EP3473764A1 - Waschmaschinenwaschmittelspender - Google Patents

Waschmaschinenwaschmittelspender Download PDF

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Publication number
EP3473764A1
EP3473764A1 EP17197074.2A EP17197074A EP3473764A1 EP 3473764 A1 EP3473764 A1 EP 3473764A1 EP 17197074 A EP17197074 A EP 17197074A EP 3473764 A1 EP3473764 A1 EP 3473764A1
Authority
EP
European Patent Office
Prior art keywords
container
washing machine
drawer
pivot axis
tilted
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
EP17197074.2A
Other languages
English (en)
French (fr)
Other versions
EP3473764B1 (de
Inventor
Magnus SALOMONSSON
Johannes LINDGREN
Jovic NEBOSJA
Mattias Nilsson
Gunnar Müller
John Johansson
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 Professional AB
Original Assignee
Electrolux Laundry Systems Sweden AB
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 Laundry Systems Sweden AB filed Critical Electrolux Laundry Systems Sweden AB
Priority to EP17197074.2A priority Critical patent/EP3473764B1/de
Publication of EP3473764A1 publication Critical patent/EP3473764A1/de
Application granted granted Critical
Publication of EP3473764B1 publication Critical patent/EP3473764B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the present invention relates to a washing machine, especially a washing machine detergent dispenser.
  • washing additives such as detergents, bleaching agents, fabric softeners, and the like
  • these additives can be a particulate product, such as a powder, an agglomerate, a granulate, a liquid or a gel.
  • dispensers for dispensing wash additives to the washing machine at predetermined times during the washing process, which generally includes a fill cycle, a wash cycle, a rinse cycle, and a centrifugation cycle.
  • the dispensing device for particulate detergent products comprises a box shaped recess and a drawer which is slidably mounted in said recess.
  • the drawer may be provided with a plurality of separate compartments containing detergent products.
  • the detergent product is held in place until flushed by an incoming water flow into the washing drum, the compartments being provided with a falling slope towards the washing drum.
  • the compartments are designed so the liquid or gel is kept in place by the walls of the compartments and is added to the washing drum by a flush of water filling up the compartments so that it overflows and drains into the washing drum.
  • a detergent dispenser consists of a cup for receiving and dispensing the detergent product, a tray pivotally supporting the cup for movement between an upright orientation for retaining the detergent in the cup and a dumping orientation in which the detergent in the cup is distributed into the washing drum.
  • An actuation system comprising a solenoid, operated by the inlet water flow is provided for rotation of the cup.
  • a washing machine comprising a detergent dispenser, wherein the detergent dispenser comprises a drawer housed in a wall of the washing machine, and at least one container adapted to be loaded with a detergent product.
  • the at least one container is pivotable about a pivot axis relative to the drawer, such that the container is stable in a first and in a second position.
  • the first position may be an upright position, in which the container is upright to be loaded with the detergent product
  • the second position may be a tilted position, in which the container is tilted for discharging of the detergent product into a washing compartment of the washing machine.
  • the same type of detergent dispenser can be used for detergent products in different shapes, such as liquids, tablets, powder etc. and a siphon used in detergent dispensers for liquid detergents in prior art becomes redundant.
  • a smaller quantity of detergent products can be loaded into the detergent dispenser, as the detergent product becomes very effectively discharged into the washing compartment of the washing machine.
  • This solution also makes it possible to flush the container with water when the container has been tilted and thereby more or less eliminating any film of residues on the container walls that otherwise would be needed to be cleaned manually.
  • the drawer may also contain several containers of different volume sizes depending of the detergent product that is loaded in the container.
  • a modular system with containers of different volume sizes can be built, that depends on the size of the washing machine.
  • the container may have an asymmetric shape with respect to the pivot axis, such that, when filled with water of a first level, a common center of mass is shifted from one side of the pivot axis to the other, whereby the container is tilted from the upright to the tilted position by being filled with water.
  • the container may have such a shape that the container has differently angled side walls on either side of the pivot axis, in such way that one side wall is more vertical relative to the pivot axis and the other side wall is more inclined away from the pivot axis.
  • the common center of mass may be configured to remain on the other side of the pivot point when the container has been tilted and emptied.
  • the container may further comprise a counterweight, which keeps the container in an upright position until the container has been filled with water to a certain level and keeps the container in the tilted positon after being emptied.
  • a counterweight which keeps the container in an upright position until the container has been filled with water to a certain level and keeps the container in the tilted positon after being emptied.
  • the counterweight may be attached to or integral with a side wall of the container which is relatively vertical as compared to the opposing side wall on the opposite side of the pivot axis.
  • the vertical side wall of the container may comprise a compartment for the counterweight. Hereby it is possible to easily replace or change the counterweight.
  • the inclined side wall of the container may comprise a lip curving away from the interior of the container. This forms a jug-shaped container that further facilitates the tilting of the container and acts as a guide for a mixture of water and detergent product into the washing compartment of the washing machine when the container is being tilted.
  • the washing machine may further comprise a frame with an attached casing disposed in a front wall of the washing machine, wherein the drawer is movable in a displacement direction between a retracted position, in which the drawer is inserted in the casing, and an extracted position, in which the drawer partially extends from the casing to expose the container, wherein the drawer further comprises a hinge mechanism to provide a tipping of the drawer downwards when the drawer is in the extracted position.
  • the tilting may also move the centre of mass of a tilted container to the other side of the pivot, such that the container returns to the upright position if tilted.
  • the opening angle of the drawer when tipped downwards may be adjustable to control the maximal quantity of detergent product that is loaded into the container.
  • Water may be added to the container by a nozzle, wherein the nozzle is protruding into the container. Hereby splashing of water into the drawer is prevented.
  • water from the nozzle rinses the inner side of the container when the container is in the tilted position.
  • this detergent dispenser is cheap to manufacture, have a great reliability due to simple components, have a positive impact on the environment, thanks to allowing use of less detergent products, and allows a good ergonomic working position for the user.
  • Fig. 1 illustrates schematically a frontloaded washing machine 1 comprising a parallelepiped-shaped casing 3, a cylindrical washing compartment 5, arranged inside the casing 3 and an electrically-powered motor (not shown), which is adapted to drive a drum in the washing compartment 5.
  • a door 9 is attached to a front wall 7 of the casing 3 for watertight sealing of the washing compartment 5.
  • a detergent dispenser 11 located, which is adapted for feeding a given quantity of detergent products into the washing compartment 5.
  • the washing machine 1 further comprises an appliance control panel 13 located on the front wall 7 of the casing 3, which allows the user to manually select a desired washing cycle among several available washing cycles.
  • a freshwater supply circuit (not shown) is connected to the water main for providing a flow of fresh water from the water main to the detergent dispenser 11 and/or to the washing compartment 5 according to the washing cycle selected by the user.
  • the detergent dispenser 11 comprises a drawer 15, located inside the front wall 7 of the washing machine 1, typically above the washing compartment 5 and beside the appliance control panel 13.
  • An outer handle 17, may be flush with the front wall 7 when the drawer 15 is closed.
  • Two horizontal side walls 19 can be attached to the handle 17.
  • Partitions 21 (cf. figs 2b-2c ) may be disposed inside the drawer 15, to which partitions at least one container 23 can be attached. In the illustrated case four containers 23 are used, having different sizes and intended uses.
  • the containers 23 may be adapted to be loaded with detergent products, such as detergents, bleaching agents, fabric softeners and like in the form of a powder, a liquid, or a tablet etc.
  • the partitions 21 can be provided with vertical slots 25 (cf. fig 2c ), to which pivot pins 27 of the containers 23 may be attached and pivotally suspended (cf. fig 2b ) by means of a snap fit.
  • the detergent dispenser 11 contains four containers 23 in three different volume sizes, but other variations are possible.
  • the container 23 may be shaped like a cup.
  • the container 23 can be made of a plastic material, such as polypropylene, by injection moulding.
  • Polypropylene T20 is one example of a suitably used material.
  • a pin 27 may be formed in each side of the container 23.
  • Each vertical slot 25 in the partitions 21 can be provided with a recess 29, which acts as a snap lock preventing the pin 27 from moving once attached to the slot 25 (cf. fig 2c ).
  • the container 23 becomes pivotable about a pivot axis 31 relative to the drawer 15, such that the container 23 is stabile in first and a second position.
  • the pivot axis 31 is low enough in relation to the volume of the container 23, so that the container can tilt forwards or backwards and remain in either position. In the upright position the container may rest against the front wall of the drawer 15 and in the tilted position against the floor thereof.
  • the first position may be an upright position (A), as seen in Fig. 4a , in which the container 23 may be filled with a detergent product 57.
  • the second stabile position may be a tilted position (B), as seen in Fig. 4e , for discharging of the detergent product mixed with water in the container 23 into the washing compartment 5 of the washing machine 1.
  • the container 23 may have an asymmetrical shape in form of different angled walls 33, 35 on either side of the pivot axis 31 as shown in the cross-section in fig 3b .
  • a front wall 33, facing the front of the compartment may be more vertical relative to the pivot axis 31 or lean towards the pivot axis and the rear wall 35, facing the interior of the machine 1, may be inclined away from the pivot axis 31 when rising from the container 23 bottom.
  • the rear wall 35 can have a lip 37 curving away from the interior of the container 23, which creates a jug-like configuration of the container 23. Both the asymmetrical shape and the jug-like configuration of the container 23 facilitates tilting of the container 23 from the upright position (A) to the tilted position (B).
  • the container 23 can have an opening 39, directed upwards when the container is in the upright position (A).
  • the opening 39 can be provided with a circumferential flange 41, preventing detergent products from falling between the containers 23 and possibly clogging the pins 27 preventing pivoting with respect to the slots 25.
  • a crescent formed lip 43 may be arranged above the pins 27 for further prevention of the pins 27 being clogged by detergent products.
  • the container 23 may also comprise a counterweight 45, which can be attached to or integral with the front wall 33 of the container 23.
  • the counterweight 45 may be made of stainless steel or some other high-density material compared to the plastic used and may have the shape of a rectangle, although other shapes are possible.
  • the counterweight 45 can be glued to the container 23 or as illustrated inserted into a compartment created by a pocket 61 arranged at the more vertical front sidewall 33 of the container 23.
  • the counterweight 45 could also be provided as a thicker portion of the vertical side wall 33 in the container 23.
  • the detergent dispenser 11 may further comprise a frame 47 and a casing 49 attached to the frame 47.
  • These parts 47, 49 can be made of a plastic material, such as polypropylene by injection molding.
  • the drawer 15 can be movable inside the casing 49 in a substantially horizontally-orientated displacement direction d (cf. fig 5a ).
  • the drawer 15 may be movable between an inserted position ( Fig. 5a ), in which the drawer 15 is inserted into the casing 49 and an extracted position ( Fig. 5b ), in which the drawer 15 partly extends out of the casing 49 to expose the containers 23 attached therein.
  • the horizontal side walls 19 of the drawer 15 are moved in vertical pockets 51 created between the frame 47 and the casing 49 to obtain the retracted and extracted position of the drawer 15.
  • each horizontal side wall 19, opposite to the handle 17, can be provide with a hinge mechanism.
  • the hinge device may comprise knobs 63 attached on the inner end of each horizontal side wall 19.
  • the knobs 63 is run in grooves 65 on a horizontal side wall 67 of the frame 47 while the horizontal side walls 19 of the drawer 15 are moved in the vertical pockets 51 created between the frame 47 and the casing 49.
  • This hinge mechanism provides a tipping of the drawer 15 downwards, towards the front wall 9 of the washing machine 1, when the drawer 15 is in the extracted position. Thanks to the hinge-mechanism, the drawer 15 can in a smooth, motion expand towards the user and then slightly tip forward and expose the containers 23 in an ergonomic working height, especially at big industrial washing machines.
  • the container 23 can be filled with the detergent product.
  • the opening angle of the tipped drawer 15 can be adjustable and controls the quantity of detergent product that can be filled into the container 23.
  • the tipping is also one way of making a container return from a tilted position to an upright position, although other ways of achieving this motion of course are possible.
  • a washing program is selected from the appliance control panel 13 and the washing cycles according to the selected washing program starts. At some point, a flow of fresh water is added to the detergent dispenser 11 and/or the washing compartment 5 according to the selected washing cycles. A flow of fresh water is supplied from a fresh water supply circuit (not shown), connected to the water main. Water is added into the container 23 by a nozzle 55 located in the casing 49 (cf. fig 3b ). The nozzle 55 may be controlled by a separate valve (not shown), connected to the fresh water supply circuit, according to the selected washing cycles.
  • the container 23 When the container 23 has been filled with the detergent product 57, the container may be in an upright position (A) as illustrated in fig 4a . A common center of mass 59 is then at the bottom of the container 23, at the side of the pivot axis 31 closest to the front surface of the machine1, as seen in Fig. 4a . In this position A, the container 23 can be in a first stable position, e.g. resting against the inner front wall of the drawer.
  • the common center of mass 59 will move from the bottom of the container 23 towards the pivot axis 31, as seen is Fig. 4b and 4c .
  • the container 23 is still stable in the upright position (A) due to the counterweight 45.
  • the nozzle 55 may protrude into the container 23, as seen in Fig. 3b , when the container is in the upright position A, so most water ends up in the container 23 and is prevented from splashing into the rest of the detergent dispenser 11.
  • the container 23 When the container 23 has been filled with water to a threshold level, the common center of mass 59 has moved above and past the pivot axis 31, as seen in fig 4d , the container 23 is not stable anymore and will tilt backwards towards the drum.
  • the asymmetrical shape of the container 23 facilitates the tilting, e.g. the rear wall 35 allows water to be contained on the rear side of the pivot axis which moves the common center of mass 59 to the right in the drawing.
  • the container 23 When tilted, the container 23 remains in a tilted position (B), as seen in Fig. 4e , where water and detergent is discharged into the washing compartment 5 guided by the lip 37 of the rear wall 35 of the container 23.
  • the container 23 remains stable in this position, for instance resting against the floor of the drawer, even when the container 23 is empty the counterweight 45 now contributing to retain the common center of mass 59 on the rear side of the pivot axis 31, as seen in fig. 4f .
  • the counterweight 45 By the counterweight 45 retaining the container 23 in the tilted position (B), most of the detergent product will be discharged into the washing compartment 23 and does not to any greater extent form a film of residues on the interior of the container 23 that needs to be manually cleaned.
  • the position of the nozzle 55 relative the container 23 is changed when the container 23 is tilted, as seen in Fig. 6b, wherein the water flow from the nozzle 55 may follow the interior walls of the container 23 and thereby rinse the container 23 from detergent product.
  • the shape and the tilting of the container 23, allows the same type of detergent dispenser to be used independently of the type of detergent product.
  • the container 23 may be retained in the tilted position B until the drawer 15 is moved from the retracted position according to Fig. 5a to the extracted position and tipped downwards towards the front of the washing machine 1 according to Fig. 5c .
  • the tipping motion of the drawer 15 moves the container 23 from the tilted position (B) to the upright position (A).
  • the common center of mass 59 is returned to the other side of the pivot axis 31, as seen in Fig 4a .
  • the drawer 15 could for instance be provided with a bump or like to provide the tipping motion when the drawer 15 is drawn from the inserted position to the extracted position.
  • the drawer 15 can also be provided with a blocking mechanism (not shown), preventing movement of the container 23 from the upright position A to the tilted position B due to other forces than the water weight, as for example due to gravity when the drawer 15 is pushed hard from the extracted position into the retracted position.
  • This blocking mechanism may work as a cradle that releases the container 15 only due to the water pressure created by the nozzle 55.
  • this detergent dispenser has only been shown on a front- loaded washing machine but it will also be possible to use the detergent dispenser on a top-loaded washing machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP17197074.2A 2017-10-18 2017-10-18 Waschmaschinenwaschmittelspender Active EP3473764B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17197074.2A EP3473764B1 (de) 2017-10-18 2017-10-18 Waschmaschinenwaschmittelspender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17197074.2A EP3473764B1 (de) 2017-10-18 2017-10-18 Waschmaschinenwaschmittelspender

Publications (2)

Publication Number Publication Date
EP3473764A1 true EP3473764A1 (de) 2019-04-24
EP3473764B1 EP3473764B1 (de) 2020-08-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113005727A (zh) * 2019-12-19 2021-06-22 海尔智家股份有限公司 洗涤剂投放装置及洗衣设备
EP4166707A1 (de) * 2021-10-18 2023-04-19 BSH Hausgeräte GmbH Wäschepflegegerät mit einem automatischen dosiersystem
WO2023184805A1 (zh) * 2022-03-31 2023-10-05 无锡小天鹅电器有限公司 一种分配盒组件、洗涤剂盒以及衣物处理机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1746540U (de) * 1957-02-11 1957-06-13 Loehe & Dr Ross Ges Mit Beschr Waschautomat mit selbsttaetiger waschmittelzugabe.
DE1268576B (de) * 1964-06-04 1968-05-22 Scharpf Komm Ges Maschinenfabr Waschmitteleinspuelvorrichtung fuer Waschmaschinen
DE3129263A1 (de) * 1981-07-24 1983-02-10 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Waschmaschine mit automatisch gesteuertem wasserzulauf
US5875655A (en) 1996-06-11 1999-03-02 Whirlpool Corporation Additive dispenser for an automatic washer
WO2012025332A2 (en) * 2010-08-26 2012-03-01 Unilever Plc Dispensing device
CN106758012A (zh) * 2016-12-26 2017-05-31 珠海格力电器股份有限公司 一种洗涤剂盒及洗衣机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1746540U (de) * 1957-02-11 1957-06-13 Loehe & Dr Ross Ges Mit Beschr Waschautomat mit selbsttaetiger waschmittelzugabe.
DE1268576B (de) * 1964-06-04 1968-05-22 Scharpf Komm Ges Maschinenfabr Waschmitteleinspuelvorrichtung fuer Waschmaschinen
DE3129263A1 (de) * 1981-07-24 1983-02-10 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Waschmaschine mit automatisch gesteuertem wasserzulauf
US5875655A (en) 1996-06-11 1999-03-02 Whirlpool Corporation Additive dispenser for an automatic washer
WO2012025332A2 (en) * 2010-08-26 2012-03-01 Unilever Plc Dispensing device
CN106758012A (zh) * 2016-12-26 2017-05-31 珠海格力电器股份有限公司 一种洗涤剂盒及洗衣机

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113005727A (zh) * 2019-12-19 2021-06-22 海尔智家股份有限公司 洗涤剂投放装置及洗衣设备
CN113005727B (zh) * 2019-12-19 2024-05-31 青岛海尔洗衣机有限公司 洗涤剂投放装置及洗衣设备
EP4166707A1 (de) * 2021-10-18 2023-04-19 BSH Hausgeräte GmbH Wäschepflegegerät mit einem automatischen dosiersystem
WO2023184805A1 (zh) * 2022-03-31 2023-10-05 无锡小天鹅电器有限公司 一种分配盒组件、洗涤剂盒以及衣物处理机

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