EP0125627A2 - Distributeur de détergent pour une machine à laver le linge - Google Patents

Distributeur de détergent pour une machine à laver le linge Download PDF

Info

Publication number
EP0125627A2
EP0125627A2 EP84105256A EP84105256A EP0125627A2 EP 0125627 A2 EP0125627 A2 EP 0125627A2 EP 84105256 A EP84105256 A EP 84105256A EP 84105256 A EP84105256 A EP 84105256A EP 0125627 A2 EP0125627 A2 EP 0125627A2
Authority
EP
European Patent Office
Prior art keywords
supply unit
compartments
container
water
detergent supply
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
EP84105256A
Other languages
German (de)
English (en)
Other versions
EP0125627A3 (en
EP0125627B1 (fr
Inventor
Silvano Cimetta
Olindo Regazzo
Gabriele Soligo
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.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Priority to AT84105256T priority Critical patent/ATE37207T1/de
Publication of EP0125627A2 publication Critical patent/EP0125627A2/fr
Publication of EP0125627A3 publication Critical patent/EP0125627A3/en
Application granted granted Critical
Publication of EP0125627B1 publication Critical patent/EP0125627B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents

Definitions

  • the present invention relates to a detergent supply unit for a laundry washing machine for the supply of particulate and/or liquid detergents and of additives to the washing tub of the machine.
  • laundry washing machines are provided with a detergent supply unit disposed in an upper portion of the machine and formed with a number of separate compartments for containing additives and detergent in particulate and/ /or liquid form, said compartments being connected to a conduit leading to the washing tub.
  • the detergent supply unit is provided with per se known control devices adapted to intercept the water fed to the supply unit and to selectively divert it to individual compartments for removing therefrom the detergent or additive contained therein and transferring it to the washing tub.
  • the water is separately supplied to each compartment of the supply unit so as to impinge on the bottom and/or on a part of the interior wall surface of the respective compartment.
  • This system makes use of the dynamic pressure of the water for removing the detergents from the compartments within a sufficiently short time, but is incapable of ensuring a thorough cleaning of the supply unit, so that the individual compartments have to be periodically cleaned.
  • the water is supplied to a distributor disposed above the compartments of the supply unit and provided with a number of separate internal passages communicating with individual compartments through nozzles or the like.
  • the water is thus suppied in the form of a number of jets impinging on substantially the entire interior wall surface of the respective compartments so as to ensure thorough cleaning thereof.
  • the cinetic energy of the water is dispersed over a relatively large area, emptying the various compartments of their contents takes a considerably long time.
  • both of the described systems are only suitable in the case of compartments having a large cross-sectional area and a limited height, and are thus badly suited for employ in laundry washing machines of the top-loading type or of compact construction.
  • the invention makes use of the principle of contemporaneously introducing the water into the supply unit in two directions, so that a first portion of the water impinges on the bottom with considerably dynamic energy so as to promote the discharge of the detergent or additive from the compartment, while another portion of the water sweeps the interior wall surface of the respective compartment so as to ensure its being thoroughly cleaned.
  • the supply unit according to the invention is additionally provided with a conduit for diverting part of the water supplied thereto so as to achieve recirculation thereof under pressure for permitting any detergent accumulated in the discharge portion of the machine to be efficiently recuperated.
  • a laundry washing machine comprising a detergent supply unit provided with respective inlets for the supply thereto of cold and hot water from the water mains and connected to a washing tub the lower portion of which communicates with a discharge unit, said detergent supply unit comprising a container divided into a number of separate compartments adapted to contain detergetns and additives, and a disstributor adapted to be removably mounted on said container and provided with separate internal passages communicating with the various compartments, a control piston being adapted to be actuated by the program unit of the machine for selectively diverting the water to each of said internal passages.
  • a detergent supply unit of the type defined above is characterized in that at least one of said compartments is provided with conduit means adapted to introduce the water also adjacetn the bottom of said compartment, collector means being connected to said discharge unit for causing a part of the supplied water to recirculate therethrough.
  • a laundry washing machine of the top loading type comprises, for the purpose of the present invention, a housing 6 surrounding a washing tub 7 the lower portion of which is connected to a bellows-type conduit 8 leading to a filter unit 9 itself connected to a discharge pump 10 and a discharge conduit 11 leading therefrom.
  • a detergent supply unit 12 mounted in the upper portion of housing 6 is a detergent supply unit 12 provided with a closure lid 13 hingedly mounted on the upper plane of housing 6.
  • Supply unit 12 is connected respectively to a cold water supply mains through a conduit 14 including a solenoid valve 15, to a hot water supply source through a conduit 16 including a solenoid valve 17, and to filter unit 9 through a conduit 18.
  • Supply unit 12 further communicates with a transfer conduit 19 connecting it to washing tub 7.
  • detergent supply unit 12 basically consists of three main components: a container 20, a distributor 21, and a piston 22.
  • Container 20 is integrally foremd of a synthetic resin or the like and comprises compartments 23 and 24 for the detergents for a first and a second washing phase, and compartments 25 and 26 for additives, generally in liquid form.
  • Compartments 25 and 26 each contain a siphon 30 and 31, respectively, for discharging the liquid additives into tub 7.
  • Container 20 is additionally formed with tubular projections 32, 33, and 34 for connection to conduits 16, 18 and 19, respectively (fig. 1).
  • Container 20 has a further opening 35 through which the interior of tubular connector projection 34 communicates with the surrounding environment.
  • Container 20 is finally formed with a lateral guide 36 for slidably receiving piston 22 therein.
  • the latter is provided with a first conduit 37 for diverting the cold water to the compartments of container 20, and a second conduit 38 located adjacent first conduit 37 and serving to divert the hot water in an analogous manner.
  • Piston 22 further comprises a rod 39 having a bifurcate end portion 40 for connection to (not shown) control elements operable to displace piston 22.
  • Distributor 21 is formed with three openings 41, 42 and 43 corresponding respectively to compartments 23, 24 and 25,26 when distributor is mounted on container 20 and releasably secured thereto by means of hook members 44 engaging apertured projections 45.
  • Distributor 21 is further provided with a nozzle 46 connected to conduit 14 for the supply of cold water (fig.1). Nozzle 46 is coaxially aligned with conduit 37 of piston 22 in the operative position thereof.
  • the system of the selective water supply to distributor 21 by means of displaceable piston 22 corresponds to that described in Italian Patent 1,045,343 in the name of the present applicant.
  • conduit 37 there always remains a free space (air break) to be crossed by the jet of the water supply as required by safety regulations.
  • Hot water is supplied to any of compartments 23 to 26 by displacing piston 22 into alignment with the openings of corresponding passages formed in distributor 21 and indicated by phantom lines in fig. 3. Hot water on the other hand can only be supplied to main washing phase detergent compartment 23 after moving piston 22 to a position in which conduit 38 is aligned with tubular connector projection 32.
  • the passages of distributor 21 associated with compartments 25 and 26 open directly into the latter.
  • the passages associated with compartments 23 and 24 feed the water to a collector 47 extending around the upper edge of the corresponding opening 41 and 42, respectively, of distributor 21.
  • Collector 47 associated with compartment 23 is visible in fig. 3.
  • conduit means 27 By means of a partition 50, the interior of conduit means 27 is formed to the shape of a venturi nozzle effective to impart a higher energy to the water jet.
  • Conduit means 27 opens proximate the bottom of the respective compartment 23 or 24 so as to ensure the complete removal therefrom of the detergent, in cooperation with the water jets issuing from nozzles 48 and impinging on the interior wall surface of the respective compartments.
  • Tubular connector projection 33 connected to filter unit 9 vie conduit 18 (fig.1) is located below and in communication with nozzle 46 so as to divert part of the cold water supply for creating a circulation of this water through filter unit 9 and bellows conduit 8 to tub 7.
  • tubular connector projection 33 is formed with a vertical slot 51 and a passage 52 located therebelow, slot 51 and passage 52 communicating with a chamber 53 formed below guide 36 and itself communicating with conduit 34.
  • the dimensions of slot 51 are selected so as to permit the pressure of the water within conduit 18 to be kept between predetermined limits, while passage 52 permits any air bubbles entrained by the water to escape from conduit 18.
  • Chamber 53 in addition serves for collecting any water leakage from the air break between nozzle 46 and piston 22 as well as part of the hot water supply via a passage 66 associated with tubular connector projection 32.
  • compartment 25 similar to compartment 26, is in free communication with tubular connector projection 34 leading towards tub 7 and formed with opening 35 defined by an interior wall 54.
  • Shown in fig. 4 is an arrangement for securing a splash cover 67 on top of the detergent supply unit. This is accomplished by means of resilient clamps 55 engaging seats 56 and 57 formed on splash cover 67 and container 20, respectively. In this manner, the detergent supply unit is readily accessible without requiring the entire splash cover or the top cover of the machine to be dismounted.
  • figs 5 and 6 there is shown a preferred embodiment of means permitting the employ of liquid detergents in the pre-laundering and main laundering compartments without modifying the structural and functional characteristics of the supply unit according to the invention.
  • cup-shaped element 58 to be inserted therein and having an enlarged upper rim 59 adapted to rest on the edge of distributor 21.
  • integralally formed with cup-shaped element 58 is a vertical tube 60, while its bottom is provided with openings for receiving therein respective valve poppets 61 biased towards their closure positions by a spring 62.
  • An inverted cup-shaped element 63 is inserted over vertical tube 60, with its lower edge resting on valve poppets 61.
  • valve poppets 61 may be opened by simply depressing inverted cup-shaped element 63 against the action of spring 62.
  • the detergent and additive supply unit for laundry washing machines is of simple and compact construction and highly efficient in use, ensuring an improved and faster supply of detergents and additives to the tub of the machine as well as the complete discharge thereof from the respective compartments so as to avoid any incrustation and sedimentation forming therein.
  • the described supply unit is highly versatile in use as it may be employed in washing machines of the top-loading as well as of the front-loading type and even permits the employ of liquid detergents by the provision of accessories adapted to be installed in a simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
EP84105256A 1983-05-12 1984-05-09 Distributeur de détergent pour une machine à laver le linge Expired EP0125627B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105256T ATE37207T1 (de) 1983-05-12 1984-05-09 Waschmitteleinspuelvorrichtung fuer eine waschmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT45715/83A IT1174947B (it) 1983-05-12 1983-05-12 Distributore di detersivo per macchina lavabiancheria
IT4571583 1983-05-12

Publications (3)

Publication Number Publication Date
EP0125627A2 true EP0125627A2 (fr) 1984-11-21
EP0125627A3 EP0125627A3 (en) 1985-11-06
EP0125627B1 EP0125627B1 (fr) 1988-09-14

Family

ID=11257589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105256A Expired EP0125627B1 (fr) 1983-05-12 1984-05-09 Distributeur de détergent pour une machine à laver le linge

Country Status (5)

Country Link
EP (1) EP0125627B1 (fr)
AT (1) ATE37207T1 (fr)
DE (1) DE3474046D1 (fr)
ES (1) ES531809A0 (fr)
IT (1) IT1174947B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591245A1 (fr) * 1985-12-06 1987-06-12 Zanussi Elettrodomestici Distributeur de detersifs pour machine lave-linge
FR2632984A1 (fr) * 1988-06-17 1989-12-22 Ciapem Boite a produits pulverulents ou liquides et lave-linge muni d'une telle boite
EP0913513A2 (fr) * 1997-10-31 1999-05-06 T & P - S.p.A. Distributeur de produits de lavage pour machine à laver avec antiretour intégré
EP0927785A1 (fr) * 1997-12-30 1999-07-07 T & P - S.p.A. Dispositif pour l'alimentation sélective d'agents de nettoyage dans la cuve d'une machine à laver à chargement par le haut
EP1849907A1 (fr) * 2006-04-28 2007-10-31 Electrolux Home Products Corporation N.V. Distributeur de détergent demontable pour une machine à laver à chargement par le dessus
WO2015080491A2 (fr) * 2013-11-28 2015-06-04 Lg Electronics Inc. Machine à laver
EP2889418A1 (fr) * 2013-12-24 2015-07-01 Electrolux Appliances Aktiebolag Machine à laver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8875548B2 (en) 2010-09-24 2014-11-04 Whirlpool Corporation Laundry treating appliance with cleaning system for residual treating chemistry

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT285501B (de) * 1965-09-16 1970-10-27 Hoover Ltd Waschmittelausgabeeinrichtung
DE1955256A1 (de) * 1969-05-17 1970-12-17 Zanussi A Spa Industrie Wasch- und Zusatzmitteleinspuelvorrichtung fuer Waschmaschinen
DE2253094A1 (de) * 1972-10-26 1974-05-09 Bosch Siemens Hausgeraete Wasch- oder geschirrspuelmaschine mit einer einspuelvorrichtung
DE2409450A1 (de) * 1973-03-30 1974-10-10 Zanussi A Spa Industrie Waschmittel-vorwaehlspender fuer laugenbehaelter in waschmaschinen
DE2555772A1 (de) * 1975-12-11 1977-06-23 Bauknecht Gmbh G Einspuelvorrichtung fuer waschmaschinen
DE2920000A1 (de) * 1978-05-30 1979-12-13 Domar Sa Reinigungsmittelfoerderer in dem waschen von kleidungsstuecken dienenden waschmaschinen
GB2043705A (en) * 1979-01-18 1980-10-08 Zanussi A Spa Industrie Improvements in detergent distributors for clothes washing machines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT285501B (de) * 1965-09-16 1970-10-27 Hoover Ltd Waschmittelausgabeeinrichtung
DE1955256A1 (de) * 1969-05-17 1970-12-17 Zanussi A Spa Industrie Wasch- und Zusatzmitteleinspuelvorrichtung fuer Waschmaschinen
DE2253094A1 (de) * 1972-10-26 1974-05-09 Bosch Siemens Hausgeraete Wasch- oder geschirrspuelmaschine mit einer einspuelvorrichtung
DE2409450A1 (de) * 1973-03-30 1974-10-10 Zanussi A Spa Industrie Waschmittel-vorwaehlspender fuer laugenbehaelter in waschmaschinen
DE2555772A1 (de) * 1975-12-11 1977-06-23 Bauknecht Gmbh G Einspuelvorrichtung fuer waschmaschinen
DE2920000A1 (de) * 1978-05-30 1979-12-13 Domar Sa Reinigungsmittelfoerderer in dem waschen von kleidungsstuecken dienenden waschmaschinen
GB2043705A (en) * 1979-01-18 1980-10-08 Zanussi A Spa Industrie Improvements in detergent distributors for clothes washing machines

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591245A1 (fr) * 1985-12-06 1987-06-12 Zanussi Elettrodomestici Distributeur de detersifs pour machine lave-linge
FR2632984A1 (fr) * 1988-06-17 1989-12-22 Ciapem Boite a produits pulverulents ou liquides et lave-linge muni d'une telle boite
EP0913513A2 (fr) * 1997-10-31 1999-05-06 T & P - S.p.A. Distributeur de produits de lavage pour machine à laver avec antiretour intégré
EP0913513A3 (fr) * 1997-10-31 1999-06-16 T & P - S.p.A. Distributeur de produits de lavage pour machine à laver avec antiretour intégré
EP0927785A1 (fr) * 1997-12-30 1999-07-07 T & P - S.p.A. Dispositif pour l'alimentation sélective d'agents de nettoyage dans la cuve d'une machine à laver à chargement par le haut
EP1849907A1 (fr) * 2006-04-28 2007-10-31 Electrolux Home Products Corporation N.V. Distributeur de détergent demontable pour une machine à laver à chargement par le dessus
WO2007124799A1 (fr) * 2006-04-28 2007-11-08 Electrolux Home Products Corporation N.V. Distributeur de détergent démontable pour machines à laver à chargement par le haut
US9783923B1 (en) 2013-11-28 2017-10-10 Lg Electronics Inc. Detergent dispenser for washing machine
WO2015080491A3 (fr) * 2013-11-28 2015-08-13 Lg Electronics Inc. Machine à laver
RU2632026C1 (ru) * 2013-11-28 2017-10-02 ЭлДжи ЭЛЕКТРОНИКС ИНК. Стиральная машина
WO2015080491A2 (fr) * 2013-11-28 2015-06-04 Lg Electronics Inc. Machine à laver
US9809921B2 (en) 2013-11-28 2017-11-07 Lg Electronics Inc. Detergent dispenser for washing machine
US9816219B2 (en) 2013-11-28 2017-11-14 Lg Electronics Inc. Detergent dispenser for a washing machine
US9816218B2 (en) 2013-11-28 2017-11-14 Lg Electronics Inc. Detergent dispenser for a washing machine
US9834880B2 (en) 2013-11-28 2017-12-05 Lg Electronics Inc. Detergent dispenser for a washing machine
EP2889418A1 (fr) * 2013-12-24 2015-07-01 Electrolux Appliances Aktiebolag Machine à laver
WO2015096985A1 (fr) * 2013-12-24 2015-07-02 Electrolux Appliances Aktiebolag Machine à laver

Also Published As

Publication number Publication date
ATE37207T1 (de) 1988-09-15
EP0125627A3 (en) 1985-11-06
IT8345715A0 (it) 1983-05-12
DE3474046D1 (en) 1988-10-20
ES8503753A1 (es) 1985-03-01
EP0125627B1 (fr) 1988-09-14
IT1174947B (it) 1987-07-01
IT8345715A1 (it) 1984-11-12
ES531809A0 (es) 1985-03-01

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