DE102009016380B4 - tissue - Google Patents

Abstract

Fabric (1) with a fabric layer (4) woven from warp veins (2) and weft veins (3), wherein at least the weft veins (3) consist at least partially of electrically conductive metal and are surrounded by electrical insulation (5), with an electrode is formed by weft cores, characterized in that a first electrically conductive weft core (6) is connected to a second electrically conductive weft core (8) that is adjacent, viewed in the warp direction (7), on only one longitudinal side (9), while the second electrically conductive weft core ( 8) is only connected on the other long side (11) to a third electrically conductive weft wire (10) that is adjacent to one another, viewed in the warp direction (7), so that the electrically conductive weft wires (6, 8, 10) form a snake-like pattern over the fabric surface (12 ) resulting in extending electrical conductor (13).

Description

The present invention relates to a fabric, in particular a wire fabric, and the use of such a fabric. The fabric according to the invention can in particular be part of an ionization device according to the invention, or used as part of such a device.

Various fabrics have become known in the prior art. A fabric typically consists of warp veins and weft veins. Warp and weft wires made of metal are called warp and weft wires. Typically, the warp wires are clamped for a weaving process and the weft wires are inserted or shot in between, the weft wires being guided through above or below the respective warp wires, depending on the desired weave. The weft wires are shot in from one long side and cut off at the end, so that all warp wires and all weft wires are contained as individual wires in the finished wire mesh.

The disadvantage of the known wire fabrics is that the warp and weft wires are in direct contact with one another and there is direct mechanical and also electrically conductive contact between the warp and weft wires.

the WO 2008/034605 A1 discloses an ionization device for air filter systems with two spaced electrodes which can be connected to a high voltage source, the electrodes each having a mesh or grid of electrically conductive material and a dielectric material being arranged between the electrodes. The electrodes have rod-shaped electrical conductors arranged parallel at a distance from one another in the longitudinal and transverse directions, which are electrically conductively connected to one another at the crossing points.

the DE 20 2006 004 033 U1 discloses a heating fabric for use as a floor covering, with the heating fabric each electrically conductive weft thread being longer than the width of the goods and its direction being reversed on the longitudinal edges of the goods. The electrically conductive weft is connected to the electrically conductive warp threads by z. B. soldering or welding and the weft and warp threads are electrically connected to each other.

It is therefore the object of the present invention to provide a fabric which is flexible and z. B. can also be used for electrical applications.

This object is achieved by a fabric having the features of claim 1. The ionization device according to the invention, in particular for air filter systems and the like, is the subject of claim 19. Preferred configurations are the subject of the dependent claims. Further advantages and features of the invention result from the exemplary embodiment.

The fabric according to the invention comprises at least one fabric layer woven from warp veins and weft veins, with at least the weft veins consisting at least partially of electrically conductive metal and being surrounded by electrical insulation. An electrode is formed by shot veins. At least one first electrically conductive weft core is only connected on one longitudinal side to an adjacent second electrically conductive weft core, viewed in the warp direction. The second electrically conductive weft core is only connected on the other long side to a third electrically conductive weft core that is adjacent to one another, viewed in the warp direction. As a result, the electrically conductive weft veins result in an electrical conductor that extends in a serpentine manner over the surface of the tissue.

The fabric of the present invention has many advantages. A considerable advantage of the fabric according to the invention are the weft veins surrounded by the insulation, which are mechanically separated from the warp veins by the insulating layer. In addition, there is insulation protection from the outside. This also ensures mechanical protection. Furthermore, protection against electrical contact is provided. This makes it more flexible to use. The electrical conductor that extends to and fro enables a wide range of possible uses and, in particular, also use in ionization devices, which are provided for use in air filter systems, for example.

The serpentine connection or arrangement of the weft wires allows the generation of defined electric fields.

The weft veins can be individually connected to each other on the longitudinal sides of the fabric.

It is also possible that in each case two or more weft veins are connected to one another on both sides and thus form a first group of weft veins. This first group of weft wires creates an electrically conductive connection from one long side of the fabric to the other long side of the fabric. A second group of strands consisting of one or more strands can in turn be electrically connected to one another on both sides. The second group of weft veins can turn in the warp direction connect a third set of weft veins. Again, the first group is electrically connected to the second group only on one long side, while the second group is electrically connected to the third group only on the other long side, etc. The first, second and third groups thus result in an electrical conductor extending in a serpentine manner. The first is preferably parallel to the second and each additional group.

It is also possible that between two trunks connected to one another on one side or else on both sides, trunks are also provided which are not electrically conductively connected to any other trunks.

The weft strands are preferably deflected on the longitudinal sides and then fed back again. As a result, several or even all of the weft veins consist of a single weft vein or a single uninterrupted strand. This simplifies production and a homogeneous fabric is achieved.

Advantageously, therefore, at least several of the weft veins consist of a coherent vein that is deflected on the two longitudinal sides in order to form the electrical conductor on a fabric section of the fabric.

In advantageous configurations, at least one warp core and/or weft core consists of a monofilament. It is also possible that at least one warp core and/or weft core consists of a multifilament. A multifilament can consist of individual fibers, threads or wires. The multifilament can be designed as a strand or cable.

In all configurations, the monofilament or the multifilament can comprise one or more wires. In a simple case, the weft veins consist at least partially of metal. For example, they can be designed as a wire surrounded by an insulating layer.

In preferred developments, the warp strands and the weft strands can have different properties and, in particular, consist of different materials and/or have different cross sections or diameters. Partially or completely identical properties of warp and weft veins are also possible and preferred.

In various configurations, at least some warp strands can be made of plastic. It is also possible that some veins are made of plastic.

Preferably, at least some strands of warp consist at least partially of at least one metal. It is also possible that the individual warp strands consist of different metals or materials.

Advantageously, at least some warp strands can also be connected to one another in an electrically conductive manner.

In the case of electrically conductive warp strands, a (further) electrode can also be formed by warp strands.

Viewed in the weft direction, the warp strands can have changing and, in particular, periodically changing properties. For example, viewed in the weft direction, a first warp core can be made of metal with an insulating layer, while the following warp core is made of plastic. It is also possible and preferred if successive warp strands differ in their optical surface properties.

In all cases it is possible that at least some warp and/or weft strands have a round or oval, triangular or polygonal, rounded or flattened cross-section.

The thickness of an insulation of at least one warp and/or weft wire is preferably sufficient to provide adequate insulation even when a high voltage of one thousand or several thousand volts is applied. This enables flexible use.

In preferred configurations, the material of the insulation contains additives or additives are applied to the outside of the insulation. In particular, an antifungal agent can be included or applied to the outside. A lubricant can also be applied, which is intended to simplify the weaving process or which causes less abrasion when the fabric is used in the event of direct mechanical contact.

It is possible that at least individual warp veins and/or weft veins differ in color.

In all applications, the fabric can be designed as an open-mesh fabric or as a dutch fabric. The mesh size depends on the application.

Advantageously, the fabric may comprise at least two layers of fabric, the individual n fabric layers can have different weaving parameters. In particular, the thickness of the warp and/or weft wires or weft veins can be different for the different fabric layers. Different cross sections, materials and weave types and the like are also possible and preferred.

In all of the configurations, at least some crossing points of the warp and weft strands can be connected to one another, in which case the insulation at the crossing points can in particular be glued, soldered, welded or otherwise connected to one another.

The fabric, or at least one layer of fabric, may be calendered to exhibit homogeneous properties.

The ionization device according to the invention is intended in particular for air filter systems and the like and has at least one fabric and at least two electrodes which can be connected to at least one high-voltage source. The tissue includes at least one electrode. The fabric comprises at least one layer of fabric woven from warp veins and weft veins. At least the shot cores consist at least partially of electrically conductive metal and are surrounded by electrical insulation. In this case, at least one first electrically conductive weft wire on the fabric surface is connected only on one longitudinal side to a second electrically conductive weft wire that is adjacent, viewed in the warp direction. The second electrically conductive weft core is only connected on the other long side to a third electrically conductive weft core that is adjacent to one another, viewed in the warp direction. As a result, the electrically conductive weft veins result in an electrical conductor that extends in a serpentine manner over the surface of the tissue.

The ionization device according to the invention also has many advantages. It is particularly suitable for use in filter systems and preferably z. B. in air filter systems, where by applying a high voltage, ionization and filtering takes place.

The ionization device according to the invention is equipped in particular with at least one electrode made of a fabric as described above.

In the ionization device, at least some warp wires can form a (first) electrode and at least some weft wires of the same fabric can form a second or other electrode.

At least one fabric of the ionization device can be shaped three-dimensionally and z. B. have a cylindrical shape. The fabric can be folded, folded, bent, rolled and/or pleated.

It is also possible to use the fabric described above as an architectural fabric. For this purpose, the fabric can be used as a facade element in a building or outside of a building. It can also be used as a room divider or privacy screen.

Other areas of application for the fabric include use as a filter or filter insert.

The fabric can also be used as a layer and in particular. used as an intermediate layer on or in a sandwich product.

Further advantages and possible applications of the invention result from the exemplary embodiment which is described below with reference to the enclosed figures.

• 1 eine schematische vergrößerte Ansicht eines erfindungsgemäßen Gewebes;
• 2 eine vergrößerte schematische Ansicht einer Schussader des erfindungsgemäßen Gewebes nach 1; und
• 3 eine Gesamtansicht des Gewebes nach 1.

Show in it:

• 1 a schematic enlarged view of a fabric according to the invention;
• 2 an enlarged schematic view of a weft vein of the fabric according to the invention 1 ; and
• 3 an overall view of the fabric 1 .

With reference to the 1 until 3 an embodiment of the invention will now be explained. This in 1 The fabric 1 shown in a highly schematic manner here has a fabric layer 4 which extends over a fabric section 14 with a fabric surface 12 .

The fabric 1 consists here of warp wires embodied as warp wires 2 and weft wires embodied as weft wires 3 . In doing so, as in 2 shown, each weft wire 3 and also each warp wire 2 consist of a monofilament 23 shown with solid lines with an insulation 5 surrounding the individual wire or the wire 16 . Or the weft wire 3 or the warp wire 2 consists of a multifilament 19, as shown in dashed lines in 2 is shown. This means that the multifilament 19 consists of a plurality of individual wires 16 which are brought together in the form of a wire bundle, a rope or as a stranded wire or in some other way and are surrounded by the outer insulation 5 .

The outer insulation has a radial thickness 25 which is required for reliable insulation enough. The fabric 1 is made with a plain weave and has open meshes 20, which are here embodied as a square mesh, but could also be embodied as a long mesh. The mesh size 26 between two wires is 3.5 mm in the illustrated embodiment, while the wire diameter or diameter 17 of the warp strands 2 and the weft strands 3 is about 1.5 mm. In another specific embodiment, the outer diameter of the weft strands is 1.5 mm, while the outer diameter 17 of the warp strands 2 is approximately 0.5 mm.

As 1 As can be seen, some weft veins 3 form an electrical conductor 13 which extends overall over a substantial part of the fabric surface 12 in an approximately S-shaped or serpentine manner, at the ends of which contacts 24 and 31 are provided for electrical connection.

The S-shaped electrical conductor 13 can, after weaving the fabric 1, e.g. This can be produced, for example, by always connecting two weft wires 3 to one another, viewed in the weft direction, so that on one long side 9 seen in the weft direction 15, a first weft wire 6 is connected to a second weft wire 8, which is arranged directly adjacent here in the warp direction 7, while the second weft wire 8 is connected to a third weft wire 10 on the other long side 11 of the fabric 1 . This means that weft wire 6 is connected to weft wire 8 on first longitudinal side 9 , while they are not connected on second longitudinal side 11 .

Furthermore, the weft wire 8 is connected to the weft wire 10 on the second longitudinal side 11, while the weft wires 8 and 10 are not connected to one another on the first longitudinal side 9. Such connections of the individual weft wires 6, 8 and 10 can be provided later after a normal weaving process. However, it is preferred that a weft wire 3 is passed through the warp wires 2, for example from the first longitudinal side 9, until the second longitudinal side 11 is reached. There the weft wire 3 is deflected and guided back through the warp wires 2 until it reaches the first long side 9, where it is deflected again and guided back to the first long side 9 through the warp wires 2, etc. Such a weaving process creates the in 1 fabric 1 shown with the corresponding pattern, in which several weft wires 6, 8 and 10 etc. have a total of a snake-shaped conductor 13 extending over a fabric section 14.

For electrical contacting and connection of the individual warp wires 2, a weft wire or a weft wire 32 can be woven into the fabric 1 without surrounding insulation and electrically conductively connected to the warp wires 2, which are also woven without insulation, for example.

It is possible not only to weave a weft vein 32 separately into the fabric 1, but also to weave several weft veins 32 into the fabric 1 at individual points or at periodic intervals.

Both the weft wires 3 and the warp wires 2 can be provided with an insulation 5 which preferably consists of silicone or has a silicone layer on the outside 18 .

Overall, the tissue 1 with the contacts 24 and 31 can serve as an electrode 22 .

In 3 an overall view of the tissue 1 is shown, which is provided with the electrodes 22, 36 for use on an ionization device. The fabric surface 12 of the fabric 1 has two fabric sections 14 which each extend over a length 29 . The two fabric sections 14 are spaced apart from one another in the longitudinal direction by a distance 30 .

At the two ends, the weft wires 2 protrude by a length 33, which is 25 mm in the selected exemplary embodiment. The lengths 29 here correspond to 206.5 mm and the distance 30 between the two fabric sections 14 corresponds to 50 mm. The width 27 of the fabric is 151.5mm. Other dimensions are also possible.

The upper tissue section 14 here serves as electrode 22 and the lower tissue section 14 serves here as electrode 36 of an ionization device, the upper electrode 22 being electrically connected to a power source via contacts 24 and 31 and the lower electrode 36 via contacts 34 and 35.

After the tissue has been produced, the two tissue sections 14 with the electrodes 22 and 36 can be folded over in the central area of the distance 30 and laid one on top of the other. Thus, the electrodes 22 and 36 in an ionization device e.g. B. for air filter systems and the like. For this purpose, the electrodes are connected to a high-voltage source and the fluid in the area of the electrodes 22 and 36, such as air, for example, is partially ionized so that cleaning takes place.

It is possible not only to provide two separate fabric sections 14 on a fabric 1, but it can also be provided even more tissue sections. It is also possible to electrically connect the individual warp strands 2 to one another via weft strands 32 that are woven in separately or individually. For electrical insulation, the finished fabric 1 can also be coated overall with an insulating layer. This then leads to the fact that the strands 6, 8 and 10 are surrounded by a first insulating layer 5 and are also surrounded by an additional insulating layer in the insulating coating. Furthermore, it is possible to use the fabric in liquids, since the individual warp veins 2 and weft veins 3 are sheathed. An additional outer coating can also take place in a silicone bath, for example, into which the finished fabric 1 is immersed.

In another preferred embodiment, the fabric 1 is used 1 as part of an ionization device, the warp wires 2 also being made of metal and being electrically connected to one another at the ends. In this embodiment, the weft strands 6, 8 and 10 serve as one electrode 22 and the warp strands 2 as another electrode 36. By applying a high voltage of between, for example, 1000 and 500 volts, and in one example 2000 volts, an electric field is created on the tissue 1. The High voltage causes a cold plasma to be created: in the tissue openings, creating free radicals. Odor-laden air passing through the fabric 1 is neutralized. This is also caused by the radicals, which attack and neutralize the bacteria, germs and other odorous substances in the air. In this example, the warp and weft wires have insulation made of silicone. This favors the generation of free radicals. The wire mesh 1 creates a high degree of flexibility. The wire mesh 1 can be rolled into a cylinder, or folded or folded over, etc. to obtain a desired three-dimensional structure.

For the electrical connection and contacting of the warp wires 2, it is also possible to weave in tinned wires as weft wires 32 and then to solder them to the warp wires 2.

In addition to the application and use in electrical applications, it is also possible to use the fabric 1 according to the invention in the area of chemicals, with the insulation then providing chemical protection.

The insulation 5 can also be used to protect the fabric from wear. The insulation 5 of the fabric 1 can provide wear protection if, for example, the fabric rubs against an object.

Furthermore, the fabric 1 according to the invention can also be used as an architectural fabric.

Overall, the insulation 5 achieves a volume build-up of the tissue in which the tissue thickness becomes thicker overall. The strength of the fabric also increases.

The fabric 1 can be used as a material insert, for example for a sandwich product, and it can be protected from connections by the "lotus effect" by a coating.

Reference List

1

tissue

2

warp wire, warp wire

3

weft vein, weft wire

4

fabric layer

5

insulation

6

weft vein, weft wire

7

warp direction

8th

weft vein, weft wire

9

long side

10

weft vein, weft wire

11

long side

12

tissue surface

13

director

14

tissue section

15

shot direction

16

Vein

17

diameter

18

outside

19

multifilament

20

open mesh

21

crossing point

22

electrode

23

monofilament

24

Contact

25

thickness

26

mesh size

27

Broad

28

overall length

30

Distance

31

Contact

32

shot vein

33

length

34.35

contacts

36

electrode

Claims (25)

Fabric (1) with a fabric layer (4) woven from warp veins (2) and weft veins (3), wherein at least the weft veins (3) consist at least partially of electrically conductive metal and are surrounded by electrical insulation (5), with an electrode is formed by weft cores, characterized in that a first electrically conductive weft core (6) is connected to a second electrically conductive weft core (8) that is adjacent as seen in the warp direction (7) only on one longitudinal side (9), while the second electrically conductive weft core ( 8) is only connected on the other long side (11) to a third electrically conductive weft wire (10) that is adjacent to one another, viewed in the warp direction (7), so that the electrically conductive weft wires (6, 8, 10) form a snake-like pattern over the fabric surface (12 ) resulting in extending electrical conductor (13). Tissue (1) according to claim 1 , wherein at least several of the weft veins (3) consist of a coherent vein (3) which is deflected on the two longitudinal sides (9, 11) in order to form the electrical conductor on a fabric section (14). Tissue (1) according to claim 1 or 2 , wherein at least one weft vein (3) consists of a monofilament (23). Tissue (1) according to claim 1 or 2 wherein at least one weft vein (3) consists of a multifilament (19), wherein the multifilament (19) consists in particular of a plurality of wires (16). Fabric (1) according to one of the preceding claims, wherein the warp wires (2) and the weft wires (3) have different properties and in particular consist of different materials and/or have different cross sections or diameters (17). Fabric (1) according to one of the preceding claims, wherein at least some warp strands (2) consist of plastic. Fabric (1) according to any one of the preceding claims, wherein at least some warp strands (2) consist at least partially of at least one metal. Fabric (1) according to one of the preceding claims, wherein at least some warp strands (2) are electrically conductively connected to one another. Fabric (1) according to any one of the preceding claims, wherein an electrode (36) is formed by warp wires (2). Fabric (1) according to one of the preceding claims, wherein the warp strands (2) have changing and in particular periodically changing properties in the weft direction (15). Fabric (1) according to one of the preceding claims, wherein the cross section of at least one warp and/or weft vein (2, 3) has a round or oval, triangular or polygonal, rounded or flattened cross section. Fabric (1) according to one of the preceding claims, wherein a thickness (25) of an insulation (5) of at least one warp and / or weft core (2, 3) is sufficient to even with an applied high voltage of a thousand or several thousand volts to provide adequate insulation. Fabric (1) according to one of the preceding claims, in which the material of the insulation (5) contains additives, in particular an anti-fungicide being contained or applied to the outside (18) and/or a lubricant being applied. Fabric (1) according to one of the preceding claims, wherein at least individual warp strands (2) differ in their colour. Fabric (1) according to one of the preceding claims, wherein an open fabric with open stitches (20) is present. Fabric (1) according to one of the preceding claims, comprising at least two fabric layers (4), it being possible for the individual fabric layers (4) to have different weaving parameters. Fabric (1) according to one of the preceding claims, wherein at least some crossing points (21) of the warp and weft strands (2, 3) are connected to one another, the insulation at the crossing points (21) preferably being glued, soldered or welded to one another. Fabric (1) according to one of the preceding claims, wherein at least one fabric layer (4) is calendered. Ionization device, in particular for air filter systems and the like, having a fabric (1) and two spaced-apart electrodes (22) which can be connected to a high-voltage source, characterized in that the fabric (1) comprises at least one electrode (22), characterized in that the Fabric (1) comprises at least one fabric layer (4) woven from warp veins (2) and weft veins (3), wherein at least the weft veins (3) consist at least partially of electrically conductive metal and are surrounded by electrical insulation (5), and that a first electrically conductive weft core (6) is connected to a second electrically conductive weft core (8) that is adjacent, seen in the warp direction (7), on only one longitudinal side (9), while the second electrically conductive weft core (8) is connected to one another in the warp direction ( 7) seen adjacent third electrically conductive weft core (10) is connected only on the other long side (11), so that d The electrically conductive strands (6, 8, 10) result in an electrical conductor (13) extending in a serpentine manner over the fabric surface (12). Ionization device according to the preceding claim, in which at least some warp wires form one electrode and at least some weft wires of the same fabric form another electrode. Ionization device according to one of the two preceding claims, wherein at least one fabric (1) is three-dimensionally shaped and z. B. has a cylindrical shape. Ionization device according to the preceding claim, wherein the fabric is folded and/or pleated. Use of a fabric (1) according to one of Claims 1 until 18 for use as architectural mesh. Use of a fabric (1) according to one of Claims 1 until 18 for use as a filter or filter insert. Use of a fabric (1) according to one of Claims 1 until 18 as a layer and in particular an intermediate layer on a sandwich product.

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