EP2620490B1 - Active agent dispensing device and method for manufacturing an active agent dispensing device - Google Patents

Description

The present invention relates to a dispensing device for a toilet bowl, comprising a housing with a front and a back and at least one first chamber for receiving a cleaning and / or disinfecting and / or water treatment and / or anti-lime composition and / or any mixture of such Compositions, wherein the first chamber has at least one inlet and at least one outlet opening, and with a suspension device for hanging the housing on an edge of the toilet bowl such that the back towards a wall nearest the toilet bowl and the front toward a central portion of the Toilet bowl, wherein the composition or the mixture is in the form of a tablet, which tablet is a detergent compartment with a detergent composition and a chlorine compartment separated from the detergent compartment with a chlorine component e and at least one or a part of a surface of the chlorine compartment is uncovered by the cleaner composition before the intended use. Furthermore, the invention relates to a manufacturing method for such a drug delivery device.

Such a tablet is characterized primarily by the fact that it has a defined sub-range with the chlorine compartment, the ingredients are usually both much more corrosive and usually dissolve faster in water than the ingredients of the detergent compartments.

In particular, as such a tablet is placed in a drug delivery device, it may interact with other components of the drug delivery device due to the increased chemical aggressiveness of the chlorine component.

Against this background, it is an object of the present invention to provide a drug delivery device of the type mentioned above, in which the release of the chlorine component is controlled and without large fluctuations in volume during the life of the tablet.

This object is achieved by a drug delivery device according to claim 1 and by a method according to claim 15.

Accordingly, the tablet is arranged in the first chamber such that, with the surface of the chlorine compartment uncovered by the cleaner composition and / or a barrier layer adjacent to the cleaner composition, it points in the direction of a full-surface wall of the first chamber.

Such a wall is particularly preferably opposite the inlet opening of the first chamber, and the arrangement of the chlorine compartment with its soluble, d. H. unprotected side on just this wall causes the chlorine component is protected from too rapid release. The arrangement of the chlorine compartment on the wall thus serves to protect the chlorine compartment against too much flushing with rinse water and thus ultimately the slower, ie more controlled release of the chlorine component in the rinse water. This is especially effective (which is why such an arrangement is preferred within the scope of the invention) if the area of the surface of the chlorine compartment which is not covered (directly or indirectly) by the cleaner composition points in the direction of the full-surface wall. In particular, it is preferred that the chlorine compartment is embedded as a smaller area in a surface of the detergent compartment, wherein particularly preferably the chlorine compartment has only a single free surface, which is completely surrounded by the detergent compartment.

As a full-surface wall, each wall is called, which is formed over the entire area in the region which is arranged parallel to the surface plane of the chlorine compartment. The wall is preferably waterproof, so that it largely prevents penetration of liquids directly to the chlorine compartment.

Overall, the measure of a wall-side arrangement of a chlorine compartment with a chlorine component is a tried-and-tested means of delaying and controlling the release of the chlorine component. This ultimately increases the longevity of the tablet in the first chamber.

The first chamber may be provided with a cover in which, for example, the inlet and the outlet opening is installed. However, it can also be designed without a separate cover. The inlet opening and the outlet opening can be two separate Openings may be, but they can also be realized as a combined inlet / outlet. Furthermore, both a plurality of inlet openings and a plurality of outlet openings may be provided, and preferably additional openings which at least do not primarily serve to pass rinse water, but rather to the continuous delivery of fragrances contained in the respective composition or mixture.

The suspension is preferably designed for removably hanging the housing at the edge of the toilet bowl, that is, so that it can be unhooked from the toilet bowl again, without having to be destroyed before. As a result, for example, a refilling, in particular the first chamber, are performed.

The cleanser composition comprises at least one surfactant-containing cleaning agent and preferably a surfactant mixture having a surface-active effect in order to dissolve and remove as far as possible the deposits and soiling in the toilet bowl during each flushing process. Usually, the cleaner composition is designed so that it dissolves in ordinary use only over a period of several days to several weeks.

The chlorine component may be any chlorine-containing reagent which has a cleaning action-promoting action with water, namely, primarily, a disinfecting and bleaching effect due to the release of chlorine-containing compounds. Released chlorinated compounds having such an effect may be, for example, free chlorine, but also hypochlorites. The chlorine component is preferably selected to be stable under normal ambient conditions, i. H. in a dry or slightly humid environment, is largely stable, so that no or only small amounts of free chlorine or hypochlorite are released under these conditions.

• Bereitstellung mindestens einer ersten Kammer zum Aufnehmen einer Reinigungs- und/oder Desinfektions- und/oder Wasserbehandlungs- und/oder Antikalkzusammensetzung und/oder eines beliebigen Gemischs derartiger Zusammensetzungen, wobei die erste Kammer mindestens eine Einlass- und mindestens eine Auslassöffnung aufweist,
• Bereitstellung einer Aufhängevorrichtung zum Einhängen des Gehäuses an einem Rand der Toilettenschüssel derart, dass die Rückseite in Richtung einer nächststehenden Wand der Toilettenschüssel und die Vorderseite in Richtung eines zentralen Bereichs der Toilettenschüssel weist,
• Bereitstellung der Zusammensetzung bzw. des Gemischs in Form einer Tablette, welche Tablette ein Reinigungsmittelkompartiment mit einer Reinigermasse und ein von dem Reinigungsmittelkompartiment getrenntes Chlorkompartiment mit einer Chlorkomponente umfasst, und mindestens eine oder ein Teil einer Oberfläche des Chlorkompartiments vor der bestimmungsgemäßen Anwendung von der Reinigermasse unbedeckt ist,
• Anordnen der Tablette in der ersten Kammer derart, dass sie mit der von der Reinigermasse und/oder einer an die Reinigermasse angrenzenden Sperrschicht unbedeckten Oberfläche des Chlorkompartiments in Richtung einer vollflächigen Wandung der ersten Kammer weist.

A method according to the invention for producing a dispensing device for a toilet bowl, wherein the active substance dispensing device has a housing with a front side and a rear side, comprises at least the following steps:

• Providing at least a first chamber for receiving a cleaning and / or disinfecting and / or water treatment and / or anticalcifying composition and / or any mixture of such compositions, the first chamber having at least one inlet and at least one outlet opening,
• Providing a suspension device for suspending the housing from an edge of the toilet bowl such that the rear side faces towards a wall of the toilet bowl nearest the front and towards the front in the direction of a central region of the toilet bowl,
• Providing the composition or mixture in the form of a tablet, which tablet comprises a detergent compartment with a detergent composition and a chlorine compartment separated from the detergent compartment with a chlorine component, and at least one or a portion of a surface of the chlorine compartment is uncovered by the detergent composition prior to its intended use .
• Arranging the tablet in the first chamber such that it faces with the surface of the chlorine compartment uncovered by the cleaner composition and / or a barrier layer adjacent to the cleaner composition in the direction of a full-surface wall of the first chamber.

In other words, an active substance delivery device according to the invention is produced by providing the individual components already mentioned above and by combining them.

Further particular advantageous refinements and developments of the invention will become apparent from the dependent claims and the following description. In this case, the method can also be developed according to the dependent claims for drug delivery device.

In order to significantly increase the control effect of the release of the chlorine component, it has proven to be effective if a surface of the tablet defined by the chlorine compartment is in contact with the wall at least in some areas. The tablet thus lies flat against the side of the chlorine compartment on the wall and is thereby protected by the wall particularly effective. Thus, although a slight flushing of the chlorine compartment alone is desirable because even something of the chlorine component should get into the flow of rinse water, but by the coverage of the chlorine compartment is not achieved a complete closure effect, but only a reduction in the amount of rinse water, the up arrives at the chlorine compartment.

Preferably, the tablet is pressed in the direction of the wall. So it acts a force of the housing or individual of its components on the tablet, which press them in the direction of the wall. On the one hand, this can serve for the correct positioning of the tablet, but on the other hand, especially the tracking of the tablet. The more that has already dissolved from the purifier mass, the simpler theoretically the rinse water can also reach the chlorine compartment and thereby dissolve more of the chlorine component than desired. By contrast, if the tablet is force-based (preferably automatically, for example spring-based) in the direction of the full-surface wall, this accelerated rinsing effect can be counteracted effectively and with a measure that is easy to implement.

According to an advantageous development of the invention, the detergent compartment and the chlorine compartment are at least partially separated by a barrier layer, and at least one or a part of the surface of the chlorine compartment is uncovered by the cleaner composition and the barrier layer before the intended use.

At least one or a part of a surface of the chlorine compartment is preferably neither directly nor indirectly covered by the cleaner composition nor by the barrier layer before the intended use. "Partially separated at least in part by a barrier layer" means that the detergent compartment and the chlorine compartment are mechanically, in particular partially or completely, in communication via the barrier layer, which is largely stable under the respective conditions of use, so that the detergent tablet is present with defined proportions. In particular, the barrier layer has the function that at least the major part of the cleaner composition is not in direct contact with the chlorine component during storage and secondly during use. The advantage of this is that components that are unstable to chlorine-containing reagents, such as most surfactants, dyes, fragrances, etc., are protected from degradation or fading upon storage and for extended periods of time during normal use or use become.

In a preferred embodiment of the invention, the barrier layer may be formed from a material and / or in a thickness such that it dissolves more slowly during the intended use, in particular in contact with water, than the detergent compartment and the chlorine compartment. It can thereby be achieved that the barrier layer is largely stable and decomposition of the chlorine-unstable ingredients into the detergent compartment is largely avoided.

In this case, it is particularly preferred that the smaller compartment, usually the chlorine compartment, is surrounded on several sides by the barrier layer and optionally the respective other compartment. It is therefore expedient to use the smaller compartment in a recess of the other compartment, wherein the barrier layer covers both the bottom area and the side areas. For example, the barrier layer may also go beyond the interfaces between the two compartments. An example would be a tab-in-tab variant in which two tablets of different sizes are combined as compartments. For example, a smaller cylindrical tablet can be sunk in a likewise cylindrical depression of a larger tablet. In this case, the barrier layer can be attached both to the bottom, the sides and in a part of the protruding from the recess top of the smaller tablet or the larger, surrounding the smaller tablet tablet to further complicate the direct contact between the chlorine component and the cleaner composition , By virtue of this arrangement, the thickness of the barrier layer necessary to ensure the corresponding solution speeds can usually already be set in a suitable range.

In an alternative embodiment, however, it is also possible, for example, to use a material for the barrier layer whose solubility is inferior to the surrounding materials of the detergent compartment or of the chlorine compartment. When inferior in solubility, the cleaner composition of the detergent compartment and the chlorine component of the chlorine compartment tend to dissolve faster than the barrier layer, so that the tendency for separation of the two components from the barrier layer is much less than in conventional systems. The advantage is that the two compartments remain separated for a longer time even in use.

In such a detergent tablet with z. Example, a chlorine compartment integrated into a detergent compartment, the chlorine component, in particular the not covered with a barrier layer part of the chlorine compartment, preferably coated with a complete or partial coating or a coating as an additional protective layer for storage, so that no direct contact between the chlorine component and the purifier mass is given. For example, the chlorine compartment may be shrink-wrapped in a slightly water-soluble protective sleeve before it is glued into the detergent compartment by means of a barrier-type adhesive. In this embodiment, the chlorine component is then indirectly from the Barrier layer covered at least in the areas adjacent to the detergent compartment. Such a protective layer usually fulfills a protective effect against the intended use, for example during storage or handling during production, but has no effect as a barrier layer. In particular, the stability of the ingredients of the cleaner composition can be maintained over several years. Such a protective layer can be, for example, a polymer film, in particular a polyvinyl alcohol film, or a coating of such a material.

In a further preferred embodiment, the barrier layer is at least partially formed by an adhesive which holds the chlorine compartment in the detergent compartment or the detergent compartment in the chlorine compartment. So z. B. the function of a barrier layer also used for connecting or gluing the two tablets means, such as an adhesive take over. This is introduced during the manufacturing process of the detergent tablet according to the invention, for example in molten or other liquid form in a recess of a detergent and distributed by pressing a chlorine compartment in this depression in the spaces formed by the two tablets or in the open pores of the detergent. Upon cooling or curing of the molten or liquid adhesive then forms a barrier layer in situ on the chlorine compartment at least at the direct contact points to the detergent compartment. Thus, a separate complete enclosure of the chlorine compartment can be omitted, thereby reducing production costs.

Preferred materials employed for this barrier layer include, for example, high molecular weight polyethylene glycols, paraffins / waxes, stearate, silicates (e.g., waterglass), teflon, silicones, aluminas, or a mixture thereof.

In a preferred embodiment, the detergent tablet is characterized in that the detergent composition comprises one or more components, for example consisting of surfactant-containing cleaning agents, polymers, sulfates, carbonates, citrates, dyes, fragrances, fillers and tabletting aids. Particularly preferably, the cleanser composition comprises a combination of these components, optionally also in combination with other customary ingredients for such detergent tablets, such as, for example, preservatives.

An exemplary preferred detergent composition includes, for example, one or more detergents, one or more polymers, sodium sulfate, sodium carbonate, trisodium citrate, or a combination thereof.

The detergent tablet according to a preferred embodiment comprises one or more surfactant-containing cleaning agents. Preferred examples of the surfactant-containing detergent are selected from salts of alkylbenzenesulfonic acid, fatty alcohol sulfate, fatty acid alkanolamide, fatty alcohol ethoxylate, ether sulfate, polyethylene glycol and ethoxylated alcohols, which may be used alone or in combination with each other.

In a preferred detergent tablet, the chlorine component comprises a granular matrix with at least one chlorine-containing reagent and preferably at least one chlorine-stable surfactant and optionally tabletting and / or other auxiliaries. Such a matrix leads to an additional separation and has a positive effect on the pressing behavior and the tablet strength. Chlorine-stable surfactants can also be used, for example, to form a barrier layer. The matrix of the chlorine compartment in this case would itself act as such a barrier so that an extra barrier between the detergent compartment and the chlorine compartment could be omitted. Examples of such chlorine-stable surfactants are especially amine oxides, etc.

Further, in a detergent tablet as described above, the chlorine component may be mixed with detergent fillers, tableting aids or a mixture thereof.

In a preferred embodiment of the detergent tablet, the chlorine component comprises, for example, dichloroisocyanurate (eg the sodium salt) or trichloroisocyanuric acid or a mixture thereof. With water forms from sodium dichloroisocyanurate, for example, hypochlorite, which has both a disinfecting and a bleaching effect. For example, trichloroisocyanuric acid breaks down chlorine in an acidic environment, whereas in an alkaline environment, the acid is first neutralized before hypochlorite is formed.

When trichloroisocyanuric acid was used, several studies have shown that it has the advantage over dichloroisocyanurate of being less reactive. Especially with incorrect use of acidic cleaning agents, eg. B. in the household has Trichloroisocyanuric acid has the advantage that the non-intentional contact with the acidic medium (eg., An acidic toilet cleaner) significantly less toxic chlorine-containing gases or chlorine gas are released. This is probably due to the above different chemical behavior. Thus, measurements of the chlorine-containing compounds directly above a toilet bowl with a Dräger tube have shown that with normal use of the detergent tablet in a cup in the toilet bowl, the readings remain below the MAK value of 0.5 ppm for both chlorine reagents, but at one Toilet stick with dichloroisocyanurate at 1-2 ppm are well above the MAK value when the detergent tablet comes in contact with a urinary scale (with 10% hydrochloric acid). Although the concentration upon contact of the urinary scale with Trichlorcyanursäure increases from about 0.1 ppm to about 0.2 to 0.3 ppm, but remains below the MAK value of 0.5 ppm.

A preferred embodiment of the detergent tablet comprises the chlorine component dichloroisocyanurate in less than about 50 wt .-%, and preferably between about 5 to about 35 wt .-%. Based on the total tablet, the dichloroisocyanurate is preferably below 25% by weight and more preferably at about 2-15% by weight.

Trichloroisocyanuric acid, on the other hand, is comprised in at least about 20% by weight, but not more than about 80% by weight, and preferably at least about 30 to about 60% by weight in a preferred embodiment to provide the cleaning promoting effect. Based on the total tablet, the trichloroisocyanuric acid is preferably below 40 wt .-% and more preferably at about 2 - 20 wt .-%.

A particularly advantageous effect of the invention when used in the context of a drug delivery device, wherein the housing comprises a second chamber containing a gelled perfume.

The principle of a two-compartment drug delivery device is, for example, in the European patent EP 1 444 319 B1 In this case, in a first chamber of a housing, a cleansing, disinfecting, water-treating or calcification composition is kept ready, and in a second chamber of the same housing, a gelled perfume. By means of a hanger, this drug delivery device can be hung in the toilet bowl, and the second chamber should, in order to allow a uniform and undisturbed delivery of perfume, not be in the way of flushing the toilet bowl.

By means of such a device, it is possible to run the composition, which is located in the first chamber, in a flushing of the toilet of rinse water, so that a certain amount of the composition is flushed into the toilet bowl. At the same time, the gelled perfume scents the ambient air permanently. Thus, a distinction is made between a first component of the active substance delivery device, which is intended to enter the rinsing water of the toilet, and a second (fragrance) component, which passes into the ambient air. If the first component is now a tablet of the abovementioned type, it is of considerable importance that too much of the chlorine component does not enter into the flushing stream, so that the gelled perfume is not destroyed by the released vapors and, if necessary, splash water effects or in its fragrance delivery is impaired.

• Die zweite Kammer umschließt das gelierte Parfüm so, dass sie eine Abgabe-Oberfläche des gelierten Parfüms definiert, wobei das Gehäuse derart ausgebildet ist, dass bei bestimmungsgemäßer Einhängung der WC-Körbchenanordnung in der Toilettenschüssel
  • die Einlassöffnung der ersten Kammer im Weg eines Spülwassers liegt und
  • die zweite Kammer zumindest bereichsweise so im Weg des Spülwassers liegt, dass die Abgabe-Oberfläche des gelierten Parfüms bei einem Spülvorgang zumindest bereichsweise überspült wird.

Particularly preferred and different from this prior art, the drug delivery device can be developed as follows:

• The second chamber encloses the gelled perfume to define a delivery surface of the gelled perfume, which housing is configured such that when the toilet bowl assembly is properly mounted in the toilet bowl
  • the inlet opening of the first chamber is in the path of a rinse water and
  • the second chamber is at least partially in the way of the rinsing water that the delivery surface of the gelled perfume is at least partially flushed in a rinsing process.

In this case, the second chamber is formed in combination with the gelled perfume such that the dimensions of the delivery surface remain essentially the same during evaporation and / or overflow.

In contrast to the cited prior art, the principle described here turns away from keeping the second chamber out of the way of the rinse water, but it proceeds according to the exact opposite principle: the second chamber is targeted at least partially in the path of the rinse water, and Although in such a way that the gelled perfume is flushed over at its delivery surface at least partially. This means that the housing has a geometry that allows such over-flushing. On the one hand, this can be achieved by positioning the delivery surface in the housing so that the overflow is possible, and on the other hand by the fact that the housing as a whole is dimensioned and designed such that an overflow as far-reaching, so large areas of the housing, namely at least the first chamber and partially the second chamber is possible.

In particular, it is intended in the context of this that the second chamber is combined with the gelled perfume in such a way that the gelled perfume has an essentially always the same size dispensing surface. It is thus decidedly avoided that the perfume shrinks overall in its dimensions, but it should be reduced at most in one spatial direction, namely the spatial direction transverse to the plane of extension of the delivery surface.

On the one hand, this effect is achieved in that the gelled perfume is held in the housing in such a way that flushing at the edge regions of the dispensing surface or backwashing on a surface beyond the dispensing surface is as far as possible prevented. On the other hand, it is prevented by the nature of the perfume itself, that the perfume is removed during the life of the composition or the mixture in the first chamber due to its scent delivery or overflow at its edge regions of the delivery surface. Corresponding possible materials for such a gelled perfume are exemplified below.

The effect of such a drug delivery device is that the gelled perfume is specifically moistened in the second chamber. In fact, the inventors have surprisingly found that, contrary to the fears implicitly expressed in the above mentioned prior art, such overflow does not have to have a negative effect on the perfume effect of the gelled perfume. On the contrary, it has been found in experiments that an increased release of fragrance, ie secretion of the gelled perfume, results directly following the rinsing. This means that just when there is a particularly high need for perfume delivery, namely after actuation of the toilet flush, this perfume delivery is increased effectively and without further mechanical or similar measures. If the flushing of the toilet bowl is therefore operated more frequently, then more perfume fragrance is automatically emitted than at times of low frequency of use. At the same time, the essentially constant dimensioning of the delivery surface of the gelled perfume ensures that no substantial reduction effects of the delivery of perfume can be recognized over a longer useful life of the active substance delivery device. This results in the synergetic effect of an increase in the output shortly after a flushing operation while maintaining a substantially constant basic output of the gelled perfume throughout the life of the drug delivery device. This life is defined by the life of the composition contained in the first chamber or the mixture contained therein.

Such an arrangement is particularly advantageous in the context of the present invention, in which indeed the gelled perfume comes into contact with the rinse water. If too much of the chlorine component dissolved in the rinse water and this came with too much chlorine added rinse water in contact with the gelled perfume, so etching effects on the delivery surface of the gelled perfume could result, it should be avoided if possible.

As the gelled perfume, for example, a composition consisting of a perfume ingredient, a solvent ingredient, a thickener ingredient and optionally a dye ingredient can be used. The following composition has been found to be particularly effective, both in terms of the output of the fragrance and the rinsing resistance of the overall composition: Perfume 50 - 80% Dipropylene glycol monomethyl ether (eg Dowanol DPM from Dow, Arcosolv DPM from Lyondellbasell) 0 - 30% Cellulose acetate butyrate (eg Eastman CAB-381-0.5) 10 - 20% dye optional as required

In this composition, the following weight losses were recorded in laboratory tests at 40 ° C for two different perfumes (citrus or fresh scented), once in the dry, that is not over-rinsed with water, and once in the state over-rinsed with water: Perfume 1 (citrus) Perfume 2 (fresh) Weight loss (%) dry washed over with water dry washed over with water after 1 h 0.33 2.01 0.27 3.79 after 2 h 0.34 2.55 0.32 4.43 after 3 h 0.66 3.10 0.38 5.46 after 4 h 0.87 4.29 0.59 6.81

It can therefore be seen that, when the respective perfume was perfused with water, it was possible to achieve a much higher output of volatile substances, that is to say essentially of perfume, by a multiple. This results in an equally enhanced scent effect after flushing with rinse water in a toilet bowl.

At around 15%, the proportion of solvent in the composition is relatively low; The composition is further characterized by the fact that it has no stored water content. As a result, a water-based separation effect when washing over the gelled perfume is largely reduced. The perfume should namely, despite the overspray not or only slightly dissolve in water to minimize surface losses due to rinsing.

The present composition was placed for testing on a plastic disc at room temperature immersed in water and thus trying to dissolve the composition with stirring. After two hours (corresponding to about 300 flushes with 20 to 30 seconds of water contact), depending on the perfume used, between 1.9% and 5.4% of the gelled perfume dissolved. This means that the jellied perfume, with the use of such a composition during the life of the drug delivery device by the number of rinses until complete dissolution of the composition or the mixture in the first chamber (after about 200 to 400 rinses depending on the toilet version) is given by the over-flushing with water in addition to the perfume delivery in the air and a part in the water itself gives and thus an additional freshness effect is achieved. The overflow of the gelled perfume thus does not have the effect that it would be used up to the end of the life of the substances contained in the first chamber.

Preferably, the second chamber is designed so that it is surmounted at least partially by the edge of the toilet bowl when properly suspending the drug delivery device in the toilet bowl. This can be realized in that the entire housing is dimensioned and shaped by its geometry that it is surmounted overall (at least in certain areas) from the edge of the toilet bowl. Alternatively, the second chamber can be arranged in the housing so that it (at least partially) when properly suspending the drug delivery device is arranged under the edge of the toilet bowl. Other areas of the drug delivery device need not necessarily be arranged below the edge. Such an overhanging of the edge of the toilet bowl via the second chamber causes in a particularly simple manner that the second chamber is at least partially in the path of the rinse water. In fact, it can hardly be prevented that turbulences of the rinsing water in the edge region of the toilet bowl lead to an at least partial overflow of the second chamber. The overflow of the second chamber is so simplified and the amount of the second chamber flushing rinse water even increased. As a result of the geometry and arrangement of the second chamber, it is even possible to set relatively precisely how much rinse water overflows the second chamber and thus the dispensing surface.

It has proved to be particularly advantageous when the housing tapers from a middle region, on which the suspension device is fastened, toward at least one end region in the transverse direction to a suspension direction defined by the suspension device, preferably tapering. As a result, the housing becomes narrower towards this end region and can therefore be more easily flushed there by the flushing water in the toilet bowl. Here, the central area serves to "catch" the rinse water centrally or to accumulate something, whereby it is directed into the tapered end area. In this context, it is particularly preferred if the second chamber is positioned in such an end region. In such a case, it is precisely the second chamber in the end region which can be particularly easily washed over by the rinsing water. Such a taper can take place both along a sectional plane which is substantially perpendicular to the plane of the water level in the toilet bowl, as well as in a substantially parallel sectional plane to the level of the water level in the toilet bowl. The flushing effect by diversion from the central region in the direction of the respective end region results in particular when the taper in the sectional plane is perpendicular to the plane of the water level. A combination of tapers in the two cutting planes can also be provided.

So it is also preferred that the housing is convexly formed on its front side and / or on its back at least partially. In this way, (at a convex shape at the back), the drug delivery device can conform to the concave surface profile of the toilet bowl or (in a convex shape on the front) are guided below the edge of the toilet bowl.

The second chamber may in principle be provided with a cover which partially shields the dispensing surface from an outside of the housing. Such a cover then has inlet or outlet openings, wherein the rinse water can enter via the inlet openings and exit from the outlet openings again. Through both types of openings, the fragrance can be dispensed. Again, inlet and outlet ports may be combined as common openings. Again, it is possible to provide one or more such (inlet and / or outlet) openings. It is preferred, however, that the second chamber is at least partially formed free of cover at least on its side with the delivery surface. This has the effect that a uniform delivery over the entire delivery surface of the gelled perfume can be done and is not partially prevented by a cover. In addition, it is thus ensured that the rinse water which overflows the gelled perfume does not remain unnecessarily long in contact with the gelled perfume, so that on the one hand a time delay in the delivery of scent after pressing the toilet flushing and on the other hand, an unnecessarily strong solution of the jellied perfume by standing Rinse water is avoided.

In principle, it is possible to connect the first and the second chamber (just as otherwise each of the two with other chambers) with each other, since both are in the way of the rinse water. In such a case, it is particularly advantageous if the second chamber is positioned upstream in the rinse water stream and the second chamber thereof downstream, so that the moistening effect in the second chamber is such that no compositions from the first chamber onto the delivery surface of the gelled Perfumes arrive in the second chamber. Analogously, an arrangement of a further chamber with a gelled perfume in relation to the first chamber should be understood. It has proved to be particularly effective if the first chamber and the second chamber (and correspondingly also further chambers) are separated from one another, i. isolated from each other against liquid passage are. As a result, the gelled perfume can be protected in a particularly effective manner from the composition or the mixture from the first chamber. First and second (or more) chamber are therefore washed separately from each other by different areas of the rinse water.

Since the second chamber is designed to be overflowed by the rinse water, it may, in contrast to the above-cited prior art, also be attached to the back, that is in the direction of the wall of the toilet bowl. It is still preferred that the second chamber is arranged at the front and at least partially open to the central region of the toilet bowl. On the one hand, this results in increased scent delivery of the gelled perfume in the second chamber and, moreover, it is possible to inspect the gelled perfume without unhooking the drug delivery device from the toilet bowl. This allows a user to recognize at any time whether sufficiently gelled perfume is kept in the second chamber and, if necessary, provide timely replacement. Precisely because the perfume is anyway such that its delivery surface is not significantly reduced in the course of its life, it is also assumed that it does not become unsightly over time, such as cracking in the delivery surface o. Ä. In addition, the gelled perfume, especially with appropriate color, also develop a certain aesthetic value.

In principle, with a suitable choice of the gelled perfume, a constant delivery surface can be realized simply by virtue of the gelled perfume having such low water solubility and so low a mass reducing effect on the delivery of perfume that no shrinkage effect can occur along the edges of the delivery. Surface is recognizable. It is particularly preferred that the delivery surface of the gelled perfume by walls of the second chamber at least partially, preferably all around, is limited. Such walls effectively prevent backwashing of the gelled perfume by inhibiting the ingress of rinse water along the edges of the delivery surface. Therefore, it is particularly preferred that the gelled perfume is protected by all-round Wandrungen before such backwashing.

According to one embodiment of the invention, the second chamber comprises a number of anchoring elements which fix the gelled perfume in a designated anchoring position within the second chamber with respect to at least one spatial direction. Such anchoring elements thus serve to maintain the position of the gelled perfume along a plane parallel to the plane of the delivery surface, but at least in one of the two main directions of extension of this parallel plane, so that a lateral slippage and thus unwanted detachment of the gelled perfume of the the delivery surface opposite surface of the gelled perfume can be at least largely prevented.

It has proved to be particularly effective if the second chamber comprises a plurality of anchoring elements, which are spaced from each other and from an edge of the second chamber depending on a viscosity of the gelled perfume that the gelled perfume when properly suspended in the toilet bowl is substantially unchanged in its position in the second chamber, preferably held so that a gap-free connection between the edge of the second chamber and the gelled perfume is ensured. The distances of these anchoring elements from each other or from the edge of the second chamber are chosen depending on the viscosity of the gelled perfume. Stated differently, the gelled perfume may only have such a viscosity, which are adapted to the distances of the anchoring elements from each other or the anchoring elements from the respective edge of the second chamber. This is true in the sense that the gelled perfume is held firmly in place by the anchoring elements in combination, optionally with the rim. In particular, it is advantageous if no gap results between the edge of the delivery surface of the gelled perfume and the edge of the second chamber, so that the edge of the second chamber and the edge of the delivery surface merge directly into one another.

Such conditions are for example given in a drug delivery device with anchoring elements at a distance of at most 1 cm from each other and at a distance of at most 0.5 cm from the edge of the second chamber when the gelled perfume in use has viscoelastic properties, i. is present as a solid whose deformation behavior includes both elastic and viscous behavior patterns.

In view of the conventional sizes of drug dispensers in the toilet area, it has been found that directly adjacent anchoring elements should be spaced apart as far as possible at a distance of at most 30 mm, preferably at most 20 mm, particularly preferably at most 10 mm from each other, for example in the case of the gelled perfume has been stated above, bring about a sufficient positional fixation. As far as the shortest distance between the anchoring elements closest to the edge of the second chamber and this edge is concerned, it has been found that this should be at most 20 mm, preferably at most 10 mm, particularly preferably at most 5 mm.

The anchoring elements can basically be designed in the form of arbitrarily complicated geometries, which for example protrude from the edge of the second chamber or press from above onto the delivery surface of the selected perfume. In this sense, the anchoring elements are also referred to as holding elements for the gelled perfume. It has been found to be particularly easy to manufacture, yet sufficiently effective, when the anchoring elements comprise pins protruding from a rear plane of the second chamber. Such pins may have a rounded as well as an angular cross-section or combinations thereof. By projecting from the back plane of the second chamber into the region of the gelled perfume, a stabilizing effect of the position of the gelled perfume results parallel to its delivery surface. Such pins can, for example in the context of injection molding, particularly easy to be integrated in a housing, so that there is no appreciable additional effort to provide the anchoring elements.

The positioning of the individual anchoring elements preferably takes place in a uniform pattern within the second chamber, for example in row and row arrangements, each with uniform spacing from one another in at least one spatial direction. However, depending on the shape of the second chamber overall, it may also be useful to arrange the anchoring elements in whole or in part following the shape of the outer boundaries of the second chamber. This means in particular that anchoring elements are arranged in the direction of the outer boundary of the second chamber in a certain predefined maximum distance, while in the inner region of the second chamber only a few anchoring elements are present or the anchoring elements are arranged at a greater distance from each other.

Preferably, the anchoring elements, in particular pins, are designed so that they are at least in the initial state of the drug delivery device, i. do not protrude from the delivery surface of the gelled perfume at the front of the drug delivery device prior to first intended use or overflow. The height of the anchoring elements in the chamber in the direction of the front of the drug delivery device is therefore less than the filling level of the gelled perfume in the relevant chamber.

In principle, both the first chamber and the second chamber can be positioned anywhere in the housing. However, it has proven to be particularly effective for handling when the first chamber is arranged at least in a central region of the housing, to which the suspension device is attached. This ensures that the first chamber, which is provided for the liquid delivery of the substances contained in it, is always positioned optimally below the edge of the toilet bowl, so that the main amount of flushing water that hits the housing as a whole, also passed through the first chamber becomes. The first chamber may extend from the central region also in areas further away from the middle region, for example those (end) regions which serve for additional fragrance delivery, while the actual retention of the composition or the mixture in the first chamber takes place in the middle region.

A further development of the invention consists in that the active ingredient delivery device comprises a third chamber (possibly even further additional chambers), which is preferably constructed identically to the second chamber. As "identical" in this case, a mirror-inverted identical geometry of the second and third chamber is referred to. The third compartment may also contain a gelled perfume, for example the same gelled perfume as the second compartment. In the latter case, the division into a second and a third chamber essentially serves aesthetic purposes, as it ultimately equals a division of the second chamber into two smaller chambers. Preferably, the third chamber includes a filling that is different from the contents of the first and second chambers. This may, for example, once again be a composition or a mixture which is to be flushed into the toilet bowl via the rinsing water, or a gelled perfume. In the case of a perfume filling the second and the third chamber so different perfumes are kept in the second and third chamber, resulting in an optimized fragrance mixing effect. For example, a heavier-evaporating perfume may be disposed in the third chamber while a lighter-evaporating perfume is disposed in the second chamber. Such a combination can serve to increase the lifetime of the drug delivery device or to effect further differentiation of the basic delivery amount over the lifetime of the drug delivery device. In particular, it can also be provided that only the second chamber or the delivery surface of the gelled perfume contained in it is flushed by the rinse water of the toilet bowl, while the third chamber is realized so that when properly suspending the drug delivery device no or only a very small Contact to the rinse water is done.

A particular geometric configuration of the drug delivery device with a second and a third chamber is that the second and the third chamber are arranged on wings, which are located on two opposite end portions of the housing, preferably along a transverse direction to a hanging direction defined by the suspension are spaced apart. The second and the third chamber are thus located on either side of a middle region of the active substance delivery device or of the housing, so that the widest and most differentiated delivery of (fragrance) substances results. Thus, from the first chamber liquefied active ingredient in the rinse water, from the second chamber volatile perfume to the outside air and from the third chamber optionally liquefied active ingredient and / or volatile perfume. The spatial arrangement of the second and third chambers on wings thus means that the delivery of different substances can be differentiated, wherein the spacing of the second and third chambers by arrangement in the different wings of the drug delivery device can serve a better distribution of the different substances.

As an important parameter, the dimensioning of the delivery surface (s) of the gelled perfume or of the gelled perfumes can serve. It generally applies that the larger the (added) delivery surface, the more perfume can be released to the ambient air. Therefore, it is preferred that the total area of the delivery surface (s) of the gelled perfume (s) is at least 300 mm ² , preferably at least 500 mm ² , more preferably at least 800 mm ^{2 in} size. Such an area ensures a sufficient release of perfume to the ambient air; The upper limit for the area of the delivery surface (s) may preferably be set at 10,000 mm ² .

In addition to the surface area of the delivery surface, its ratio to the depth of the gelled perfume in the second and / or third chamber can also play a significant role. It has been found in experiments that it is sufficient if the square root of the amount of the delivery surface of the gelled perfume or the gelled perfumes has a ratio to a depth of the gelled perfume within the second and / or third chamber of at least 1.5: 1, preferably at least 2: 1, more preferably at least 2.5: 1. So there is a relatively low depth compared to the delivery surface (s) before. As the upper limit of this ratio, a ratio of 20: 1, particularly preferably 10: 1, is preferably selected in order to ensure that, even with larger delivery surfaces, there is still a sufficient depth of the gelled perfume in the respective ones Chambers is present. The depth of the gelled perfume is preferably at least 3 mm, more preferably at least 5 mm, regardless of the size of the respective delivery surfaces. This ensures, in particular, a sustainable scenting of the ambient air, since a sufficient amount of perfume substances can be provided via the depth of the respective gelled perfume.

The overflushing of the second chamber by the rinsing water of the toilet bowl can in principle be realized purely on the basis of geometric arrangements or the overall design of the active substance delivery device. It has proven to be a particularly expedient and therefore effective type if the second chamber comprises at least one inlet recess, which is designed so that the rinsing water is passed through the inlet recess when the active substance dispensing device is suspended as intended. Such an inlet recess can thus be understood as a kind of feed channel to the delivery surface of the gelled perfume and be arranged, for example, within an edge (or a wall) of the second chamber. It directs the rinse water in the direction of the delivery surface, whereby a corresponding dosing effect can be achieved.

In the case of toilet bowls, a distinction can basically be made between so-called flat-rinsers and so-called "deep-dishwashers". Flat-bed washers have a kind of step inside the bowl, while deep-dish washes are essentially funnel-shaped, leading directly into the toilet's siphon. Particularly preferably, it is provided that the second chamber is at least partially in the way of flushing a flushing toilet bowl when intended suspension of the drug delivery device that the delivery surface of the gelled perfume (in the second chamber) is flushed at least partially in a flushing. The drug delivery device is thus formed in its geometry and / or the arrangement of the second chamber so that the overflushing of the second chamber at least works in Tiefspülern. This represents a special challenge in that the rinsing water in the case of deep rinsers reaches the siphon in a relatively targeted manner and without much turbulence in a rinsing flow. Therefore, it is precisely in this case necessary to specially position the second chamber and make it geometric, so that a flush in all conventional toilet bowls is possible.

• Figur 1 eine perspektivische Vorderansicht einer Ausführungsform eines Behälters einer erfindungsgemäßen Wirkstoffabgabevorrichtung,
• Figur 2 eine perspektivische Vorderansicht einer aus dem Behälter aus Figur 1 gebildeten Ausführungsform einer erfindungsgemäßen Wirkstoffabgabevorrichtung,
• Figur 3 eine perspektivische Schnittansicht derselben Wirkstoffabgabevorrichtung wie in Figur 2 aus derselben Perspektive,
• Figur 4 eine perspektivische Rückansicht derselben Wirkstoffabgabevorrichtung wie in den Figuren 2 und 3,
• Figur 5 dieselbe Wirkstoffabgabevorrichtung wie in den Figuren 2 bis 4, bestimmungsgemäß eingehängt in eine Toilettenschüssel, ebenfalls in perspektivischer Ansicht,
• Figur 6 eine unterseitige Schnittansicht derselben Wirkstoffabgabevorrichtung wie in den Figuren 2 bis 5 entlang einer Schnittebene VI-VI aus Figur 2,
• Figur 7 eine schematische Verlaufsgrafik einer Duftabgabewirkung eines sich selbst auflösenden gelierten Parfüms gemäß dem Stand der Technik,
• Figur 8 eine schematische Verlaufsgrafik einer Duftabgabewirkung einer Wirkstoffabgabevorrichtung gemäß dem Stand der Technik, die nicht mit Spülwasser überspült wird,
• Figur 9 eine schematische Verlaufsgrafik einer Duftabgabewirkung einer Wirkstoffabgabevorrichtung gemäß einer Ausführungsform der Erfindung.

The invention will be explained in more detail below with reference to the accompanying figures with reference to embodiments. The same components are provided with identical reference numerals in the various figures. Show it:

• FIG. 1 3 is a front perspective view of one embodiment of a container of a drug delivery device according to the invention;
• FIG. 2 a front perspective view of one of the container FIG. 1 formed embodiment of a drug delivery device according to the invention,
• FIG. 3 a perspective sectional view of the same drug delivery device as in FIG. 2 from the same perspective,
• FIG. 4 a rear perspective view of the same drug delivery device as in the Figures 2 and 3 .
• FIG. 5 the same drug delivery device as in the FIGS. 2 to 4 Mounted as intended in a toilet bowl, also in perspective view,
• FIG. 6 a bottom sectional view of the same drug delivery device as in the FIGS. 2 to 5 along a section plane VI-VI FIG. 2 .
• FIG. 7 3 is a schematic diagram of a scent delivery effect of a self-dissolving gelled perfume according to the prior art;
• FIG. 8 FIG. 2 is a schematic graph of a scent delivery effect of a prior art drug delivery device that is not flushed with rinse water. FIG.
• FIG. 9 a schematic graph of a scent delivery effect of a drug delivery device according to an embodiment of the invention.

FIG. 1 shows a housing 2 for producing an embodiment of a drug delivery device according to the invention 1. It comprises a front side V and a rear side H, wherein the front side V (see. FIG. 5 ) when the drug delivery device 1 is mounted in the direction of a central region of a toilet bowl (cf. Fig. 5 ), while the back H points towards a next wall of the toilet bowl. For proper (reversible) suspension, the housing has a suspension device 5, which has in its rear region as an elastically bendable and thereby attachable to the edge of the toilet bowl loop 15. This loop 15 is inserted telescopically slidably at its front end in a locking cavity 17 fixedly connected to the rest of the housing, so that it can be moved up or down in the image, so that the holding device 5 are adapted to the dimensions of the edge of the toilet bowl can. The housing 2 has a central central region 10. A transverse direction Q, along which two end regions 4a, 4b adjoin on either side of the central region 10, extends transversely to a suspension direction E defined by the course of the holding device.

The housing 2 comprises a first chamber 19, which is completely closed on the front side by a wall 9 and lead into the top-side inlet openings 7. From her also bottom outlet openings (see. FIG. 4 - reference numeral 23) out. Furthermore, the housing 2 comprises a second chamber 3a and a third chamber 3b, which are each recessed in front of one of the two end regions 4a, 4b. These second and third chambers 3a, 3b are of identical design, ie the same in shape and aligned only mirror-inverted. They are both formed as a cavity, each having a peripheral edge 11 and a full-surface rear side plane 21 in the form of another wall 21. From the back plane 21 stand as anchoring elements 13 each have five pins 13 out.

The dimensions d _{1 of} the housing 2 at the outer boundaries of the two end regions 4a, 4b are smaller than the dimensions d ₂ in the transition region between the second and third chambers 3a, 3b to the central region 10. The housing thus tapers along the transverse direction Q. outward.

The largest distance d ₃ of the respective edge 11 of the respective second and third chambers 3a, 3b nearest anchoring element 13 is 3mm, the largest distance d ₄ between two nearest anchoring elements 13 is 10mm, with distances between two next to each other lying anchoring elements 13 of 5mm. The depth d _{5 of} the second and third chambers 3a, 3b is 5mm. The length of the anchoring elements 13 is preferably less than the depth d _{5 of} the second and the third chamber 3a, 3b, so that the anchoring elements 13 terminate below the upper end of the respective edge 11.

FIG. 2 shows one from the in FIG. 1 In addition to the elements already mentioned fillings of the second and third chambers 3a, 3b can be seen here. Each of these fillings comprises a gelled perfume 27a, 27b which is embedded in the cavity of the respective chamber 3a, 3b and in each case consists of the same chemical composition. Examples of a suitable composition are mentioned above. Towards the front side V, each of the two gelled perfumes 27a, 27b terminate with a discharge surface extending over the entire second and third chambers 3a, 3b, ie, from the respective edges 11 of the second and third chambers 3a, 3b, respectively is completed without a gap.

By the number, geometry and arrangement of the anchoring devices 13 (see. Fig. 1 ) and due to the specific nature, in particular viscosity properties, of the gelled perfumes 27a, 27b, it is achieved that the delivery surfaces 30a, 30b remain substantially constant in their surface dimensions, even when the scent is dispensed and / or flushed through flushing water of the toilet. It is thus avoided a backwashing of the gelled perfumes 27a, 27b and thus both a detachment from the respective rear side plane 21 and a marginal reduction, which would have the effect of reducing the fragrance delivery.

In the perspective sectional view in FIG. 3 It can be seen that in the first chamber, a tablet 29 is incorporated, which comprises a cleaning and / or disinfecting and / or water treatment and / or anti-lime composition and / or any mixture of such compositions. The tablet is divided into a detergent compartment 31 with a detergent composition and a chlorine compartment 33 with a chlorine component separated from the detergent compartment 31 by a barrier layer 35. The chlorine compartment 33 is in this case embedded in a surface of the detergent compartment 31 as an internal tablet, so that the front surface of the chlorine compartment 33 is uncovered by the detergent composition, which is formed as a solid. This uncovered surface of the chlorine compartment 33 points in the direction of the rear side of the full-surface wall 10 of the first chamber 19, so that the wall 10 closes off the chlorine compartment 33. This makes it possible to throttle or better control the release of the chlorine component in the chlorine compartment 33. Particularly preferably, the chlorine compartment 33 lies flat on the wall 10 of the first chamber 19 so that it loosely covers it. While the detergent compartment 31 so rinsing water can be lapped during a rinse, the rinse water flow along the chlorine compartment 33 is significantly reduced in its amount of water compared to Spülwasserstrom to the detergent compartment 31. Thus, at the same time chlorine component and detergent composition dissolved in the rinse water, but in a controlled ratio, the corresponds approximately to the volume ratio of the chlorine compartment 33 and detergent compartment 31. A uniform removal of both compartments 33, 31 is realized thereby.

A frame formulation for the tablet 29 is composed as follows:

Reinigungsmittelkompartiment

1. A) Salze der Alkylbenzolsulfonsäure 0 - 60%
   Fettalkoholsulfat 0 - 40%
   Fettsäurealkanolamid 0 - 15%
   Fettalkoholethoxylat 0 - 15%
   Ethersulfat 0 - 10%
   Polyethylenglykol 0 - 10%
   Ethoxylierte Alkohole 0 - 5%
2. B) Natriumsulfat 0 - 60%
   Natriumcarbonat 0 - 30%
   Trinatriumcitrat 0 - 10%
   Phosphonate 0-1%
3. C) Polycarboxylate 0 - 5%
4. D) Farbstoffe 0-1%
   Parfümöle 0 - 5%

The detergent compartment with cleaning function (conventionally also called toilet stick) is based on a surfactant mixture which is supplemented by polymers, soda, citrate and / or fillers. The detergent compartment typically consists of a selection of the following raw materials, these being divided into surface-active cleaning agents (A), salts (B), polymers (C) and further substances (D):

1. A) Salts of alkylbenzenesulfonic acid 0 - 60%
   Fatty alcohol sulfate 0 - 40%
   Fatty acid alkanolamide 0 - 15%
   Fatty alcohol ethoxylate 0 - 15%
   Ether sulfate 0 - 10%
   Polyethylene glycol 0 - 10%
   Ethoxylated alcohols 0 - 5%
2. B) Sodium sulfate 0 - 60%
   Sodium carbonate 0 - 30%
   Trisodium citrate 0 - 10%
   Phosphonates 0-1%
3. C) Polycarboxylates 0 - 5%
4. D) Dyes 0-1%
   Perfume oils 0 - 5%

In the preparation, one or more of the above components, but at least one surface-active cleaning agent, are mixed with each other and with optional further aids and added to an extruder. The extruded detergent composition is cut, for example in portions and pressed in a compression chamber in the final desired shape. In this case, a depression can be introduced into which the chlorine compartment, for example in the form of a tablet, is subsequently inserted. The extrusion of the extruded detergent composition can be carried out for the purpose of continuous production in a rotary tablet press or an extender press.

Alternatively, however, one or more defined holes can also be introduced into the extruded molded body during extrusion through one or more mandrels, into which chlorine compartments are subsequently inserted.

Chlorkompartiment:

As chlorinated solids mostly dichloroisocyanurate or trichloroisocyanuric acid are used.

• I) Dichlorisocyanurat 5 - 25%
  Natriumsulfat 30 - 60%
  Natriumcarbonat 30 - 60%
  Polyethylenglykol 1 - 10%
• II) Trichlorisocyanursäure 30 - 70%
  Natriumchlorid 20 - 40%
  Glyceride 5 - 20%

The solids for the compression of the chlorine compartment, in particular for the production of a tablet, can be selected from typical detergent fillers and tabletting aids. Exemplary compositions may be as follows:

• I) dichloroisocyanurate 5 - 25%
  Sodium sulfate 30 - 60%
  Sodium carbonate 30 - 60%
  Polyethylene glycol 1 - 10%
• II) trichloroisocyanuric acid 30 - 70%
  Sodium chloride 20 - 40%
  Glycerides 5 - 20%

The solids are mixed and then pressed into a tablet. Alternatively, however, the chlorine compartment can be prepared by means of an extrusion process, cut into portions and pressed into the final shape.

Production of the chlorine-containing detergent tablet

The previously prepared chlorine compartment is z. B. glued with a polyethylene glycol in a well of the previously prepared detergent compartments, so as to produce the chlorine-containing detergent tablet according to the invention. This is then individually welded together in a flowpack.

EXAMPLE

The use of trichloroisocyanuric acid (detergent tablet I) has been shown to have the advantage over Na-dichloroisocyanurate (detergent tablet II) to be less reactive. This has the advantage, if improperly used in the household, that significantly less toxic chlorine gases are released when not in contact with an acidic medium (eg an acidic toilet cleaner).

The following detergent tablets were first prepared for the measurements: Cleaner tablet I with trichloroisocyanuric acid% Cleaner tablet II with Na dichloroisocyanurate% 1.Reinigungsmittelkomponente Marlonsäure 20 20 soda 20 20 sulfate 24 24 Fettalkoholethoxylat 1.5 1.5 ether sulfate 1 1 polyethylene glycol 1.8 1.8 fatty acid alkanolamide 0.7 0.7 phosphonate 0.2 0.2 citrate 1.3 1.3 Perfume 2.2 2.2 dyes 0.3 0.3 water 2 2 2. Chlorine component trichloroisocyanuric 13 industrial salt 8th glycerides 4 dichloroisocyanurate 5 soda 10 sulfate 9 polyethylene glycol 1

With both detergent tablets, measurements were made directly over a toilet bowl with a Dräger tube (chlorine sensor). The following results regarding the chlorine concentration were obtained: Cleaner tablet I with trichloroisocyanuric acid Cleaner tablet II with Na dichloroisocyanurate Normal use in the toilet bowl about 0.1 ppm about 0.1 ppm Contact with a urine scale remover (10% hydrochloric acid) 0.2-0.3 ppm 1 - 2 ppm

When trichloroisocyanuric acid is used, the measured values remain below the MAK value of 0.5 ppm, while when using Na-dichloroisocyanurate the MAK value is significantly exceeded.

Of course, the tablet described in detail above can be modified in a customary manner by a person skilled in the art to a large extent. For example, the formulations of the detergent compartments or of the chlorine compartment can be modified by a person skilled in the art. The person skilled in the art also knows how to adapt the individual weight fractions to the corresponding requirements within the scope of the respective task (also with regard to the type of additionally used gelled perfume). Further possible embodiments in the preparation of the detergent tablet, for example of the tab-in-tab variants shown in the figures, are, for example, the spraying of the barrier component either to the detergent compartment or the chlorine compartment or to both compartments and the subsequent joining of the two compartments by means of a adhesive. An alternative embodiment of the production of the barrier layer would also be, for example, that one of the two or both compartments with the interfaces are immersed in a solution with the barrier layer component and then joined together. In another embodiment, injection of the barrier layer component into the gap between the two compartments, while these are merged, appropriate. In order to increase the spatial separation, it may for example also be advantageous for the tablet to draw in a protective layer film in the area of the contact surfaces between the two compartments. For example, in the in FIG. 3 shown example, the cylindrical body of the inner chlorine tablet are enclosed on the cylindrical surfaces by a protective layer film and then introduced into the opening of the detergent tablet. Such a manufacturing variant can be used in general and is not limited to cylindrical tablets. In this case, a protective layer film is not just a film, but this additional protective layer can also be present in the form of a coating.

FIG. 4 shows a rear view of the same drug delivery device 1. Here it can be seen that the loop 15 in the area which can be pushed into the latching cavity 17, a plurality of transverse strips 36 at a fixed distance from each other, which held by a cross spring 37 of the Einrasthhöhlung 17 so be that the holding device can not be extended unchecked. Rather, when pulling up the loop 15 to overcome a certain force, which is determined by the positive connection of the transverse strips 36 and the cross spring 37 and by the spring force of this cross spring 37.

In this rear view, it can further be seen that the tablet 29 is arranged only in the middle region 10 of the housing 2, wherein the first chamber 19 per se extends into the wings 4a, 4b of the housing 2. The number, shape and arrangement of the upper-side inlet openings 7, the lower-side outlet openings 23 and additionally attached to the back H of the housing additional openings 25 can be seen: The six rectangular inlet openings 7 are each larger in cross section (namely about three times as wide and equal length This results in a flushing a certain temporary storage effect of the rinse water in the first chamber 19. On the one hand to engage additional rinse water and on the other hand to regulate the duration of this congestion, are the approximately trapezoidal, from top to bottom narrowing additional openings 25 inserted. All openings, ie, the inlet openings 7, the outlet openings 23 and the additional openings 25 have exclusively in the direction of the detergent compartment 31 of the tablet 29. Again, it can be seen that the chlorine compartment 33 is not in the direct flushing of the rinse water, but as far as flushed, that enough chlorine-containing reagent dissolves to achieve the effect can.

FIG. 5 shows the previously described inventive drug delivery device 1 as intended hung in a toilet 39 with a toilet seat 49 and a toilet bowl 41. The toilet bowl 41 includes a rim 47, in which the housing 2 of the drug delivery device 1 is suspended by means of the suspension device 5 and a subsequent lower side Wall 45, which defines the central inner area 43 of the toilet bowl and therefore defined. During the rinsing process, rinse water 51 is introduced below the edge 47. The flushing flow of this flushing water 51 goes along areas of the wall 45, in particular it gets caught on the housing 2 of the active substance delivery device 1 and overflows both the first chamber 19 and the second and third chambers 3a, 3b.

FIG. 6 shows the previously explained drug delivery device 1 in a sectional view along a section line VI - VI FIG. 2 , The drug delivery device 1 is hooked here in the toilet bowl 41, so that the course of the edge 47 of the toilet bowl 41 and its wall 45 is indicated. It can be seen that the drug delivery device 1 is shaped so that it conforms to the rear wall 45. For this purpose, it is convex there. Also on its front side V it has a slight convex curvature which additionally assists that the second and third chambers 3a, 3b are positioned completely below the rim 47 of the toilet bowl 41 and only a small part of the central area 10 (in which the Suspension device is mounted) projects beyond the edge 47. The housing 2 is therefore also convex in longitudinal section to the ends, ie tapers in this cutting plane.

In this illustration, it is also clearly visible that the chlorine compartment 33 of the tablet 29 is completely closed by the front wall 10 of the first chamber 19. From the back H of the drug delivery device 1, it is also pressed resiliently in the direction of the front wall 10. This is realized by the concave design of the first chamber 19 on the back H (the tablet 29 is thus not only loosely inserted, but formally clamped between the back H and the wall 10), but can also be done using other resilient mechanisms. Along the wall 10 can penetrate despite the completion of the tablet 29 by means of the wall 10 water, so that the chlorine component is discharged even when commissioning the tablet 29 with the rinse water.

As shown here, the housing 2 consists of two (injection-molded plastic) shells 53 and 55, which are connected to each other via circumferential catches 57. In this case, the shape of the front shell 53 at the front V defines the cavity of the second and third chambers 3a, 3b, while the rear side facing the rear shell 55 and forms together with the first chamber 19.

FIGS. 7 to 9 show schematically for comparison the effect of fragrance delivery (N in indefinite scale) of a highly water-soluble gelled perfume (according to the prior art) with regular over-flushing, of a gelled perfume in the context of what it according to the cited EP 1 444 319 B1 is used and in the context of the described with reference to the preceding figures embodiment of the invention over the time t (in indefinite scale):

If a highly water-soluble gelled perfume is washed over regularly, it will not only be washed along its delivery surface, but also at its edges. As a result, with the passage of time, the delivery surface of the perfume and thus the delivery of perfume are reduced in an approximately linear process from a maximum perfume delivery N _max to zero. In other words, the fragrance delivery and thus the desired effect of the gelled perfume is steadily decreasing.

In contrast, the scent delivery of the non-flushed gelled perfume according to the above-mentioned document essentially always remains constant at a release value N _const . In the embodiment according to the invention with oversprayed delivery surface of the gelled perfume and constant delivery surface thereof, the output value N substantially oscillates between two values N ₁ , N ₂ : the lower (basic) output value N ₁ is always reached, if the toilet is not used for a long time, the increased release value N ₂ always when rinses are performed or just became even. At a first time t ₁ , the toilet flushing the toilet is operated, in which the corresponding drug delivery device 1 is mounted as intended. As a result, the fragrance release value N increases from the basic delivery value N ₁ to the increased delivery value N ₂ , which is reached at a time t ₂ after completion of the toilet flushing. The scent delivery value remains up to a time t ₃ on the increased release value N ₂ , namely approximately until then, when the rinse water has completely drained from the delivery surface of the gelled perfume and / or evaporated. Then it sinks again and reaches the basic delivery value N ₁ again at a time t ₄ . The same thing Procedure repeats again from a time t ₅ , when the toilet flush is operated again.

In contrast to the dispensing schemes of the two preceding figures, it is here for the first time succeeded to allow a constant basic delivery of the fragrance on the one hand and a demand-oriented increased delivery on the other hand, without resorting to complex mechanical distribution mechanisms o.

It is finally pointed out once again that the components of the drug delivery device described in detail above are merely exemplary embodiments which can be modified by the person skilled in the art in various ways, without departing from the scope of the invention. Furthermore, the use of the indefinite article "on" or "one" does not exclude that the characteristics in question may also be present multiple times. In addition, "units" can consist of one or more, even spatially distributed, components.

LIST OF REFERENCE NUMBERS

1

Drug delivery device

2

casing

3a

second chamber

3b

third chamber

4a, 4b

end regions

5

suspension

7

inlets

9

wall

10

the central region

11

edge

13

Anchoring elements - pins

15

loop

17

engagement concavity

19

first chamber

21

Back plane - wall

23

outlet

25

additional openings

27a, 27b

gelled perfume

29

tablet

30a, 30b

Drop-off surfaces

31

Reinigungsmittelkompartiment

33

Chlorkompartiment

35

junction

36

cleats

37

transverse spring

39

Toilet

41

toilet bowl

43

central inner area

45

wall

47

edge

49

toilet seat

51

dishwater

53, 55

Peel

57

rest

d ₁ , d ₂

Dimensions

d ₃ , d ₄

distances

d ₅

depth

e

Aufhängrichtung

H

back

N

fragrance release

N ₁

lower (basic) delivery value

N ₂

increased delivery value

N _const

constant delivery value

_N.sub.max

maximum fragrance delivery

Q

transversely

t

Time

t ₁ , t ₂ , t ₃ , t ₄ , t ₅

timings

V

front

Claims (15)

1. An agent dispensing device (1) for a toilet bowl (41), comprising a housing (2) having a front side (V) and a rear side (H) and at least one first chamber (19) for accommodating a cleaning and/or disinfection and/or water-treatment and/or descaling composition and/or any desired mixture of such compositions, wherein the first chamber (19) has at least one inlet opening (7) and at least one outlet opening (23), and having a suspension device (5) for suspending the housing (2) on an edge (47) of the toilet bowl (41) in such a manner that the rear side (H) points in the direction of a closest wall (45) of the toilet bowl (41) and the front side (V) points in the direction of a central region (43) of the toilet bowl (41), wherein the composition or the mixture is present in the form of a tablet (29), which tablet (29) comprises a cleaning agent compartment (31) with a cleaner compound and a chlorine compartment (33), separate from the cleaning agent compartment (31), with a chlorine component, and at least one or a part of the surface of the chlorine compartment (33) is uncovered before the intended use of the cleaner compound, and wherein the tablet (29) is arranged in the first chamber (19) in such a manner that the tablet with the surface of the chlorine compartment (33) uncovered by the cleaner compound and/or a boundary layer adjacent to the cleaner compound points in the direction of a whole-area wall (9) of the first chamber (19).
2. The agent dispensing device according to Claim 1, wherein a surface of the tablet (29) defined by the chlorine compartment (33) is in contact with the wall (9) at least in certain regions.
3. The agent dispensing device according to Claim 1 or 2, wherein the tablet (29) is pushed in the direction of the wall (9).
4. The agent dispensing device according to one of the preceding claims, wherein the cleaning agent compartment (31) and the chlorine compartment (33) are separated at least to some extent by means of a barrier layer (35), and at least one or a part of the surface of the chlorine compartment (31) is uncovered before the intended use of the cleaner compound and of the barrier layer.
5. The agent dispensing device according to one of the preceding claims, wherein the cleaner compound comprises one or more components consisting of tenside-containing cleaning agents, polymers, phosphonates, sulphates, carbonates, citrates, dyes, perfumes, fillers and tabletting aids.
6. The agent dispensing device according to one of the preceding claims, wherein the cleaner compound comprises one or more cleaning agents, one or more polymers, sodium sulphate, sodium carbonate, trisodium citrate or a combination thereof.
7. The agent dispensing device according to Claim 6, wherein the tenside-containing cleaning agent comprises one or more components, selected from salts of alkyl benzene sulphonic acid, fatty alcohol sulphate, fatty acid alkanolamide, fatty alcohol ethoxylate, ether sulphate, polyethylene glycol and ethoxylated alcohols.
8. The agent dispensing device according to one of the preceding claims, wherein the chlorine compartment (33) comprises a granular matrix with at least one chlorinated reagent and preferably at least one chlorine-stable tenside.
9. The agent dispensing device according to one of the preceding claims, wherein the chlorine compartment (33) comprises a mixture of the chlorine component with cleaning agent fillers and/or tabletting aids.
10. The agent dispensing device according to one of the preceding claims, wherein the chlorine component comprises dichloroisocyanurate or trichloroisocyanuric acid or a mixture thereof.
11. The agent dispensing device according to one of the preceding claims, wherein the housing (2) comprises a second chamber (3a), which contains a gelled perfume (27a).
12. The agent dispensing device according to Claim 11, wherein the second chamber (3a) encloses the gelled perfume (27a) in such a manner that it defines a delivery surface (30a) of the gelled perfume (27a),
    and wherein the housing (2) is constructed in such a manner that in the case of intended suspension of the WC basket arrangement in the toilet bowl (41)

    - the inlet opening (7) of the first chamber (19) lies in the path of rinsing water (51), and

    - the second chamber (3a) lies in the path of the rinsing water (51) in such a manner at least in certain regions, that the delivery surface (30a) of the gelled perfume (27a) is washed over at least in certain regions during a rinsing process,

    and wherein the second chamber (3a) in combination with the gelled perfume (27a) is constructed in such a manner that the dimensions of the delivery surface (30a) essentially remain the same during evaporation and/or washing over.
13. The active substance according to Claim 11 or 12, wherein the first chamber (19) and the second chamber (3a) are separate from one another.
14. The agent dispensing device according to one of Claims 11 to 13, comprising a third chamber (3b), which is preferably constructed in a structurally identical manner to the second chamber (3a), wherein the third chamber (3b) contains a filler, which differs from the contents of the first and the second chamber (19, 3a).
15. A method for producing an agent dispensing device (1) for a toilet bowl (41), comprising a housing (2) with a front side (V) and a rear side (H), comprising at least the following steps:

    - providing at least one first chamber (19) for accommodating a cleaning and/or disinfection and/or water-treatment and/or descaling composition and/or any desired mixture of such compositions, wherein the first chamber (19) has at least one inlet opening (7) and at least one outlet opening (23),

    - providing a suspension device (5) for suspending the housing (2) on an edge (47) of the toilet bowl (41) in such a manner that the rear side (H) points in the direction of a closest wall (45) of the toilet bowl (41) and the front side (V) points in the direction of a central region (43) of the toilet bowl (41),

    - providing the composition or the mixture in the form of a tablet (29), which tablet (29) comprises a cleaning agent compartment (31) with a cleaner compound and a chlorine compartment (33), separate from the cleaning agent compartment (31), with a chlorine component, and at least one or a part of the surface of the chlorine compartment (33) is uncovered before the intended use of the cleaner compound,

    - arranging the tablet (29) in such a manner in the first chamber (19) that the tablet with the surface of the chlorine compartment (33) uncovered by the cleaner compound and/or a boundary layer adjacent to the cleaner compound points in the direction of a whole-area wall (9) of the first chamber (19).

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