WO2023213484A1

WO2023213484A1 - Filter insert, filter unit and filter apparatus

Info

Publication number: WO2023213484A1
Application number: PCT/EP2023/058752
Authority: WO
Inventors: Matthias Albert; Karsten WALDEMAR
Original assignee: Vision Green Solutions GmbH
Priority date: 2022-05-04
Filing date: 2023-04-04
Publication date: 2023-11-09
Also published as: DE102022110957A1

Abstract

Filter insert (112, 400) for purification and/or treatment of water comprising at least one bottom element (122, 404) having at least one passage opening (124); at least one cover element (126, 404) having at least one passage opening (128); and at least one planar filter ply (116, 402) arranged and/or clamped between the at least one bottom element (122, 404) and the at least one cover element (126, 404) and composed of an electroactive filter material configured for accumulating substances present in the water by adsorption, and filter unit (114) for purification and/or treatment of water comprising at least two filter inserts (112, 400), wherein the filter inserts (112, 400) are arranged serially, in particular directly adjacently, in particular substantially in the flow direction of the water, and filter apparatus (100, 200, 300) for purification and/or treatment of water comprising at least one filter insert (112, 400) or at least one filter unit (114), wherein the filter apparatus (100, 200, 300) comprises a housing (102, 202, 302) in which the at least one filter insert (112, 400) or the at least one filter unit (114) is arranged and/or secured.

Description

Filter insert, filter unit and filter device

Description

The invention relates to a filter insert for cleaning and/or treating water. The invention also relates to a filter unit and a filter device for cleaning and/or treating water.

[0002] For example, a filter for sterilizing water is known from the document DE 10 2014 101 187 A1. The filter has channels that run parallel to one another and in a longitudinal direction of the filter and are delimited by an electroactive material. When the filter is in operation, the water to be filtered flows in the longitudinal direction from the channel inlet to the channel outlet through the channels without flowing through the electroactive material. Microorganisms contained in the water are attached to the electroactive material through electroadsorption.

The use of filter devices, especially for the treatment of surface water for mobile use, in private households and in mobile outdoor areas, is becoming increasingly important in drinking water treatment. In addition to drinking water treatment with low pressure loss in order to significantly reduce energy consumption, optimal and efficient treatment and purification of the water is also necessary. Furthermore, it is desirable to remove several groups of pollutants with a single filter device or at least to significantly reduce their concentration. It has also been shown that there is a need for water treatment that is individually tailored to customer needs and can be changed at a later date.

The invention is based on the object of structurally and/or functionally improving a filter insert mentioned at the outset. In addition, the invention is based on the object of structurally and/or functionally improving a filter unit mentioned at the outset. Furthermore, the invention is based on the object of structurally and/or functionally improving a filter device mentioned above. [0005] The problem is solved with a filter insert with the features of claim 1. In addition, the task is solved with a filter unit with the features of claim 21. Furthermore, the task is solved with a filter device with the features of claim 27. Advantageous embodiments and/or further developments are the subject of the subclaims.

One aspect relates to a filter insert for cleaning and/or treating water, for example surface water and/or drinking water. Cleaning and/or processing can also be understood as meaning disinfection, sterilization or removal of inorganic and/or organic substances and/or contaminants.

The filter insert can have at least one base element with at least one through opening. The filter insert can have at least one cover element with at least one through opening. The filter insert can have at least one filter layer. The filter layer can be arranged and/or clamped between the at least one base element and the at least one cover element. The filter layer can be planar and/or flat or flat. The filter layer can essentially be designed like a, for example flat, sheet. The filter layer can be essentially rectangular in cross section, for example. The filter layer can be formed, for example in cross section, essentially circular, circular segment-like or C-shaped. For example, the flat/planar filter layer can be or will be shaped into a circle or semicircle or segment of a circle. Two ends and/or end sections of the filter layer can overlap at least in sections, for example in the circumferential direction. The filter layer can define or have at least one planar and/or flat or flat surface, such as surface. The filter layer can have at least one smooth surface. The filter layer can have and/or define two substantially parallel surfaces, such as surfaces. The two mutually essentially parallel surfaces, such as surfaces, can be flat and/or planar. The filter layer can have and/or define two substantially concentric surfaces, such as surfaces. The two surfaces, which are essentially concentric to one another, such as surfaces, can be designed to be smooth, in particular throughout. The areas, such as surfaces, of the filter layer can each extend in a plane over the entire filter layer and/or each define and/or form a complete side of the filter layer. The filter layer can be designed so that the water can flow through the surfaces, such as surfaces, of the filter layer. The filter layer can be made from or include an electroactive filter material. The filter layer and/or the filter material can be designed to deposit substances contained in the water through adsorption, i.e. adsorptively. The filter layer and/or the filter material can be designed to remove or reduce substances contained in the water.

The filter layer and/or the filter material can be designed to deposit and/or remove or reduce pollutants and/or inorganic substances and/or organic substances and/or microorganisms contained in the water by adsorption, i.e. adsorptively. The pollutants can be hormone residues or germs. The pollutants can be ubiquitously occurring germs. The pollutants can cause pathogenic germs, such as: B. Legionella pneumophila. Pseudomonas aeruginosa or Escherichia coli strains. The filter layer and/or the filter material can be designed to deposit and/or remove or reduce hormones contained in the water and/or nitrate and/or heavy metals contained in the water by adsorption. The filter layer and/or the filter material can be designed to reduce hormones and/or remove nitrate or heavy metals and/or to eliminate disturbing water properties, such as odor.

The filter layer and/or the filter material can be designed to remove substances contained in the water by electroadsorption, such as. B. van der Waals interaction, and / or chemical adsorption, such as chemisorption, to add and / or thus remove and / or reduce from the water to be treated. The filter layer and/or the filter material can have an electroactive property. The electroadsorption can be made possible or formed by the electroactive properties of the filter layer and/or the filter material. The filter layer and/or the filter material can have an electrochemical potential, such as zeta, when in contact with water. Potential, training. The filter layer and/or the filter material can have a structure, such as surface structure, which forms an electrochemical potential, such as zeta potential, in contact with water. The structure, such as surface structure, of the filter layer and/or the filter material can be created or applied during the manufacturing process itself or subsequently, for example by a coating. The filter layer and/or the filter material can have a coating, such as a surface coating, which forms an electrochemical potential, such as zeta potential, in contact with water. The coating, such as surface coating, of the filter layer and/or the filter material can be produced or applied during the manufacturing process itself or subsequently.

The at least one filter layer and/or the filter material can be interchangeable or can be arranged interchangeably. The filter insert can be designed to be replaceable. The filter insert can be modular.

[001 1] The filter insert can be designed so that the water flows through the at least one filter layer. The filter layer and/or the filter material can be designed to allow flow through. The at least one floor element can be or define the flow inlet side. The at least one cover element can be or define the flow outlet side.

The at least one floor element can have and/or form a plurality of through openings and/or a grid structure. The at least one cover element can have and/or form a plurality of through openings and/or a grid structure. The lattice structure can have or form the plurality of through openings. The lattice structure can have several struts delimiting the through openings. The through openings of the at least one base element and the through openings of the at least one cover element can be arranged one behind the other and/or coaxially, for example essentially in the flow direction of the water. Each through opening of the at least one base element can be assigned to a through opening of the at least one cover element. The through openings of the at least one base element and the through openings of the at least one cover element can be arranged so that the water flows essentially unhindered can flow through. The through openings of the at least one base element and the through openings of the at least one cover element can each have a common axis, such as an axis of symmetry. The through openings can be square, rectangular, round, circular or elliptical, or designed as an elongated hole.

The at least one filter layer can be arranged and/or clamped, for example essentially in the flow direction of the water, between the at least one base element and the at least one cover element, for example in the area of the through openings. The at least one filter layer can be arranged and/or clamped, for example essentially in the flow direction of the water, between the grid structure of the at least one base element and the grid structure of the at least one cover element.

The at least one base element and the at least one cover element can be connected to one another, for example pressed, locked, screwed, riveted or clipped. The at least one base element and the at least one cover element can be releasably connected to one another, in particular without damage.

The at least one base element and the at least one cover element can be connected to one another in a force-fitting or material-locking manner. The at least one base element and the at least one cover element can be glued, fused or welded to one another, at least in sections, for example ultrasonically welded. The at least one filter layer can be clamped or pressed/pressed in between the at least one base element and the at least one cover element, for example without adhesive. Alternatively, the at least one filter layer, the at least one base element and the at least one cover element can be cohesively connected to one another, for example glued, fused or welded.

The at least one base element and/or the at least one cover element can have at least one holding section, such as a clamping section and/or locking lug. The at least one holding section can be designed to hold and/or fix the at least one cover element on the at least one base element, for example in a captive manner.

The filter insert and/or the at least one base element and/or the at least one cover element can be essentially shell-shaped and/or cassette-shaped and/or frame-shaped and/or plate-shaped or cylindrical, such as hollow cylindrical. The filter insert and/or the at least one base element and/or the at least one cover element can be essentially circular-cylindrical. The filter insert and/or the at least one base element and/or the at least one cover element can be designed, for example in cross section, essentially circular, circular segment-like or C-shaped. The filter insert and/or the at least one base element and/or the at least one cover element can be designed in one piece or in several parts, for example in two parts.

For example, the at least one floor element can have two or more floor element parts. The floor element parts can be connected to one another, for example like a hinge. The floor element parts can be connected to one another via a hinge element or hinge section. The floor element parts can be essentially shell-shaped and/or, for example in cross section, essentially circular segment-like or C-shaped. The floor element parts can be designed to be pivotable essentially in the circumferential direction. The floor element parts can essentially form a circular shape in cross section in a closed state and/or essentially form two connected half-shells in cross section in an open state.

For example, the at least one cover element can have two or more cover element parts. The cover element parts can be connected to one another, for example like a hinge. The cover element parts can be connected to one another via a hinge element or hinge section. The cover element parts can be essentially shell-shaped and/or, for example in cross section, essentially circular segment-like or C-shaped. The cover element parts can be pivoted essentially in the circumferential direction be trained. The cover element parts can essentially form a circular shape in cross section in a closed state and/or essentially form two connected half-shells in cross section in an open state.

The filter insert can be designed as a cassette. The filter insert can be designed to be insertable into a filter device. The at least one filter layer can be arranged and/or formed substantially parallel to the at least one base element and/or to the at least one cover element.

The filter insert can have at least one sealing element, for example O-ring, sealing cord or sealing lip. The filter insert can have at least one sealing structure. The at least one sealing structure can be tooth-shaped or groove-shaped. The at least one sealing element and/or the at least one sealing structure can be effectively arranged between the at least one base element and the at least one cover element. The at least one sealing element and/or the at least one sealing structure can be a circumferential sealing element or a circumferential sealing structure. The at least one sealing element and/or the at least one sealing structure can be arranged circumferentially on the at least one base element and/or on the at least one cover element.

The at least one base element and/or the at least one cover element can have at least one positioning element, for example a pin or nose, for positioning and/or aligning the at least one cover element or base element. The at least one base element and/or the at least one cover element can have at least one positioning recess designed to complement the at least one positioning element. The at least one positioning element can engage in the at least one positioning recess. The at least one filter layer can have at least one positioning recess which is designed to complement the at least one positioning element and through which the at least one positioning element can protrude. The filter insert can have several cover elements, several base elements and several filter layers. The cover element of the preceding or upstream filter layer can be the base element of the subsequent or downstream filter layer. In this way, several filter layers can be arranged one behind the other, which are fixed in particular by means of the respective base or cover element.

The at least one base element and the at least one cover element or the several cover elements and the several base elements can be fixed and/or held and/or clamped together by means of at least one fixing element. For example, a fixing element can be arranged on two opposite end faces, in particular of the filter insert. The at least one fixing element can be circular and/or annular. The at least one fixing element can have a receiving area for receiving a section, such as a front section, of the at least one base element and the at least one cover element. The receiving area can be designed as a groove, such as an annular groove.

The at least one base element and the at least one cover element can be connected to the at least one fixing element, for example pressed, locked, screwed, riveted or clipped. The at least one fixing element and the at least one base element and the at least one cover element can be releasably connected to one another, in particular without damage. The at least one base element and the at least one cover element can be connected to the at least one fixing element in a force-fitting or material-locking manner. The at least one base element and the at least one cover element can be glued, fused or welded, for example ultrasonically welded, to the at least one fixing element, at least in sections.

The electroactive filter material of the at least one filter layer can have an electroactive property and/or at least partially an electroactive section/area. The electroactive filter material of the at least one filter layer can be or comprise a carrier material formed with an electroactive substance or layer. The electroactive section/area or substance or Layer can form an electrochemical potential, such as zeta potential, in contact with water. The carrier material can be coated with an electroactive substance or layer. The carrier material can be planar and/or planar or flat. The carrier material can be formed, for example in cross section, essentially circular, circular segment-like or C-shaped. The carrier material can have or consist of or be made from a felt, woven fabric, knitted fabric, fleece and/or fibers or a mixture thereof. The fibers can be plastic fibers, such as polymer fibers, carbon fibers and/or glass fibers, or a mixture thereof. The felt, the woven fabric, the knitted fabric and/or the fleece can be made from the fibers. The carrier material can be a ceramic or metallic carrier substrate. The carrier material can be a carrier membrane, for example made of plastic material or rubber material or rubber material. The carrier material can be porous and/or water-permeable. The carrier substrate can be porous and/or water-permeable. The carrier membrane can be porous and/or water-permeable.

Another aspect relates to a filter unit for cleaning and/or treating water. The filter unit can have at least one filter insert. The filter unit can have several, for example two, three, four or more, filter inserts. The filter unit can, for example, have at least two filter inserts. The at least one filter insert or the several or at least two filter inserts can be designed as described above and/or below.

The filter inserts of the filter unit can be arranged one behind the other, in particular directly adjacent, in particular essentially in the flow direction of the water. The filter inserts can be arranged essentially mirror-inverted to one another and/or parallel or concentric.

At least one sealing element and/or at least one sealing structure can be effectively arranged between the at least one base element of the one filter insert and the at least one base element of the at least one other filter insert. Between the at least one cover element of the one filter insert and the at least one cover element of the at least one other filter insert, at least one sealing element and/or at least one sealing structure can be effectively arranged. At least one sealing element and/or at least one sealing structure can be effectively arranged between the at least one base element of the one filter insert and the at least one cover element of the at least one other filter insert. The at least one sealing element can be, for example, an O-ring, a sealing cord or a sealing lip. The at least one sealing structure can be tooth-shaped or groove-shaped. The at least one sealing element and/or the at least one sealing structure can be a circumferential sealing element or a circumferential sealing structure. The at least one sealing element and/or the at least one sealing structure can be arranged circumferentially on the at least one base element and/or on the at least one cover element. For example, at least one sealing element and/or at least one sealing structure can be arranged circumferentially on the at least one base element and on the at least one cover element.

The filter inserts of the filter unit can be connected to one another, for example pressed, locked, screwed, riveted or clipped together. The filter inserts of the filter unit can be releasably connected to one another, in particular without damage. The filter unit can have at least one holding element. The at least one holding element can be a holding clip. The at least one holding element can be designed to releasably connect at least two filter inserts to one another and/or to fix them against one another.

The filter unit can be essentially cassette-shaped or cylindrical. The filter unit can be essentially shell-shaped and/or frame-shaped and/or plate-shaped or cylindrical, such as hollow cylindrical. The filter unit can, for example, be designed to be essentially circular, segment-like or C-shaped in cross section. The filter unit can be designed as a cassette. The filter unit can be designed to be insertable into a filter device. The filter unit can be designed to be replaceable. The filter unit can be designed to be modular. The filter unit can be designed so that the water flows through the filter inserts. The filter unit can be designed to allow flow through. The filter unit can have a flow inlet side. The filter unit can have a flow outlet side. A filter insert of the filter unit can define the flow inlet side and/or be assigned to it. Another filter insert of the filter unit can define the flow outlet side and/or be assigned to it.

Another aspect relates to a filter device for cleaning and/or treating water. The filter device can be a water treatment device. The filter device can have at least one filter insert. The filter device can have several, for example two, three, four or more, filter inserts. The at least one filter insert or the multiple filter inserts can be designed as described above and/or below. The filter device can have at least one filter unit. The filter device can have several, for example two, three, four or more, filter units. The at least one filter unit or the multiple filter units can be designed as described above and/or below.

The filter device can comprise a housing. The at least one filter insert or the at least one filter unit can be arranged and/or fixed in the housing. The plurality of filter inserts or the plurality of filter units can be arranged and/or fixed in the housing. The at least one filter insert or the several filter inserts or the at least one filter unit or the several filter units can be arranged and/or fixed in an interchangeable manner, in particular in the filter device or in the housing.

The filter device can have at least one raw water inlet. The at least one raw water inlet can serve and/or be designed to supply water to be cleaned and/or treated. The filter device can have at least one water outlet. The at least one water outlet can serve and/or be designed to drain away the cleaned and/or treated water. The at least one raw water inlet and the at least one water outlet can be on opposite sides of the Housing can be provided. The at least one raw water inlet and the at least one water outlet can be arranged essentially diagonally opposite one another. For example, a raw water inlet can be arranged on one side of the housing and two water outlets can be arranged on another, in particular opposite side. The raw water inlet can be arranged on a top or bottom of the housing. The raw water inlet can be arranged, for example in the middle, on one side of the housing. The two water outlets can be arranged on a top or bottom of the housing. A water outlet can be arranged at the top of the housing. Another water outlet can be arranged on the underside of the housing.

The filter inserts or filter units can be arranged functionally one behind the other or functionally next to one another, for example essentially in the flow direction of the water, in particular in such a way that water flows through them or their filter layers, for example simultaneously. The filter inserts or the filter units can be arranged essentially parallel or concentric to one another. The filter inserts or filter units can be arranged directly adjacent to one another or spaced apart from one another.

A channel can be formed at least between two filter inserts or two filter units. The channel can be connected to the at least one raw water inlet or to the at least one water outlet.

The filter device can have a device such as a sensor device. The device or sensor device can have at least one sensor and/or an evaluation unit and/or a control unit. The evaluation unit and/or the control unit can have a processor and/or a memory. The device or sensor device and/or its evaluation unit can be designed to determine an exhaustion of the adsorption capacity and/or to detect a flow rate and/or to determine a necessary change of a filter insert or a filter unit. The device or sensor device and/or its evaluation unit can be designed to determine and/or record a pressure, such as water pressure, a quantity, such as the amount of water, a concentration of a substance, a time and/or a time interval. The Device or sensor device and/or its evaluation unit can be designed to determine a necessary change of a filter insert or a filter unit based on the pressure, such as water pressure, the quantity, such as the amount of water, the concentration of a substance, the time and/or the time interval. The device or sensor device and/or its control unit can be designed to output a control signal.

The filter device can have a device such as a signaling device. The device or signaling device can be designed to output a signal, such as a light signal, electrical signal and/or acoustic signal. For this purpose, the device or signaling device can have a control unit, a lamp and/or a loudspeaker. The device or signaling device can be designed to output the signal based on the control signal of the sensor device or its control unit. The control unit can have a processor and/or a memory.

In summary and in other words, the invention results in, among other things, a water treatment unit, such as a filter device, with at least one or more adsorbers. The water treatment unit can be a modular unit, in particular to reduce several groups of pollutants, such as. B. hormone residues or germs. The use of the water treatment unit can be intended primarily for the treatment of surface water for mobile use, in private households and in mobile outdoor areas. The water treatment unit can have energy-saving components. This makes it possible to use it in remote locations. In addition to the ubiquitous germs, the water treatment unit can also be used to remove pathogenic germs, such as: B. Legionella pneumophila. Pseudomonas aeruginosa or some Escherichia coli strains can be reduced. In addition or alternatively, further adsorption strategies/properties for hormone reduction and/or removal of nitrate or heavy metals as well as the elimination of less questionable but disruptive water properties, such as odor impairment due to the necessary chlorination of the water supplier, can be integrated. These properties can be based on the functionalization of a special filter material, such as non-woven material, and/or its integration into a processing unit. In contrast to ultrafiltration, this material can enable drinking water treatment with low pressure loss, meaning that significantly less energy is required. In contrast to a pure activated carbon block filter, substances such as germs can be retained through adsorption before coming into contact with the activated carbon. This can prevent the activated carbon from being metabolized by substances such as microorganisms and growth on the activated carbon. The retention effect on the substances to be retained, such as microorganisms, can result from or be based on their surface charge, the so-called van der Waals forces, which securely bind the substances, such as germs, to the adsorber surface. These forces can be induced, especially permanently, by material-specific properties of the filter material, such as adsorbers. The chemical water ingredients can be bound to the functionalized surface of the filter material by forming a chemical bond, the so-called chemisorption. The modular structure of the water treatment unit or adsorber can enable individual water treatment tailored to customer needs. This can also be adjusted later by the customer. By integrating a monitoring concept, the water treatment unit can also be monitored by the customer himself and/or, if necessary, individual modules, such as filter inserts or filter units, can be replaced individually after their respective service life has been reached.

The adsorption process can represent a physical treatment. The substances to be removed can be retained on the filter material, such as adsorption material, and/or removed from the water to be treated. In contrast to chemical treatment, no additional substances need to be added, which could impair the water quality. The removal of interfering substances can be done without any side effects from added substances.

The invention makes it possible, among other things, to remove heavy metals, nitrates, hormone residues and/or germs from drinking water. By combining these individual functionalities, a customizable one can be created

Water treatment unit can be realized. The processing cannot therefore be determined solely by the technical properties of the processing system, such as: B. a UV disinfection, but can be tailored specifically to the respective requirements. For example, a reduction in nitrate can be integrated. If there is a high level of nitrate pollution, the functionality can also be doubled in order to achieve a higher absorption capacity. For other applications, for example, heavy metal reduction can be provided instead of nitrate. Furthermore, the structural design and production of the filter unit and/or the filter insert can be carried out without the use of additional adhesives, such as. B. epoxy resins can be realized.

Exemplary embodiments of the invention are described in more detail below with reference to figures, showing schematically and by way of example:

1 shows a variant of a filter device in a perspective view;

2 shows the filter device according to FIG. 1 in a top view;

3 shows the filter device according to FIG. 1 in a side view;

4 shows the filter device according to FIG. 1 in another side view;

5 shows the filter device according to FIG. 1 in a sectional view in the longitudinal direction;

6 shows the filter device according to FIG. 1 in a sectional view in the transverse direction;

7 shows a sectional view of a detail of the filter device according to FIG. 1;

FIG. 8 is a sectional view of a detail of the filter device according to FIG. 1;

9 shows a further variant of a filter device in a perspective view;

10 shows the filter device according to FIG. 9 in a sectional view in the longitudinal direction;

11 shows a further variant of a filter device in a sectional view in the longitudinal direction; 12 shows a further variant of a filter device in a schematic exploded view;

Fig. 13 shows part of the filter device according to Fig. 12;

14 shows a further part of the filter device according to FIG. 12;

15 shows the filter device according to FIG. 12 in the assembled state in a perspective view;

16 shows the filter device according to FIG. 12 in the assembled state in a side view; and

Fig. 17 shows the filter device according to Fig. 12 in a sectional view.

[0043] Figs. 1 to 4 show different views of a variant of a filter device 100 for cleaning and/or treating water. The filter device 100 has a housing 102 with a raw water inlet 104 for supplying the water to be cleaned or treated and a water outlet 106 for discharging the water cleaned and/or treated with the filter device 100.

In the present exemplary embodiment, the raw water inlet 104 and the water outlet 106 are arranged essentially diagonally opposite one another on opposite sides of the housing 102. Furthermore, the raw water inlet 104 is essentially provided on an underside of the housing 102 and the water outlet 106 is essentially provided on an upper side of the housing 102.

The filter device 100 or its housing 102 is shell-shaped and has a lower shell 108 and an upper shell 110, which are connected to one another in a sealing manner. The filter device 100 also has a filter unit 1 14 formed from two filter inserts 112, which is effectively arranged and fixed in the housing 102.

The filter device 100 can further comprise a sensor device (not shown in FIGS. 1 to 8), which is designed to determine an exhaustion of the adsorption capacity and/or to detect a flow rate and/or a necessary one To determine the change of a filter insert 112 or the filter unit 1 14. The sensor device and/or an evaluation unit of the sensor device can be designed to determine and/or detect a pressure, such as water pressure, a quantity, such as the amount of water, a concentration of a substance, a time and/or a time interval and, based on this, a necessary change a filter insert 1 12 or the filter unit 1 14 to determine.

[0047] Figs. 5 to 8 show various sectional views of the filter device 100. The filter unit 1 14 or its filter inserts 1 12 are arranged interchangeably in the housing 102 of the filter device 100, the filter inserts 1 12 being functionally arranged one behind the other essentially in the flow direction of the water and filter layers 1 16 water flows through the filter inserts 112. The filter inserts 1 12 are arranged essentially parallel to one another, mirror-inverted and directly adjacent to one another.

The filter unit 1 14 is designed essentially in the form of a cassette and has at least one holding element 1 18, such as a holding clip 118, which is designed to releasably connect the two filter inserts 112 to one another and to fix them against one another. A sealing element 120, such as an O-ring, sealing cord or sealing lip, is effectively arranged between the two filter inserts 1 12 and . The filter inserts 1 12 can thus be removed from each other again without damage.

Each filter insert 1 12 has a base element 122 with a plurality of through openings 124 and a cover element 126 with a plurality of through openings 128. The base elements 122 and the cover elements 126 thus have a grid structure formed by the through openings 124, 128. The through openings 124 of the respective base element 122 and the through openings 128 of the respective cover element 126 are arranged one behind the other and/or coaxially essentially in the flow direction of the water.

A planar filter layer 116 made of an electroactive filter material is arranged and clamped between the respective base elements 122 and cover elements 126. The filter layers 1 16 are designed to adsorb substances contained in the water. In particular, the filter layers 116 are in the area of Through openings 124, 128 are arranged or cover them, so that the water has to flow through the through openings 124, 128 and the filter layers 1 16.

The electroactive filter material of the filter layers 1 16 is designed in particular to attach pollutants and/or microorganisms contained in the water by adsorption, for example by electroadsorption and/or chemical adsorption. The electroactive filter material of the filter layers 1 16 can comprise a carrier material formed with an electroactive layer, in particular a planar shape. The carrier material can have or consist of a felt, fabric, knitted fabric, fleece and/or fibers, for example plastic fibers such as polymer fibers, carbon fibers and/or glass fibers or a mixture thereof. Alternatively, the carrier material can be a ceramic or metallic carrier substrate or a carrier membrane made, for example, from plastic material. The filter layers 116 and their carrier material are designed to be water-permeable, so that the water to be treated can flow through the filter layers 116 or the carrier material.

Both the filter inserts 1 12 and their filter layers 1 16 are arranged interchangeably and designed to be interchangeable. The cover elements 126 can be detached from the base elements 122 without causing damage. For this purpose, for example, locking sections 130 and locking lugs 132 can be provided, which captively connect the respective base element 122 with the associated cover element 126 to one another, such as locking or clipping. As a result, the respective filter layer 1 16 can be clamped between the base element 122 and the cover element 126. In the present exemplary embodiment according to FIGS. 1 to 8, the filter inserts 122 as well as the base elements 122 and cover elements 126 are essentially cup-shaped and/or cassette-shaped. The filter layers 1 16 are arranged essentially flat and parallel to the base elements 122 and to the cover elements 126.

Each filter insert 122 has a sealing element 134, for example an O-ring, a sealing cord or a sealing lip, which is effectively arranged between the base element 122 and the cover element 126. Furthermore, in the present case In the exemplary embodiment, the base elements 122 have a plurality of positioning elements 136, such as pins or lugs, for positioning and/or aligning the cover element 126 and the filter layers 116. The filter layers 1 16 have positioning recesses that are complementary to the positioning elements 136, through which the positioning elements 136 can protrude. The cover elements 126 have positioning recesses that are complementary to the positioning elements 136, into which the positioning elements 136 can then engage.

[0054] Figs. 9 and 10 show a further variant of a filter device 200 for cleaning and/or treating water. The filter device 200 essentially corresponds to the filter device 100, but has two filter units 114 which are arranged in a housing 202. The two filter units 114 can be fixed or held in the housing 202 with a holding device and/or spacing device (not shown in FIGS. 9 and 10).

The two filter units 1 14 are arranged essentially parallel to one another and spaced apart from one another, so that a channel 204 is formed between the two filter units 1 14 and is connected to the raw water inlet 104. The housing 202 also has two water outlets 106, which are arranged on opposite sides, here essentially on the bottom and on the top, with the raw water inlet 106 in turn being provided opposite the water outlets 106. The two filter units 114 are thus functionally arranged next to one another essentially in the flow direction of the water, such that water flows through them or their filter layers 1 16 at the same time. The water can flow from the raw water inlet 106 into the channel 206 formed in order to then flow through the respective filter unit 1 14 to the respective water outlet 106.

[0056] In addition, reference is made in particular to FIGS. 1 to 8 and the associated description.

11 shows a further variant of a filter device 300. The filter device

300 essentially corresponds to the filter device 100, but has two filter units 114 which are arranged in a housing 302. In this exemplary embodiment, the two filter units 1 14 are functionally arranged one behind the other essentially in the flow direction of the water, such that water flows through them or their filter layers 1 16 one after the other. The water can flow from the raw water inlet 106 through the first filter unit 114 and then through the second filter unit 114 to the water outlet 106.

Furthermore, in addition, reference is made in particular to FIGS. 1 to 10 and the associated description.

[0060] Figs. 12 to 17 show a further variant of a filter insert 400 for cleaning and/or treating water in different views. The filter insert 400 is designed as a cylinder, in particular a hollow cylinder. The filter insert 400 has several, here three, filter layers 402. Furthermore, the filter insert 400 has a plurality of cover elements or base elements 404, wherein the cover element 404 of the preceding or upstream filter layer 402 is the base element 404 of the subsequent or downstream filter layer 402. One filter layer 402 is effectively arranged between two elements 404 and is fixed and clamped by means of this.

[0061] The filter layers 402 are essentially circular in cross section. The base elements 404 and cover elements 404 are each designed in two parts and each have two base element parts 406 or cover element parts 406. The base element parts 406 or cover element parts 406 of a base element 404 or cover element 404 are connected to one another in a hinge-like manner, so that they can be pivoted essentially in the circumferential direction. The base element parts 406 or cover element parts 406 are essentially shell-shaped and have a substantially circular segment-like or C-shaped cross section. In a closed state, as shown in Figs. 13 to 17, the base element parts 406 and cover element parts 406 have a substantially circular shape in cross section. In an open state, as shown in FIG. 12, the base element parts 406 and cover element parts 406 essentially form two connected half-shells in cross section. [0062] The filter insert 400 also has two fixing elements 408. By means of the

Fixing elements 408, the base elements 404 and cover elements 404 are fixed to one another and clamped together. As in Figs. 15 and 16, a fixing element 408 is arranged on one end face of the filter insert 400. The fixing elements 408 are annular and have a receiving area 410 designed as an annular groove for receiving a section, such as an end section, of the base elements 404 or cover elements 404. In this receiving area 410, the base elements 404 or cover elements 404 are received and held in sections. The filter layers 402 can also protrude into the receiving area 410. The base elements 404 or cover elements 404 are connected to the fixing elements 408, for example pressed, locked, screwed, riveted or clipped. Additionally or alternatively, the base elements 404 or cover elements 404 can be glued, fused or welded, for example ultrasonically welded, to the fixing elements 408 at least in sections.

[0063] “May” refers in particular to optional features of the invention. Accordingly, there are also further developments and/or exemplary embodiments of the invention which additionally or alternatively have the respective feature or features.

If necessary, isolated features can also be selected from the feature combinations disclosed here and used in combination with other features to delimit the subject matter of the claim, while breaking down any structural and/or functional connection that may exist between the features. Reference number 0 filter device 2 housing 4 raw water inlet 6 water outlet 8 lower shell 10 upper shell 12 filter inserts 14 filter unit 16 filter layers 18 holding element 20 sealing element 22 base elements 24 through openings 26 cover element 28 through openings 30 locking sections 32 locking lugs 34 sealing element 36 positioning element 00 filter device 02 housing 04 channel 00 filter device 02 housing 00 Filter insert 02 filter layers 04 cover elements or base elements 06 cover element parts or base element parts 408 fixing elements

410 recording area

Claims

Claims Filter insert (112, 400) for cleaning and/or treating water, comprising

- at least one floor element (122, 404) with at least one through opening (124);

- at least one cover element (126, 404) with at least one through opening (128); and

- at least one planar-shaped filter layer (1 16, 402) arranged and/or clamped between the at least one base element (122, 404) and the at least one cover element (126, 404) made of an electroactive filter material, which is formed, substances contained in the water to accumulate through adsorption. Filter insert (112, 400) according to claim 1, characterized in that the electroactive filter material is designed to deposit pollutants and/or microorganisms contained in the water by adsorption. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the electroactive filter material is designed to deposit the substances contained in the water by electroadsorption and/or chemical adsorption. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one filter layer (116, 402) is arranged interchangeably and/or the filter insert (112, 400) is designed to be interchangeable. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the filter insert (112, 400) is designed such that the water flows through the at least one filter layer (116, 402). Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one base element (122, 406) and/or the at least one cover element (126, 406) has several

Has through openings (124, 128) and/or a lattice structure. Filter insert (112, 400) according to claim 6, characterized in that the through openings (124) and/or the grid structure of the at least one base element (122, 404) and the through openings (128) and/or the grid structure of the at least one cover element (126 , 404), in particular essentially in the flow direction of the water, are arranged one behind the other and/or coaxially. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one filter layer (116, 402), in particular substantially in the flow direction of the water, between the at least one base element (122, 404) and the at least one cover element (126, 404), in particular in the area of the through openings (124, 128), and/or between the grid structure of the at least one base element (122, 404) and the grid structure of the at least one cover element (126, 404) and/or is clamped . Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one base element (122, 404) and the at least one cover element (126, 404) are releasably connected to one another, in particular without damage, in particular pressed, locked, screwed riveted or clipped. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one base element (122, 404) and the at least one cover element (126, 404) are connected to one another at least in sections in a materially bonded manner, in particular glued, fused or welded . Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one base element (122, 404) and/or the at least one cover element (126, 404) is at least one Holding section (130, 132), such as clamping section (130) and/or locking lug (132), which is designed to secure the at least one cover element (126, 404) to the at least one base element (122, 404), in particular captively, to hold and/or fix. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the filter insert (112, 400) and/or the at least one base element (122, 404) and/or the at least one cover element (126, 404) are essentially shell-shaped and / or cassette-shaped and / or frame-shaped and / or plate-shaped or cylindrical, such as hollow cylindrical, is or are designed. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one filter layer (116, 402) is substantially parallel to the at least one base element (122, 404) and/or to the at least one cover element (126, 404). is arranged. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the filter insert (112, 400) has at least one sealing element (134), such as an O-ring, sealing cord or sealing lip, and/or at least one sealing structure, which or . which is effectively arranged between the at least one base element (122, 404) and the at least one cover element (126, 404). Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the at least one base element (122, 404) and/or the at least one cover element (126, 404) has at least one positioning element (136), such as a pin or nose, for positioning and / or aligning the at least one cover element (126, 404) or base element (122, 404) and / or that the at least one base element (122, 404) and / or the at least one cover element (126, 404) at least has a positioning recess which is designed to complement the at least one positioning element (136) and into which the at least one positioning element (136) can engage. Filter insert (112, 400) according to claim 15, characterized in that the at least one filter layer (116, 402) has at least one positioning recess which is designed to complement the at least one positioning element (136), through which the at least one positioning element (136) can protrude. Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the filter insert (112, 400) has a plurality of cover elements (126, 404), a plurality of base elements (122, 404) and a plurality of filter layers (116, 402), wherein the cover element (126, 404) of the preceding or upstream filter layer (116, 402) is the base element (12, 4042) of the subsequent or downstream filter layer (116, 402). Filter insert (112, 400) according to at least one of the preceding claims, characterized in that the electroactive filter material of the at least one filter layer (116, 402) comprises a carrier material formed, in particular planar, with an electroactive substance or layer. Filter insert (112, 400) according to claim 18, characterized in that the carrier material has or consists of a felt, fabric, knitted fabric, fleece and / or fibers, in particular plastic fibers, such as polymer fibers, carbon fibers and / or glass fibers or a mixture thereof. Filter insert (112, 400) according to claim 18, characterized in that the carrier material is a ceramic or metallic carrier substrate, or that the carrier material is a carrier membrane, in particular made of plastic material. Filter unit (114) for cleaning and/or treating water, comprising at least two filter inserts (1 12, 400) according to at least one of the preceding claims, wherein the filter inserts (1 12, 400), in particular essentially in the flow direction of the water, one behind the other, in particular, are arranged directly adjacent. Filter unit (114) according to claim 21, characterized in that the filter inserts (112, 400) are arranged essentially mirror-inverted to one another and/or parallel or concentric. Filter unit (114) according to claim 21 or 22, characterized in that at least one sealing element (120 ), such as O-ring, sealing cord or sealing lip, is effectively arranged. Filter unit (114) according to at least one of the preceding claims 21 to

23, characterized in that the filter inserts (1 12, 400) are connected to one another, in particular detachable without damage, in particular pressed, locked, screwed, riveted or clipped together. Filter unit (114) according to at least one of the preceding claims 21 to

24, characterized in that the filter unit (1 14) has at least one holding element (1 18), such as a retaining clip (118), which is designed to releasably connect the at least two filter inserts (112, 400) to one another and/or to fix them against one another . Filter unit (114) according to at least one of the preceding claims 21 to

25, characterized in that the filter unit (1 14) is essentially cassette-shaped or cylindrical. Filter device (100, 200, 300) for cleaning and/or treating water, comprising at least one filter insert (1 12, 400) according to at least one of the preceding claims 1 to 20 or at least one filter unit (1 14) according to at least one of the preceding claims 21 to 26, wherein the filter device (100, 200, 300) comprises a housing (102, 202, 302) in which the at least one filter insert (112, 400) or the at least one filter unit (1 14) is arranged and / or fixed is. Filter device (100, 200, 300) according to claim 27, characterized in that the at least one filter insert (112, 400) or the at least one filter unit (114) is arranged and/or fixed in an interchangeable manner. Filter device (100, 200, 300) according to claim 27 or 28, characterized in that the filter device (100, 200, 300) has at least one raw water inlet (104) and at least one water outlet (106) for discharging the cleaned and / or treated water . Filter device (100, 200, 300) according to at least one of the preceding claims 27 to 29, characterized in that the at least one raw water inlet (104) and the at least one water outlet (106) are provided on opposite sides of the housing (102, 202, 302). are. Filter device (100, 200, 300) according to at least one of the preceding claims 27 to 30, characterized in that a plurality of filter inserts (112, 400) or filter units (114) are provided, which are functionally one behind the other, in particular essentially in the direction of flow of the water are functionally arranged next to each other, in particular in such a way that water flows through them or their filter layers. Filter device (100, 200, 300) according to at least one of the preceding claims 27 to 31, characterized in that the filter inserts (112) or the filter units (1 14) are arranged essentially parallel or concentric to one another. Filter device (100, 200, 300) according to at least one of the preceding claims 27 to 32, characterized in that the filter inserts (1 12, 400) or filter units (1 14) are arranged directly adjacent to one another or spaced apart from one another. Filter device (100, 200, 300) according to at least one of the preceding claims 27 to 33, characterized in that at least between two filter inserts (112, 400) or two filter units (1 14) there is a channel (204) is formed, which is connected to the at least one raw water inlet (104) or to the at least one water outlet (106). Filter device (100, 200, 300) according to at least one of the preceding claims 27 to 34, characterized in that the filter device (100, 200, 300) comprises a device, such as a sensor device.