EP1905906A1 - WC-Körbchen - Google Patents

WC-Körbchen Download PDF

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Publication number
EP1905906A1
EP1905906A1 EP20060076793 EP06076793A EP1905906A1 EP 1905906 A1 EP1905906 A1 EP 1905906A1 EP 20060076793 EP20060076793 EP 20060076793 EP 06076793 A EP06076793 A EP 06076793A EP 1905906 A1 EP1905906 A1 EP 1905906A1
Authority
EP
European Patent Office
Prior art keywords
reservoir
fluid
opening
fluid delivery
aeration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20060076793
Other languages
English (en)
French (fr)
Other versions
EP1905906B1 (de
Inventor
designation of the inventor has not yet been filed The
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Sara Lee DE NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sara Lee DE NV filed Critical Sara Lee DE NV
Priority to EP06076793.6A priority Critical patent/EP1905906B1/de
Priority to ES06076793.6T priority patent/ES2560859T3/es
Priority to PCT/NL2007/050467 priority patent/WO2008039069A2/en
Publication of EP1905906A1 publication Critical patent/EP1905906A1/de
Application granted granted Critical
Publication of EP1905906B1 publication Critical patent/EP1905906B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
    • E03D9/03—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction ; Devices for agents in direct contact with flushing water
    • E03D9/032—Devices connected to or dispensing into the bowl
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/005—Devices adding disinfecting or deodorising agents to the bowl

Definitions

  • the invention relates to a dispensing unit for dispensing a freshening fluid.
  • a device for delivering to a locus a fluid or vapour for example a cleaning agent, a disinfecting agent, a deodorising agent, a fragrance, an insecticide, a miticide or an anti-allergenic agent.
  • the invention relates to the dispensing of a cleaning or disinfectant fluid into a toilet bowl or cistern, or a like vessel containing water or washed through with water.
  • Various toilet hygiene devices are known. Simple slow-dissolving disinfectant blocks are available, for placement in a cistern or toilet bowls. Also devices for releasing charges of a disinfectant or cleaning agent have been proposed. Such devices are comprised of a reservoir defining a volume for comprising the fluid and a mount for mounting the unit in a toilet bowl or the like. To provide a continuous and moderate outflow of fluid, often, such devices are often over-complicated. There is a need for a device which can deliver a fluid into a vessel over an extended period and which is simple and cost effective in construction.
  • the invention relates to the dispensing of a vapour into an airspace.
  • a vapour into an airspace.
  • EP0878586 discloses a dripping device that uses dripping to dispense a fluid into a toilet bowl.
  • the device is only effective per each flush of the toilet, since the fluid is collected in a collection tray.
  • One of the problems of this device is that the dose rate will strongly depend on the fill level. Furthermore, a risk exists that the liquid is mixed with water since the aeration opening is unshielded from the flush water.
  • a dispensing unit for dispensing a freshening fluid comprising: a mount for mounting the unit in a toilet bowl or the like; a reservoir defining a volume for comprising the fluid; the reservoir comprising a fluid delivery opening arranged at a lower part of the reservoir and dimensioned, in relation to the fluid contained in the reservoir, for providing a dripping action of the fluid when flowing out of the fluid delivery opening by gravity action; and an aeration opening providing aeration of an upper air volume of the reservoir wherein the reservoir is formed so that a larger part of the volume is provided in a higher part of the reservoir, so that a dosing ratio, defined as a height ratio of volume heights defining volumes for 100 %, 10 % fill ratio of the reservoir respectively, ranges between 1 and 4.0.
  • the fluid may be any fluid useful in fragrancing and/or disinfecting and/or cleaning and/or descaling of,and/or inhibiting the formation of scale in, the toilet bowl or cistern.
  • cleaning fluid will be used herein to denote all such fluids.
  • the device may be such that the fluid is dispensed from the distal end as a vapour, for example an insecticidal, insect-repellent, miticidal, deodorising, fragrancing or anti-allergenic vapour.
  • the liquid may be directed to an emanator pad or emanator device.
  • the rate of delivery from the device can be determined by one or more of the following: viscosity of the fluid; the size and design of the fluid delivery opening, in particular: a diameter and a channel length of the delivery opening; and a column height of the fluid.
  • Figure 1A shows a rectangular reservoir shape
  • Figure 1B shows a cylindrical reservoir shape having a cylinder axis oriented horizontally relative to a gravitational direction
  • Figure 1C shows a reservoir shape according to the invention, by the applicant also indicated as "Bala shape”.
  • the common denominators of these shapes are a reservoir 1 wherein a fluid 2 is contained, typically, a viscous fluid with a viscosity higher than 2 Pa.s. Due to the geometry of a fluid delivery opening 3 in the reservoir 1 arranged at a lower part of the reservoir (seen in the direction of gravity), in correspondence to the fluid 2 contained in the reservoir 1, the reservoir empties by slowly dispensing of the fluid 2 out of the fluid delivery opening 3. Typically, an embodiment is dimensioned so that an amount of 35 ml is emptied in about 28 days.
  • an aeration opening 4 is provided above the liquid surface, in this preferred embodiment provided in a side wall 5 of the reservoir 1 common with the fluid delivery opening 3.
  • the aeration opening 4 is provided to directly communicate with an upper air volume 6 of the reservoir above the fluid 2.
  • a numeric value indicating the variance of dose-rate is a ratio of initial dose rate and a dose rate, obtained at a 100 %, 10 % fill ratio of the reservoir 1 respectively, as shown in the top views and bottom views of Figure 1A, B and C respectively. Assuming that the composition of the fluid 2 does not change (which will be further elaborated hereinbelow), this value is dependent on the reservoir 2 shape and can be expressed as a height ratio of volume heights defining volumes for 100 %, 10 % fill ratio of the reservoir 1 respectively. Ideally, with a dose rate remaining constant in time, independently of height, this value should be 1.
  • a fill height would also 10%
  • a more optimal characteristic is to have, for example, still 25% of fill height at 10% fill volume.
  • an acceptable value would range between 1 and 4, preferably, between 1 and 3.3.
  • a column height depends linearly on the amount of fluid contained in the container.
  • a fill level of 10% will give rise to a height of 10%, amounting to a dosing ratio of 10. Accordingly, a rectangular shape amounts to a significant difference in dosing ratios during use of the device.
  • Figure 1B shows an alternative shape which may be suitable for dispensing purposes, in particular in a toilet, since this shape is easily clamped under a rim of a toilet bowl, and may be dimensioned in diameter to largely correspond to a width of a rim (not shown). Such a diameter may range from 20-50 mm, preferably around 35 mm.
  • the reservoir of Figure 1B is cylindrical in shape having a cylinder axis oriented horizontally relative to a gravitational direction.
  • a dosing ratio is 5.8, since a first height H1 is 34 mm, and a height H2 expressing a 10 % fill level is 5.9. Although this ratio is almost half better than the rectangular shape of Figure 1A, it still significantly differs from a calculated ideal value.
  • Figure 1C finally shows a shape according an aspect of the invention, wherein a dose rate is in a range of 1 - 4.
  • the reservoir 1 depicted in Figure 1C is formed in a frustroconical shape with an inclined bottom wall.
  • This shape generally causes a larger part of the volume provided in a higher part of the reservoir, providing a dosing ratio of typically less than 3.3, in particular for a 10% fill level height of 10.5, relative to an initial fill level height of 33.5, of 3.2.
  • a more constant dose rate can be provided with the illustrated shape.
  • Figure 2 shows another set of embodiments which are modifications of the frustro-conical shape illustrated in Figure 1C ( Figure 2A and Figure 2A).
  • the figures A and B each show three views, a top view in a 100% fill condition; a middle view in a 10% fill condition and a lower view illustrating the embodiment in cross-sectional view along a main axis of the reservoir.
  • embodiments are shown wherein a lower part of the reservoir is dimensioned to have an orientation that is more vertical than an orientation of the higher part of the reservoir.
  • a smaller lower volume 7 is created than a larger volume 8 that is situated higher up, thus providing effectively, for the outflow of fluid 2 of that larger volume 8 a relative constant height along the vertically oriented lower volume 7.
  • this creates a step form 9, wherein a small part of the volume is oriented downwards, in order to create a height column that is still acceptable in terms of desired flow rate.
  • this lower volume is provided, with reference to Figure 2B, by an elongated channel 10, that is formed in the lower part of the reservoir 1, for instance, by providing a tongue form 11 in a lower half of the reservoir, the walls of which providing a channel 10 together with a side wall of the reservoir.
  • Dosing ratios for these further embodiments are even more beneficial and are calculated to be about 2.5 for the step-form of Figure 2A and about 2.3 for the elongated channel of Figure 2B.
  • Figure 3 shows some additional reservoir shapes that are further modifications, that are more departed from a conical shape.
  • the embodiments depicted in Figure 3A and Figure 3B have specially designed substantially vertical channels 12, defining a substantially constant column height for the most part of the fluid 2, that is mostly contained in the larger volume 8 situated above these channels 12. Dosing ratios for these embodiments are even closer to the ideal value of 1, thus providing almost constant dose rates.
  • a dosing ratio amounts to 2.
  • the dosing ratio amounts to 1.2, having a first height of 50 mm and a second height of 41 mm.
  • Figure 4 shows a graph of a decreasing dose rate in arbitrary of the various shapes shown in Figure 1.
  • the frustro-conical "Bala" shape in Figure 1C approaches the constant ideal shape relatively best, in that the dose rate is closest to 1 at substantially all times relative to the rectangular shape of Figure 1A and cylindrical shape of Figure 1B.
  • Figure 5 shows a schematic side view of an example of a dispensing device 13 wherein by proper tuning of the viscosity of the fluid 2 in relation to the fluid delivery opening 3, a dosing rate can be accurately determined.
  • Flush water cannot contact the fluid 2 inside the reservoir 1, by proper shielding of an aeration opening 4 by for example a covering cap 14 as illustrated or some other shielding device.
  • Both aeration opening 4 and fluid delivery opening 3 are provided in a common side wall 5, thus providing an elegant way of unsealing both outflow and aeration opening, for example, through use of a tear seal 15 that is pulled out of an downward opening 16 of the covering cap 14.
  • the fluid delivery opening 3 is provided with a waterretaining structure in the form of a recess 17, dimensioned to provide a water film across or near the opening to prevent drying out of the fluid 2.
  • a waterretaining structure in the form of a recess 17, dimensioned to provide a water film across or near the opening to prevent drying out of the fluid 2.
  • the cap 14 preferably generally follows the contour of the reservoir 1 and covers side wall 5 for the most part, leaving a small downward opening for entering some flush water to moisturize the fluid delivery opening 3.
  • the container preferably has a visual appearance that it contains a coloured cleaning fluid.
  • blue cleaning fluids tend to cause stains on the bowl, which are visually unattractive.
  • the reservoir comprises transparant colored walls and wherein the fluid is of a non-coloured transparant nature. Accordingly, the visual appearance of the dispenser 13 is that it contains a coloured fluid, however, in use, the fluid does not provide stains because of it's neutral transparent nature.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
EP06076793.6A 2006-09-27 2006-09-27 WC-Körpchen Not-in-force EP1905906B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06076793.6A EP1905906B1 (de) 2006-09-27 2006-09-27 WC-Körpchen
ES06076793.6T ES2560859T3 (es) 2006-09-27 2006-09-27 Unidad dispensadora para dispensar un fluido refrescante
PCT/NL2007/050467 WO2008039069A2 (en) 2006-09-27 2007-09-25 A dispensing unit for dispensing a freshening fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06076793.6A EP1905906B1 (de) 2006-09-27 2006-09-27 WC-Körpchen

Publications (2)

Publication Number Publication Date
EP1905906A1 true EP1905906A1 (de) 2008-04-02
EP1905906B1 EP1905906B1 (de) 2015-11-11

Family

ID=37813922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06076793.6A Not-in-force EP1905906B1 (de) 2006-09-27 2006-09-27 WC-Körpchen

Country Status (3)

Country Link
EP (1) EP1905906B1 (de)
ES (1) ES2560859T3 (de)
WO (1) WO2008039069A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2105543A1 (de) 2008-03-25 2009-09-30 Sara Lee/DE N.V. Ausgabeeinheit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19915322C1 (de) 1999-04-03 2001-01-18 Henkel Kgaa Nachfüllbares WC-Körbchen für Flüssigreiniger
DE19944318A1 (de) * 1999-09-08 2001-03-15 Ahrens Hans Joachim WC-Tropfdosierer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19915322C1 (de) 1999-04-03 2001-01-18 Henkel Kgaa Nachfüllbares WC-Körbchen für Flüssigreiniger
DE19944318A1 (de) * 1999-09-08 2001-03-15 Ahrens Hans Joachim WC-Tropfdosierer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2105543A1 (de) 2008-03-25 2009-09-30 Sara Lee/DE N.V. Ausgabeeinheit

Also Published As

Publication number Publication date
WO2008039069A2 (en) 2008-04-03
WO2008039069A3 (en) 2008-07-03
ES2560859T3 (es) 2016-02-23
EP1905906B1 (de) 2015-11-11

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