EP0125627B1 - Waschmitteleinspülvorrichtung für eine Waschmaschine - Google Patents
Waschmitteleinspülvorrichtung für eine Waschmaschine Download PDFInfo
- Publication number
- EP0125627B1 EP0125627B1 EP84105256A EP84105256A EP0125627B1 EP 0125627 B1 EP0125627 B1 EP 0125627B1 EP 84105256 A EP84105256 A EP 84105256A EP 84105256 A EP84105256 A EP 84105256A EP 0125627 B1 EP0125627 B1 EP 0125627B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- supply unit
- compartments
- container
- water
- detergent
- 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
Links
- 239000003599 detergent Substances 0.000 title claims abstract description 44
- 238000010412 laundry washing Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000654 additive Substances 0.000 claims abstract description 11
- 238000005406 washing Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 230000000717 retained effect Effects 0.000 claims 1
- 238000004900 laundering Methods 0.000 abstract description 5
- 230000000996 additive effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
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 a machine, according to the preamble of claim 1.
- a supply unit of this kind is disclosed in DE-A-1 955 256.
- 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 supplied 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 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 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 formed 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 bifurcated end portion 40 for connection to (not shown) control elements operable to displace piston 22.
- Distributor 21 is formed with three charging 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 conduits 37 of piston 22 in the operative position thereof.
- 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 via 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. In this manner, any detergent deposited in filter unit 9 and/or bellows conduit 8 is effectively recuperated so as not to be discharged without having been utilized.
- tubular connector projection 33 is formed with a vertial 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.
- a 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.
- the described arrangement forms a siphon for the transfer of liquid detergents to the washing tub as water is supplied to cup-shaped element 58 via passage 47 of distributor 21 and a further passage 64 formed opposite an opening 65 in the wall of cup-shaped element 58.
- 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)
- Detergent Compositions (AREA)
- Cleaning By Liquid Or Steam (AREA)
Claims (10)
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 EP0125627A2 (de) | 1984-11-21 |
EP0125627A3 EP0125627A3 (en) | 1985-11-06 |
EP0125627B1 true EP0125627B1 (de) | 1988-09-14 |
Family
ID=11257589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84105256A Expired EP0125627B1 (de) | 1983-05-12 | 1984-05-09 | Waschmitteleinspülvorrichtung für eine Waschmaschine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0125627B1 (de) |
AT (1) | ATE37207T1 (de) |
DE (1) | DE3474046D1 (de) |
ES (1) | ES8503753A1 (de) |
IT (1) | IT1174947B (de) |
Cited By (1)
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 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1187304B (it) * | 1985-12-06 | 1987-12-23 | Zanussi Elettrodomestici | Distributore di detersivo per macchine lavabiancheria |
FR2632984B1 (fr) * | 1988-06-17 | 1991-05-17 | Ciapem | Boite a produits pulverulents ou liquides et lave-linge muni d'une telle boite |
IT1295908B1 (it) * | 1997-10-31 | 1999-05-28 | T & P Spa | Dispositivo per l'alloggiamento di agenti di lavaggio in una macchina lavatrice con salto in aria incorporato |
IT1297037B1 (it) * | 1997-12-30 | 1999-08-03 | T & P Spa | Un complesso per la fornitura selettiva di agenti di lavaggio ad una vasca di lavoro di una macchina lavatrice a carica dall'alto |
EP1849907B1 (de) * | 2006-04-28 | 2008-07-09 | Electrolux Home Products Corporation N.V. | Demontierbare Waschmitteleinspüleinrichtung für eine von oben beschickbare Waschmaschine |
AU2014354442B2 (en) | 2013-11-28 | 2017-06-15 | Lg Electronics Inc. | Washing machine |
EP2889418B1 (de) * | 2013-12-24 | 2016-09-21 | Electrolux Appliances Aktiebolag | Waschmaschine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1130201A (en) * | 1965-09-16 | 1968-10-09 | Hoover Ltd | Improvements relating to detergent dispensers for washing machines |
AT291900B (de) * | 1969-05-17 | 1971-08-10 | Zanussi A Spa Industrie | Wasch- und Zusatzmittel-Einspülvorrichtung für Waschmaschinen |
DE2253094A1 (de) * | 1972-10-26 | 1974-05-09 | Bosch Siemens Hausgeraete | Wasch- oder geschirrspuelmaschine mit einer einspuelvorrichtung |
IT1045343B (it) * | 1973-03-30 | 1980-05-10 | Zanussi A Spa Industrie | Dispositivo di immissione selettiva di sostanze nelle vsche delle macchine lavatrici |
DE2555772C3 (de) * | 1975-12-11 | 1981-01-29 | G. Bauknecht Gmbh, 7000 Stuttgart | Einspülvorrichtung für Waschmaschinen |
DE2920000C2 (de) * | 1978-05-30 | 1986-05-15 | Domar, S.A., Martorellas Del Valles, Barcelona | Vorrichtung zum Abgeben von Reinigungsmitteln in das Waschwasser von Waschmaschinen |
IT7934005V0 (it) * | 1979-01-18 | 1979-01-18 | Zanussi A Spa Industrie | Perfezionamenti nei distributori di detrsivo per macchine lavabiancheria. |
-
1983
- 1983-05-12 IT IT45715/83A patent/IT1174947B/it active
-
1984
- 1984-04-18 ES ES531809A patent/ES8503753A1/es not_active Expired
- 1984-05-09 EP EP84105256A patent/EP0125627B1/de not_active Expired
- 1984-05-09 DE DE8484105256T patent/DE3474046D1/de not_active Expired
- 1984-05-09 AT AT84105256T patent/ATE37207T1/de not_active IP Right Cessation
Cited By (1)
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 |
Also Published As
Publication number | Publication date |
---|---|
EP0125627A3 (en) | 1985-11-06 |
IT8345715A0 (it) | 1983-05-12 |
ATE37207T1 (de) | 1988-09-15 |
DE3474046D1 (en) | 1988-10-20 |
ES531809A0 (es) | 1985-03-01 |
EP0125627A2 (de) | 1984-11-21 |
IT1174947B (it) | 1987-07-01 |
ES8503753A1 (es) | 1985-03-01 |
IT8345715A1 (it) | 1984-11-12 |
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