EP0913513A2 - Waschmittelspender für Waschmaschine mit integriertem Rückflussverhinderer - Google Patents

Waschmittelspender für Waschmaschine mit integriertem Rückflussverhinderer Download PDF

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Publication number
EP0913513A2
EP0913513A2 EP98119776A EP98119776A EP0913513A2 EP 0913513 A2 EP0913513 A2 EP 0913513A2 EP 98119776 A EP98119776 A EP 98119776A EP 98119776 A EP98119776 A EP 98119776A EP 0913513 A2 EP0913513 A2 EP 0913513A2
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EP
European Patent Office
Prior art keywords
washing
water
air break
valve means
conduit
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
EP98119776A
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English (en)
French (fr)
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EP0913513B1 (de
EP0913513A3 (de
Inventor
Mario Moscatelli
Carlo Carli
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T&P SpA
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T&P SpA
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Family has litigation
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Application filed by T&P SpA filed Critical T&P SpA
Publication of EP0913513A2 publication Critical patent/EP0913513A2/de
Publication of EP0913513A3 publication Critical patent/EP0913513A3/de
Application granted granted Critical
Publication of EP0913513B1 publication Critical patent/EP0913513B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D06F39/028—Arrangements for selectively supplying water to detergent compartments

Definitions

  • the present invention relates to a device for housing detergent agents and/or other agents which can be used in washing articles, more particularly articles of laundry, to be fed selectively into the washing tub of a washing machine.
  • This kind of device for housing detergents usually known as “drawers” in the field, generally comprises a body of the device which defines one or more compartments for containing a respective washing agent, and corresponding perforated conduits, which are provided above said compartments for conveying and allowing to fall therein corresponding flows of water in order to allow removal from each compartment of the washing agent housed therein to feed it towards the washing tub.
  • the transfer, by the aforementioned drawer, of the flows of water filled with detergent substances and the like to the washing tub of the washing machine is performed via a union formed in the back of the body of the drawer, where all the flows of water entering said drawer are conveyed by falling.
  • washing machines of the known type and more particularly in washing machines of the "washer-dryer” type that is to say of the type wherein drying of the garments is performed directly in the washing tub at the end of this washing operation, it is necessary to add to said washing tub, on the occasion of said drying, a limited flow of water intended to be dispersed appropriately over the garments in order to encourage their proper drying.
  • this flow of water to be used in drying is controlled by means of an appropriate solenoid valve and is conveyed, passing through an air break, to a sprayer part which sprays said water evenly over the laundry in the tub of the machine.
  • the aforementioned air break is none other than a safety device which allows the water supply system to be safeguarded against pollution of drinking water caused by the possible return to the same system of water used in these washing machines, which water, being filled with detergents and other substances removed from the articles being washed, could, due to malfunctioning and excessive pressures created in the washing drum of the machine, be dispersed in the drinking water of the water supply system, soiling it and polluting it.
  • said air break of the conventional type consists of a small plastic block defining a short tubular section with an arched configuration placed on a vertical plane and having on the lower side an opening for the falling into the tub of the possible return flow towards the water supply system.
  • Said air break device in the water conduit intended for wetting during the phase of drying is made in the form of a single part, separated from said drawer for housing the detergents, which is attached to said drawer by means of an axially perforated pin which is inserted in a corresponding hole in a wall of the same drawer.
  • Said pin for attachment of the air break in addition to providing the support for the same air break, allows passage of the water, in output from the lower opening of the air break, towards the back of the drawer for consequent discharge in the tub via the aforementioned union already used by the flows for removing the detergents.
  • An air break device made in this way is formed from two shaped parts in a plastic material, produced by moulding, which are welded to match each other, forming said conduit defining said air break.
  • the hole in said drawer suitable for receiving said pin for connection of the air break, is provided at the time of moulding of the body of the drawer in the rear vertical wall of the same, use is required, for the production of a body of the drawer made in this way, of a mould which, in addition to the normal components of shaping which extend in a substantially parallel direction to the walls to be made of said body of the drawer, has an appropriate segment which is mobile, perpendicularly to said rear wall of the drawer, which allows the aforementioned hole for attachment of the air break device to be made.
  • the present invention as disclosed in claim 1 attached hereto, is aimed at overcoming at least some of the aforementioned disadvantages and problems present in the prior art.
  • the forming of the air break built directly into the drawer of the washing agents also avoids the need for forming a special weld between the two moulded parts defining the air break, the latter being in fact incorporated in welds which would have to be made in any case for forming said body of the drawer.
  • FIG. 1 shows a washing machine 10 for domestic use of a wholly common type. It comprises a front opening 11 fitted with a closure door 12 for loading laundry inside the laundry container drum or washing tub of the machine, and a device or drawer 13 for the selective sending of detergent agents and/or other agents which can be used in washing laundry articles to the washing tub of the machine.
  • the washing machine also comprises a timer 14 for setting a programmed washing cycle, a knob 15 for controlling the washing temperature and any other control push-buttons 16.
  • suitable valve means (not shown in Figure 1) send selectively, under the control of the timer 14, a respective flow of water to each of the compartments of the detergent container drawer to remove detergents or additives contained in these compartments and transport them into contact with the laundry in the washing tub.
  • the device for housing the washing agents or drawer comprises a body of the device, denoted overall by reference numeral 20, which is composed of a fixed part 22, to be connected rigidly to the frame of the washing machine, and a mobile part 24 which can be extracted outside of the washing machine as shown in Figure 1, for the deposit of various washing agents, such as detergents, bleach and fabric conditioner, in respective housing means in the form of compartments or basins or the like.
  • various washing agents such as detergents, bleach and fabric conditioner
  • the drawer shown here comprises two end compartments 26 and 28 respectively for housing the quantity of prewash and washing detergent and the compartments 30 and 32 for housing the quantity of bleach and fabric conditioner respectively.
  • the fixed part 22 of the body of the drawer comprises a lower part 31 in the form of a substantially prismatic container housing the mobile washing agent container part, which is open on one side for inserting and extracting said mobile part 24.
  • Said lower part of said fixed part 22 defines therefore an internal chamber 38 for holding the flows of water passing into said device for housing the washing agents, which discharges them directly into the washing tub of the washing machine via the lower union 40.
  • valve device 42 is also directly attached, suitable for sending, in a selective manner under the control of the timer and washing programme of the machine, a predefined flow of water to each of the compartments of the drawer for removing and transporting to the washing tub the detergent or other washing agent contained therein.
  • the valve device adopted here comprises, in addition to a manifold conduit or element 44 at one of whose ends a pipe or conduit 206 is attached by threaded coupling 46 for feeding water of the water supply system, a first, a second and a third valve respectively 48, 50 and 52, whereof the Figure clearly illustrates the lower part wherein the electrical winding is housed for actuating the respective gate valve.
  • the valve element 52 of the valve means therefore comprises, in a known manner, a membrane gate valve 54 shown in a backward position in Figure 2, which can be actuated to close the aperture 56 of passage of the flow, to allow the passage of water from the manifold 44 towards a corresponding compartment of the device for housing the washing agents, as shown by the arrows F in Figure 2.
  • the gate valve 52 has a circular central hole formed at the upper end 60 with axial passages 62 of a magnetic rod 58 driven to move by said electrical actuation winding 63, and is also attached externally to the internal surface of the chamber of the valve element.
  • the external containing framework 202 of the machine has at the rear an access 204 for allowing a connection of the conduit or pipe 206, for feeding external mains water into the machine, to said valve means of the assembly.
  • the device for housing the detergents has a portion with a substantially flattened configuration 100 suitable for supporting said valve means 42 which feed the flows of water to said device for housing the washing agents.
  • Said portion 100 is made in one single part with the body of the device for housing the detergent agents and extends from the rear side which is opposite the one wherefrom the mobile part 24 of the drawer is extracted.
  • Said portion 100 therefore defines means for supporting the valve means which extend from said body of said drawer of the washing agents, which are shaped such as to position the inlet of the flow of water to said valve means at said access 204 for the external conduit of the mains water provided in said external covering framework for allowing easy connection of said external conduit 206 for the external mains water to said inlet of the valve means.
  • conduits 102, 104, 106 and 108 are formed in relief in relation to a support surface 109, whereof the conduits 102, 104, 106 are for conveying the flows of water towards said means for housing the washing agents, that is to say respectively towards the bleach compartment, towards the prewash compartment and towards the washing compartment, while said conduit 108 conveys a flow of water towards an air break device which will be described in greater detail hereinbelow.
  • the support portion 100 has nozzles 110, 112, 114, 116 extending below from the support surface 109, provided to receive by insertion a corresponding emission nozzle of the valve means 42.
  • valve means 42 are also provided for attaching the valve means 42 directly to said support portion 100.
  • Said means for directly attaching the valve means to said support portion 100 comprise holes 118 for inserting appropriate attachment screws, only one of the latter, denoted by reference numeral 119, being shown in Figure 2.
  • Said holes 118 have an axis parallel to the axis of the feed nozzles 114, 112, 116 and connection to the valve means. This enables performing of the connection between valve means and support portion by acting in one single direction of coupling and does not therefore require the operator to move the part in order to connect and attach the valves to the device.
  • Said means of attachment between valve means and support portion also comprise a bracket 120 extending downwards for supporting said valve means and having a shaped end 122 defining a housing suitable for holding a correspondingly shaped part of the valve means.
  • said bracket 120 for supporting said valve means is made in one part with the end portion 123 at the free end of the support portion 100.
  • means are also provided for attaching the washing agent container device to the frame of the washing machine, which are here in the form of holes 124 for the insertion of corresponding attachment screws (not shown) which can be screwed in the same direction of insertion of the screws for attachment of the valve means 42 to the support portion 100.
  • Other means of attachment to the framework comprise holes, only one denoted by 125 being shown in Figure 2, for suitable attachment screws, which are positioned on opposite sides of the lower part 31 of the fixed body of the detergent container device.
  • Said portion 100 for support and conveying extends from the upper edge of the body of the device substantially parallel to the upper portion of covering of the latter.
  • a nozzle 126 is also formed, extending below and intended for attachment of a hose.
  • the conduit having the function of air break sends the flow of wetting water towards the washing tub of the machine through this very nozzle 126. More particularly said feed nozzles 110, 112, 114, 116, formed in the support and conveying portion, are aligned one with the other and the line of alignment of said feed nozzles formed in the support and conveying portion is oriented perpendicularly to the side of the body of the device wherefrom said support and conveying portion extends.
  • said manifold 44 has a longitudinal axis L, which axis is oriented parallel to the longitudinal axis along which the mobile part of the drawer is extracted in order to extend at the access opening 204 provided in the wall 202 of the external framework of the machine opposite the one 202' of extraction of said mobile part of the drawer.
  • the fixed part 22 of the body of the device for housing detergents comprises, in addition to the lower component defining the collection chamber 38, an upper covering component 39 which is attached to the lower part 31 by means of snap hooking tabs 64 on the two sides of the upper component, coupling in an attachment action with corresponding surfaces provided on the lateral edge of the lower component of the body of the device.
  • the upper component 39 of the body of the detergent container device is formed by two parts 20A and 20B, shown in the subsequent Figures 7A, 7B, which match each other and are made integral by welding, generally performed with a hot blade.
  • the rear support portion 100 forms part of this upper portion and is therefore also formed by two parts, 100A and 100B respectively, belonging to the components 20A of Figure 7A and 20B of Figure 7B respectively, which have respective conduit portions 108A and 108B for defining the conduit for conveying the flow towards the air break, and conduit portions 102A, 104A, 106A on the component 7A and 102B, 104B and 106B on the component 7B for defining the conduits for feeding flows of water to the compartments of the washing agents.
  • Said distribution parts comprise, as illustrated in Figure 7A which shows the underlying part of the upper component, a first plurality of holes 66 designed to allow to fall, in a distributed manner, into said compartment for the prewash, a flow of liquid conveyed via a conduit defined by the shaped walls 68A and 68B respectively of Figures 7A and 7B.
  • Said distribution parts also comprise, as shown in Figure 7A, a second plurality of holes 70 designed to allow to fall, in a distributed manner, into said washing compartment, a flow of liquid conveyed via a conduit defined by the walls 72A and 72B of the two parts of Figures 7A and 7B respectively.
  • the aforementioned distribution parts comprise finally, as shown in Figure 7A, a pair of openings 74 designed to allow to fall, in a distributed manner, into said compartment for the fabric conditioner, a flow of liquid conveyed via a conduit defined by the walls 76A and 76B of the two parts of Figures 7A and 7B respectively.
  • the aforementioned air break conduit denoted overall by reference numeral 77, for feeding a flow of liquid for wetting the laundry during drying in said washing tub, in addition to being shaped such as to define a real air break, is provided with an opening for the falling of the water of a possible flow of return towards the mains.
  • said air break conduit 77 is advantageously formed directly in the body of said washing agent container device.
  • an air break shown here allows avoidance of the need to form a separate air break device, with a saving in the costs of production and assembly for attachment of the same to the body of the drawer and for the connection of hoses in rubber for conveying the water and relative clamping clips, as already referred previously.
  • Said conduit 77 defining the air break has an arched shape and is in particular made by means of special walls and respectively on the part 7A and 7B of the upper component of the body of the drawer.
  • the wall 78 A on the part 7A made to match during welding the wall 78B on the part 7B to define the external side 78 of the arched air break conduit and of the wall 80A made to match during welding the wall 80B to define the internal or concave side 80 of the air break conduit.
  • respective cavities 82A, 82B are also formed in a median position in relation to the respective walls and corresponding one to the other during joining of the components 20A and 20B, which are suitable for defining said opening for release of the water from the air break which we will subsequently denote overall by reference numeral 82.
  • the horizontal portions 84A and 84B of the part 7A and of the part 7B also define the back side and covering side of the air break respectively.
  • said conduit defining the air break 77 lies on a horizontal plane, with said opening for the release of water 82 which lies in turn on a vertical plane.
  • the release opening is situated on the internal side which in this case is on a vertical plane
  • the force of gravity no longer pushes the flow of water towards the release opening, but instead towards the back side 84A formed by the part 7A of the air break conduit. Thanks to the present embodiment it is therefore possible to reduce and even eliminate completely the leaks in relation to the air break devices arranged vertically of the art known hitherto.
  • the passage 86 for conveying water in output from said air break extends substantially vertically and is bordered on a front side by a vertical wall 89 and on the opposite side by the internal side of the air break conduit 80 which extends below with an arched portion 88 and ends below with a hole 90 for transfer to the chamber 38 for collecting the flows of water in output from said device and from the latter to the washing tub of the machine.
  • the arrows A indicate the flow of water running normally along the air break conduit; from the figure it can be seen that, in normal conditions, the flow of water A coming from the valve element 52 (not shown in Figure 8) passes between the walls 80 and 78 of the air break and is accelerated at the leakage hole 82, thanks to the narrowing of the passage between said walls, and then flows out of the hole 126' of the lower nozzle 126 to be conveyed, via an appropriate hose (not shown) to be connected to said nozzle 126, towards the sprayer in the tub for wetting the laundry during drying.
  • valve element 52 admits a flow of liquid from the mains towards a short conduit suitable for defining an air break, while the other valve elements 50 and 48 are used, if actuated individually, to send a flow of water towards the compartment containing the quantity of detergent for the prewash and towards the one containing the quantity of detergent for actual washing and, if actuated together, to send the flow of liquid towards the fabric conditioner compartment.
  • valve-detergent drawer assembly valves are not provided for sending water towards the bleach compartment which is therefore intended to be left unused and the relevant conduits blocked. Obviously nothing precludes the fact that this function of the bleach can also be activated, as also the fact that other valve elements can be excluded.
  • the flow of liquid passing through said air break is sent directly into the tub at the end of washing to allow wetting of the laundry during the operation of drying in the washing machine at the end of the washing phase.
  • said air break could also be used for conveying flows of water also intended for other purposes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP98119776A 1997-10-31 1998-10-23 Waschmittelspender für Waschmaschine mit integriertem Rückflussverhinderer Expired - Lifetime EP0913513B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI972455 1997-10-31
IT97MI002455A IT1295908B1 (it) 1997-10-31 1997-10-31 Dispositivo per l'alloggiamento di agenti di lavaggio in una macchina lavatrice con salto in aria incorporato

Publications (3)

Publication Number Publication Date
EP0913513A2 true EP0913513A2 (de) 1999-05-06
EP0913513A3 EP0913513A3 (de) 1999-06-16
EP0913513B1 EP0913513B1 (de) 2003-04-09

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ID=11378142

Family Applications (1)

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EP98119776A Expired - Lifetime EP0913513B1 (de) 1997-10-31 1998-10-23 Waschmittelspender für Waschmaschine mit integriertem Rückflussverhinderer

Country Status (3)

Country Link
EP (1) EP0913513B1 (de)
DE (1) DE69813140T2 (de)
IT (1) IT1295908B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353540A (en) * 1999-07-26 2001-02-28 Aweco Appliance Sys Gmbh & Co Inflow device for water carrying appliances
DE10116832A1 (de) * 2001-04-04 2002-11-21 Bsh Bosch Siemens Hausgeraete Maschine in Form einer Wäsche-Waschmaschine oder Geschirrspülmaschine
DE19959733B4 (de) * 1998-12-11 2005-06-16 T & P S.P.A., Tradate Waschmitteleinbringvorrichtung mit schwimmergeregelter Wasserzufuhr
EP1600546A1 (de) * 2004-05-25 2005-11-30 Electrolux Home Products Corporation N.V. Waschmaschine mit Wasserabgabeeinrichtungen
KR101257311B1 (ko) 2011-04-01 2013-04-23 이코리아산업 주식회사 세탁 장치용 디스펜서 어셈블리의 디스펜서 커버
KR20140027849A (ko) * 2012-08-27 2014-03-07 삼성전자주식회사 세제공급장치를 가지는 세탁기

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1601628A (de) * 1968-02-27 1970-09-07
US3762608A (en) * 1971-10-06 1973-10-02 Fedders Corp Dry detergent dispenser
GB1447466A (en) * 1973-03-30 1976-08-25 Zanussi A Spa Industrie Device for the selective feed of detergents and the like to the tubs of laundry washing machines
EP0125627A2 (de) * 1983-05-12 1984-11-21 INDUSTRIE ZANUSSI S.p.A. Waschmitteleinspülvorrichtung für eine Waschmaschine
EP0688895A1 (de) * 1994-06-20 1995-12-27 TECNOPLASTICA PREALPINA S.p.A. Ventilvorrichtung zur Gezielten zufuhr von Waschmitteln in eine Waschmaschine
EP0725182A1 (de) * 1995-02-03 1996-08-07 Bosch-Siemens HausgerÀ¤te GmbH Wasserzuführungs-Einrichtung für ein wasserführendes Haushaltgerät
EP0758031A1 (de) * 1995-08-07 1997-02-12 Bosch-Siemens HausgerÀ¤te GmbH Waschmittel-Einspüleinrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1601628A (de) * 1968-02-27 1970-09-07
US3762608A (en) * 1971-10-06 1973-10-02 Fedders Corp Dry detergent dispenser
GB1447466A (en) * 1973-03-30 1976-08-25 Zanussi A Spa Industrie Device for the selective feed of detergents and the like to the tubs of laundry washing machines
EP0125627A2 (de) * 1983-05-12 1984-11-21 INDUSTRIE ZANUSSI S.p.A. Waschmitteleinspülvorrichtung für eine Waschmaschine
EP0688895A1 (de) * 1994-06-20 1995-12-27 TECNOPLASTICA PREALPINA S.p.A. Ventilvorrichtung zur Gezielten zufuhr von Waschmitteln in eine Waschmaschine
EP0725182A1 (de) * 1995-02-03 1996-08-07 Bosch-Siemens HausgerÀ¤te GmbH Wasserzuführungs-Einrichtung für ein wasserführendes Haushaltgerät
EP0758031A1 (de) * 1995-08-07 1997-02-12 Bosch-Siemens HausgerÀ¤te GmbH Waschmittel-Einspüleinrichtung

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19959733B4 (de) * 1998-12-11 2005-06-16 T & P S.P.A., Tradate Waschmitteleinbringvorrichtung mit schwimmergeregelter Wasserzufuhr
GB2353540A (en) * 1999-07-26 2001-02-28 Aweco Appliance Sys Gmbh & Co Inflow device for water carrying appliances
GB2353540B (en) * 1999-07-26 2003-01-22 Aweco Appliance Sys Gmbh & Co Inflow device for water carrying appliances
DE10116832A1 (de) * 2001-04-04 2002-11-21 Bsh Bosch Siemens Hausgeraete Maschine in Form einer Wäsche-Waschmaschine oder Geschirrspülmaschine
DE10116832B4 (de) * 2001-04-04 2006-09-21 BSH Bosch und Siemens Hausgeräte GmbH Maschine in Form einer Wäsche-Waschmaschine oder Geschirrspülmaschine
EP1600546A1 (de) * 2004-05-25 2005-11-30 Electrolux Home Products Corporation N.V. Waschmaschine mit Wasserabgabeeinrichtungen
KR101257311B1 (ko) 2011-04-01 2013-04-23 이코리아산업 주식회사 세탁 장치용 디스펜서 어셈블리의 디스펜서 커버
KR20140027849A (ko) * 2012-08-27 2014-03-07 삼성전자주식회사 세제공급장치를 가지는 세탁기
EP2703545A3 (de) * 2012-08-27 2015-10-21 Samsung Electronics Co., Ltd. Waschmaschine mit Reinigungsmittelzuführvorrichtung
US9777424B2 (en) 2012-08-27 2017-10-03 Samsung Electronics Co., Ltd. Washing machine having detergent supply device

Also Published As

Publication number Publication date
DE69813140T2 (de) 2004-03-04
EP0913513B1 (de) 2003-04-09
ITMI972455A1 (it) 1999-05-01
DE69813140D1 (de) 2003-05-15
IT1295908B1 (it) 1999-05-28
EP0913513A3 (de) 1999-06-16

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