DE10157355A1 - Apparatus for disinfecting nondrinking water by means of UV radiation comprises a UV light guide provided with radiation outlet points within the water delivery line - Google Patents

Abstract

The apparatus (10) for disinfecting water used for purposes other than drinking and food preparation, by means of UV radiation comprises a UV light guide (18) which only within the water delivery line (12) is provided with one or more outlet points (32) for UV radiation.

Description

The invention relates to a device for disinfecting Process water using UV radiation according to the generic term of Claim 1.

A device with the features mentioned above is known for example from DE 196 18 771 A1. There is according to an embodiment with a water tap described an outflow opening that has at least one a valve line with a Supply connection is connected, being in the Line route arranged a UV radiation delivery device is. This UV radiation emitter is near the Outflow opening provided. The UV lamp is for example arranged in a wall fitting, the UV light via a Optical fiber within the line, e.g. B. a water hose and is arranged in the shower head. At the end of the light guide is an outlet arrangement is provided in the shower head, which the emerging light is distributed essentially radially. there a filter comprises the outlet arrangement for the UV light, which is also arranged in the shower head.

According to another embodiment, the UV light source even arranged in the shower head and covered by the filter. In in this case lead from the wall fitting through the hose electrical leads to the UV light source to use this with To supply operating energy. The tap, for example the shower head can be detached with a Line or the shower hose connected like this is common. Is very problematic with this well-known water extraction container, however, an exchange of the shower head, since then either the electrical lines  from the UV light source in the shower head or the light guide from the outlet arrangement for UV light in the shower head must or the exit arrangement with UV light source must be removed from the shower head. Furthermore, the the UV light source or exit arrangement remove comprehensive filters. This is for the user such a device is generally not reasonable because the replacement of the shower head as extremely complex and turns out to be complicated. There is also a risk that the user is electrocuted when remodeling receives or a new shower head or other tap not properly installed.

Another device is for example from the DE 39 06 891 A1 known.

In various areas of hot water supply, for example in residential units, hospitals and The like there are risks that are increased by the Emergence of germs, such as Legionella pathogens, can lead to problems. It was therefore already proposed by means of the central hot water supply intermittently the water temperature to values above for example to raise 60 ° C to such harmful bacteria to kill viruses. Then the temperature of the hot water is then again reduced to the usual values of 40 ° C to 50 ° C. Such methods for thermal disinfection, the Use of energy due to an increase in primary energy consumption of more than 20% is more questionable for example in DE 38 38 046 A1 or DE 39 19 939 A1 described. However, due to this thermal Procedure does not guarantee disinfection the one in the pipes near the tap Domestic water is carried out. For example, a Temperature increase in the hot water boiler of the heating system is not too  killing the organisms that are already there for example in the pipe network, in the fittings and / or in the Shower or shower hose of a shower system are there this hot water from the temperature increase in the The domestic hot water remains unaffected. This so-called post-contamination problem in the near of Leaves tap, hot water pipes for cost reasons alone, do not eliminate that one each of these lines in the immediate vicinity of the tap assigns a water disinfection facility like this known from DE 197 36 636 A1 with a Sterilization using UV light. Such disinfection devices are with control electronics, pressure transducer electronics, Activation of the UV lamp, solenoid valves and the like extremely complex and therefore very expensive. Rather, such facilities can be Use DE 197 36 636 A1 at best if it is one central hot water connection are connected, whereby then the hot water connections on the distribute individual taps. Here, however, occurs again the problem on that in the piping near the Tap water located due to the Post-contamination problem again with microorganisms, viruses, Can accumulate bacteria or the like.

To solve this problem it is according to the above DE 39 06 891 A1 provides that all pipeline parts of the Pipes in the area of the tap at the water wetted surfaces with a material with oligodynamic Effect, for example silver or copper, coated become. Under this oligodynamic effect, the germicidal effect of small amounts of a heavy metal or Heavy metal salt understood. However, this measure did the disadvantage that components of the material also in the Used water and problems with regard to this to the respective drinking water regulations, but also  caused with allergies. It is also exhausted Effect of the oligodynamic substances after some time due to of limescale or the like.

In contrast, the present invention has the object based on a device with the aforementioned Characteristics to the extent that a simple and disinfection achieved or contamination of the domestic water in that of the respective tap nearby areas of the service water pipe is avoided, the device in a simple manner should be manageable. In addition, the Device also for existing domestic water systems can be retrofitted without much effort.

This task is the device with the above characteristics mentioned essentially by the characteristics of Claim 1 solved. Because of the measure according to the invention, that the light guide or the UV radiation Only have exit points in the line that However, the light guide is not arranged in the tap itself the service water is already in the area of the pipe disinfected and reached due to the effect of UV radiation free from germs, bacteria, viruses or the like to the Tap, for example the shower or shower head or a tap. This is generally detachable with the line connected tap can be easily replace without interfering with the UV radiation system or the light guide by the end user or End users would have to be made. Otherwise results also the not to be underestimated advantage that conventional Shower or shower heads or taps on the Line can be connected and on Special designs of taps, which UV Radiation sources or UV Have radiation emitting devices are dispensed with  can. Of course, the exit points for the UV radiation at the end of the line in the connection area to the Shower or shower head come to rest so that the disinfectant UV radiation in the shower or shower head into radiation.

If in the context of the present application of UV radiation It is meant to include any radiation of one wavelength be understood that is suitable in the tummy tucks located germs, bacteria, viruses or the like kill. To this extent, radiation, for example in the optically visible or infrared range for use reach, if these are suitable, in the domestic water to kill germs or the like.

The device according to the invention has the advantage of a simple structure, because already existing but also new ones Containers, lines, for example shower hoses, Shower hoses or other leading to the tap Lines easily with such a light guide can be equipped. It's just worry about it wear that the connector for the light guide with the UV Radiation source comes into light-conducting contact. in this respect can the UV radiation source, for example, in one in the The housing provided near the hot water connection be housed, when connecting the line with the hot water connection automatically or via a separate coupling also the UV radiation source to the Connector for the light guide is coupled.

Complicated electronic measures, valve devices or The like is not necessary. Under the influence of the substantially over the length of the line on the in the UV radiation in the pipeline germs, bacteria, viruses and the like, which are if necessary, in the process water in the pipe stop, safely killed.  

According to an advantageous embodiment of the invention, it is provided that the service water connection side of the line Distributor housing, which for the hot water supply with the hot water connection and for the UV radiation supply is connected to the UV radiation source. It is preferably provided that the connector of the light guide liquid-tight through a wall of the distributor housing is led. In this respect, there is the possibility of using the Connector the UV radiation to the light guide and that Add service water to the pipe. Possibly. however it is also possible via that from the junction box led out connector the UV radiation source separately to connect to the connector.

The UV radiation source is particularly advantageous adjacent the hot water connection, preferably in a housing, in attached to a wall or the like and has one for Connector of the light guide corresponding connection on.

The light guide is particularly advantageous trained and has along the longitudinal extent within the line has a plurality of UV radiation exit points. For one, due to the flexible training of the Light guides, for example directly, in the flexible Shower or shower hose can be inserted. On the other hand becomes that in the hose or the pipe Process water due to the majority of the available UV Radiation exit points very evenly and intensely by the UV radiation, so that a very effective Disinfection of the immediate vicinity of the tap domestic water is guaranteed.

It has proven advantageous that the UV Radiation exit points essentially distributed,  in particular distributed essentially equally over the Longitudinal extension of the light guide within the line are arranged, the acting on the domestic water Radiant power over the axial extension of the line or the hose is distributed substantially homogeneously.

It is also advantageous that the light guide Means to extend the length of stay respectively to slow down or even out the Has flow velocity within the line, whereby the dwell time of the process water in the UV Radiation exit points increase and thus the effectiveness disinfection is improved. Possibly. can at an elevated Dwell time of the process water in the area of UV radiation Exit points also the intensity of the UV radiation source be reduced accordingly.

According to a preferred embodiment of the invention the light guide from a plurality, to a flexible chain pluggable, in particular essentially identical trained limbs. In this respect, the light guide can further the individual line or hose lengths be adapted and is therefore extremely flexible in the Handling.

A single link of the flexible chain preferably has that Form a disc on top with multiple through holes is provided for the domestic water. Already through this Measure will also extend the length of stay or slowing the leveling of the Flow velocity within the line reached because the free internal cross-section of the hose or line is reduced. A single link of the flexible chain points one reduced compared to the inside diameter of the line Outside diameter, being directed radially outwards Bridges, wings or the like are arranged on the link.  

These wings or webs can if necessary on the inner wall support the pipe or hose so that the Process water on the one hand through the through holes of the Disc and the other through the free areas between the Circumference of the disc, the webs, wings or the like and the inner wall of the pipe or pipe can step through. This measure also means that flexible chain trained light guides within the line or guided or held by the hose.

According to a preferred embodiment of the invention, the Link of the flexible chain, carrying a ball head Web, pin or the like on, for example, the Top of the disc is arranged. On the bottom of the Washer is a locking ball seat for a ball head of the adjacent link provided. The ball holder is formed such that they are slightly more than a 180 ° range of the ball head and a slight opening Has constriction due to the elasticity of the Material from which the link consists, over the ball head snaps and locks this in the ball holder. On this way you can choose from a plurality or multiplicity of such links a flexible chain, to any and also adapted to the respective application individual length.

The link is preferably in one piece, in particular Plastic molded part, for example injection molded part and preferably consists of PMMA (polymethyl methacrylate), PC (Polycarbonate) or a quartz material. In particular comes such a material used, which good has light-conducting properties in relation to UV radiation and is characterized by high aging and UV resistance distinguished.  

According to another advantageous embodiment of the invention the light guide consists of a variety of Fiber optic cables that prefer one end over one, one A plurality of through holes Light distribution plate with the connector in UV light-conducting connection. The multitude of Fiber optic cables are attached to the light distribution plate and held, the light distribution plate service water connection side in the line, preferably the Cross-section of the line covering is arranged. The water then passes through a plurality of in the light distribution plate provided through holes in the line. The Connection piece for feeding the UV radiation is with the Light distribution plate in light-conducting connection.

The glass fiber cables preferably have one another different lengths, the UV radiation Exit points at the other end of the fiber optic cable at their other free ends are provided and at least one Partial area, preferably over the entire area of Distributed longitudinal extension of the line, extend. in this respect are the multitude of fiber optic cables with different Lengths equipped so that the UV radiation over part the fiber optic cable is already short downstream of the Light distribution plate emerges. Show other fiber optic cables a longer length, with the UV radiation then exits in a central area of the line, for example and a number of other fiber optic cables still have one greater length, so that the UV radiation in one downstream end of the line emerges. The lengths the glass fiber cables are preferably selected so that the UV Radiation essentially homogeneous or equally distributed over the axial extension of the line to the process water acts. Due to the multitude of inside the line fiber optic cable is not only a narrowing of the Flow cross-section of the line and thus one  Slowdown in flow velocity respectively an extension of the duration of the domestic water in the Range of fiber optic cables, but the variety of Fiber optic cables also ensure that the Flow profile within the conduit.

According to a further advantageous embodiment of the invention the light guide consists of one or a few Fiber optic cables that extend essentially across the entire Extend the length of the line and one end with the connector are in UV light-conducting connection and preferred at the other end in the area of the free, downstream end of the Are fixed via a linkage. So that's one or the few fiber optic cables are fixed, d. H. within attached to the line between their free ends or even slightly tense.

So that the UV radiation guided through the light guide is relative evenly to the hot water in the pipe can act on the light guide or one or the few fiber optic cables a variety of Balls, preferably consisting of quartz glass, PMMA, PC or the like, lined up like a chain. The balls act as Exit points for UV radiation from the fiber optic cable, due to the spherical radiation of the spheres extremely intense and homogeneous radiation of the in the line domestic hot water is guaranteed with UV radiation.

Advantageously, the balls have one over Slightly reduced inside diameter of the line Outside diameter so that the balls not only as Exit points for UV radiation, but also for Homogenization or homogenization or Slowing the flow of domestic water within the Serve the line. To this extent, the process water flows along the between the outer circumference of the balls and the inner wall of the  Line formed annular gap downstream to the Tap, for example the shower or shower head or like.

The balls are preferably the light guide or the Melted fiber optic cable, glued to it or by means of Holes the light guide or fiber optic cable threaded. What is important in the chosen technique is alone that an effective transfer of UV radiation from the Light guide or fiber optic cable on the balls as Exit points is guaranteed.

According to a further advantageous embodiment of the Invention, the light guide consists of a variety of Glass fiber cables, a plurality of disks are kept at a distance. These discs are based at least partially on the advantage Inner wall of the tube or ear by the light guide is recorded. The light is on one end of the Optical fiber is fed and occurs preferably in the area of Washers out on to the pipe or pipe flowing fluid to act.

The disks preferably have a plurality of through holes, the fiber optic cable the discs in the form of a Glass fiber bundle, preferably essentially in the middle or centric, penetrating. Because of the in the slices provided one or more through holes Dwell time of the flow through the pipe or the line Liquid in the area of the light guide increases, as it were meandering conditions are created. Advantageous the fiber optic cable penetrates the panes in the form of a Glass fiber bundle essentially in the center or in the center, see above that the glass fiber bundle is essentially in the middle of the line is arranged and the liquid flowing through the line  exposed to light substantially uniformly becomes.

It is particularly advantageous to have an independent one Idea of the invention, which is also independent of the others Embodiments can be carried out, provided one or several optical fibers of the fiber optic cable respectively Fiber optic bundle lead out of this and preferably over the free forehead light on one or more of the disks radiate. To that extent it is for an extremely even Exposure to light on the line or pipe flowing fluid.

It has proven advantageous that the led optical fibers preferably with the free ends pierce the panes or on these panes are fixed.

The surfaces of the pane itself are preferably mirrored, so that's out of the optical fibers emerging light is reflected between adjacent panes can be. There is also the possibility of changing the surface of the To structure the disc like a prism, especially one To provide microstructuring, on the one hand the lotus Effect and on the other hand the Fresnell effect of the light flow be reinforced.

This is particularly advantageous from what is brought out Optical fibers or emerging from the glass fiber bundle itself Light of a light reflection at least between two subject to adjacent panes. Unless the disks themselves are at least partially translucent, such Light reflection between three or more panes occur.  

Finally, it has proven advantageous from a mechanical point of view proved that the distance between adjacent disks by Spacer is adjustable, preferably with the central one Glass fiber cables or fiber bundles are connected. It is also possible to change the distance between adjacent discs equidistant or irregular adjust. The individual distance selection is the respective Adapt operating conditions.

According to an independent advantageous embodiment the invention, a chamber is arranged in the line through which process water flows through, the Light guide is applied to the chamber with UV radiation. The UV Radiation is spread over the entire area by means of the optical fibers Length of the line, for example the shower hose, forwarded to a so-called disinfection head, which the front free end of the light guide or the Optical fiber is attached. The process water will positively guided by this disinfection head respectively the chamber via inlet openings and outlet openings passed through and inevitably the UV light exposed which from the free end of the light guide exit. At the bottom of the chamber or Disinfection head the water comes out again and flows through the line to the tap.

According to an advantageous embodiment, a is in the line essentially pot-shaped sleeve defining the chamber arranged between the outer wall and the inner wall of the Line an annular gap is formed.

It has proven advantageous that the Light guide connected to the sleeve, preferably by means of a end cap inserted into the chamber of the sleeve or is pressed.  

The sleeve itself advantageously has upstream Water inlets and downstream Water outlet openings, which are preferred over the circumference the sleeve are arranged offset from one another.

According to another embodiment of the invention Annular gap between water inlet openings and Water outlet openings preferably by means of a seal, z. B. O-ring, closed.

To enhance the effect of UV radiation, a Another embodiment provided the chamber or sleeve reflect away.

To make the UV radiation as lossless as possible completely from the light guide into the chamber respectively Initiate sleeve, it is provided that the light guide its head end protruding into the chamber or sleeve has a polished surface.

Further goals, advantages, features and possible applications of the present invention result from the following Description of the exemplary embodiments with reference to the drawings. All of them are described and / or illustrated presented features for themselves or in any more meaningful Combining the subject of the present invention, too regardless of their summary in the claims or their dependency.

Show it:

Fig. 1 shows a first embodiment of the invention

Fig. 1a: sectional view taken along the section line shown in Fig 1b.

FIG. 1b is a rear view of the device according to Fig. 1a,

Fig. 1c shows a side view of the device according to Fig. 1b,

Fig. 1d a single member of the light guide in a side view,

Fig. 1e shows a view of the link of Fig. 1d along the section line AA,

Fig. 1f, g are perspective views of the member of Fig. 1d,

Fig. 2 shows another embodiment of the device according to the invention

FIG. 2a is a view of the device according to Fig. 2b along section line CC,

FIG. 2b shows a rear view of the device according to Fig. 2a,

Fig. 2c is a side view of the device according to Fig. 2b,

Fig. 2d is a perspective view of the light guide of Fig. 2a, b, c, with a diffuser plate,

Fig. 3 shows a further embodiment of the device according to the invention,

Fig. 3a shows a section through the device of Fig. 3b along the section line DD,

FIG. 3b is a rear view of the apparatus of Fig. 3a,

Fig. 3c is a side view of the device according to Fig. 3b,

Figure 3d is a perspective view of the light pipe with fiber optic cables and pearly strung balls according to Fig. 3a, b., C,

Fig. 4 shows another embodiment of a device according to the invention with a modified light guide and

Fig. 5 shows another embodiment of the invention with a chamber through which the process water flows in a forced manner and which is exposed to UV light.

The device 10 shown in FIGS. 1 to 3 for the disinfection of waste water by means of UV radiation in a domestic water leading, preferably flexible conduit 12 is formed as a light guide 18 for UV radiation and accommodated in the interior of the flexible conduit 12 substantially over their longitudinal extent, , The flexible line 12 can be designed, for example, as a hose, shower hose or the like, which connects the process water connection 14 , for example a fitting, a shut-off device, a mixer tap or the like, and the tap 16 , for example a shower or shower head, a tap or the like combines. In the area of the process water connection 14 , a connection piece 20 is also provided for feeding UV light from a UV radiation source 22 into the light guide 18 . On the process water connection side, the line 12 has a distributor housing 24 which is connected to the process water supply 14 for the process water supply and to the UV radiation source 22 for the supply of UV radiation.

According to a preferred embodiment, the connector 20 of the light guide 18 is guided liquid-tight through a wall 26 of the distributor housing 24 . However, there is also the possibility of guiding the light guide 18 concentrically through the distributor housing 24 to the UV radiation source 22 provided, for example, on a wall. The type of supply of the UV radiation to the light guide 18 also strongly depends on whether such a device 10 is retrofitted in an already existing service water system or is already included in the planning of a new service water system. If the UV radiation groove 22 is arranged adjacent to the process water connection 14 , preferably in a housing 28 or in a wall or the like, it is expedient to have a connection 13 corresponding to the connector 20 of the light guide 18 in the housing or in the wall, preferably adjacent to the Process water connection 14 or combined with this, to provide. The light guide 18 itself is preferably flexible, so that it can adapt, for example, to the bends of an equally flexible shower or shower hose during use. Furthermore, the light guide 18 extends along the longitudinal extent within the line 12 and has a plurality of UV radiation exit points 32 along this longitudinal extent. The UV radiation exit points 32 are essentially distributed, in particular essentially equally distributed over the longitudinal extent of the light guide 18 within the line 12 . The light guide 18 can also have means 34 for extending the length of stay or for slowing down or evening out the flow rate of the process water within the line 12 .

According to the embodiment of FIG. 1, the light guide 18 consists of a plurality, matable to a flexible chain 38, in particular substantially identically shaped members 36. Each link 36 of this chain 38 of the light guide 18 has essentially the shape of a disk 40 , which is provided with a plurality of through bores 42 for the process water. The link 36 has an outer diameter that is reduced compared to the inner diameter of the line 12 and, in one embodiment, is provided with webs, wings 44 or the like directed radially outward. Taking into account the preferably provided webs, wings 44 or the like, the link 36 has such an outer diameter which essentially corresponds approximately to the inner diameter of the line 12 or the hose. Each link 36 has on one side, for example on the upper side, a web carrying a ball head 48 , pin 50 or the like and on the other side, for example on the underside, has a detenting ball receptacle 52 for a ball head 48 of the adjacent link 36 .

Each link 36 is designed as a preferably one-piece, in particular plastic molded part, for example an injection molded part, and preferably consists of PMMA, PC or quartz material or the like. These links 36, which are locked together to form the movable chain 38 , are introduced into the line 12 , the UV radiation being fed into the upstream end of this chain 38 by means of the connector 20 . The UV radiation is transmitted through each link 36 via the disk 40 , the pin 50 and ball head 48 to the disk of the next link 36 to the last link 36 downstream. The material of the links 36 of this chain acts as a light guide, the UV radiation being emitted essentially homogeneously over the longitudinal extension of the line 12 via disks 40 .

The latching connection between the individual members 36 is advantageously formed without large contact resistances for the UV radiation and accordingly has no or at most the smallest gaps or air pockets or the like. The hollow chambers for the process water formed between the individual members 36 , in particular the disks 40 , in combination with the through bores 42 and / or the vanes 44 serve to retard or even out the flow rate in order to keep the process water as long as possible in the UV radiation Ensure interior of line 12 .

According to the embodiment according to FIG. 2, the light guide 18 consists of a multiplicity of glass fiber cables 54 , which at one end are preferably connected to the connector 20 in a UV light-conducting connection via a light distribution plate 58 having a plurality of through bores 56 . The glass fiber cables 54 have a different length. The UV radiation exit points 32 at the other free end of the glass fiber cables 54 are arranged at least over a partial area, preferably over the entire area of the longitudinal extension of the line 12 , preferably equally distributed. Thus, for this embodiment of the light guide 18, an essentially homogeneous UV radiation of the process water located in the line 12 is ensured. The through holes 56 in the light distribution plate and also the relatively homogeneous glass fiber cables 54 distributed over the cross-section of the line 12 also ensure homogenization or reduction of the flow rate and thus a long residence time of the process water in the UV-irradiated room. The advantage of this embodiment of the light guide 18 also consists in the fact that the flexibility of the line 12 or the hose remains ensured overall due to the flexibility of the glass fiber cables 54 and that the light wavelength fed in does not change due to refraction. As an alternative to this, provision could also be made to hang a single spliced-on glass fiber cable into the interior of the line 12 , the individual spliced-on fibers having different lengths distributed over the reaction space, so that this also provides optimal illumination of the entire reaction space. A disadvantage of this alternative embodiment, however, could be that the flow of process water can detach glass fiber particles from the glass fiber cable, which under certain circumstances could reach the human skin via the tap or, for example, the user's eye. In this respect, the embodiment according to FIG. 2 using a plurality of glass fiber cables 54 is preferred.

According to a further alternative embodiment ( Fig. 3), the light guide 18 consists of a single or a few fiber optic cables 60 , which extend substantially over the entire length of the line 12 , one end with the connector 20 in UV light-conducting connection and the other end in Area of the downstream end of the line 12 are fixed via a linkage 62 , as shown in Fig. 3. A plurality of balls 64 , preferably consisting of quartz glass, PMMA, PC or the like, are lined up in a chain-like manner on the light guide 18 or the glass fiber cable 60 . These balls 64 serve as exit points 32 for the UV radiation. Furthermore, the balls 64 have an outer diameter which is slightly reduced compared to the inner diameter of the line 12 , so that this also achieves a smoothing or slowing down of the flow rate of the process water through the line 12 . The balls 64 are either melted or glued to the light guide 18 or the fiber optic cable 16 or threaded onto the light guide 18 or fiber optic cable 60 by means of bores.

In the further embodiment according to FIG. 4, an optical fiber or glass fiber bundle 56 is provided, which consists of a plurality of glass fiber cables 54 as light guide 18 . A plurality of disks 68 which are held at a distance are also fastened to the light guide 18 . The disks 68 have a plurality of through bores 70 , the glass fiber cable 54 penetrating the disks 68 in the form of a glass fiber bundle 66 , preferably essentially in the center or in the center. One or more individual optical fibers 72 of the glass fiber cable 54 or glass fiber bundle 66 are led out of the latter and preferably radiate light onto one or more of the panes 68 via the free ends. The optical fibers 72 that are led out preferably pierce the disk 68 with the free ends or are otherwise fixed to this disk 68 .

The surface 74 of the pane 68 is mirrored and / or structured like a prism, in particular microstructured. These measures are intended to strengthen or utilize the lotus effect and / or fesnell effect of the light control.

Furthermore, it is provided that the light emerging from the optical fiber 72 or the optical fiber 72 or from the glass fiber bundle 66 itself is subjected to a light reflection 76 at least between two adjacent panes 68 . The distance 78 between adjacent disks 68 can be adjustable by spacers.

This so-called light distribution backbone, consisting of the light guide fiber bundle or glass fiber bundle 66 and disks 68 held at a distance, provides for an ideal irradiation of the space between two due to the optical fibers 72 emitting light emitting between the disks 68 and the mirrored or microstructured surfaces of the disk 68 or several of these disks 68 , so that an optimal illumination of the liquid flow between two or more disks 68 is ensured and an effective disinfection of the service water is ensured.

According to the embodiment shown in FIG. 5, it is provided that a chamber 82 is arranged in the line 12 , through which the process water flows in a forced manner, the light guide 18 acting on the chamber 82 with UV radiation.

In particular, an essentially pot-shaped sleeve 84 defining chamber 82 is arranged in line 12 . An annular gap 92 is formed between the outer wall of the sleeve 84 and the inner wall of the line 12 . The light guide 18 is connected to the sleeve 84 , preferably by means of an end cap 80 , which is inserted or pressed into the chamber 82 of the sleeve 84 . The sleeve 84 has upstream water inlet openings 88 and downstream water outlet openings 90 which are arranged offset with respect to one another over the circumference of the sleeve 84 . The annular gap 92 between the water inlet openings 88 and the water outlet openings 99 is by means of a seal 86 , for. B. an O-ring, closed. Furthermore, it may be appropriate for the chamber 82 or sleeve 84 to be mirrored.

It is also provided that the light guide 18 has a polished surface 94 on its head end projecting into the chamber 82 or sleeve 84 .

In this embodiment according to FIG. 5, the UV radiation is forwarded by means of the light guide 18 over the length of the entire line 12 or the shower hose into a chamber 82 or a disinfection head which is attached to the front surface of the free end of the light guide 18 . The water is forcibly guided through the water inlet opening 88 and the water outlet openings 90 through the chamber 82 , since the annular gap 92 is closed by means of the seal 86 , which is positioned in the region between the water inlet openings 88 and the water outlet openings 90 . The process water therefore flows in a forced manner through the chamber 82 and is therefore also inevitably exposed to UV radiation.

The advantage of all the embodiments is that the light guides 18 can be introduced into existing containers, lines 12 or hoses and that new constructions, for example a shower or shower hose or the like, do not have to be used. The device according to the invention ensures that the service water in the line 12 is disinfected, the constructional and costly outlay for retrofitting, but also for new installation, being relatively low.

LIST OF REFERENCE NUMBERS

10

contraption

12

management

14

Water connection

16

tap

18

optical fiber

20

connector

22

UV radiation source

24

distributor housing

26

wall

28

casing

30

Connection

32

exit site

34

medium

36

element

38

Chain

40

disc

42

Through bore

44

wing

46

spigot

48

ball head

50

spigot

52

Ball head mount

54

Fiber Optic cable

56

Through bore

58

Light distribution plate

60

Fiber Optic cable

62

linkage

64

Bullet

66

glass fiber bundle

68

disc

70

Through Hole

72

optical fiber

74

surface

76

light reflection

78

distance

80

cap

82

chamber

84

shell

86

poetry

88

Water inlet opening

90

Water outlet

92

annular gap

94

area

Claims (31)

1. Device ( 10 ) for the disinfection of process water by means of UV radiation with a process water-carrying, in particular flexible line ( 12 ), for example a hose or shower hose, which has a process water connection ( 14 ), for example a fitting, a shut-off device, a mixer tap and a tap ( 16 ), for example connecting a shower or shower head or a tap, with a light guide ( 18 ) for UV radiation, which is arranged in the interior of the line ( 12 ), and with one in the area of the process water connection ( 14 ) arranged connector ( 20 ) for feeding UV light from a UV radiation source ( 22 ) into the light guide ( 18 ), characterized in that the light guide ( 18 ) only within the line ( 12 ) one or more UV radiation Has exit points ( 32 ). 2. Device according to claim 1, characterized in that the service water connection side of the line ( 12 ) has a distributor housing ( 24 ) which is connected to the process water supply for the process water supply ( 14 ) and for the supply of UV radiation to the UV radiation source ( 22 ) , The connection piece ( 20 ) of the light guide ( 18 ) preferably being guided liquid-tight through a wall ( 26 ) of the distributor housing ( 24 ). 3. Apparatus according to claim 1 or 2, characterized in that the UV radiation source ( 22 ) adjacent to the process water connection ( 14 ), preferably in a housing ( 28 ), in a wall or the like and one to the connector ( 20 ) of the Light guide ( 18 ) has the corresponding connection ( 30 ). 4. Device according to one of the preceding claims, characterized in that the light guide ( 18 ) is flexible and has a plurality of UV radiation exit points ( 32 ) along the longitudinal extent within the line ( 12 ). 5. The device according to claim 4, characterized in that the UV radiation exit points ( 32 ) are substantially distributed, in particular substantially equally distributed over the longitudinal extent of the light guide ( 18 ) within the line ( 12 ). 6. Device according to one of the preceding claims, characterized in that the light guide ( 18 ) has means ( 34 ) for extending the length of stay or for slowing down or evening out the flow rate of the process water within the line ( 12 ). 7. Device according to one of the preceding claims, characterized in that the light guide ( 18 ) consists of a plurality, to a flexible chain ( 38 ) which can be plugged together, in particular essentially identical links ( 36 ). 8. The device according to claim 7, characterized in that a link ( 36 ) has substantially the shape of a disc ( 40 ) which is provided with a plurality of through holes ( 42 ) for the process water. 9. Device according to one of claims 7 or 8, characterized in that the link ( 36 ) has a reduced outer diameter compared to the inner diameter of the line ( 12 ) and has radially outwardly directed webs, wings ( 44 ) or the like. 10. The device according to one of claims 7 to 9, characterized in that the link ( 36 ) on one side has a, a ball head ( 48 ) supporting web, pin ( 50 ) or the like and on the other hand a detenting ball receptacle ( 52 ) for a ball head ( 48 ) of the adjacent link ( 36 ). 11. The device according to one of claims 7 to 10, characterized characterized in that the link as a one-piece, especially plastic molding, for example Injection molded part, is formed and preferably consists of PMMA, PC or a quartz material. 12. Device according to one of the preceding claims 1 to 6, characterized in that the light guide ( 18 ) consists of a plurality of glass fiber cables ( 54 ), which at one end preferably has a light distribution plate ( 58 ) having a plurality of through holes ( 56 ) the connector ( 20 ) are in a UV light-conducting connection. 13. The apparatus according to claim 12, characterized in that the glass fiber cables ( 54 ) have different lengths and the UV radiation exit points ( 32 ) at the other end of the glass fiber cables ( 54 ) at least over a portion, preferably over the entire area of the longitudinal extension of the line 12 ) are distributed, in particular essentially equally distributed. 14. Device according to one of the preceding claims 1 to 6, characterized in that the light guide ( 18 ) consists of a single or a few glass fiber cables ( 60 ) which extend substantially over the entire length of the line ( 12 ), one end with the The connection piece ( 20 ) is in a UV light-conducting connection and is preferably fixed at the other end in the region of the downstream end of the line ( 12 ) via a linkage ( 62 ). 15. The apparatus according to claim 14, characterized in that on the light guide ( 18 ) or the glass fiber cable ( 60 ) a plurality of balls ( 64 ), preferably consisting of quartz glass, PMMA, PC or the like, are lined up in a chain. 16. Device according to one of claims 14 or 15, characterized in that the balls ( 64 ) have an outer diameter which is preferably slightly reduced compared to the inner diameter of the line ( 12 ). 17. Device according to one of claims 15 or 16, characterized in that the balls ( 64 ) the light guide ( 18 ) or the fiber optic cable ( 16 ) melted, glued or threaded through holes, the light guide ( 18 ) or fiber optic cable ( 16 ). 18. Device according to one of claims 1 or 6, characterized in that the light guide ( 18 ) consists of a plurality of glass fiber cables ( 54 ) and on the light guide ( 18 ) a plurality of spaced disks ( 68 ) are attached or arranged , 19. The apparatus according to claim 18, characterized in that the disc ( 68 ) have a plurality of through bores ( 70 ), the glass fiber cable ( 54 ) preferably penetrating the discs ( 68 ) in the form of a glass fiber bundle ( 66 ) substantially in the center or center. 20. Device according to one of claims 18 or 19, characterized in that one or more optical fibers ( 72 ) of the glass fiber cable ( 54 ) or glass fiber bundle ( 66 ) are led out of this and preferably light via the free ends on one or more of the disks ( 68 ) blast. 21. The apparatus according to claim 20, characterized in that the optical fibers ( 72 ) are preferably pierced with the free ends of the disc ( 68 ) or fixed to this disc ( 68 ). 22. Device according to one of the preceding claims, characterized in that the surface ( 74 ) of the disc ( 68 ) is mirrored and / or structured like a prism, in particular is microstructured. 23. Device according to one of the preceding claims 18 to 22, characterized in that the light emerging from the optical fibers ( 72 ) from the glass fiber bundle ( 66 ) itself is subjected to light reflection ( 76 ) at least between two adjacent panes ( 68 ). 24. Device according to one of the preceding claims 18 to 23, characterized in that the distance ( 78 ) between adjacent disks ( 68 ) is adjustable by spacers. 25. Device according to one of the preceding claims, characterized in that in the line ( 12 ) a chamber ( 82 ) is arranged through which the process water flows in a forced manner, and the light guide ( 18 ) acts on the chamber ( 82 ) with UV radiation , 26. The device according to claim 25, characterized in that the chamber is arranged (82) defining sleeve (84) in the conduit (12) is substantially cup-shaped, between the outer wall and the inner wall of the conduit (12) an annular gap (92 ) is formed. 27. The apparatus according to claim 26, characterized in that the light guide ( 18 ) connected to the sleeve ( 84 ), preferably by means of an end cap ( 80 ) in the chamber ( 82 ) of the sleeve ( 84 ) is inserted or pressed. 28. The apparatus according to claim 26 or 27, characterized in that the sleeve ( 84 ) upstream water inlet openings ( 88 ) and downstream water outlet openings ( 90 ), which are preferably offset from one another over the circumference of the sleeve ( 84 ). 29. Device according to one of the preceding claims 26 to 28, characterized in that the annular gap ( 92 ) between the water inlet openings ( 88 ) and the water outlet openings ( 90 ) preferably by means of a seal ( 86 ), for. B. O-ring is closed. 30. Device according to one of the preceding claims 25 to 29, characterized in that the chamber ( 82 ) or sleeve ( 84 ) is mirrored. 31. Device according to one of the preceding claims 25 to 30, characterized in that the light guide ( 18 ) has a polished surface ( 94 ) on its head end projecting into the chamber ( 82 ) or sleeve ( 84 ).