EP1329188A1 - Distributeur multidose pour des additifs liquides pour appareils électroménagers - Google Patents

Distributeur multidose pour des additifs liquides pour appareils électroménagers Download PDF

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Publication number
EP1329188A1
EP1329188A1 EP02026114A EP02026114A EP1329188A1 EP 1329188 A1 EP1329188 A1 EP 1329188A1 EP 02026114 A EP02026114 A EP 02026114A EP 02026114 A EP02026114 A EP 02026114A EP 1329188 A1 EP1329188 A1 EP 1329188A1
Authority
EP
European Patent Office
Prior art keywords
aperture
liquid
additive
metering chamber
apertures
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
EP02026114A
Other languages
German (de)
English (en)
Other versions
EP1329188B1 (fr
Inventor
Daniele Favaro
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp 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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Publication of EP1329188A1 publication Critical patent/EP1329188A1/fr
Application granted granted Critical
Publication of EP1329188B1 publication Critical patent/EP1329188B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.
  • 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.
  • liquid-additive dispenser may be the subject of a number of modifications without departing from the scope of the present invention.
  • 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)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP02026114A 2002-01-16 2002-11-23 Distributeur multidose pour des additifs liquides pour appareils électroménagers Expired - Lifetime EP1329188B1 (fr)

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 true EP1329188A1 (fr) 2003-07-23
EP1329188B1 EP1329188B1 (fr) 2009-09-09

Family

ID=11453318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02026114A Expired - Lifetime EP1329188B1 (fr) 2002-01-16 2002-11-23 Distributeur multidose pour des additifs liquides pour appareils électroménagers

Country Status (4)

Country Link
EP (1) EP1329188B1 (fr)
AT (1) ATE442077T1 (fr)
DE (1) DE60233632D1 (fr)
IT (1) ITPN20020001U1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1943937A1 (fr) * 2007-01-10 2008-07-16 Electrolux Home Products Corporation N.V. Lave-vaisselle
WO2010006761A2 (fr) * 2008-07-15 2010-01-21 Henkel Ag & Co. Kgaa Système de dosage pour un lave-vaisselle
WO2010094430A3 (fr) * 2009-02-18 2011-02-03 Henkel Ag & Co. Kgaa Doseur à chambre de dosage
US9238885B2 (en) 2009-06-01 2016-01-19 Reckitt Benckiser N.V. Detergent dispensing device
EP1956961B1 (fr) 2005-12-09 2016-03-09 Miele & Cie. KG Lave-vaisselle domestique avec un dispositif de dosage et procede de dosage de substances actives
EP3059480A1 (fr) * 2008-07-15 2016-08-24 Henkel AG & Co. KGaA Appareil de dosage
EP2612962A3 (fr) * 2012-01-06 2018-01-17 Samsung Electronics Co., Ltd Appareil d' approvisionnement en détergent et machine à laver dotée de celui-ci
US10760199B2 (en) 2017-12-08 2020-09-01 Whirlpool Corporation Household appliance with a bulk dispenser

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2239484A1 (de) * 1972-08-11 1974-02-21 Helmut Bohlaender Kg Druckgesteuerte dosiervorrichtung fuer fluessigkeiten
FR2515220A1 (fr) * 1981-10-22 1983-04-29 Elbi Int Spa Dispositif pour delivrer une quantite dosee d'un additif liquide dans une machine a laver
EP1122351A1 (fr) * 2000-02-04 2001-08-08 Esswein S.A. Distributeur mécanique de produit pour appareil électroménager
US6338351B1 (en) * 1997-05-16 2002-01-15 Aweco Appliance Systems Gmbh & Co. Kg Method and metering device for operating a household dishwasher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2239484A1 (de) * 1972-08-11 1974-02-21 Helmut Bohlaender Kg Druckgesteuerte dosiervorrichtung fuer fluessigkeiten
FR2515220A1 (fr) * 1981-10-22 1983-04-29 Elbi Int Spa Dispositif pour delivrer une quantite dosee d'un additif liquide dans une machine a laver
US6338351B1 (en) * 1997-05-16 2002-01-15 Aweco Appliance Systems Gmbh & Co. Kg Method and metering device for operating a household dishwasher
EP1122351A1 (fr) * 2000-02-04 2001-08-08 Esswein S.A. Distributeur mécanique de produit pour appareil électroménager

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1956961B1 (fr) 2005-12-09 2016-03-09 Miele & Cie. KG Lave-vaisselle domestique avec un dispositif de dosage et procede de dosage de substances actives
EP1943937A1 (fr) * 2007-01-10 2008-07-16 Electrolux Home Products Corporation N.V. Lave-vaisselle
WO2010006761A2 (fr) * 2008-07-15 2010-01-21 Henkel Ag & Co. Kgaa Système de dosage pour un lave-vaisselle
WO2010006761A3 (fr) * 2008-07-15 2010-03-18 Henkel Ag & Co. Kgaa Système de dosage pour un lave-vaisselle
EP3059480A1 (fr) * 2008-07-15 2016-08-24 Henkel AG & Co. KGaA Appareil de dosage
WO2010094430A3 (fr) * 2009-02-18 2011-02-03 Henkel Ag & Co. Kgaa Doseur à chambre de dosage
US9238885B2 (en) 2009-06-01 2016-01-19 Reckitt Benckiser N.V. Detergent dispensing device
EP2612962A3 (fr) * 2012-01-06 2018-01-17 Samsung Electronics Co., Ltd Appareil d' approvisionnement en détergent et machine à laver dotée de celui-ci
US10760199B2 (en) 2017-12-08 2020-09-01 Whirlpool Corporation Household appliance with a bulk dispenser

Also Published As

Publication number Publication date
EP1329188B1 (fr) 2009-09-09
ITPN20020001U1 (it) 2003-07-16
DE60233632D1 (de) 2009-10-22
ATE442077T1 (de) 2009-09-15

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