DE7634793U1 - DEVICE FOR DESTININATING A LIQUID WITH A ROD-SHAPED UV EMITTER - Google Patents

Description

Alois Loher _ηΚ τ 1976

Valley view 16 ^{at <}

8451 Haselmühl

PA 105

Device for sterilizing a liquid with a rod- shaped UV lamp

The invention relates to a device for disinfecting a liquid, in particular water, mLt of an irradiation chamber, which is provided with an inlet opening and an outlet opening for the liquid, and with a UV radiator, the UV radiation of which enters the irradiation chamber via a radiation inlet surface and the liquid there interspersed.

It has long been known that especially short-wave UV radiation effectively destroys all microorganisms such as bacteria, viruses, spores, yeasts, algae, protozoa and molds. UV lamps are therefore used for irradiating and disinfecting air and liquids to prevent rot and spoilage to prevent and prevent human and animal infections.

From the Osram brochure "Disinfection and Ozone Emitters", List E, December 1973, in particular Fig. 8 on page 6, the above-mentioned device for disinfecting a liquid is known. It can be used for quick and safe disinfection of swimming pool water or used for aquarium disinfection. It concerns thereby xun a flow device, which in continuous operation is operated and can therefore sterilize large amounts of water per unit of time. It consists of an outer tube with a Inlet and outlet openings at diagonally located end points and a rod-shaped one arranged concentrically in the tube

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UV emitter. The two ends of the tube are tapered and closed by the connection base of the UV lamp. The irradiation chamber is formed by the inner wall of the tube, the two tapered ends including the connection socket and the surface of the rod-shaped UV radiator . The radiation inlet area is specified here by the surface of the cylindrical UV radiator itself.

With the known device it is only possible with difficulty or not at all to remove the UV radiator from the irradiation chamber and cleaning its surface, i.e., the radiation inlet face. Such cleaning is but often necessary because dirt particles carried along by the liquid are deposited on the radiation inlet surface or because streaks form there, which can considerably reduce the radiation output effective for disinfection.

The object of the invention is to design the aforementioned device for disinfecting a liquid so that a through the liquid caused contamination of the radiation inlet surface is largely reduced.

This object is achieved in that in the Irradiation chamber a cleaning device is arranged, which flows through the irradiation chamber under the action of Liquid in physical contact with the radiation inlet surface can be moved over the same.

The cleaning device provides an automatic mechanical Cleaning the radiation inlet surface. In principle, it can be designed as a scraping, scratching, brushing, sweeping or polishing device being. It is crucial that the inflowing liquid is too? Actuation of the cleaning device used will.

A further training is given by the fact that the cleaning device comprises a bristled broom.

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If the radiation inlet surface is cylindrical, then it is provided according to a particularly simple further training that the broom spiral around the cylindrical Radiation inlet surface is placed. The broom can consist of two wires twisted together with an inlay of bristles exist. Such brooms are used in households as bottle cleaners - albeit without a spiral shape.

A particularly advantageous development in which the flow energy the liquid is used particularly effectively, is characterized in that the cleaning device comprises an impeller which can be set in rotation by the liquid flowing through. The impeller also ensures at the same time for a favorable swirling of the liquid (even disinfection rate). Is at the device the radiation inlet surface formed cylindrical, the arrangement is preferably made so that the impeller about the axis of the cylindrical Radiation inlet surface is rotatable. The impeller can in particular directly at the inlet opening in the irradiation chamber be arranged. The impeller can have flat or curved blades.

The device according to the invention for disinfection with cleaning device has the advantage that dirt from the liquid is largely prevented from settling on the radiation inlet surface will. Special cleaning work therefore only has to be carried out at longer intervals, if at all. The cleaning is carried out automatically when the device is in operation; there is therefore no need for a special electrical one or mechanical drive, which in any case would be difficult to accommodate in the irradiation chamber.

It should also be pointed out that the term "radiation inlet f laugh "is to be understood in the broadest sense. If the UV lamp is in direct contact with its outer surface with the liquid, so is the radiation inlet area given by this surface. As with the well-known

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direction with rod-shaped UV radiator, it will often be a cylindrical radiation inlet surface. This can also be formed, for example, by a tube that is permeable to UV radiation and inside which the actual UV radiator is located. Such a device is described in the utility model application G 9 " (ΰ 3 f 9" *? I · ~) ~ filed by the applicant at the same time.

A preferred Ausiiirungsbeispiel the invention is in described below with reference to two figures. It shows:

Figure 1 is a sectional view of a device for disinfecting water viewed from above and

FIG. 2 shows the device according to FIG. 1 when looking in the direction of the arrows U-II.

In Figures 1 and 2, a device for disinfecting water is shown, which can be used in particular for drinking water treatment or for water disinfection in a swimming pool .

The device comprises a rod-shaped UV radiator 2 which is arranged in an irradiation chamber 4. The radiation chamber 4 is formed by an outer tube of round cross-section and two wall pieces 8 and 10 attached at the ends. The pipe 6 is provided at diagonal end points with an inlet opening 12 and an outlet opening 14 for the water. The inlet opening 12 is formed by an inlet pipe 16 which is arranged perpendicular to the rod axis of the UV radiator 2 - and, as can be seen from FIG. 2 - opens obliquely into the interior of the irradiation chamber 4. End connection parts of the UV radiator 2, such as connection socket and starter choke, are arranged outside of the irradiation chamber 4. They are labeled 20 and 22. During operation, the UV radiator 2 emits UV radiation 24, which is drawn in wavy, into the irradiation camera

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Il till

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4, which is used to disinfect the liquid.

In the selected embodiment, the surface of the cylindrical UV emitter 2 in direct contact with the liquid to be sterilized. The radiation inlet face 26 is here is the same as the surface of the UV radiator 2 and is cylindrical. Instead, the UV radiator 2 can also be used in one (not shown) tube can be arranged which passes centrally through the outer tube 8 and which consists of a UV light permeable Material consists. Then there is a radiation inlet area 26 can be seen the outer surface of this inner tube (not shown).

The water can carry dirt with it, which is deposited on it the UV lamp 2. Since this reduces the radiation inlet area 26, there is a reduction in the Disinfection rate until the device finally becomes completely unusable for the aforementioned purpose of disinfection and is cleaned must become. In order to avoid dismantling the irradiation chamber 4 for the purpose of cleaning, it is inside the irradiation chamber a cleaning device 30 housed, the surface of the UV radiator 2 automatically when the device is in operation cleans. It should be particularly emphasized that the cleaning process takes place under the effect of the radiation flowing through the radiation chamber 4 Liquid is taking place. Special energy sources are therefore required for this.

The cleaning device 30 essentially comprises two parts, namely a broom 32 and an impeller 34, which are firmly connected to one another.

The broom 32 is equipped with bristles 36 which for the most part lie loosely on the radiation inlet surface 26 and - as will be explained in more detail - are moved over the radiation inlet surface 26 by the liquid they with or already prevent deposited dirt particles

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the deposit. The cleaning by means of the bristles 36 also works against the formation of streaks.

The broom 32 spirals around the cylindrical radiation inlet surface 26 lying around. It extends almost over the entire length of the UV emitter 2. It is created by the water power rotated around the rod axis of the UV lamp. The above-mentioned impurities are thereby stripped off by the bristles 36 and discharged with the liquid through the outlet opening 14. In the simplest case, the broom 32 can be composed of two Twisted thin wires exist, the bristles35 being held between these as a result of the twisting. the Shading of the UV radiator 2 by the broom 32 is negligible small.

From Figure 1 it can be seen that the already mentioned impeller 34 is located opposite the inlet opening 12. It consists of a central part 38 and six wings 40. The central part 38 is placed loosely on the UV radiator 2. The broom 32 is also attached to it. The incoming liquid hits the vanes 40 in the irradiation chamber 4 and thereby sets the vane wheel 34 in rotation. Through this the broom 32 is also taken along and also rotates offset. As long as there is a significant flow, the radiation inlet surface 26 is supported by the Bristles 36 cleaned.

Finally, it should be pointed out that when the risk of contamination is greatest, namely when it is high Throughput, advantageously also the cleaning is the fastest.

8 claims for protection
2 figures

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Claims (8)

· ■ t ιι · ti er ·· ti »···· · 1D Λ claims for protection 1. Device for disinfecting a flowing liquid, in particular of water, with an irradiation chamber with an inlet opening and an outlet opening for the liquid is provided, with a radiation inlet surface for UV radiation and closing off the radiation chamber with a UV radiator arranged behind the radiation inlet surface, characterized in that in the irradiation chamber (4) a cleaning device (30) which is rotatable about an axis and which is in physical contact with the radiation inlet surface is arranged (26) and that by the liquid flowing through the irradiation chamber (4) over the radiation inlet surface (26) is movable away. 2. Apparatus according to claim 1, characterized in that the cleaning device (30) is provided with a bristle (36) Includes broom (32). 3. Apparatus according to claim 2 with a cylindrical radiation inlet surface, characterized in that the broom (32) spirals around the cylindrical radiation inlet surface (26) is laid. 4. Apparatus according to claim 3, characterized in that the broom (32) consists of two with the inlay of bristles (36) together twisted wires. 5. Device according to one of claims 1 to 4, characterized in that that the cleaning device (30) is set in rotation by the flowing liquid Includes impeller (34). 6. Apparatus according to claim 5 having a cylindrical radiation inlet surface, characterized in that the impeller (34) is about the axis of the cylindrical radiation inlet surface (26) is rotatable. 7634793 04/27/78 III · ■ · Il fr ή ι ■ · O · - 8 - PA 105 7. Apparatus according to claim 6, characterized in that the impeller (34) at the inlet opening (12) for the Liquid is arranged (Figure 1). 8. Apparatus according to claim 7, characterized in that an inlet pipe (16) is provided at the inlet opening (12) is, which opens obliquely on the impeller (34) (Figure 2). 7634793 27.0478