple such cleaning structures can be arranged one after another within the cavity to form a filter module. The air to be cleaned passes alternately through the facewalls and stabilizing walls via openings in the facewalls and stabilizing walls, meandering through the filter module.

[0007] The drawback of this type of filter module is that the adhesion of particles within the module varies greatly due to the airflow splitting in different spatial directions, resulting in uneven distribution. This is caused by the meandering airflow direction; after entering the inlet side, the airflow undergoes approximately a 90° turn in every possible spatial direction. This sudden change in airflow direction, such as turning to the left, right, top, or bottom within the filter module, leads to abrupt and very strong deceleration. Consequently, the airflow to be cleaned first reaches the first chamber between the first and second walls, where most particles are separated. Only a few particles reach the chambers further back. This reduces the efficiency and lifespan of each filter module, as it must be replaced when only a very small number of particles accumulate in the rear areas.

[0008] Another drawback is that some flow areas are covered by an impermeable material, which deflects air even though particles may adhere to the surface of the baffle wall.

[0009] According to existing technology, the individual cleaning structures arranged one by one within the base can also be disassembled individually. This allows for the replacement of the cleaning structure closest to the air intake.

[0010] However, during operation in a paint booth, several identical filter modules are often adjacent or stacked to form a continuous surface, making it time-consuming to replace the cleaning structure on each filter module. Specifically, each individual cavity must be opened to replace the cleaning structure of each filter module. This is not possible if the filter modules are arranged adjacently or overlapping each other. Therefore, the continuous surface of the filter modules must first be disassembled to access each filter module. This is time-consuming. Therefore, in practice, it is almost impossible to replace a single cleaning element. Thus, experience suggests that a filter module should only be completely replaced when the first cleaning element is so dirty that airflow can no longer pass through it. Utility Model Content

[0011] Against this backdrop, the objective of this invention is to provide an improved filter module with a longer service life. In particular, the objective of this invention is to provide a filter module with better separation performance, thereby reducing the energy requirements for operation.

[0012] According to this invention, this task can be solved by a filter module with the features described below. Accordingly, the following is provided:

[0013] A filter module for separating particles in a polluted airflow, particularly colored particles, comprises a receiving device having an inlet side for the inflow of the airflow to be cleaned and an outlet side for the outflow of the clean airflow, the inlet side and the outlet side being arranged opposite to each other on the receiving device; at least one filter insert is installed in the receiving device; wherein the filter insert has at least one transverse wall formed by a filter device that is at least partially permeable, wherein an open partial area is formed in or next to the filter device, such that the airflow can flow through the filter device from the inlet side to the outlet side on the one hand, and through the open partial area on the other hand.

[0014] The basic concept of this utility model is that by eliminating the baffle wall, a durable and effective filter module can be formed.

[0015] The basic idea of ​​this invention is to prevent the airflow from suddenly slowing down or deflecting, and instead ensure that the airflow does not deflect between the inlet and outlet sides and / or specifically forms a laminar flow, so that particles can evenly adhere to all the transverse walls within the receiving device. This achieves an open airflow without baffle walls, where the airflow passes through the filter device on one hand and through the open partial area on the other. In particular, it is possible to form essentially completely permeable transverse walls, i.e., composed of at least partially permeable material (filter device) and openings (open partial areas).

[0016] Furthermore, this method allows for the formation of an open partial region with arbitrary geometry to accommodate different levels of filters. The airflow within the receiving element is also influenced by the open partial region. In particular, the filter device can influence the shape of the open partial region solely through its shape. The filter device can be cut into any shape to achieve different geometries. Therefore, the shape of the open partial region can be a recess within the filter device, or a recess adjacent to the filter device, especially a recess adjacent to the filter device. "Adjacent" specifically refers to forming the open partial region on the plane of the transverse wall through corresponding cuts, so that a complete cross-sectional plane in the receiving device is not crossed by the filter device. Therefore, the fabrication of the open partial region is both simple and economical.

[0017] The ratio of the area of ​​the open portion to the area of ​​the entire transverse wall can be 1:2 to 1:20, especially 1:2 to 1:10, and preferably 1:5 to 1:12. For example, the open portion can be half the area of ​​the transverse wall, or even 1 / 4 or 1 / 5 of the area of ​​the transverse wall.

[0018] A transverse wall is a device arranged laterally to the airflow within the receiving device. In particular, the transverse wall is completely permeable, allowing for adjustments to areas with varying permeability as needed. Therefore, the transverse wall is preferably composed of a filter medium, rather than a baffle wall.

[0019] Airflow can pass through the transverse wall at any point. The airflow velocity through the open section and through the filter device is very similar, thus creating laminar flow. The airflow is not slowed down by the transverse wall at any point, meaning that separation efficiency can be significantly improved compared to existing designs with transverse walls and multiple through-holes. In particular, separation performance can be improved by more than 100% compared to known filter modules. This is mainly because the airflow from the inlet to the outlet is open, and the airflow is not deflected by the baffle wall. As the airflow passes through the permeable filter device, particles are deposited on it. This continues until the filter device is saturated with deposited particles, and airflow can no longer pass through. However, the transverse wall does not "block" due to its open section, thus ensuring continuous airflow through the open section.

[0020] If several such transverse walls are arranged in series, more uniform separation can be achieved, especially for transverse walls located far apart on the outlet side, which greatly promotes particle separation. In particular, as the transverse walls reach saturation with particles one after another, the airflow can also reach the last transverse wall through the open areas of each wall, ensuring that even the transverse walls furthest from the outlet side reach saturation with particles. Therefore, compared to existing filter modules with baffles, the service life of this filter module can be extended by at least 100%.

[0021] An open air duct directs airflow to the outlet side without deflection, especially during extended operation of the filter module. This also means less energy is required to generate the airflow. Therefore, compared to existing filter modules, especially those with baffles, at least 30% energy savings can be achieved. Possibly, energy savings of 40% to 50% can be achieved compared to existing designs.

[0022] Filter inserts can be made of filaments or contain filaments. In particular, filter devices can contain natural fibers, such as hemp, jute, and / or bast materials. Furthermore, the filaments can also contain plastics. A key feature of filaments is their ability to be linked into an endless array of three-dimensional structures. This can be achieved using 3D printing processes. Other breathable materials can also be used.

[0023] Filter devices can be three-dimensional structures formed by special woven or finely woven structures. The thickness of the filter device can be from 10 mm to 200 mm or 50 mm to 200 mm, particularly from 10 mm to 50 mm or 10 mm to 20 mm. This allows for the formation of three-dimensional filter devices. Woven or filamentous structures can have interconnected fiber sections with air-permeable spaces between the fibers. Filter devices can have different fineness or coarseness.

[0024] In addition, this filter module has a single filter insert that does not need to be replaced throughout the entire service life of the filter module. Therefore, all components of the filter device can be used until they become unusable, i.e., until they are clogged by deposited particles.

[0025] Some advantageous embodiments and further developments can be seen from the further claims and the description with reference to the accompanying drawings.

[0026] According to an advantageous embodiment, at least one transverse wall may have at least two open partial regions, such that airflow from the inlet side to the outlet side can flow through the filter device on one hand, and through the open partial regions on the other. The open partial regions can be designed as recesses in the filter device. Similarly, at least one open partial region can be formed adjacent to the filter device, thereby adjusting the geometry of the filter device so that the open partial regions form a residual area on the cross-section of the filter module that the filter device does not cross.

[0027] In an advantageous embodiment, the open portions can be mirror images of each other within the filter device. Specifically, two open portions are mirror images of each other with respect to the central axis of the transverse wall. The open portions are particularly arranged in the front half of the transverse wall, so that the rear half of the transverse wall has no open portions. Thus, for example, identical transverse walls can be arranged one after the other to form a filter insert by rotating them 90°, 180°, or 270° relative to each other. This arrangement offers high efficiency, high separation, and a very good service life.

[0028] According to an advantageous embodiment, at least one open local area can be triangular, rectangular, or free-form. For example, an open local area can be formed in the corner (especially opposite corner) region of a transverse wall.

[0029] If the open portion is formed close to the filter device, the filter device can be partially circular, while the shape of the open portion can be outside the partial circle, up to a rectangle.

[0030] With further development, at least one transverse wall can be designed as a sandwich panel with a frame device to which the filter device is attached. For example, the filter device can be fixed to the surface of the frame device. In particular, the transverse wall has a circumferential frame device to which the filter device can be fixed. The circumferential frame primarily stabilizes the filter device and has little impact on the efficiency of the filtration mode because the frame has little or no effect on particle separation. This means that the manufacturing cost of such a sandwich panel is very low. The frame device and the filter device can be cut into any shape and then fixed together. For example, these devices can be connected to each other by force or material. In particular, fixing elements such as clips can be used. Furthermore, the devices can be glued together. In particular, complex folds or transverse walls can be eliminated.

[0031] The open area may be partially defined by frame devices and partially by filter devices. The open portion may be adjacent to the frame devices and / or arranged in the corner area of ​​the transverse wall.

[0032] The filter device may also have a frame portion that allows it to run along the frame device. The frame portion of the filter device can serve as a connection surface, allowing the filter device to be omnidirectionally connected to the frame device. In one embodiment, at least one open portion is formed as a recess or opening in the filter device.

[0033] According to a further embodiment, at least one transverse wall may have at least two openings, at least one of which is partially covered by a filter device, such that airflow from the inlet side to the outlet side can pass through the filter device through the opening and also through the partially open area of ​​the opening. The other opening may be completely covered by the filter device, so that airflow must pass through the filter device. The filter device for the opening can be designed as a single unit, so that the filter device completely covers one opening and only partially covers the other. Therefore, the transverse wall may have a frame device with a web. The remaining web between the two openings is relatively small relative to the width of the opening, particularly 1:10, or greater than 1:10, preferably 1:40 to 1:50, especially greater than 1:30, or greater than 1:40.

[0034] While the mesh structure between the openings can also be used to immobilize particles, it is best suited for stabilizing filter devices with specific geometries, such as semicircles or circles. However, implementations without such a mesh structure are also preferable. Therefore, the mesh structure does not form baffle walls, thus allowing airflow to be largely unaffected by the mesh, i.e., flowing through the filter device without the mesh's influence. The web and frame components can be integrally molded from paper material, making it easy to punch or cut openings.

[0035] According to a further embodiment, at least one transverse wall may have more than two openings, wherein at least one opening is completely covered by the filter device, and at least one open portion is covered by filter material, thereby retaining an open portion in at least one opening.

[0036] According to an advantageous embodiment, multiple transverse walls can be arranged parallel to each other in the receiving device. When the transverse walls are arranged one in front of the other, at least one open portion of one transverse wall is offset from the open portion of the adjacent transverse wall. For example, the open sub-region of the first transverse wall can be formed in the left sub-region, particularly the first half, while the open sub-region of the second transverse wall can be formed in the right sub-region, particularly the second half. In the third transverse wall, the open sub-region can be formed in the upper sub-region, particularly overlapping with the left and right sub-regions. In the fourth transverse wall, the open portion can be formed in the lower portion, particularly overlapping with the left and right portions. The fifth transverse wall can correspond to the first transverse wall, allowing for repeated arrangement as needed.

[0037] For example, identical transverse walls can be arranged one in front of the other and rotated 90° to distribute open areas around the filter module.

[0038] In other words, the transverse walls are best arranged one after the other to create open sections at different locations. These sections can be adjacent and / or overlapped. This allows the airflow to slow down in different ways at different locations. In particular, sections of airflow with lower purification levels can reach the transverse wall closer to the outlet, thus optimizing the efficiency of the filtration module. Therefore, all transverse walls contribute significantly to the purification of the airflow.

[0039] According to an advantageous embodiment, the filter insert can have at least three, and particularly three to twelve, transverse walls. For example, these transverse walls can all have the same open portion area, but these areas are offset from each other. The size of the open portion can also be reduced to achieve the required level of purification or efficiency of the filter module. This arrangement can be described as a progressive structure.

[0040] In one implementation, the transverse walls may be arranged at least partially at different distances from each other. Preferably, the transverse walls closer to the air inlet are more spaced apart than those closer to the air outlet. The opposite arrangement can also be used. The filter module can be adjusted according to the number of particles present, thereby preventing clogging.

[0041] In another implementation, the distance between the transverse walls can be the same. Different filtration intensities can be determined by the open portion area and the size and geometry of the filter device.

[0042] According to an advantageous embodiment, each of the adjacent transverse walls can have at least one open local area arranged at different locations on the transverse wall. These different locations can overlap when the transverse walls are stacked together. Furthermore, these different locations can be adjacent to each other when the transverse walls are stacked together.

[0043] According to an advantageous embodiment, the open portion area of ​​the transverse walls arranged one in front of the other, from the inlet side to the outlet side, can be reduced. This allows the filtration efficiency from the inlet side to the outlet side to be adjusted solely by the openings on the filter element, particularly the geometry of the filter element, without needing to adjust the geometry or similar shape of the openings on the transverse walls made of impermeable material. Specifically, the open portions of the transverse walls are rotated 180° relative to each other, resulting in a filter with optimized filtration performance, particularly in terms of separation performance, service life, and energy consumption.

[0044] According to one embodiment, at least one transverse wall can be laterally aligned with the connecting plane between the inlet and outlet sides. This allows the transverse wall to be laterally aligned with the airflow. Preferably, the direction of the transverse wall is orthogonal to the airflow.

[0045] According to a favorable implementation scheme, the transverse walls can be arranged parallel to each other. This means that all the transverse walls can be laterally aligned with the airflow, so that the airflow will not be significantly deflected in its flow direction due to the transverse walls.

[0046] According to a preferred embodiment, the transverse walls can be interconnected on at least one side by longitudinal connections to form a continuous filter insert. This creates a modular system in which the filter insert is inserted integrally into the receiving device. The longitudinal connectors can be rotatably attached to the transverse walls, allowing the filter inserts to be pushed together so that the transverse walls are parallel and in contact with each other for transport. For example, two longitudinal connectors can be arranged on opposite sides, with the transverse walls inserted therein. In particular, frame devices can be used to secure the longitudinal connectors.

[0047] According to another embodiment, the transverse wall may extend over the entire length between the inlet side and the outlet side, and / or at least one longitudinal wall may extend over the entire width of the receiving device, such that only one filter insert spans the interior of the receiving device.

[0048] According to one embodiment, the receiving device may have at least one opening on its inlet side, with the filter device and at least one open portion of at least one transverse wall closest to the inlet side spanning the opening. This allows the airflow to be cleaned to completely impact the filter device without contacting non-permeable components, such as transverse walls with several smaller openings. Compared to known filter modules with several smaller openings on their transverse walls, this open airflow can improve the filter module's lifespan and separation performance by at least 100%.

[0049] In an advantageous embodiment, the receiving device and / or filter insert may comprise recyclable material and / or the filter module may be designed as a paper filter module. The receiving device is preferably made of cardboard. Such a filter module can also easily handle attached particles, particularly through incineration. Furthermore, the manufacturing cost is low.

[0050] In an advantageous embodiment, the filter device can be made of filaments, nonwoven fabrics, and / or natural fibers. The filter device can contain woven fabrics, nonwoven fabrics, or similar materials that are also recyclable. The filter device can be a three-dimensional structure specifically formed by a woven or finely woven structure and can contain the aforementioned materials.

[0051] According to an advantageous embodiment, at least one sensor for measuring the velocity of the cleaned airflow and / or measuring the resistance value can be installed at the air outlet. Advantageously, this can be used to determine when the filter module needs to be replaced. For example, if the velocity of the cleaned airflow is below a threshold, the filter module can be considered severely contaminated, and almost no airflow can pass through.

[0052] With further development, a chamber can be arranged on the outlet side of the receiving device to house the filter device. This would create an ultrafine filtration stage, filtering out the smallest particles from the airflow.

[0053] According to an advantageous embodiment, the receiving device can be overlapped or reopenable, and at least one closing device is molded on the side surface of the receiving device. The closing device is preferably fully embedded in the sidewall of the receiving device so as not to prevent multiple filter modules from being stacked or arranged adjacently to form a continuous surface.

[0054] According to a further concept, a method for assembling filter modules can be provided. In this case, a two-dimensional structure with essentially no cavities can be formed before assembly by contacting the full surface of the transverse wall with at least one longitudinal connector. Through assembly, it can be transformed into a three-dimensional structure with spaced transverse walls without bending of the transverse wall or at least one longitudinal connector.

[0055] Advantageously, the receiving device can also be essentially a two-dimensional structure, constructed similarly to a cardboard box. This allows both devices—the receiving device and the filter device—to be transported in a space-saving manner. The filter module can also be assembled quickly without prior knowledge.

[0056] The above-described embodiments and further developments can be combined with each other as needed. Other possible embodiments, further developments, and implementations of this utility model include combinations of features of this utility model not explicitly mentioned above or described in the embodiments below. In particular, those skilled in the art will also add individual aspects as improvements or supplements to the respective basic forms of this utility model. Attached Figure Description

[0057] The present invention will now be explained in more detail with reference to the embodiments shown in the schematic diagrams. Wherein:

[0058] Figure 1(a) shows an embodiment of the transverse wall of the filter insert;

[0059] Figure 1(b) shows another embodiment of the filter insert transverse wall;

[0060] Figures 2(a) and (b) show another embodiment of the filter insert transverse wall;

[0061] Figures 3(a) and (b) show another embodiment of the filter insert transverse wall;

[0062] Figures 4(a) and (b) show another embodiment of the filter insert transverse wall;

[0063] Figure 5 shows an embodiment of the filter insert;

[0064] Figure 6 is a schematic diagram of the filter module;

[0065] Figure 7 is an isometric view of the filter module;

[0066] Figure 8 is Figure 7 The filter module shown is in a folded state (side view).

[0067] Figures 9(a) and (b) are top views of an embodiment of the filter module;

[0068] Figures 10(a) and (b) are top views of an embodiment of the filter module;

[0069] Figures 11(a) and (b) are further embodiments of the filter insert transverse wall;

[0070] Figure 12 shows an embodiment of the filter insert;

[0071] Figures 13(a) and (b) are further embodiments of the filter insert transverse wall;

[0072] Figures 14(a) and (b) are further embodiments of the filter insert transverse wall;

[0073] Figures 15(a) and (b) are further embodiments of the filter insert transverse wall;

[0074] Figures 16(a) and (b) are isometric views of the filter module and detailed views of the closing element;

[0075] Figures 17(a) and (b) show other embodiments of the filter insert transverse wall.

[0076] The accompanying drawings are intended to provide a further understanding of embodiments of the present invention. They illustrate embodiments of the present invention and, in conjunction with the description, explain the principles and concepts of the present invention. Other embodiments and numerous advantages of the present invention will become apparent from the accompanying drawings. Elements in the drawings are not necessarily labeled to scale.

[0077] In the accompanying drawings, unless otherwise specified, the same reference numerals are used for the same elements, features and parts that have the same function and effect. Detailed Implementation

[0078] Figures 1(a) to 4 show different embodiments of the transverse wall 7 of the filter insert 6. Each transverse wall 7 has an opening 8 on the frame device 11, and the opening 8 almost constitutes the entire surface of the transverse wall 7. Two open partial regions 10 are formed in the filter device 9, which are arranged symmetrically with respect to the horizontal or vertical axis in this embodiment. The openings can also be formed asymmetrically. Furthermore, as shown in Figure 13 or Figure 14, each transverse wall 7 may form only one open partial region 10.

[0079] For example, the open portion 10 is shown as a square, triangular, or rectangular opening in the filter device 9. Other geometries can also be used, such as those shown in Figure 13 or Figure 14.

[0080] In this embodiment, the filter device 9 is connected to the frame device 11. For this purpose, the filter device 9 can be selectively or continuously bonded to the frame device, for example. Alternatively, fastening devices, particularly clips, can be used. The filter device 9 may have a frame portion for this purpose, particularly in the open portion region 10, which can contact the frame device 11. The frame portion can run along the frame device 11. The frame portion of the filter device 9 can serve as the connection surface of the filter device, allowing the filter device to be omnidirectionally connected to the frame device. A design without the frame device 11 is also feasible, as shown in Figures 13 and 14.

[0081] For example, the designs shown in Figures 1(a) and 1(b) depict a transverse wall 7 with a large open portion 10, the size of which decreases sequentially in Figures 2 through 4. In this way, the transverse wall can form a coarse filter (such as...). Figure 2 ), medium filtration (as shown in Figure 3) and fine filtration (as shown in Figure 4).

[0082] The transverse wall of Figures 1(a) to 4 has a filter device 9, in which two open partial regions 10 are formed. As shown in Figures 11, 15 or 17, the open partial regions 10 may also be formed next to the filter device 9.

[0083] As shown in Figure 4, brackets 23 and grooves 24 can be arranged on the transverse edge portions of the transverse wall 7, particularly on the frame device 11 or the filter device 9. Therefore, the transverse walls 7 can be interconnected via longitudinal connectors 14, as shown in Figure 7. Thus, the longitudinal connectors 14 can be connected to opposite side regions of the transverse walls 7. For example, four longitudinal connectors 14 can be arranged so that the transverse walls have brackets 23 and grooves 24 as shown in Figure 4(b).

[0084] Figure 5 shows the arrangement of the transverse walls one after the other, thus forming a filter device. As shown, the filter features can be arranged from coarse to fine. Similarly, at least one version shown in Figures 1(a) and 1(b) can also be arranged in front of the left transverse wall 7. When this type of filter device is used in the filter module, the airflow initially flows through all the transverse walls 7 because these walls are made of filter material that is at least partially permeable to the airflow. Therefore, the airflow can flow across the entire surface of the transverse walls, and the filter assembly has no baffles. Thus, the entire cross-section of the transverse walls can also be used for particle separation. Particle separation increases the surface area of ​​the filter device, and at some point, the filter material becomes saturated; therefore, it is advantageous that baffle walls only form in a saturated state. In other words, the baffles are actually formed by the deposited particles. Even when the transverse walls are saturated, the open local area 10 allows airflow through the transverse walls, so that the transverse wall 7 arranged behind the transverse walls remains continuously exposed to the airflow, thus aiding in separation. In this way, the entire filter insert gradually becomes saturated. Therefore, compared to known filter modules that come with baffles from the outset, the filter module needs to be replaced much later. Consequently, the filter of this invention can absorb more particles.

[0085] In the design shown in Figure 5, the transverse walls are arranged at 90° to each other, so that the open areas 10 of adjacent transverse walls 7 are either adjacent to each other or partially overlap.

[0086] As shown in Figure 4(a) or Figure 4(b), the transverse wall shown in Figure 5 may also have a bracket 23 and a groove 24.

[0087] The arrangement of the transverse walls 7 from Figure 1(a) to Figure 4 can also be shown in Figure 12, in which the arrangement of the transverse walls is rotated 180° relative to each other.

[0088] Figure 6 shows a filter module 1 with a receiving device 2 and a filter insert 6 with a cover plate 29. An opening 13 is located on the inlet side 3, which, for example, may correspond to an opening 8 (not shown) in the transverse wall 7, and is closest to the inlet side 3. Opposite to the inlet side 3, the receiving device 2 has an outlet side 5 with an opening 28. The opening 28 preferably covers almost the entire side surface of the receiving device 2 to ensure that purified air 4b is discharged as quickly as possible.

[0089] Figure 7 shows an isometric view of the filter insert 6. To form a three-dimensional structure, the transverse walls 7 are arranged substantially perpendicular to each other. At one end of each transverse wall 7, the transverse walls 7 can be connected to each other via longitudinal connectors 14 (also called centering clips). For this purpose, each transverse wall 7 can have a bracket 23 and a groove 24, particularly on the frame device 11 or the filter device 9. The longitudinal connectors 14 are used to create the three-dimensional structure. For example, the longitudinal connectors 14 can have a groove 22 into which the operator can insert their fingers. This makes it easier to set up the longitudinal connectors 14. More advantageously, the longitudinal connectors 14 also have a fold 25 extending to the length of the longitudinal connectors 14. If the operator now inserts their fingers into the groove 22, the longitudinal connectors 14 will fold along the fold 25, making placement easier. The longitudinal connectors 14 are preferably slightly longer than the distance between the two brackets 23 so that they can be securely clamped between the two brackets 23.

[0090] Figure 8 shows a side view of the filter insert 6 in Figure 10 in its folded state. It can be seen that the transverse wall 7 is inclined relative to the longitudinal connector 14 to obtain the three-dimensional structure shown in Figure 7 from the two-dimensional structure shown in Figure 8. When the filter insert 6 is installed in a three-dimensional structure with rectangular or square cavities 19, the transverse wall 7 will not bend. Therefore, the filter insert 6 is very stable overall. Furthermore, the folded filter insert 6 is easy to transport. Depending on the design and construction of the transverse wall, the volume can be reduced by more than 30%, particularly by 30% to 80%.

[0091] Figure 9 shows top views of two other embodiments. The direction of airflow 4 is indicated by arrows. Each airflow 4 is laminar and does not meander with adjacent airflows, i.e., it is parallel or transverse to the transverse wall 7, so the airflow does not deflect to the left or right in the figure. Therefore, an open airflow can be achieved, allowing the airflow to pass completely through the breathable material inside the filter insert 6. In Figure 6(a), there is a filter chamber 15 on the outlet side 5 of the receiving device 2, in which a filter device, specifically a secondary filter, is installed. This means that the air to be purified 4a can undergo ultra-fine purification in the final step.

[0092] Figures 10(a) and (b) show top views of another embodiment. In this embodiment, the distances between the transverse walls 7 are different. In the region on the inlet side 3, the transverse walls 7 are preferably arranged with a larger spacing because most of the particles in the air to be cleaned adhere to the filter insert 6 in this region. In the region on the outlet side 5, the distances between the transverse walls 7 are closer. This allows for fine cleaning of the airflow. With this arrangement, the distribution of particles across the entire filter insert 6 can be specifically adjusted, thereby enabling the filter module 1 to be used effectively for a long period of time.

[0093] For example, each transverse wall in Figures 9 and 10 can be designed as 11 to 15 or 17 in Figures 1(a) to 4.

[0094] Figure 11 shows two further embodiments of how open partial regions 10 are formed in the openings 8. A mesh structure exists between the openings 8, which can be connected to the frame device 11, particularly as an integral connection. The mesh structure is relatively thin, and therefore only serves to stabilize the filter device 9, not to separate particles. Therefore, the open airflow is not affected by the mesh structure. The mesh structure may occupy a portion of the surface of the transverse wall 7, particularly in a ratio of 1:20 to 1:50, preferably 1:20 to 1:25 or 1:30 to 1:40. In Figure 11(a), open partial regions 10 are formed at all openings. Here, the filter device 9 is circular, so each opening 8 is partially covered by a partially circular filter device 9. Therefore, open airflow can pass through the open partial regions 10 at the four corners. In Figure 11(b), the upper opening 8 has no filter device 9, while the lower opening is covered by the filter device 9.

[0095] Figure 12 shows transverse walls 7 adjacent to each other and having open local areas 10, according to another embodiment shown in Figure 13. The open local areas 10 of each transverse wall 7 are located differently on the transverse wall 7, so in this embodiment, the open local areas 10 of the transverse walls 7 do not overlap when the filter insert 6 is assembled. In this way, the airflow to be cleaned can be purified as shown in Figure 5, thereby achieving high efficiency.

[0096] Different variations can also be combined, so the elements in Figures 1(a) and 1(b) can be arranged behind or in front of the elements in Figures 2, 3, 4, 11, 13, 14, or 15. Similarly, one or more transverse walls 7 can be arranged in the middle or at the end, where no open portion area 10 is provided, but the transverse wall 7 is completely covered by the filter device 9. This can particularly achieve a progressive structure.

[0097] For example, 8 to 12 transverse walls 7 can be arranged one after the other. Different numbers are also possible. The distance between the transverse walls 7 can decrease in the direction of the air outlet.

[0098] Figure 16 shows an embodiment of the filter module 1, with details of the closing device 18 shown in an isometric view. The closing device 18 is arranged on the upper side 20 of the receiving device 2. There are four devices on the upper side 20, which together form a cover plate 29. Each device has two closing devices 18. The other two elements of the cover plate 29 each have two slots 27. The slots 27 are offset from each other. Therefore, the closing elements 18 are also offset from each other in the same way.

[0099] As can be seen from the detailed view in Figure 16(b), the closing device 18 includes a tab 26 that engages with a slot 27 on another element of the cover plate 29. The tab 26 is inserted into the slot 27 from above and bends in the direction of the arrow. Therefore, the receiving device 2 has a flat upper side 20. The upper side 20 is designed similarly to a cardboard box, with two inner baffles and two outer baffles that together form a cover plate 29.

[0100] In this embodiment, the side surface of the receiving device 2 has four generally rectangular openings 13, forming an air inlet side 3. These openings can be closed with removable components before using the filter assembly 1 to prevent the filter device 6 from becoming contaminated. These removable components can be easily removed by hand through engaging holes or grooves. For this purpose, the shape of the openings is preferably marked with perforations. The openings on the air outlet side 5 can also be the shape shown in Figure 6, initially closed by a removable component.

[0101] Figure 17 shows another embodiment of the transverse wall 7, in which the filter device 9 is triangular or a twisted square. Therefore, the open portion 10 can be arranged next to the filter device 9. Preferably, a frame device 11 is provided, such that the open portion 10 is partially defined by the frame device 11 and partially by the filter device 9. Simultaneously, the filter device 9 can be connected to the frame device.

[0102] Although the present invention has been fully described above with reference to preferred embodiments, the present invention is not limited thereto, but can be modified in various ways.

[0103] For example, the open portion 10 can have different constructions. The shape can deviate from the shape shown. Similarly, the arrangement of the open portion 10 can also be different from that shown.

[0104] Attached illustrations

[0105] 1. Filter Module

[0106] 2. Receiving device

[0107] 3. Air inlet side

[0108] 4. Airflow

[0109] 5. Air outlet side

[0110] 6. Filter insert

[0111] 7 horizontal walls

[0112] 8. Horizontal wall opening

[0113] 9. Filter devices

[0114] 10. Open areas

[0115] 11 Frame Devices

[0116] 12 Internal

[0117] 13. Air inlet side opening

[0118] 14. Longitudinal connectors

[0119] 15 filter chambers

[0120] 16 Filter Materials

[0121] 17 Side surfaces

[0122] 18 Closure devices

[0123] 19 cavities

[0124] 20. Top of filter module

[0125] 21. Board-type components

[0126] 22 Grooves

[0127] 23 Brackets

[0128] 24 Grooves

[0129] 25 Folding Point

[0130] 26 convex plates

[0131] 28. Exit side opening

[0132] 29 Cover plate

Claims

1. A filter module (1) for separating particles in polluted air, having The receiving device (2) has an inlet side (3) for the flow of the airflow to be cleaned (4a) and an outlet side (5) for the flow of the clean airflow (4b). The inlet side (3) and the outlet side (5) are arranged opposite to each other on the receiving device (2). At least one filter insert (6) is installed in the receiving device (2); Its features are, The filter insert (6) has at least one transverse wall (7) formed by a filter device (9) that is at least partially permeable, wherein an open partial area (10) is formed in or next to the filter device (9) so that airflow (4) can flow through the filter device (9) from the inlet side (3) to the outlet side (5) on the one hand, and through the open partial area (10) on the other hand.

2. The filter module (1) according to claim 1, characterized in that, At least one transverse wall (7) has at least two open partial areas (10).

3. The filter module (1) according to claim 2, characterized in that, Open partial regions (10) that are mirror images of each other are formed in the filter device (9).

4. The filter module (1) according to claim 1, characterized in that, At least one open partial region (10) is triangular, rectangular or free-form.

5. The filter module (1) according to claim 1, characterized in that, in, At least one transverse wall (7) is designed as a sandwich panel with a frame device (11) and a filter device (9) is fixed to the frame device (11).

6. The filter module (1) according to claim 1, characterized in that, In the receiving device (2), a plurality of transverse walls (7) are arranged in parallel to each other. When the transverse walls (7) are arranged in parallel to each other, at least one open portion (10) of one transverse wall (7) is offset relative to the open portion (10) of the adjacent transverse wall (7).

7. The filter module (1) according to claim 6, characterized in that, The filter insert (6) has at least two transverse walls (7).

8. The filter module (1) according to claim 6, characterized in that, At least one open portion area (10) of each of the adjacent transverse walls (7) is arranged at different locations on the transverse wall (7).

9. The filter module (1) according to claim 6, characterized in that, From the air inlet side (3) to the air outlet side (5), the open portion (10) of the successively arranged transverse walls (7) becomes smaller and smaller.

10. The filter module (1) according to claim 1, characterized in that, At least one transverse wall (7) is laterally aligned with the connecting plane between the air inlet side (3) and the air outlet side (5).

11. The filter module (1) according to any one of claims 6 to 10, characterized in that, The horizontal walls (7) are arranged in parallel to each other.

12. The filter module (1) according to any one of claims 6 to 10, characterized in that, The transverse walls (7) are interconnected at least on one side edge by longitudinal connectors (14) to form a continuous filter insert (6).

13. The filter module (1) according to claim 1, characterized in that, At least one transverse wall (7) extends across the entire width of the receiving device (2), so that only one filter insert (6) spans the interior (12) of the receiving device (2).

14. The filter module (1) according to claim 1, characterized in that, in, The inlet side (3) of the receiving device (2) has at least one opening (13), wherein the filter device (9) and at least one open portion (10) of at least one transverse wall (7) closest to the inlet side (3) span the opening (13).

15. The filter module (1) according to claim 1, characterized in that, The receiving device (2) and / or the filter insert (6) contain recyclable materials, and / or the filter device is made of filaments, nonwoven fabric and / or natural fibers.

Images