DE102016001485B4 - Filter module and housing with a filter module arranged therein - Google Patents

Abstract

Filter module (1) with filter media arranged therein, in particular for filtering contaminated air into or out of paint shops, at least one filter module (1) being detachably held by a corresponding filter wall which is arranged in the exhaust air flow of the paint shop, characterized in that the at least a filter module (1) has a base body (3) made of webs (2) and made of a waterproof material, that the filter media (4) of the filter module (1) are designed as at least one pocket filter (5), the at least one pocket filter (5 ) is arranged within the base body (3) and is detachably held by it, and that the bottom (6) and/or top surface (7) of the base body (3) in the area of the inlet side (8) of the contaminated air is provided with one of the at least a protective layer (9) assigned to a bag filter (5) and made of a waterproof material, the protective layer (9) protruding over the surface of the base body (3).

Description

The present invention relates to a filter module, in particular a filter module for filtering contaminated air into or out of paint shops, wherein at least one filter module is detachably held by a corresponding filter wall which is arranged in the exhaust air flow of the paint shops.

Filter modules with the features of the preamble are known. Such filter modules are widely used in particular in the field of vehicle manufacture or vehicle repair and there preferably for filtering polluted air that occurs during painting work and the filling and grinding work carried out prior to the painting work.

The known filter modules have a rectangular or square box made of cardboard as the housing, which is provided with differently designed filter media on the inside, with a large number of boxes arranged one above the other and/or arranged next to each other then forming a filter wall, which is equipped with corresponding individual compartments for accommodating a provided with each filter box. Such a known filter wall is arranged on the exhaust air side of the paint shop, for example in the wall area or in the floor area and in particular below the paint shop, in such a way that the contaminated air to be transported out of the paint shop is sucked off through the filter modules held by the filter wall and is then reused as cleaned air or released into the atmosphere can be drained. In order to replace the filter modules loaded with contaminants, the extraction of the contaminated air from the paint shop is then interrupted, so that the filter module boxes loaded with contaminants can be disposed of.

However, the situation often arises in which the filter module to be replaced, which is loaded with contaminants, is so dirty that the box is partially or completely destroyed during replacement and the contaminants falling or dripping out of this box must also be removed, sometimes with great effort . This situation is often observed when replacing such conventional filter modules that are used for separating overspray, the term overspray describing the proportion of paint that does not get onto the part to be painted in the desired way during painting and thus via the exhaust air as contamination discharged from the paint shop. In many cases, these are water-based paint systems which, due to their relatively high water content, lead to very rapid swelling and destruction of the conventional filter module cardboard and, to an increased extent, cause the problems described above when replacing, transporting and/or disposing of the filter cardboard laden with impurities. Overall, therefore, the use and replacement as well as the disposal of the conventional filter modules is very problematic, time-consuming and therefore also expensive due to the difficulties described above.

Furthermore, when using the conventional filter modules, it can often be determined that in the area of the inlet side of the contaminated air, part of the cardboard box or the filter medium is stuck to the assigned area of the filter wall, for example due to deposited paint particles, so that this bond has to be loosened manually, which is laborious , before the provided inside the cardboard boxes preferably arranged in a wavy, loaded filter medium can be replaced together with the damaged cardboard box. This often causes the cardboard box to be destroyed or damaged, with the result that undesired further contamination of the filter wall and the paint shop connected to it occurs.

U.S. 2004/0 163 370 A1 discloses a filter media kit assembly having a filter media component and support members for releasably mounting filter media in a respective one of a plurality of rigid frames, thereby forming a grid assembly. A bag filter having a central opening and at least two pocket-like portions is releasably mounted in an opening of the respective frame by pressing an outer edge portion of the filter media against inner edges of the frame by an interference fit. A support rod is provided to facilitate placement of the bag filter on the frame.

U.S. 2005/0 178 268 A1 discloses a fluid handling device having a support frame and a plurality of filter frames attached thereto. Each of the filter frames has an outer frame member that releasably secures a filter. The filters are either planar filters, pocket filters or multi-pocket filters.

DE 21 23 310 A discloses a cartridge-type dry filter arrangement for interchangeable assembly into a treatment unit consisting of a number of cartridges in a ventilation system for cleaning dust and other foreign matter from the air. Each filter cartridge includes an inverted V-like filter bag, preferably tapered in the direction of airflow from the base of the cartridge, made of an air-permeable but non-contaminant-permeable filter material, and a frame supporting and supporting the filter bag. The scaffolding is made up of one to match the number of side walls a number of side or end elements, manufactured separately and stored as semi-finished products, each consisting of a number of cut loose wires connected by figure bending or welding and attached perpendicularly to one another and lying in the same plane, and one the base of the cassette forming loose frame or ring, which is made in one piece and is provided on the circumference with several tongues formed by incisions, which when assembling the filter cassette from the above parts by bending the ends of the tongues around parts of the said side or end elements that rest on the frame all the filter bag on all sides connect surrounding parts to a robust filter cartridge.

U.S. 3,606,740 A discloses an air filter having a microfiber filter media and a porous nonwoven cover on both sides of the filter media, the media and cover being pleated to form a plurality of pockets.

The present invention is based on the object of making available a filter module, in particular for filtering contaminated air in or out of painting systems, for arrangement in corresponding filter walls which are arranged in the exhaust air flow of the painting systems, which can also be used when there is a high load of impurities and/or or aqueous and/or solvent-based systems can still be exchanged, transported and disposed of properly and without any problems.

According to the invention, this object is achieved by a filter module having the characterizing features of patent claim 1 .

The filter module according to the invention with filter media arranged therein, which are used in particular for filtering contaminated air into or out of painting systems, and which is detachably held by a corresponding filter wall, which is arranged in the exhaust air flow of the painting system, provides that each filter module has a filter module formed from webs Body made of a waterproof material. The filter media of the filter module according to the invention are designed as at least one pocket filter, with the at least one pocket filter being arranged within the base body and being detachably held by it. The bottom and/or top surface of the base body is/are provided with a protective layer assigned to the at least one bag filter in the area of the entry side of the contaminated air, the protective layer protruding beyond the surface of the base body.

According to the invention, it is therefore proposed, in comparison to the prior art described above, to use a base body made of webs made of a waterproof material instead of the cardboard box, which in turn detachably holds the filter media designed as at least one pocket filter, with the at least one pocket filter being arranged inside the base body is. The bottom and/or top surface of the base body has/have in the area of the entry side of the contaminated air a protective layer made of a waterproof material assigned to the at least one pocket filter, the protective layer protruding over the surface of the base body.

In comparison to the known filter module described above, which has filter media arranged in a corrugated form in a cardboard box, the filter module according to the invention or the filter medium designed as a pocket filter can also be easily replaced if the filter media provided in the filter module according to the invention are contaminated with a significant amount of dirt, in particular with an amount of dirt adhering to water or solvents, since in the filter module according to the invention the base body made of waterproof webs provides the stability required for this, due to the fact that in the filter module according to the invention the bottom and/or top surface of the base body is in the area the entry side of the contaminated air and thus in an area in which an increased accumulation of filtered impurities occurs during use, with a protective layer assigned to the at least one pocket filter and made of a was water-resistant material that protrudes or protrudes beyond the surface of the base body, with the filter module according to the invention such adhesions with the areas of the filter wall that come into contact with the filter module, as are described above in the prior art, cannot or only to a completely subordinate extent, so that the dirt-laden filter module according to the invention or the at least one bag filter can be replaced without any problems and without great effort.

Since the filter module according to the invention has a base body made of a waterproof material, the filter module according to the invention also does not have the problems of replacing, transporting and disposing of the filter module, as they occur above with the prior art, which has a cardboard box as the base body. Thus, after separation from the filter module, the filter module according to the invention or the filter media contained therein can be used properly and without causing additional contamination easily exchanged, transported and disposed of.

Impurities within the meaning of the present application are, in particular, the grinding, painting and/or polishing particles that occur when grinding, painting or polishing workpieces, as well as mist and/or aerosols of these particles, in particular the overspray, such as those found in the manufacture of vehicles or arise during the repair of the same and get into the air and are accordingly referred to as polluted air. By cleaning this contaminated air through the filter module according to the invention, i.e. by removing the above-mentioned particles, mist or aerosols of these particles by means of the at least one pocket filter provided in the filter module according to the invention, filtered or cleaned air is produced which, depending on the degree of its contamination, either Hall air can be fed back in or released into the atmosphere.

Waterproof materials within the meaning of the present description are all materials that, when completely soaked with water, a solvent, such as is used in particular when painting or coating and thus occurs as an impurity, or a liquid containing water or a solvent, still retains at least 50% of its strength, in particular its tensile strength, based on the initial strength and in particular on its initial tensile strength in the dry state.

A particularly suitable further development of the filter module according to the invention described above proposes that all outer surfaces of the bag filter that do not come into direct contact with the polluted air and also the protective layer consist of a textile material. Suitable textile materials are in particular woven, knitted or warp-knitted fabrics, textile composites, such as preferably bonded fiber fleeces, which are made in particular of synthetic fibers and preferably of polypropylene, polyethylene and polyethylene terephthalate fibers and high-temperature-resistant or non-combustible synthetic fibers.

The outer surfaces of the bag filter are the last surfaces through which the already filtered or mostly filtered air flows and therefore does not come into direct contact with the contaminated air.

The terms downstream and upstream as used further in the present application refer to the flow direction of the polluted air or after this polluted air has passed through the bag filter, to the flow direction of the cleaned air.

Furthermore, the term “and/or” used in the present description covers both additively and alternatively the individual elements of an enumeration linked in this way, so that these elements are to be understood as being linked optionally with “and” or with “or”. Furthermore, the terms used in the singular naturally also include the plural and the terms used in the plural include the singular.

With regard to the design of the at least one pocket filter provided in the filter module according to the invention, it should be noted that the shape of the pocket filter depends on which impurities and in what concentration are to be separated from the air by the filter module according to the invention. This not only determines the shape of the bag filter but also the selection of the respective filter medium.

Pocket filters that are provided in the filter module according to the invention have proven to be particularly durable, in which the outer surfaces, which consist of the textile material, are sewn together to form the desired shape of the pocket filter. Surprisingly, it was found that by varying the thickness of the sewing thread and the sewing needle as well as the selected stitch and the stitch density, pocket filters can be created whose air permeability even in the area of the sewn areas is not or only slightly greater compared to the non-sewn areas, so that the inevitable occurrence when sewing Puncture points do not lead to unwanted leakage points in the outer surfaces of the bag filter. As an alternative or in addition to this, depending on the respective material of the pocket filter, it is possible to glue or weld the outer surfaces together.

A particularly stable design of the base body, on which the at least one pocket filter is held within the base body, provides that the bottom surface, the top surface and/or both surfaces are formed from metal bars arranged in a grid-like manner, in particular from noble metal bars, and that the bottom surface is formed with the top surface is connected via individual, preferably vertically arranged metal webs. In particular, the vertically arranged metal webs are positioned on the floor surface in such a way that they hold the respective bag filter in a position that is optimized with respect to the separation, so that the vertical metal webs prevent the bag filter from collapsing in an undesirable manner. Conditional Due to the fact that the filter module according to the invention has a base body which is formed from webs, the filter module according to the invention has a low weight, which makes manual replacement of the filter module considerably easier, even when it is heavily loaded with dirt.

In a further embodiment of the filter module according to the invention, the entry side of the floor and/or ceiling surface facing the contaminated air is curved in an arc shape. In particular, if the arcuate curvature has an angle of curvature between 92° and 105°, preferably an angle of curvature between 94° and 98°, such a filter module can be inserted into and removed from a rectangular housing without any problems, without unwanted canting or jamming occurring .

As already described above, the filter module according to the invention has at least one pocket filter inside the base body. However, between two and six pocket filters are preferably held by a base body and are also arranged therein, so that these two to six pocket filters, which in particular have a V-shaped or Ω-shaped cross section, reliably filter the polluted air.

Depending on the filtration performance required in each case, pocket filters are used which have a multi-layered structure across the thickness of its wall, base and/or ceiling surfaces.

The filter module according to the invention preferably has at least one pocket filter whose wall, floor and/or ceiling surfaces have a multi-layer structure and which has at least one paper or cardboard layer and at least one outer layer made of the textile material connected thereto. In order to prevent the paper or cardboard layers that initially come into contact with the contamination from collapsing, even if the at least one pocket filter is heavily loaded with filtered impurities, it has proven to be advantageous to combine this at least one paper or cardboard layer with the layer made of the textile material to sew up the existing layer, so that the at least one paper or cardboard layer is correspondingly securely fixed by the sewing thread.

As an alternative to the above-described multi-layer structure made of paper or cardboard, another embodiment provides for a multi-layer structure to be provided exclusively from textile layers and, in particular, fleece layers with different levels of air permeability.

Preferred embodiments of the filter module according to the invention provide that the pocket filter has at least one fleece layer, which forms the at least one layer made of the textile material.

Depending on the requirements placed on the bag filter in terms of the degree of separation of contamination, another embodiment provides that the layer made of the textile material comprises a multi-layered structure of several non-woven layers, in particular two to five non-woven layers. Each fleece layer preferably has a different density and thus also a different air permeability, whereby on the one hand the degree of separation of impurities can be varied and set to a desired value and on the other hand the back pressure caused by the fleece layers can be adjusted. In particular, this multi-layered structure is stabilized by sewing, gluing and/or welding in terms of their arrangement and/or alignment with one another.

In another embodiment of the filter module according to the invention, each side of the base body is provided with a further protective layer in the area of the inlet side of the contaminated air, which protrudes beyond the respective side surface of the base body and which is assigned to the side wall of the pocket filter adjoining it and is preferably formed in one piece with it . Preferably also the protective layer associated with the bottom and top surface is formed integrally therewith.

In a further, particularly advantageous embodiment, the base body has a further protective layer on the side and such a protective layer on its bottom and top surface that protrudes so far beyond the base body in the area of the inlet side of the contaminated air that it can be rotated through an angle of 180° without damage ° are to be releasably fixed by folding them down on the base body. Through this fixation, on the one hand, the corresponding outer area of the base body can be sealed to form a housing by clamping the folded-over section, so that accordingly no unfiltered air can be drawn off through this, and on the other hand, this folded-over area facilitates the removal of the bag filter or bag filter loaded with filtered dirt .the appropriately loaded bag filter from the base body.

To the protective layer described above or the further protective layer after folding over by one To fix an angle of about 180° on the base body, it makes sense to carry out this fixation in particular using a corresponding cord-like binding material or using Velcro elements (as fixing elements) after folding it over by 180°.

If, in this embodiment, the fixing elements are designed in such a way that, after they have been released, they can still be used to close the loaded bag filter with the protective layer folded back again and/or the additional protective layer after it has been removed, this further development of the filter module according to the invention allows particularly contamination-free removal , transport and disposal of the loaded filter medium.

Another embodiment, which allows the base body to be removed more easily, provides that a gripping element is/are assigned to the bottom and/or top surface. In particular, this handle element is designed as a tube, preferably as a hollow metal tube, which connects the bottom surface to the top surface in the region of the edges of the base body on both sides pointing towards the entry side. With a handle element designed in this way, the filter module according to the invention can be exchanged, transported and disposed of particularly easily and quickly, even if it has a relatively large construction, without requiring an unreasonable physical strain on the employee. The handle element arranged on both sides of the base body also facilitates the arrangement and positioning of a fresh, unloaded filter module.

A further, particularly suitable embodiment of the filter module according to the invention provides that the bottom surface and the top surface of the base body in the area of the inlet side of the contaminated air are provided with the protective layer and the two outward-facing side surfaces of the respective outer pocket filters are provided with the further protective layer, with both the protective layer and the further protective layer are configured as described above. Furthermore, in this configuration of the filter module according to the invention, the base body is designed to be elastic in such a way that the top surface can be deformed in the direction of the bottom surface and/or one side surface can be deformed in the direction of the other side surface. Such an elastic deformation of the base body means that the protective layer and the further protective layer that is preferably connected to it can be folded over by 180°, which on the one hand allows the pocket filter to be additionally fixed to the base body and on the other hand an extremely effective sealing of the outer area of the base body to a corresponding Case caused by pinching the folded portion, as already described above. With such an elastic design of the base body in the area of the inlet side for contaminated air, it can be arranged in a gas-tight manner in a corresponding housing in a particularly simple, quick and using a small amount of force and can also be removed from this housing again as soon as the filter media are loaded with filtered contamination are without the disadvantages occurring as they have been initially highlighted in the prior art in connection with the cardboard boxes.

In order to bring about the aforementioned elastic deformability of the base body, there is the possibility that the base body is made of a permanently elastic material, in particular a permanently elastic web material made of plastic, with this plastic of course being solvent-resistant and/or water-resistant.

A particularly suitable embodiment of the filter module according to the invention provides a base body in which at least one web of the bottom surface and the top surface and/or the two side surfaces assigned to the inlet side for contaminated air is designed as a spring element. If the bottom surface and the top surface or only the two side surfaces have this web, then such a base body can be elastically deformed in the area of the inlet side for contaminated air either over its height or over its width and correspondingly easily arranged and removed in a housing assigned to the base body . This arrangement and removal of the filter module is further improved if the bottom surface, the top surface and the two side surfaces have correspondingly elastically deformable webs.

In the simplest case, this elastic deformation of the webs is ensured by forming them from a relatively thin material, in particular from a metal wire and preferably with a diameter of between 1 mm and 4 mm, the metal wire in particular being a stainless steel wire, with variation its thickness, the spring force of the spring element designed in this way can be changed.

Another configuration of the embodiment described above provides that the spring element is designed as a bending spring and preferably only extends over a section of the at least one deformable web.

Preferably, the spiral spring described above is designed as a circular segment-like, U-shaped, Ω-shaped or V-shaped spiral spring, in particular in the bottom surface and circular segment-like and/or U-shaped torsion springs are provided on the ceiling surface, which extend over a section of the corresponding web in the region of the inlet side for contaminated air. The advantage of the spiral springs formed in this way can be seen in the fact that on the one hand they ensure the necessary permanent elasticity and on the other hand they only require a small amount of space.

A further modification of the above-described embodiment of the filter module according to the invention provides that the base body of the filter module has only a single, first web in the area of the inlet side for contaminated air, which is provided with the two circular segment-like or two U-shaped spiral springs described above. and that, in addition, a second, straight, horizontal web forms the bottom surface and the top surface of the base body, with this second, horizontal web being positioned approximately in the middle of the base body. The base body is stabilized by this second, straight, horizontal web in each case, without the elasticity and thus also the deformability of the base body being negatively influenced in the area of the entry side for contaminated air. A further advantage of these second webs can be seen in the fact that, depending on their position relative to the position of the respective first web, the width elasticity and the width deformability of the base body can be adjusted.

If the filter module according to the invention is also to have height elasticity and height deformability of the base body, a particularly suitable embodiment provides that the bottom surface is connected to the top surface in the area of the inlet side for contaminated air via at least two vertical webs, the webs each having one Have section which is designed in particular as a V-shaped or Ω-shaped spiral spring. This spiral spring extends in the direction of flow of the air to be filtered from the inlet side for the contaminated air in the direction of the outlet side for the cleaned air, with preferably two such webs each detachably holding a bag filter from its outer side that does not come into contact with the contaminated air, as is explained in more detail below using two embodiments with a V-shaped and an Ω-shaped spiral spring in connection with the drawing.

In particular, the filter module according to the invention has two substantially vertical webs per bag filter with an Ω-shaped or V-shaped section, each bag filter being detachably held by the webs on its outer sides that do not come into contact with the contaminated air.

The present invention also relates to a housing with a filter module arranged therein, as described in detail above.

The housing according to the invention is designed as a rectangular box element which is provided with a closable front opening for supplying contaminated air and a closable rear opening arranged downstream of the respective filter module for discharging cleaned air.

In the closed state of the openings, this embodiment of the housing according to the invention serves to transport the unloaded or loaded filter module, so that this configuration is used in particular when extremely dirty filter modules outside the partition wall have to be exchanged, transported and disposed of in a room specially prepared for this purpose .

The housing according to the invention has all the advantages analogously or identically as have been extensively described above for the filter module according to the invention. In particular, the housing according to the invention can be used to quickly and easily erect partition walls that can be designed individually and are therefore adapted to the respective requirement.

Advantageous developments of the filter module according to the invention and the housing according to the invention are specified in the dependent claims.

• 1 eine schematische, perspektivische Darstellung einer ersten Ausführungsform des Filtermoduls, mit einem Grundkörper, jedoch ohne Filtermedium;
• 2 2 wie 1, jedoch mit Filtermedium, das aus drei Taschenfiltern ausgebildet ist;
• 3 einen Horizontalschnitt der 2, etwa 5 cm oberhalb der Bodenfläche;
• 4 ein Gehäuse zur Aufnahme des in den 1 bis 3 gezeigten Filtermoduls;
• 5 eine schematische, perspektivische Darstellung einer zweiten Ausführungsform des Filtermoduls, mit einem Grundkörper, jedoch ohne Filtermedium;
• 6 wie 5, jedoch mit Filtermedium, das aus vier Taschenfiltern ausgebildet ist;
• 7 einen Horizontalschnitt der 6, etwa 5 cm oberhalb der Bodenfläche;
• 8 eine perspektivische Ansicht einer Vorrichtung zur Aufnahme von Filtermodulen, wobei jedes Filtermodul so ausgestaltet ist, wie es in den 5 bis 7 abgebildet ist;
• 9 eine schematische, perspektivische Darstellung einer dritten Ausführungsform des Filtermoduls, mit einem Grundkörper, jedoch ohne Filtermedium;
• 10 wie 9, jedoch mit Filtermedium, das aus drei Taschenfiltern ausgebildet ist;
• 11 einen Horizontalschnitt der 10, etwa 15 cm unterhalb der Deckenfläche;
• 12 eine schematische, perspektivische Darstellung einer vierten Ausführungsform des Filtermoduls, mit einem Grundkörper, jedoch ohne Filtermedium;
• 13 wie 12, jedoch mit Filtermedium, das aus drei Taschenfiltern ausgebildet ist; und
• 14 einen Horizontalschnitt der 13, etwa 15 cm unterhalb der Deckenfläche.

The invention is explained in more detail below on the basis of various embodiments in conjunction with the drawing. Show it:

• 1 a schematic perspective view of a first embodiment of the filter module, with a base body, but without filter medium;
• 2 2 how 1 , but with filter media formed from three bag filters;
• 3 a horizontal section of the 2 , about 5 cm above ground level;
• 4 a housing for receiving the in the 1 until 3 shown filter module;
• 5 a schematic perspective view of a second embodiment of the filter module, with a base body, but without filter medium;
• 6 how 5 , but with filter media formed of four pocket filters;
• 7 a horizontal section of the 6 , about 5 cm above ground level;
• 8th a perspective view of a device for receiving filter modules, each filter module being configured as shown in FIGS 5 until 7 is shown;
• 9 a schematic perspective view of a third embodiment of the filter module, with a base body, but without filter medium;
• 10 how 9 , but with filter media formed from three bag filters;
• 11 a horizontal section of the 10 , about 15 cm below the ceiling surface;
• 12 a schematic perspective view of a fourth embodiment of the filter module, with a base body, but without filter medium;
• 13 how 12 , but with filter media formed from three bag filters; and
• 14 a horizontal section of the 13 , about 15 cm below the ceiling surface.

In the drawing, the same parts are given the same reference numbers.

The in the 1 until 3 schematically illustrated first embodiment of the overall with 1 ( 2 ) designated filter module has a base body 3, like this in 1 is shown. This base body 3 consists of a web-like bottom surface 6 and a spaced-apart ceiling surface 7, with both surfaces being designed as a grid. The bottom surface 6 is held at a distance from the top surface 7 by means of webs 2 . On the entry side 8 ( 3 ) of the contaminated air, the base body 3 has two tubular handle elements 18, so that when replacing, transporting and disposing of the base body 3 with the pocket filter 5 ( 2 and 3 ) the filter module 1 can be handled safely. The top surface, the bottom surface and the webs are preferably made of a round stainless steel material.

Like the 2 and 3 can be seen, the points in the 1 until 3 shown first embodiment of the filter module three pocket filters 5, which have an approximately V-shaped cross section. The opening of each pocket filter faces the inlet side 8 for contaminated air. The pocket filters 5 are each held at the ends, on the inflow side and on the sides by correspondingly positioned webs 2, preferably made of round stainless steel, with the wall surfaces 10 of the pocket filters 5 having an inner paper layer 14 and an outer fleece layer 15 sewn to it in the embodiment shown.

The bottom surface 11 and the top surface 12 of the pocket filter 5 consist of a fleece layer, which in turn is sewn to the outer fleece layer 15 of the wall surfaces 10. The detachable attachment of the pocket filter 5 to the webs 2 ensures that even with an extremely high load of filtered dirt, the bag filter 5 remain in their fixed position. A further protective layer 17 is assigned to the respective outer wall surface 10 of the left and right pocket filter 5, which in 2 shown embodiment is folded by 180 °. Likewise, the bottom surface 11 of all three pocket filters 5 is provided with a protective layer 9 formed in one piece with the bottom surfaces, and this can also be folded over by 180°. The further protective layer 17 as well as the protective layer 9 are held in the folded-over state by a locking device (not shown), for example a cord, in the position as shown in FIG 2 is shown. Will that now be in 2 illustrated filter module 1 in a corresponding housing 19, as is the case, for example, in 4 is shown, used, the folded protective layers 9 and 17 form an additional seal which prevents the contaminated air to be filtered from flowing past the side of the filter module in an undesired manner.

In 4 two housings 19 are shown by way of example, as well as an advanced housing, which is drawn in dashed lines and is identical to the housing on the left, with each housing accommodating the filter module 1 described above. All housings are designed identically. In order to create a filter wall that satisfies the respective requirement from these housings 19, a number of housings 19 corresponding to the number of filter modules 1 are connected to form the filter wall. Each housing or all housings together is assigned a supply area for contaminated air on the inlet side and a discharge area for cleaned air, with the supply area being arranged separately from the discharge area, so that contaminated air cannot mix with cleaned air. A blower (not shown) for conveying the contaminated air through the filter module 1 arranged in the housing 19 is assigned to the supply area and/or the discharge area.

Each housing 19 is adapted to the size of the base body 3 of the filter module 1 to be used and has a front opening 20 and a rear opening 21 as well as two closed side surfaces 21a, a closed top surface 23 and a closed bottom surface 24. All housing 19 consist of corre suitably dimensioned metal sheets, preferably stainless steel sheets.

The in the 5 until 7 schematically shown second embodiment of the overall with 1 ( 6 ) designated filter module has a base body 3, like this in 5 is shown. This base body 3 consists of a web-like bottom surface 6 and a spaced-apart ceiling surface 7, with both surfaces being designed as a grid. The bottom surface 6 is held at a distance from the top surface 7 by means of webs 2 . On the entry side 8 ( 7 ) of the contaminated air, the base body 3 has three tubular handle elements 18, so that when replacing, transporting and disposing of the base body 3 with the pocket filter 5 ( 6 and 7 ) the filter module 1 can be handled safely. The top surface and the bottom surface are preferably made of a round stainless steel material.

Like the 5 and 6 can be seen, the points in the 5 until 7 The second embodiment shown has four bag filters which have an approximately V-shaped cross section. The opening of each pocket filter faces the inlet side 8 for contaminated air. The pocket filters 5 are each held at the ends, on the inflow side and on the sides by correspondingly positioned webs 2, preferably made of round stainless steel, with the wall surfaces 10 of the pocket filters 5 having an inner paper layer 14 and an outer fleece layer 15 sewn to it in the embodiment shown.

The bottom surface 11 and the top surface 12 of the bag filter consists of a fleece layer which is in turn sewn to the outer fleece layer 15 of the wall surfaces 10 . The detachable fixing of the pocket filters 5 to the webs 2 ensures that the pocket filters 5 remain in their fixed position even when there is an extremely high load of dirt which has been filtered off. A further protective layer 17 is assigned to the respective outer wall surface 10 of the left and right pocket filter, which in 6 shown embodiment is folded by 180 °. Likewise, the bottom surface 11 of all four pocket filters 5 is provided with a protective layer 9 designed in one piece with the bottom surfaces, this also being folded over by 180°. The further protective layer 17 as well as the protective layer 9 are held in the folded-over state by a locking device (not shown), for example a cord, in the position as shown in FIG 6 is shown. Will that now be in 6 The filter module 1 shown in the figure is placed in a corresponding housing 29, which is shown pulled out of the filter wall for better understanding, as is the case, for example, in 8th is shown, used, the folded protective layers 9 and 17 form an additional seal which prevents the contaminated air to be filtered from flowing past the side of the filter module in an undesired manner.

In 8th a filter wall 30 is shown as an example, which is designed as a cylinder 20 and has four rows of six housings 29 each over the circumference in the embodiment shown there. For better representation, this is in 8th shown housing 29 removed from the cylindrical filter wall 30 and shown separately.

All housings 29 are designed identically. In order to create a cylindrical filter wall 30 that satisfies the respective requirements from these housings 29, a number of housings corresponding to the number of filter modules are connected to form the cylindrical filter wall 30. All housings 29 have an associated supply area for contaminated air on the inlet side and a discharge area for cleaned air, with the supply area comprising the outer housing 31, which comprises the four closed wall elements and a closed bottom element, and the inner cylinder 32 the discharge area for cleaned air form. The inner cylinder 32 is connected to an aspirator. The ceiling area (not shown) of the outer housing 31 forms the supply area for contaminated air and is designed, for example, as a full-surface ceiling grid, which at the same time forms the floor area of a paint shop arranged above it. The discharge area is thus separated from the feed area.

Each housing 29 is adapted to the size of the base body 3 of the filter module 1 to be used in each case and has a front opening 20 and a rear opening 21 and two closed side surfaces 21a, a closed top surface and a closed bottom surface. All housings 29 consist of appropriately dimensioned metal sheets, preferably stainless steel sheets.

More details about the in 8th The cylindrical filter wall shown is in German patent application 10 2015 001 821.3 filed by the same applicant on February 16, 2015 and the patent application filed at the same time as the present application DE 10 2016 001 486 A1 described, with 10 2015 001 821.3 being the priority application for both applications. Therefore, the disclosure content of this prior application establishing priority and the patent application filed at the same time DE 10 2016 001 486 A1 Subject of the present application.

The in the 9 until 11 shown third embodiment of the overall with 1 ( 10 ) shown filter module has a base body 3, like this in 9 is shown. This base body 3 consists of a bottom surface 6 and a top surface 7, the bottom surface 6 having a first web 26 and a second web 27 in the area of the entry side 8 for contaminated air. Both the web 26 of the base surface 6 and the web 28 of the top surface 7, which is identical to the web 26, are curved in an arc shape, with the arcuate curvature of the webs 26 and 28 having an angle of curvature between 92° and 105°, preferably an angle of curvature between 94° and 98°.

At a distance from the first webs 26 and 28 of the bottom surface 6 and the top surface 7 of the base body 3 are downstream of the inlet opening 8 ( 11 ) Two straight second horizontal webs 27 and 27a are arranged for contaminated air, so that the top surface 7 and the bottom surface 6 of the base body 3 are designed identically. A horizontal third web 36 running in a straight line is also provided on the back of the base body 3 .

The respective first webs 26 and 28 of the bottom surface 6 and the top surface 7 have a section which consists of two spring elements which are designed as U-shaped torsion springs 37 and 38 . These bending springs are also of identical design and are provided at the same 10 points in the webs 26 and 28 .

The outer side frame of the base body 3, which includes the webs 39 and 33, is produced from two identically shaped parts which are connected together, in particular welded, together at the height of the rectilinear webs 27 and 27a.

Between the base body 3 produced in this way, two webs 34 are arranged per pocket filter 5, so that accordingly in the case of the 9 until 11 shown third embodiment of the base body 3, the three pocket filters 5 by attachment to their respective outer walls, for example by appropriate clips, by Velcro or by sewing, holders, six identically shaped and spaced webs 34 are present. In the third embodiment ( 9 until 11 ) each have a section which is designed as a V-shaped spiral spring 35 . Likewise, each web 34 is connected and preferably welded to the two first webs 26 and 28 in the area of the top surface 7 and in the area of the bottom surface 6, with the two webs 34 arranged on the outside at the same time forming the front left and right edge of the side surfaces of the base body provided on the inflow side 3 train.

Like the 10 and 11 can be seen, the points in the 9 until 11 shown third embodiment of the filter module 1 three pocket filters 5, which have an approximately V-shaped cross section. The opening of each pocket filter 5 faces the inlet side 8 for contaminated air ( 11 ). The bag filters 5 are each supported on the inflow side and side by the webs 34, with old bag filter 5 in the 10 and 11 embodiment shown have an inner paper layer 14 (only partially shown) and an outer fleece layer 15 sewn thereto.

The bottom surface 11 and the top surface 12 of the bag filter 5 consist of a fleece layer which is in turn sewn to the outer fleece layer 15 of the wall surfaces 10 . The detachable fixing of the pocket filters 5 to the webs 34 ensures that the pocket filters 5 remain in their fixed position even with an extremely high load of dirt that has been filtered off. A further protective layer 17 is assigned to the respective outer wall surface 10 of the left and right pocket filter 5, which in 10 shown embodiment is folded by 180 °. Likewise, the bottom surface 11 of all three pocket filters 5 is provided with a protective layer 9 formed in one piece with the bottom surfaces, this also being folded over by 180°. The further protective layer 17 as well as the protective layer 9 are held in the folded-over state by a locking device (not shown), for example a cord, in the position as shown in FIG 2 is shown. Will that now be in 10 illustrated filter module 1 in a corresponding housing 19, as is the case, for example, in 4 is shown, used, the folded protective layers 9 and 17 form an additional seal which prevents the contaminated air to be filtered from flowing past the side of the filter module in an undesired manner.

Due to the fact that the base body 3 has the torsion springs 37 and 38 and the V-shaped torsion springs 35, the base body is elastically deformable in both its height and its width in the area of the entry side 8 for contaminated air, so that the two are connected to one another Protective layers 9 and 17 can be put over the entry area like a collar, as is shown in 10 is shown. This elastic deformation in height and width of the base body 3 also facilitates the arrangement and removal of the filter module 1 in and out of the in 4 housing 19 shown and described above, with the protective layers 9 and 17 simultaneously acting as an additional seal, so that no polluted air can flow around the head and foot side and the side of the filter module. This is also particularly effective ver prevents contamination and in particular paint residues from causing the filter module to stick to the adjacent walls of the housing.

around the in 9 To produce the base body shown, two identically shaped base body parts (lower and upper base body part) are first created by bending a corresponding stainless steel wire with a thickness between 1.5 mm and 3 mm, with each base body part comprising the webs 26 or 28 and 39 or 33.

The lower part of the base body is welded to the upper part of the base body, which was previously rotated through 180°, together with the web 36 and is additionally reinforced by the lower web 27 and the upper web 27a. Thereafter, six identical webs 34 are bent to form the V-shaped spiral spring 35 and at the same distance into the raw construction of the base body with the lower web 26 and the upper web 28 to form the base body 3 ( 9 ) welded.

The in the 12 until 14 The fourth embodiment of the filter module shown corresponds with the exception of the design of the spiral spring 35, which is V-shaped 35 in the third embodiment and Ω-shaped 40 in the fourth embodiment, and the spiral springs 37 and 38, which are U-shaped in the third embodiment and are Ω-shaped in the fourth embodiment, the third embodiment, so that the explanations given above for the third embodiment also apply to the fourth embodiment.

By varying the length of the webs 36, 27 and 27a, the basic shape of the base body can be adapted to the shape and size of the respective housing, so that such a filter module can also be used in a filter wall, such as the filter wall 30 in conjunction with the 8th is described.

Claims (26)

Filter module (1) with filter media arranged therein, in particular for filtering contaminated air into or out of paint shops, at least one filter module (1) being detachably held by a corresponding filter wall which is arranged in the exhaust air flow of the paint shop, characterized in that the at least a filter module (1) has a base body (3) made of webs (2) and made of a waterproof material, that the filter media (4) of the filter module (1) are designed as at least one pocket filter (5), the at least one pocket filter (5 ) is arranged within the base body (3) and is detachably held by it, and that the bottom (6) and/or top surface (7) of the base body (3) in the area of the inlet side (8) of the contaminated air is provided with one of the at least a protective layer (9) assigned to a bag filter (5) and made of a waterproof material, the protective layer (9) protruding over the surface of the base body (3). Filter module (1) after claim 1 , characterized in that all outer surfaces (10 to 12) of the pocket filter (5) that do not come into direct contact with polluted air and the protective layer (9) consist of a textile material. Filter module (1) after claim 1 or 2 , characterized in that the outer surfaces (10 to 12) of each pocket filter (5) are sewn together. Filter module (1) according to one of the preceding claims, characterized in that the bottom (6) and/or the top surface (7) is/are formed from metal webs (2) arranged in a grid-like manner and that the bottom surface (6) is connected to the top surface (7) is connected via individual, preferably vertically arranged, metal webs (2). Filter module (1) according to one of the preceding claims, characterized in that the entry side (8) of the bottom (6) and/or top surface (7) facing the contaminated air is curved in an arc shape. Filter module (1) after claim 5 , characterized in that the arcuate curvature has an angle of curvature between 92° and 105°, preferably an angle of curvature between 94° and 98°. Filter module (1) according to one of the preceding claims, characterized in that between two and six pocket filters (5) are arranged inside the base body (3). Filter module (1) according to one of the preceding claims, characterized in that each pocket filter (5) has a V-shaped or Ω-shaped cross section. Filter module (1) according to one of the preceding claims, characterized in that each pocket filter (5) has a multi-layer structure viewed over the thickness of its wall (10), its bottom (11) and/or its top surfaces (12). Filter module (1) according to one of the preceding claims, characterized in that the multi-layer structure of the pocket filter (5) has at least one paper or cardboard layer (14) and at least one layer consisting of the textile material connected thereto. Filter module (1) after claim 10 , characterized in that the at least one layer of the textile material is designed as a fleece layer (15). Filter module (1) after claim 10 or 11 , characterized in that the multi-layer structure comprises a plurality of fleece layers (15), in particular two to five fleece layers (15). Filter module (1) after claim 12 , characterized in that each fleece layer (15) has a different density. Filter module (1) according to one of the preceding claims, characterized in that each side surface (16) of the base body (3) in the area of the inlet side (8) of the contaminated air is provided with a further protective layer (17) which extends over the respective side surface (16) of the base body (3) protrudes and which is assigned to the wall surface (10) of the bag filter (5) adjoining it. Filter module (1) after Claim 14 , characterized in that the protective layer (9) and the further protective layer (17) are formed in one piece with the bottom (11) and top surface (12) and the wall surfaces (10) of the respective pocket filter (5). Filter module (1) according to one of the preceding claims, characterized in that the protruding protective layer (9) and the further protective layer (17) can be releasably fixed to the base body (3) after being folded over through an angle of 180°. Filter module (1) according to one of the preceding claims, characterized in that the bottom (6) and/or top surface (7) of the base body (3) is/are assigned a gripping element (18). Filter module (1) after Claim 17 , characterized in that the handle element (18) is designed as a tube, in particular as a metal tube, which connects the bottom surface (6) to the top surface (7) in the region of the edges of the base body (3 ) connects. Filter module (1) according to one of the preceding claims, characterized in that the bottom surface (6) and the top surface (7) of the base body (3) in the area of the inlet side (8) of the contaminated air with the protective layer (9) and each outer side surface (10) of the respective outer bag filter (5) are provided with the further protective layer (17) and that the base body (3) is designed to be elastic in such a way that the top surface (7) points towards the bottom surface (6) and/or the one Side surface (16) towards the other side surface (16) of the base body (3) is deformable. Filter module (1) after claim 19 , characterized in that in each case at least one web (26, 28) assigned to the inlet side (8) for contaminated air of the bottom surface (6) and the top surface (7) and/or the two side surfaces (16) as spring elements (35, 37, 38) are trained. Filter module (1) after claim 20 , characterized in that the spring element (35, 37, 38) is designed as a spiral spring and only extends over a section of the at least one web (26, 28, 34). Filter module (1) after Claim 21 , characterized in that the spiral spring is designed as a circular segment, as a U-shaped (37, 38), as an Ω-shaped (40) or as a V-shaped (35) spiral spring. Filter module (1) according to one of claims 19 until 22 , characterized in that the bottom surface (6) and the top surface (7) of the base body (3) in the area of the inlet side (8) for polluted air each have a single, first web (26, 28), each with two circular segment-like or U-shaped torsion springs (37, 38) are provided, and in that a second, straight, horizontal web (27, 27a) forms the bottom surface (6) and the top surface (7) of the base body (3). Filter module (1) according to one of claims 19 until 23 , characterized in that the bottom surface (6) is connected to the top surface (7) in the area of the inlet side (8) for polluted air via at least two vertically running webs (34) and in that the webs (34) each have a section which is designed as a V-shaped or Ω-shaped spiral spring (35, 40). Filter module (1) after Claim 24 , characterized in that each pocket filter (5) has two substantially perpendicular, with the Ω-shaped or V-shaped section (35) provided webs (34) are provided and that each pocket filter (5) from its outer, not with the sides (10) which come into contact with contaminated air is detachably held by the webs (34). Housing with a filter module (1) arranged therein according to one of Claims 1 until 25 , characterized in that the housing is designed as a rectangular box element (21a, 23, 24) with a front opening (20) for the supply of contaminated air and a rear opening (21) arranged downstream of the respective filter module (1) for discharge of purified air.

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