DE102009016380A1 - Woven fabric for use as e.g. filter insert in ionization device of air filter system, has three electric-conductive weft wires producing electrical conductor extending over fabric surface - Google Patents

Abstract

The fabric (1) has a weft wire (3) formed from electric-conductive metal and surrounded by an electrical insulation. A first electric-conductive weft wire (6) is connected with a second electric-conductive weft wire (8) at a longitudinal side (9). The second weft wire is connected with a third electric-conductive weft wire (10) at another longitudinal side (11), where the second- and third weft wires are seen in warp direction (7). The first-, second-, and third weft wires produce a serpent-shaped electrical conductor (13) extending over a fabric surface (12).

Description

The The present invention relates to a fabric, in particular a wire mesh, and a method for producing such a fabric, and the Use of such a fabric. The tissue according to the invention may in particular be part of an ionization device according to the invention be, or be used as part of such.

in the Various fabrics have become known in the art. typically, consists of a web of warp and weft veins. Made of metal Warp and weft veins are called warp and weft wires. typically, be for one Weaving the warp wires clamped and the weft wires are inserted in between shot, the weft wires depending on the desired Weave over or under the respective warp wires carried out become. The weft wires from the one long side shot in and cut off at the end, so all the warp wires and also all weft wires as single wires in contained the finished wire mesh.

adversely in the known wire mesh is that the warp and weft wires directly abut each other and become a direct mechanical and also electrically conductive contact of the warp and weft wires results.

It is therefore the object of the present invention, a tissue and a method of making a tissue available which is flexible and z. B. also used for electrical applications is.

These Task is solved by a fabric having the features of claim 1. The ionization device according to the invention especially for air filter systems and the like is subject matter of claim 19. Preferred embodiments are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the Embodiment.

The fabric according to the invention comprises at least one fabric layer woven from warp and weft threads, wherein at least the weft wires at least partially made of electric conductive metal exist and are surrounded by electrical insulation. At least a first electrically conductive Fire vein is only on one long side with a seen in the warp direction adjacent second electrically conductive Fire vein connected. The second electrically conductive vein of fire is just on the other long side with a third electrically adjacent one seen in the warp direction conductive vein of fire connected. As a result, the electrically conductive weft leads to a snake-shaped over the fabric area extending electrical conductor.

The fabric according to the invention has many advantages. A considerable advantage of the fabric according to the invention are the wreaths surrounded by the insulation, which through the Insulating layer are mechanically separated from the Kettadern. There is also an insulating protection to the outside out. This also ensures mechanical protection. Farther becomes an electrical contact protection to disposal posed. This makes the use of flexible possible. The back and forth extending electrical conductors allows a variety of applications and in particular also the use in ionization devices, which for example intended for use in air filter systems.

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

The Can shoots on the long sides the fabric individually be connected to each other.

It is possible, too, that each two or more Schussadern connected on both sides are and thus form a first group of Schussadern. This first Group of shot veins makes an electrically conductive connection from a long side of the tissue to the other longitudinal side of the fabric. A second group of shooting veins from one or the other several shot wires can in turn be electrically connected to each other on both sides be connected. At the second group of Schussadern can in In the warp direction turn connect a third group of weft wires. Now is again the first group with the second group only on one long side electrically connected while the second group with the third group only on the other long side is electrically connected u. s. w. This results in the first, second and third groups a serpentine extending electrical Ladder. The first is preferably parallel to the second and every other group.

Is possible It is also that between two one-sided or two-sided connected Schussadern still Schussadern are provided with no other weft conductors are electrically connected.

Preferably, the weft wires are deflected on the longitudinal sides and returned again. As a result, several or even all weft veins consist only of a total integral vein or a single continuous strand. The production is thereby simplified and it is achieved a homogeneous tissue.

advantageously, Therefore, at least several of the Schussadern consist of a coherent Vein, on the two long sides each deflected to rest on a tissue section of the tissue to form the electrical conductor.

In advantageous embodiments, at least one Kettader and / or Fire vein of a monofilament. It is also possible that at least a Kettader and / or weft vein consists of a multifilament. A multifilament may consist of individual fibers, threads or wires. The multifilament Can be designed as a strand or rope be.

In In all embodiments, the monofilament or multifilament one or more wires include. In a simple case, the weft veins are at least partly made of metal. For example, they may be considered by an insulating layer Surrounded wire performed be.

In preferred developments can the Kettadern and the Schussadern different characteristics and in particular consist of different materials and / or have different cross sections or diameters. Possible and preferred are also partially or completely the same properties Warp and weft veins.

In various embodiments can at least Some chain-links made of plastic. It is also possible that some Plastic shot veins are made.

Preferably at least some Kettadern at least partially consist of at least a metal. Possible It is also that the individual Kettadern from different Metals or materials.

advantageously, can also at least some Kettadern electrically conductive with each other be connected.

Preferably an electrode is formed by weft wires. For electrically conductive Kettadern can also be a (further) electrode formed by Kettadern become.

The Kettadern can seen in the weft changing and in particular periodically changing Have properties. For example, seen in the weft direction a first Kettader made of metal with an insulating layer, while the following Kettader is made of plastic. It is possible and preferred even if successive Kettadern in their optical surface property differ.

In all cases Is it possible, that at least some warp and / or Veining 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 even at an applied high voltage of a thousand or several thousand volts sufficient insulation to effect. This allows a flexible use.

In contains preferred embodiments the material of insulation additives or they are additives Outside applied to the insulation. In particular, an anti-fungicide included or on the outside can be applied. It can also applied a lubricant which should simplify the weaving process or which at the use of the fabric less abrasion in direct causes mechanical contact.

It is possible, that at least individual Kettadern and / or Schussadern in differ in their color.

In all applications The tissue can be made as an open-mesh tissue or as a tissue of tears be educated. The mesh size depends on the application.

advantageously, For example, the fabric may comprise at least two layers of fabric, with the individual ones Fabric layers may have different Webparamter. Especially the thickness of the warp and / or weft wires or weft wires for the various Fabric layers are different. Possible and preferred are also different cross sections, materials and weaves and the like. more.

In all configurations can at least some intersection points of the warp and weft veins with each other be connected, preferably the insulation at the crossing points especially glued together, soldered, welded or otherwise can be connected to each other.

The Tissue or at least one fabric layer can be calendered to be homogeneous To exhibit properties.

The ionization device according to the invention is provided 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 fabric comprises at least one electric de. The fabric comprises at least one fabric layer woven from warp and weft threads. At least the weft wires 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 is connected on the fabric surface only on one longitudinal side with a second electrically conductive weft wire viewed in the warp direction. The second electrically conductive weft wire is connected only on the other longitudinal side with a third electrically conductive weft wire viewed in the warp direction. As a result, the electrically conductive weft wires form a serpentine shape extending over the tissue surface electrical conductor.

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

The Ionization device according to the invention is in particular with at least one electrode from a previously equipped fabric described.

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

At least a tissue of the ionization device can be reshaped three-dimensionally be and z. B. have a cylindrical shape. The tissue can folded, folded over, bent over, rolled up and / or pleated.

Is possible also the use of the previously described fabric as architectural fabric. For this purpose, the fabric as Fassadenele ment in a building or outside a building be used. Possible is also the use as a room divider or privacy screen.

Other Applications of the fabric are the use as a filter or filter cartridge.

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

Further Advantages and applications The invention will become apparent from the embodiment, hereinafter will be described with reference to the accompanying figures.

In this demonstrate:

1 a schematic enlarged view of a fabric according to the invention;

2 an enlarged schematic view of a shot vein of the tissue according to the invention 1 ; and

3 an overall view of the tissue behind 1 ,

With reference to the 1 to 3 Now, an embodiment of the invention will be explained. This in 1 strongly illustrated tissue 1 here has a fabric layer 4 on that spread over a tissue section 14 with a tissue surface 12 extends.

The tissue 1 exists here as warp wires 2 executed Kettadern and as weft wires 3 running shot veins. It can, as in 2 shown, each weft wire 3 and also every warp wire 2 from a set with solid lines Darge monofilament 23 with a single wire or the wire 16 surrounding insulation 5 consist. Or the weft wire 3 or the warp wire 2 consists of a multifilament 19 as he dashed in 2 is shown. This means that the multifilament 19 from a plurality of individual wires 16 consists of, in the form of a wire bundle, a rope or as a strand or otherwise merged and from the outer insulation 5 be surrounded.

The outer insulation has a radial thickness 25 on, which is sufficient for reliable insulation. The tissue 1 is made with a smooth weave and has open stitches 20 on, which are executed here as a square mesh, but could also be executed as a long mesh. The mesh size 26 between two wires in the illustrated embodiment is 3.5 mm, while the wire diameter or diameter 17 the chain links 2 and the shot veins 3 about 1.5 mm. In a concrete other embodiment, the outer diameter of the Schussadern is 1.5 mm, while the outer diameter 17 the chain links 2 about 0.5 mm.

As 1 can be taken, form some Schussadern 3 a total of over a substantial portion of the tissue surface 12 approximately S-shaped or serpentine extending electrical conductor 13 , 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 z. B. be prepared by the fact that seen alternately in the weft direction always two Schussadern 3 be joined together, so on the one in firing direction 15 seen long side 9 an ers ter shot wire 6 with a second and here in the warp direction 7 directly adjacent arranged weft wire 8th is connected while on the other long side 11 of the tissue 1 the second weft wire 8th with a third weft wire 10 is connected. That means that on the first long side 9 the weft wire 6 with the weft wire 8th connected while on the second longitudinal side 11 unconnected.

Furthermore, on the second long side 11 the weft wire 8th with the weft wire 10 connected while on the first long side 9 the weft wires 8th and 10 are not connected. Such compounds of individual weft wires 6 . 8th and 10 can be retrofitted after a normal weaving process. But it is preferable that a shot vein 3 for example, from the first longitudinal side 9 out through the warp wires 2 is performed until the second long side 11 is reached. There is the weft wire 3 redirected and back through the warp wires 2 performed until he is the first long side 9 reached, where it is again deflected and the first longitudinal side 9 again through the warp wires 2 is brought back etc .. By such a weaving process arises in 1 represented tissue 1 with the appropriate pattern, where multiple weft wires 6 . 8th and 10 etc. in total a serpentine and over a tissue section 14 extending ladder 13 exhibit.

For electrical contacting and connection of the individual warp wires 2 can be a shot wire or a weft wire 32 without surrounding insulation in the tissue 1 be woven with and, for example, also without insulation interwoven Kettadern 2 be electrically connected.

It is possible, not just a vein of fire 32 separately with in the tissue 1 weave, but it can also be several shot veins 32 in individual places or at regular intervals in the tissue 1 to be woven.

It can both the weft wires 3 as well as the warp wires 2 with insulation 5 be provided, which preferably consists of a silicone or a silicone layer on the outside 18 includes.

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

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

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

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

After the preparation of the tissue, the two tissue sections 14 with the electrodes 22 and 36 in the middle range of the distance 30 folded over and placed on top of each other. Thus, the electrodes 22 and 36 in an ionization device z. B. for air filter systems and the like used. For this purpose, the electrodes are connected to a high voltage source and that in the area of the electrodes 22 and 36 located fluid such as air is partially ionized, so that a cleaning takes place.

It is possible, not just two separate tissue sections 14 on a fabric 1 provide, but it can also be provided more tissue sections. Furthermore, it is possible, the individual Kettadern 2 via separate or individually woven weft veins 32 electrically connect with each other. For electrical insulation, the finished fabric 1 total still be coated with an insulating layer. This then leads to the shot veins 6 . 8th and 10 from a first insulating layer 5 are surrounded and are surrounded in the insulating coating with an additional insulating layer. Furthermore, it is possible to use the tissue in liquids, since the individual Kettadern 2 and shot veins 3 are sheathed. An additional outer coating can also take place, for example, in a silicone bath into which the finished fabric 1 is immersed.

In another preferred embodiment, the tissue is used 1 out 1 as part of an ionization device, wherein the warp wires 2 are also made metallic and are electrically connected to each other at the ends. In this embodiment, the Schussadern serve 6 . 8th and 10 as an electrode 22 and the chain-links 2 as another electrode 36 , By applying a high voltage between z. B. 1000 and 500 volts and in one example 2000 volts creates an electric field on the tissue 1 , The high voltage causes the generation of a cold plasma in the tissue openings, creating radicals. Through the tissue 1 passing odorous air is neutralized. This is also caused by the radicals that attack and neutralize the bacteria, germs and other odorous substances from the air. Here in the example, the warp and weft wires have an insulation consisting of a silicone. This promotes the generation of radicals. Through the wire mesh 1 a high flexibility is generated. The wire mesh 1 can be rolled into a cylinder, or folded over or folded over, etc. to obtain a desired three-dimensional structure.

For electrical connection and contacting of the warp wires 2 It is also possible tinned wires as Schussadern 32 weave in and then with the Kettadern 2 to solder.

In addition to the use and the use in electrical applications, it is also possible, the tissue of the invention 1 in the field of chemicals, the insulation then providing chemical protection.

The insulation 5 Can also be used as wear protection of the fabric. Through the insulation 5 of the tissue 1 Wear protection can be generated, for example, when the fabric rubs against an object.

Furthermore, a use of the tissue according to the invention 1 also possible as architectural fabric.

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

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

1

tissue

2

Kettader, warp wire

3

Shot vein, weft wire

4

fabric layer

5

insulation

6

Shot vein, weft wire

7

warp

8th

Shot vein, weft wire

9

long side

10

Shot vein, weft wire

11

long side

12

fabric area

13

ladder

14

fabric section

15

weft direction

16

Vein

17

diameter

18

outside

19

multifilament

20

open mesh

21

intersection

22

electrode

23

monofilament

24

Contact

25

thickness

26

mesh

27

width

28

overall length

30

distance

31

Contact

32

shot Core

33

length

34 35

contacts

36

electrode

Claims (25)

Tissue ( 1 ) with one from Kettadern ( 2 ) and shot veins ( 3 ) woven fabric layer ( 4 ), whereby at least the weft threads ( 3 ) at least partially made of electrically conductive metal and of an electrical insulation ( 5 ), characterized in that a first electrically conductive weft ( 6 ) with a in the warp direction ( 7 ) seen adjacent second electrically conductive vein ( 8th ) only on one longitudinal side ( 9 ), while the second electrically conductive weft ( 8th ) with a in warp direction ( 7 ) seen adjacent third electrically conductive vein ( 10 ) only on the other long side ( 11 ), so that the electrically conductive weft wires ( 6 . 8th . 10 ) snakes over the tissue surface ( 12 ) extending electrical conductors ( 13 ). Tissue ( 1 ) according to claim 1, wherein at least several of the weft wires ( 3 ) from a connected vein ( 3 ) exist on the two long sides ( 9 . 11 ) is deflected in each case in order on a fabric section ( 14 ) to form the electrical conductor. Tissue ( 1 ) according to claim 1 or 2, wherein at least one shot wire ( 3 ) from a monofilament ( 23 ) consists. Tissue ( 1 ) according to claim 1 or 2, wherein at least one shot wire ( 3 ) from a multifilament ( 19 ), the multifilament ( 19 ) into particular of a plurality of wires ( 16 ) consists. Tissue ( 1 ) according to one of the preceding claims, wherein the Kettadern ( 2 ) and the fire veins ( 3 ) have different properties and in particular consist of different materials and / or different cross sections or diameters ( 17 ) exhibit. Tissue ( 1 ) according to one of the preceding claims, wherein at least some Kettadern ( 2 ) consist of plastic. Tissue ( 1 ) according to one of the preceding claims, wherein at least some Kettadern ( 2 ) at least partially made of at least one metal. Tissue ( 1 ) according to one of the preceding claims, wherein at least some Kettadern ( 2 ) are electrically connected to each other. Tissue ( 1 ) according to one of the preceding claims, wherein an electrode ( 22 ) by shooting veins ( 3 ) and an electrode ( 36 ) by Kettadern ( 2 ) is formed. Tissue ( 1 ) according to one of the preceding claims, wherein the Kettadern ( 2 ) in the weft direction ( 15 ) have changing and in particular periodically changing properties. Tissue ( 1 ) according to one of the preceding claims, wherein the cross section of at least one warp and / or weft ( 2 . 3 ) has a round or oval, triangular or polygonal, rounded or flattened cross-section. Tissue ( 1 ) according to one of the preceding claims, wherein a thickness ( 25 ) insulation ( 5 ) at least one warp and / or weft ( 2 . 3 ) is sufficient to cause sufficient insulation even at an applied high voltage of thousand or several thousand volts. Tissue ( 1 ) according to one of the preceding claims, wherein the material of the insulation ( 5 ) Contains additives, in particular containing an anti-fungicide or on the outside ( 18 ) and / or wherein a lubricant is applied. Tissue ( 1 ) according to one of the preceding claims, wherein at least individual Kettadern ( 2 ) differ in their color. Tissue ( 1 ) according to one of the preceding claims, wherein an open fabric with open mesh ( 20 ) is present. Tissue ( 1 ) according to one of the preceding claims, comprising at least two layers of fabric ( 4 ), whereby the individual fabric layers ( 4 ) may have different Webparamter. Tissue ( 1 ) according to one of the preceding claims, wherein at least some crossing points ( 21 ) of the warp and weft veins ( 2 . 3 ), wherein preferably the insulation at the crossing points ( 21 ) is glued together, soldered or welded. Tissue ( 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 with a tissue ( 1 ) and two spaced apart electrodes ( 22 ) connectable to a high voltage source, characterized in that the tissue ( 1 ) at least one electrode ( 22 ), characterized in that the tissue ( 1 ) at least one of Kettadern ( 2 ) and shot veins ( 3 ) woven fabric layer ( 4 ), wherein at least the weft threads ( 3 ) at least partially made of electrically conductive metal and of an electrical insulation ( 5 ), and that a first electrically conductive weft ( 6 ) with a in the warp direction ( 7 ) seen adjacent second electrically conductive vein ( 8th ) only on one longitudinal side ( 9 ), while the second electrically conductive weft ( 8th ) with a in warp direction ( 7 ) seen adjacent third electrically conductive vein ( 10 ) only on the other long side ( 11 ), so that the electrically conductive weft wires ( 6 . 8th . 10 ) snakes over the tissue surface ( 12 ) extending electrical conductors ( 13 ). Ionization device after the previous one Claim, wherein at least some warp wires an electrode and at least some weft wires of the same tissue form another electrode. Ionization device according to one of the two preceding claims, wherein at least one tissue ( 1 ) is converted three-dimensionally and z. B. has a cylindrical shape. Ionization device after the previous one Claim, wherein the tissue, wherein the tissue is folded and / or pleated is. Use of a fabric ( 1 ) according to one of claims 1 to 18 for use as architectural fabric. Use of a fabric ( 1 ) after one of claims 1 to 18 for use as a filter or filter cartridge. Use of a fabric ( 1 ) according to one of claims 1 to 18 as a layer and in particular intermediate layer on a sandwich product.