EP0140692B1 - Abgabevorrichtung für Klosettspülkasten - Google Patents

Abgabevorrichtung für Klosettspülkasten Download PDF

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Publication number
EP0140692B1
EP0140692B1 EP84307407A EP84307407A EP0140692B1 EP 0140692 B1 EP0140692 B1 EP 0140692B1 EP 84307407 A EP84307407 A EP 84307407A EP 84307407 A EP84307407 A EP 84307407A EP 0140692 B1 EP0140692 B1 EP 0140692B1
Authority
EP
European Patent Office
Prior art keywords
compartment
dispenser
water
substance
cistern
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.)
Expired
Application number
EP84307407A
Other languages
English (en)
French (fr)
Other versions
EP0140692A2 (de
EP0140692A3 (en
Inventor
Frank Jones
Stephen Norman Kay
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever 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 Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to AT84307407T priority Critical patent/ATE35008T1/de
Publication of EP0140692A2 publication Critical patent/EP0140692A2/de
Publication of EP0140692A3 publication Critical patent/EP0140692A3/en
Application granted granted Critical
Publication of EP0140692B1 publication Critical patent/EP0140692B1/de
Expired legal-status Critical Current

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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
    • E03D9/033—Devices placed inside or dispensing into the cistern
    • E03D9/038—Passive dispensers, i.e. without moving parts
    • 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
    • E03D2009/024—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing using a solid substance

Definitions

  • This invention relates to a dispenser for partial immersion in a lavatory cistern.
  • Devices for colouring and perfuming the flush water of lavatories are becoming increasingly popular. They are generally of two types: those which are designed to clip inside the rim of the lavatory bowl itself and those which are intended to be at least partly immersed in the flush water in the cistern. This invention relates to the latter type.
  • European patent Nos '1671, '4990 and '4991 also describe dispensers of this type.
  • a further feature which is said to be of importance in the latter patents is that the bleach component is isolated from detergent/dyestuff and from the cistern water until the moment the cistern is flushed.
  • the dispensers required for this are relatively sophisticated in two respects. First of all, they require careful positioning in the cistern, relative to the upper level of flush water. Secondly, they are designed to operate at least partially by means of siphonic action rather than by direct displacement of the solution to be dispensed into the flush water.
  • GB-A-2090884 describes a dispensing device for dispensing a substance into flush water in a lavatory cistern having a lower chamber holding a water soluble treatment material having an outlet at one end of a conduit extending downwardly from the top of the chamber, and an upper chamber, a sinuous conduit connecting the bottom of the upper chamber with the top of the lower chamber.
  • This dispenser relies upon air locks when the cistern remains full to prevent mixing between the contents of the upper chamber and the lower chamber and to prevent the contents of the lower chamber passing into the surrounding water.
  • the present invention provides a dispenser for dispensing one or more substances into flush water in a lavatory cistern comprising
  • the dispenser is designed so that the reservoir is provided with an upwardly extending air bleed which, when the dispenser is located in the lavatory cistern, extends above the surface of the flush water.
  • the existence of the vertically extending air bleed allows the dispenser to be positioned with wide tolerance relative to the surface of the flush water in the cistern. This is advantageous since it is our experience that cisterns do not fill consistently to the same level owing to the crude nature of domestic ball valves and to variations in water pressure.
  • the opening of the air bleed may be positioned below the surface if desired.
  • the upper end of the air bleed is sealable, for example with a floating ball which seals a circular aperture of smaller diameter than the ball itself.
  • the arrangement of the reservoir upstream of the compartment holding the substance to be dispensed has the consequence that water in the compartment, which is converted to a solution during the periods between flushes, is displaced by water in the reservoir as the cistern water falls during the flush, and a positive hydrostatic pressure ensures that problems produced by viscous solution in the compartment, or by breakup of the block of substance, are minimised.
  • the volume of the reservoir controls the volume of solution displaced from the dispenser on flushing. If the reservoir volume is smaller than the volume of solution in the compartment, then that ensures that some relatively concentrated solution is always left in the dispenser so that even if the lavatory is flushed and re-flushed in rapid succession, some of the substance in the compartment will always be dispensed.
  • the aperture to the compartment is at one end of an inverted 'U' . shaped conduit, the other end communicating with the bottom of the compartment.
  • the diameter of the aperture end of the conduit is sufficient to permit air to pass into the compartment while flush water in the cistern is close to its minimum level, to fill the vacuum left in the compartment by partial dissolution of the substance being dispensed.
  • the question of ingress of air is important since unless it is arranged the partial vacuum formed in the substance compartment can assist the block of substance to stick to the walls of the compartment.
  • the compartment is formed with a vertically extending channel on one or both sides, permitting passage of air into the upper part of the compartment, the substance to be dispensed being presented from contacting the side of the compartment by the formation of defining the edge of the channel.
  • the compartment(s) and the associated resevoir(s) are formed on the same side of the backing sheet.
  • the dispenser is formed with two compartments with associated reservoirs that is to say that the dispenser is doubled.
  • One compartment can then contain a solid disinfectant block capable of delivering chlorine and the other a detergent cake, a solid colorant or a perfume sorbed on a solid substance, or any combination of these substances.
  • active chlorine-containing compounds are so chemically reactive careful formulation will be required before organic materials can be combined with them.
  • the solid disinfectant block may be either cast or formed from granules. Suitable substances for forming such blocks are calcium hypochlorite or various sodium salts of di- or tri-chlorocyanuric acid.
  • the water ingress/egress aperture(s) preferably communicate with the compartment(s) via vertically extending conduits, and one of the advantages of the dispenser is that it is possible to predetermine the extent to which the substances in the compartments diffuse into the flush water in the cistern by choice of length of the conduit.
  • the compartments of which contain dyestuff and disinfectant it is possible to ensure that the dyestuff diffuses to a greater extent than the disinfectant by extending the conduit communicating with the disinfectant compartment to a level closer to that defined by the flush water surface than the conduit communicating with the dyestuff compartment. In other words to arrange that there is a greater hydrostatic pressure at the dyestuff aperture than there is at the disinfectant one.
  • the dispenser of the invention may be manufactured from any inert, water-impermeable material it is preferred that it is made from a thermoplastic material such as polyvinylchloride or polyethylene. Desirably this can be done by vacuum forming and the attachments between the backing sheet and the formed sheet can be made by thermal or high-frequency welding.
  • a thermoplastic material such as polyvinylchloride or polyethylene. Desirably this can be done by vacuum forming and the attachments between the backing sheet and the formed sheet can be made by thermal or high-frequency welding.
  • the dispenser consists of two sheets of plastics material, a backing sheet (10), not shown, and a formed sheet (11), welded together along their outer edges.
  • the backing sheet (10) is laminar.
  • the formed sheet (11) is formed, for example by vacuum moulding with a number of depressions, channels and apertures which will be described in more detail later, and the edges of each of these features are continuously welded to the backing sheet (10) so as to form a number of compartments and conduits.
  • the formed sheet (11) is formed with a water inlet/outlet aperture (12) which constitutes the end of a vertically extending inlet/outlet conduit (13).
  • the conduit (13) leads to, and communicates with, an opening (15) to a generally rectangular disinfectant block compartment (14) which contains a solid block of a granular, water-soluble chlorine-containing disinfectant (16).
  • the disinfectant block compartment (14) is provided with a second opening (17) at a lower level than opening (15), which communicates with vertically extending reservoir conduit (18).
  • This conduit leads to a reservoir (19) located at a higher level than the disinfectant block compartment, which is a generally rectangular compartment of similar volume to the compartment (14).
  • the reservoir conduit (18) communicates with the reservoir opening (20).
  • the upper face (21) of the reservoir (19) is formed with an opening (22) which communicates with a_ narrow, vertically extending open-ended capillary air bleed (23).
  • FIG. 2 it can be seen how the compartment and conduits described are formed between the backing sheet (10) and the formed sheet (11), this being the general manner of construction of all the devices shown in figures 1 to 9.
  • the water inlet/outlet aperture (12) forming the end of inlet/outlet conduit (13) can be seen in plan.
  • the upper face (21) of reservoir (19) partly masks disinfectant block compartment (14), but reservoir conduit (18) is visible. Welds between the backing sheet (10) and the formed sheet (11) are shown.
  • each pair of inlet/outlet conduits (13), each pair of compartments (14), (24) and each pair of reservoir conduits (18) is filled either with water or with a more or less concentrated solution of disinfectant or of the detergent and dyestuff mixtures.
  • the cistern is at this minimum level for only a short period, as it immediately begins to fill, and as soon as it reaches the level of the water inlet/outlet apertures (12) as shown in Figure 4, it begins to displace the solution already in the apparatus and push it through the system. In fact, fresh water enters the inlet/outlet apertures (12) and displaces the solution originally there into compartment (14) or (24), which in turn displaces solution in the reservoir conduits (18) into the reservoirs (19) and so into the capillary air bleed (23).
  • the level of water/solution inside the apparatus is the same as that in the cistern, ignoring any capillary effects, since the air bleed (23) is both open to the atmosphere and above the maximum level to which the water rises.
  • the cistern will often remain at this level for some period of time, during which water in compartments (14) and (24), in contact with either a disinfectant block or a detergent/dyestuff block will be converted into a relatively concentrated solution.
  • the dispenser shown is designed to dispense only one substance or a single mixture of substances. As in the embodiments described above, it consists of a planar backing sheet (not shown) and a formed sheet (11) which between them define a compartment (14), a reservoir (19) and associated apertures and pipework.
  • the right hand lower corner of the compartment (14) as shown in Figure 6 is in communication with reservoir conduit (18) which leads to the lower right hand corner of reservoir (19).
  • the reservoir (19) is formed with a cylindrical air bleed (23) containing a buoyant ball, free to rise and fall within the bleed.
  • the surfactant cake (29) is exposed to water in compartment (14) and a solution containing surfactant, pigment and perfume is formed.
  • buoyant ball (30) seals against aperture (31) in air bleed (23), this dispenser can be totally immersed in the cistern water.
  • FIG 7 there are a number of similarities between the dispenser shown in this figure and that shown in Figures 1 and 2 which will not be re-described. There are also, however, a large number of differences.
  • the first of these is that although the dispenser is doubled, in that it comprises disinfectant solution and detergent solution dispensing sub-assemblies, these are not mirror images of each other, but of a different design.
  • the detergent solution dispensing sub-assembly (32) is of a similar design to the dispenser shown in Figure 6, except that in place of the air bleed fitted with a ball-valve arrangement, the sub-assembly is provided with a capillary air bleed (23) similar to that of the dispenser shown in Figure 1.
  • the disinfectant solution dispensing sub-assembly (33) also differs from the dispenser of Figure 6 in the same way, but has the additional difference that the upper portion (34) of the inlet/outlet conduit (13) is joined with the capillary air bleed (23).
  • the other difference between the device shown in Figure 7 is in the design of the openings (15 and 17) to the disinfectant block compartment (14) and the detergent block compartment (24). In the devices shown in Figures 1 to 6 these openings are of small diameter. In the device shown in Figure 7 the openings are larger, the diameter being great enough to allow air to bubble into the disinfectant and detergent compartments (14) and (24) during dispensing.
  • FIG 8 the embodiment of the dispenser shown in this figure is quite similar to that shown in Figure 7, but has been somewhat simplified. The most obvious difference is that whereas in Figure 7 the device is provided with two capillary air bleeds, that shown in Figure 8 has one extended bleed (23) and one fore-shortened one (34).
  • the second difference between the two dispensers concerns the design and positioning of the water inlet/outlet apertures and conduits.
  • the water inlet/outlet conduit (13) in both halves of the apparatus is in the form of an inverted U, the inlet/outlet apertures (12) being flush with the bottom of the disinfectant block and detergent block compartments (14) and (24).
  • FIG 9 the embodiment shown is generally similar to that shown in figure 8, except that the left hand dispenser is a mirror image of that in figure 8, and except that the upwardly extending capillary air bleed (23) has been removed so that both halves of the double dispenser are mechanically equivalent.
  • FIG 9 Two features of the double dispenser are shown in figure 9 which are not shown in the other figures.
  • the first of these is a vertically extending retainer (37).
  • This is in the form of an open ended tube formed between the backing sheet (10) and the formed sheet (11), only the latter being visibte in figure 9.
  • This retainer is intended to retain the elongated portion of a hanger (not shown) for hanging the double dispenser within a lavatory cistern.
  • the vertical location of the device in the cistern can then be adjusted by sliding the hanger within the retainer (37). This arrangement is one which is adopted by lavatory cistern dispensers of the prior art.
  • the second feature shown in figure 9 is a detail of a side of compartments (14) and (24).
  • the formed sheet (11) is welded to the back sheet (10) along the line of formation (36), leaving a channel (35) between the side wall and the formation communicating at each end with the compartment through which air can freely pass.
  • the purpose of this channel is to ensure that there exists a passage by which air can reach the upper part of the compartment, experience having shown that if the substance to be dispensed occupies the whole width of the lower part of the compartment the block can swell and join within it. A free passage for air helps to prevent this, and in any event reduces the area of contact between the block and the compartment wall.

Landscapes

  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Epidemiology (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Toilet Supplies (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Claims (9)

1. Abgabevorrichtung zur Abgabe einer oder mehrerer Substanzen in das Spülwasser in einem Klosettspülkasten umfassend
(a) ein Abteil (14,24), welches eine abzugebende feste wasserlösliche oder wasserdispergierbare Substanz (16, 29) enthält,
(b) mindestens eine Öffnung (12) in dem Abteil, welche den Eintritt von Wasser oder Verdünnungslösung zum Auflösen der Substanz zuläßt und welche den Austritt einer Lösung oder Suspension der Substanz zuläßt,
(c) einen Speicher (19), der mit dem Abteil kommuniziert, und
(d) Einrichtungen zurverstellbaren Fixierung der Abgabevorrichtung in dem Spülkasten, dadurch gekennzeichnet, daß der Speicher mit dem Abteil Über einen Kanal (18), der sich vertikal vom Boden des Abteils zum Boden des Speichers erstreckt, in Verbindung steht, um zuzulassen, daß sich Wasser oder Lösung im Speicher in das Abteil hinein entleert wenn Spülwasser in dem Klosettspülkasten von einem oberen Speicherungsniveau auf ein unteres, gespültes Niveau fällt.
2. Abgabevorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Speicher mit einer sich nach oben erstreckenden Entlüftung (23) ausgestattet ist.
3. Abgabevorrichtung nach einem dervorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich die Öffnung (12) in dem Abteil an einem Ende eines umgekehrten "U". förmigen Kanals (B) befindet und das andere Ende mit dem Boden des Abteils in Verbindung steht.
4. Abgabevorrichtung nach einem dervorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Durchmesser der Öffnung des "U"-förmigen Kanals ausreichend ist um zuzulassen, daß Luft in das Abteil strömt, während Spülwasser in dem Spülkasten nahe an seinem Mindestniveau ist, um das Vakuum, welches in dem Abteil durch teilweise Auflösung der abzugebenden Substanz übrig bleibt, zu füllen.
5. Abgabevorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das Abteil mit einem sich vertikal erstreckendem Kanal (35) auf einer Seite gestaltet ist, der die Einleitung von Luft zuläßt, wobei die abzugebende Substanz durch die den Rand des Kanals definierende Gestaltung (36) gehindert ist die Seite des Abteils zu berühren.
6. Abgabevorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das Abteil mit einem sich vertikal erstreckenden Kanal auf beiden Seiten gestaltet ist.
7. Abgabevorrichtung nach einem dervorhergehenden Ansprüche, dadurch gekennzeichnet, daß die abzugebende Substanz ein Desinfektionsmittel enthält.
8. Abgabevorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die abzugebende Substanz ein Färbemittel oder ein Parfüm enthält.
9. Doppelte Abgabevorrichtung, dadurch gekennzeichnet, daß sie ein'paar Abgabevorrichtungen nach Anspruch 1 umfaßt, wobei eine ein Desinfektionsmittel und die andere ein Detergens, ein Färbemittel, ein Parfüm oder irgendeines dieser Materialien in Kombination enthält.
EP84307407A 1983-10-28 1984-10-26 Abgabevorrichtung für Klosettspülkasten Expired EP0140692B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84307407T ATE35008T1 (de) 1983-10-28 1984-10-26 Abgabevorrichtung fuer klosettspuelkasten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8328919 1983-10-28
GB838328919A GB8328919D0 (en) 1983-10-28 1983-10-28 Lavatory cistern dispenser

Publications (3)

Publication Number Publication Date
EP0140692A2 EP0140692A2 (de) 1985-05-08
EP0140692A3 EP0140692A3 (en) 1986-04-16
EP0140692B1 true EP0140692B1 (de) 1988-06-08

Family

ID=10550914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84307407A Expired EP0140692B1 (de) 1983-10-28 1984-10-26 Abgabevorrichtung für Klosettspülkasten

Country Status (8)

Country Link
EP (1) EP0140692B1 (de)
JP (1) JPS60168834A (de)
AT (1) ATE35008T1 (de)
AU (1) AU574730B2 (de)
DE (1) DE3471963D1 (de)
GB (1) GB8328919D0 (de)
NO (1) NO844279L (de)
ZA (1) ZA848348B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165273B (en) * 1984-07-20 1987-12-02 Jeyes Ltd Dispensing container for immersion in toilet cistern
GB8603440D0 (en) * 1986-02-12 1986-03-19 Unilever Plc Solid bleaching block
AU621010B2 (en) * 1989-11-30 1992-02-27 Victor Edward Wilson A dispensing device for a toilet cistern
US5774903A (en) * 1991-05-20 1998-07-07 Sara Lee/De N.V. Device for dispensing a chemical composition into a toilet tank
GB9605246D0 (en) 1996-03-13 1996-05-15 Kodak Ltd Photographic processing solutions

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1219200A (en) * 1968-05-29 1971-01-13 Reckitt & Colmann Prod Ltd Improvements in or relating to dispensing containers for use in flushing cisterns
LU79505A1 (de) * 1978-04-24 1979-11-07 Globol Werk Klosettspuelwasserfaerber
GB2090884B (en) * 1980-12-19 1984-09-12 Gabriel Robert Ward Dispensing device for flushing cistern
US4419771A (en) * 1982-02-08 1983-12-13 The Drackett Company Passive dispenser
US4459710A (en) * 1982-10-18 1984-07-17 The Drackett Company Passive dispenser

Also Published As

Publication number Publication date
EP0140692A2 (de) 1985-05-08
EP0140692A3 (en) 1986-04-16
JPH0429819B2 (de) 1992-05-20
AU574730B2 (en) 1988-07-14
ZA848348B (en) 1986-06-25
AU3463384A (en) 1985-05-09
GB8328919D0 (en) 1983-11-30
NO844279L (no) 1985-04-29
ATE35008T1 (de) 1988-06-15
DE3471963D1 (en) 1988-07-14
JPS60168834A (ja) 1985-09-02

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