EP1329188B1 - Mehrfachdosierungsspender für Flüssigkeitsadditive für Haushaltsgeräte - Google Patents
Mehrfachdosierungsspender für Flüssigkeitsadditive für Haushaltsgeräte Download PDFInfo
- Publication number
- EP1329188B1 EP1329188B1 EP02026114A EP02026114A EP1329188B1 EP 1329188 B1 EP1329188 B1 EP 1329188B1 EP 02026114 A EP02026114 A EP 02026114A EP 02026114 A EP02026114 A EP 02026114A EP 1329188 B1 EP1329188 B1 EP 1329188B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aperture
- liquid
- apertures
- metering chamber
- additive
- 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 - Lifetime
Links
- 239000000654 additive Substances 0.000 title claims description 28
- 239000007788 liquid Substances 0.000 title claims description 23
- 238000005406 washing Methods 0.000 claims abstract description 12
- 230000000996 additive effect Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims 2
- 230000005484 gravity Effects 0.000 description 7
- 230000000284 resting effect Effects 0.000 description 6
- 238000004851 dishwashing Methods 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
- A47L15/4463—Multi-dose dispensing arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
- A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids
Definitions
- the present invention refers to a multi-dose dispenser of liquid additive products for washing machines, in particular a dispenser of rinsing aid for dishwashing machines.
- rinsing aid which is usually in the form of a viscous liquid with a high foaming capacity, during different phases of a same operation cycle of the machine.
- a dose of rinsing aid it is appropriate for a dose of rinsing aid to be dispensed not only during a rinsing phase preceding the final drying of the washload items, but also during the actual washing of the same washload items in view of improving the soil removal effect.
- the dispenser shall not only have a sufficient holding capacity to dispense an adequately high number of doses, but must also be capable of accurately metering each single dose of liquid additive. Accordingly, the dispenser must include a multi-dose reservoir for storing said adequate amount of liquid additive, as well as means adapted to repeatedly measure and deliver the same additive in the form of volumetrically metered amounts.
- the solution consisting in the rinsing aid being metered through a time-controlled delivery is in fact quite out of the question, since the density of the rinsing aid itself is strongly variable depending on the different operating temperatures and the different kinds of additive used.
- the proposal has been made of providing the rinsing aid dispenser with a multi-dose rinsing-aid reservoir whose bottom is in communication, via a filling aperture, with a volumetric metering chamber situated therebelow, the bottom of which is in turn capable of communicating fluidly with the washing vessel of a washing machine via a dispensing aperture.
- a moving double-shutter member controlled by an electromagnet is adapted to be switched between a first and a second position, in which it shuts the sole filling aperture and the sole dispensing or delivery aperture, respectively.
- the liquid additive stored in the reservoir is allowed to flow by gravity to fill said metering chamber, whereas in said second position the amount of liquid additive contained in the metering chamber is allowed to be dispensed, i.e. delivered into the washing vessel, by gravity.
- DE 2239484 discloses a multiple-dose dispenser provided with three chambers and a plurality of actuating elements, said elements actuating corresponding valves at the same time, following the discharge of liquid from an intermediate chamber.
- FR-A-2515220 discloses a multi-dose dispenser corresponding to the preamble of the independent claim.
- a further purpose of the present invention is to provide a multi-dose dispenser of liquid additives of the above cited kind, which is capable of operating correctly and in an accurate manner without any electrically energized actuating means being actually required to ensure the operation of said dispenser.
- the additive dispenser can be contained within a housing 1 which accommodates at least a reservoir 2 adapted to be filled, via an appropriate upper aperture 3, with a substantial multi-dose amount of liquid additive, such as for instance a rinsing aid for dishwashing machines.
- the bottom of the reservoir 2 is capable of fluidly communicating, via a filling aperture 4, with a volumetric metering chamber 5 situated therebelow, which in turn comprises, in the bottom thereof, an aperture 6 for dispensing such an additive.
- the latter can then be delivered into the washing vessel of the dishwashing machine via an aperture 7 provided in the bottom of the housing 1.
- the filling aperture 4 and the dispensing aperture 6 are associated to respective shutter valves 8 and 9, respectively, which are distinct and capable of being actuated in a differentiated manner, as this shall be described in a more detailed manner further on.
- the valve 8 is connected to a return spring 10 of the cap or similar type, or the like, which normally keeps it at a distance from the aperture 4, which is therefore open in the resting position thereof shown in Figure 1 .
- the valve 9 is in turn associated to a thrust spring 11, or the like, which normally keeps it in a position in which it closes the aperture 6.
- valves 8, 9 are substantially juxtaposed, i.e. provided in a substantial side-by-side arrangement, and are associated to an actuator 12, which may be of an electromagnetic kind or - preferably - of a thermally actuated kind.
- the actuator 12 comprises a moving member 13 adapted to act on the valves 8, 9 via a lever 15 that is provided with respective pushing means 14, 16.
- a return spring 17 keeps said pushing means 14, 16 of the lever 15 in a condition in which they are substantially disengaged from the valves 8, 9.
- the liquid stored in the reservoir 1 is able to flow by gravity into the metering chamber 5, thereby filling up the inner volume thereof.
- said metering chamber 5 may be provided with a vent pipe 18.
- the return spring 17 causes the valve 9 to move back into the position in which it closes the dispensing aperture 6 ( Figure 2 ) and the return spring 10 then causes the valve 8 to move back into its resting position in which it disengages from the aperture 4 ( Figure 1 ). It is just and solely at this point that the liquid stored in the reservoir 2 is able to flow and fill by gravity the metering chamber 5, thereby preventing it from flowing out through the aperture 6 as the valves 8, 9 are changing over.
- liquid-additive dispenser may be the subject of a number of modifications without departing from the scope of the present invention as set out in the claims.
- the volumetric metering chamber 5 may be provided in correspondence of a piston 19 that is capable of sliding tightly with respect to a cylinder 20 arranged below the reservoir 2.
- the metering chamber 5 is delimited within the cylinder 20 by two head-walls 21, 22 of the piston, each one of which preferably cooperates with the side surface of the cylinder 20 through respective sealing rings 23, 24 or the like.
- the filling aperture 4 and the dispensing aperture 6 are provided in correspondence of the side surface of the cylinder 20 and the axial distance from each other is equal to or greater than the axial distance of the two head-walls 21 and 22 of the piston from each other.
- the piston itself is normally kept in its raised resting position shown in Figure 4 , in which the metering chamber 5 is in communication with the multi-dose reservoir 2 via the aperture 4 and, therefore, is able to fill up with liquid additive, thanks also to the provision of the vent tube 18.
- the piston 19 is capable of being operated by the actuator 12 via a connection 25 provided with a return spring 17.
- the actuator 12 When the actuator 12 is operated, the moving member 13 thereof acts on said connection 25 so as to cause the piston 19 to slide towards a lower end-of-stroke, until the dispenser is brought into the transient condition illustrated in Figure 5 .
- the walls 21 and 22 of the piston are comprised between the apertures 4 and 6, which are therefore unable to communicate with the metering chamber 5, with respect to which they are in fact closed. Also in the case of the embodiment of the invention, therefore, the occurrence of a transient condition in which both apertures 4 and 6 are opened at the same time, under a resulting uncontrolled leakage of liquid from the reservoir 2 via the chamber 5, is effectively avoided.
- the apertures 4 and 6 are in the first place both in their closed condition ( Figure 5 ) and the aperture 4 is then cleared axially by the wall 21 of the piston 19 passing therebeyond, so that it is now able to communicate with the metering chamber 5. It is just and solely at this point that the liquid stored in the reservoir 2 is able to flow by gravity to fill up the metering chamber 5, thereby preventing it from flowing out through the aperture 6 as the walls 21 and 22 of the piston 19 are moving during a change-over stroke thereof.
- said piston walls are substantially equivalent to the valve members 8, 9 that have been described previously with reference to Figures 1 to 3 .
Landscapes
- Washing And Drying Of Tableware (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Devices For Dispensing Beverages (AREA)
- Accessories For Mixers (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Detergent Compositions (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Cleaning By Liquid Or Steam (AREA)
Claims (4)
- Mehrfachdosierungs-Ausgabevorrichtung für flüssige Zusatzmittel für Waschmaschinen, die mindestens ein Mehrfachdosierungsfach (2) zur Aufnahme des flüssigen Zusatzmittels umfasst, das geeignet ist, über eine erste, normalerweise offene Einfüllöffnung (4) mit einer Volumendosierungskammer (5) zu kommunizieren, die ihrerseits mindestens eine normalerweise geschlossene Ausgabeöffnung (6) aufweist, ferner Klappenmittel (8, 9; 21, 22), die von Betätigungsmitteln (10, 11) gesteuert werden, um die Öffnungen abwechselnd zu öffnen und zu schließen, so dass durch die zweite Öffnung vorbestimmte Mengen von Zusatzmitteln geliefert werden, die durch die erste Öffnung in die Dosierungskammer eingelassen werden, dadurch gekennzeichnet, dass die Klappenmittel (8, 9; 21, 22) für jede Öffnung (4, 6) ein spezifisches Ventilmittel umfassen und dass die Klappenmittel so funktionieren, dass sie die zweite Öffnung (6) erst dann öffnen, nachdem die erste Öffnung (4) geschlossen worden ist, und die erste Öffnung (4) erst dann wieder öffnen, nachdem die zweite Öffnung (6) geschlossen worden ist, wobei das Ventilmittel (8, 9) geeignet ist, auf differenzierte Weise von einem thermischen Betätigungsmittel (12) über ein Übertragungsmittel (14, 16) betrieben zu werden, wobei das Obertragungsmittel einen Hebel (15) aufweist, der mit dem thermischen Betätigungsmittel (12) und den Ventilmitteln (8, 9) verbunden ist, wobei die Ventilmittel in einer im wesentlichen seitlich benachbarten Anordnung angeordnet sind.
- Ausgabevorrichtung für flüssige Zusatzmittel gemäß Anspruch 1, dadurch gekennzeichnet, dass das thermische Betätigungsmittel ein thermisch betätigtes Element (12) umfasst, das geeignet ist, die Klappenmittel (8, 9; 21, 22) zwischen den jeweiligen Stellungen zum Schließen und Öffnen der Öffnungen (4, 6) hin und her zu schalten.
- Ausgabevorrichtung für flüssige Zusatzmittel gemäß Anspruch 1, dadurch gekennzeichnet, dass die Volumendosierungskammer (5) in Verbindung mit einem Kolben (19) vorgesehen ist, der sich unter der Steuerung des Betätigungsmittels (12) nahe an einem Zylinder (20) entlang bewegt, der unter dem Fach (2) angeordnet ist, wobei die Dosierungskammer (5) innerhalb des Zylinders (20) von zwei Wänden (21, 22) des Kolbens begrenzt wird.
- Ausgabevorrichtung für flüssige Zusatzmittel gemäß Anspruch 3, dadurch gekennzeichnet, dass die Öffnungen (4, 6) in Entsprechung zur Seitenfläche des Zylinders (20) vorgesehen sind und die Axialdistanz voneinander größer oder gleich der Axialdistanz der Wände (21, 22) des Kolbens (19) voneinander ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPN20020001U | 2002-01-16 | ||
IT2002PN000001U ITPN20020001U1 (it) | 2002-01-16 | 2002-01-16 | Distributore multidose di additivi liquidi per macchine lavatrici. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1329188A1 EP1329188A1 (de) | 2003-07-23 |
EP1329188B1 true EP1329188B1 (de) | 2009-09-09 |
Family
ID=11453318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02026114A Expired - Lifetime EP1329188B1 (de) | 2002-01-16 | 2002-11-23 | Mehrfachdosierungsspender für Flüssigkeitsadditive für Haushaltsgeräte |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1329188B1 (de) |
AT (1) | ATE442077T1 (de) |
DE (1) | DE60233632D1 (de) |
IT (1) | ITPN20020001U1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005059343B4 (de) | 2005-12-09 | 2007-12-06 | Miele & Cie. Kg | Verfahren zum Dosieren von Wirkstoffen in den Spülbehälter einer Haushaltsgeschirrspülmaschine |
EP1943937A1 (de) * | 2007-01-10 | 2008-07-16 | Electrolux Home Products Corporation N.V. | Geschirrspülmaschine |
EP3059480B1 (de) * | 2008-07-15 | 2018-06-06 | Henkel AG & Co. KGaA | Dosiergerät |
EP2296520B2 (de) * | 2008-07-15 | 2022-10-12 | Henkel AG & Co. KGaA | Dosiersystem für eine geschirrspülmaschine |
ES2768023T3 (es) * | 2009-02-18 | 2020-06-19 | Henkel Ag & Co Kgaa | Aparato de dosificación con cámara de dosificación |
GB0909363D0 (en) | 2009-06-01 | 2009-07-15 | Reckitt Benckiser Nv | Detergent dispensing device |
KR20130081114A (ko) * | 2012-01-06 | 2013-07-16 | 삼성전자주식회사 | 세제공급장치 및 이를 가지는 세탁기 |
US10760199B2 (en) | 2017-12-08 | 2020-09-01 | Whirlpool Corporation | Household appliance with a bulk dispenser |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2239484C3 (de) * | 1972-08-11 | 1979-01-04 | Helmut Bohlaender Kg, 7800 Freiburg | Druckgesteuerte Dosiervorrichtung für Flüssigkeiten |
IT8153730V0 (it) * | 1981-10-22 | 1981-10-22 | Elbi Int Spa | Dispositivo per erogare quantita dosate di un liquido additivo ad una macchina lavatrice |
DE19720820A1 (de) * | 1997-05-16 | 1998-11-19 | Aweco Kunststofftech Geraete | Verfahren und Dosiervorrichtung zum Betrieb einer Haushalts-Geschirrspülmaschine |
FR2804594A1 (fr) * | 2000-02-04 | 2001-08-10 | Esswein Sa | Distributeur mecanique de produit pour appareil electromenager |
-
2002
- 2002-01-16 IT IT2002PN000001U patent/ITPN20020001U1/it unknown
- 2002-11-23 DE DE60233632T patent/DE60233632D1/de not_active Expired - Fee Related
- 2002-11-23 EP EP02026114A patent/EP1329188B1/de not_active Expired - Lifetime
- 2002-11-23 AT AT02026114T patent/ATE442077T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE442077T1 (de) | 2009-09-15 |
EP1329188A1 (de) | 2003-07-23 |
ITPN20020001U1 (it) | 2003-07-16 |
DE60233632D1 (de) | 2009-10-22 |
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