EP2678468B1 - Waschmaschine mit selektiv herausnehmbarem filter - Google Patents

Waschmaschine mit selektiv herausnehmbarem filter Download PDF

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Publication number
EP2678468B1
EP2678468B1 EP12711243.1A EP12711243A EP2678468B1 EP 2678468 B1 EP2678468 B1 EP 2678468B1 EP 12711243 A EP12711243 A EP 12711243A EP 2678468 B1 EP2678468 B1 EP 2678468B1
Authority
EP
European Patent Office
Prior art keywords
filter
drawer
washing machine
machine according
lever
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.)
Not-in-force
Application number
EP12711243.1A
Other languages
English (en)
French (fr)
Other versions
EP2678468A1 (de
Inventor
Riccardo Calvi
Sandro Duri
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.)
Whirlpool EMEA SpA
Original Assignee
Indesit Co SpA
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Filing date
Publication date
Application filed by Indesit Co SpA filed Critical Indesit Co SpA
Publication of EP2678468A1 publication Critical patent/EP2678468A1/de
Application granted granted Critical
Publication of EP2678468B1 publication Critical patent/EP2678468B1/de
Not-in-force 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
    • 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 
    • D06F39/10—Filtering arrangements

Definitions

  • the present invention relates to a washing machine, in particular but not limited to a household washing machine, which comprises a drawer for washing agents that can be extracted from the structure of the washing machine and a filter for filtering a wash liquid.
  • washing machine will generally refer, for simplicity, to any machine designed to wash and possibly also to dry laundry or other items, not necessarily intended for domestic use.
  • washing machines typically comprise a filter which is used for filtering the water coming from the tub, so as to eliminate any impurities contained therein, said filter being usually associated with a drain duct or a recirculation duct.
  • filters are typically arranged in positions which are difficult to reach, forcing the user to carry out uncomfortable assembly and disassembly work in order to clean, replace or maintain the filter.
  • the filter is integral with the extractable drawer for loading detergent or washing agents, and is therefore located in the upper part of the machine, in a position easily accessible to a user.
  • the coupling between the filter and the drawer has some drawbacks: in the first place, in fact, the filter is extracted from its operating position every time a load of the detergent is required, and therefore with a certain frequency, even when there is no need for maintainance or replacement.
  • washing agents when loading the washing agents into the drawer the filter remains exposed, with the risk that, if the washing agents are not loaded correctly, the latter may contaminate the filter and impair its operation during the next operating cycles. If one also considers that washing agents are usually liquids or powders, and that they are poured in from a container which is turned upside-down over the drawer, it can be understood that the risk of contaminating the filter is rather high.
  • Patent Application GB2262595A discloses a laundry washing and drying machine comprising a drying air filter with a filter element situated in an opening which also houses the washing agent distributor e.g. in the form of a drawer in the machine's control panel.
  • the front part of the drawer has compartments for the washing agents and the rear part has a filter chamber which holds the filter element in a way that allows it to be detached.
  • the drawer can be equipped with two stops, a first stop holding the drawer in the position for filling with the washing agent and a second stop enabling the filter element to be extracted.
  • the present invention aims at overcoming these and other drawbacks: to this end, the idea underlying the present invention is that of providing a washing machine, such as a laundry washing machine, a washing/drying machine or the like, wherein a wash liquid filter is selectively extractable together with the drawer.
  • a washing machine such as a laundry washing machine, a washing/drying machine or the like
  • the invention teaches to prearrange a connection between the filter and the drawer which allows the former to be extracted together with the latter only when required by the user.
  • the filter is separate from the washing agent compartment; in this way, any risk of filter contamination with detergents and soaps is completely eliminated.
  • reference numeral 1 designates as a whole a drawer for loading washing agents, designed for a household washing machine, not shown in the drawings because per se known; however, as already mentioned, the invention is also applicable to industrial washing machines or other household appliances posing the same problems discussed above.
  • the drawer 1 is housed in a support structure 4 secured to the washing machine, which is in fluid communication with a first wash liquid intake duct coming from the household water main or from other functional units (e.g. a tank of the washing machine or the tub, in the case of recirculation), as well as a second duct leading to the tub of the machine.
  • a first wash liquid intake duct coming from the household water main or from other functional units (e.g. a tank of the washing machine or the tub, in the case of recirculation), as well as a second duct leading to the tub of the machine.
  • the drawer 1 comprises one or more internal septa that divide its volume into different compartments for loading washing agents such as detergents, softeners, etc., and has a front wall 2 which, when the drawer is inserted, is preferably flush with the front panel of the machine, in particular whenever the front wall 2 must be hidden by the door when the latter is in the closed condition.
  • the structure 4 When wash liquid is supplied to the structure 4, it flows into the different compartments of the drawer 1, dragging along the detergent or the other agents towards the tub in order to wash the laundry in the rotary drum housed therein.
  • the structure 4 is fitted at the rear with a cup-like housing 40 that houses a filter 3: the latter is of the cartridge type, as commonly used for filtering liquids, and is not shown in detail in the drawings (because unnecessary for the purposes of the invention); of course, any other appropriate filter (made of synthetic fiber or metallic mesh) may nevertheless be used for this application.
  • the filter 3 can advantageously be used as a component of a wash liquid recirculation and/or storage system, which system may conveniently also include a selection device, which is the object of a separate patent application by the present Applicant.
  • the structure 4 further comprises a cover 7 (also called “shower” because it includes the water dispensing nozzles) for closing the top of the compartment 8 that houses the drawer 1, which compartment is also commonly referred to as “hopper” and has a narrowed shape of dimensions substantially coinciding with those of the drawer.
  • a cover 7 also called “shower” because it includes the water dispensing nozzles
  • a selector disc 30 is applied frontally to the filter 3 for selectively connecting the filter to the structure 4 or to the drawer 1 depending on the operating conditions, as will be further explained later on.
  • the selector disc 30 is controlled by a user through a control lever 5, to which it is connected by means of a transmission shaft 6.
  • the lever 5 is arranged on the front wall 2 of the drawer, so that is can be easily accessed and operated by a user.
  • the transmission shaft 6 is rotatably housed in the drawer 1 and substantially extends throughout the length thereof; it is integral with the lever 5, so that a rotation of the latter causes a corresponding rotation of the shaft 6 about its axis.
  • the transmission shaft has a front end 61 on which a profile of engagement with the lever 5 is mounted, so as to rotatably constrain the two elements to each other.
  • the opposite end of the shaft 6, i.e. the rear one, has a polygonal head 62 (that in the example shown is quadrangular, but may be hexagonal or the like), which is adapted to transmit torque to the selector disc 30: for this purpose, the disc 30 has a central hub 31 having a polygonal shape conjugated to that of the shaft head 62.
  • the selector disc 30 is integral with the filter 3, so that its rotation causes the whole filter 3 to rotate as well; however, this is not strictly necessary and the disc 30 may be free to rotate relative to the filter 3, being integral therewith for axial movements only.
  • the disc 30 has spokes 32 extending in a radial cross-like pattern from the hub 31, the intrados of which creates a region of engagement 33 for the drawer 1; on the outer edge of the disc there are one or more coupling teeth 34, 34a, 38 protruding radially from the outer profile of the filter 3, thus forming bayonet-style filter coupling elements.
  • Figs. 5 and 6 which show a detail of the underside of the drawer 1, it can be seen that the latter is fitted with at least one hook 11 that engages with the intrados 33 of one of the spokes 32 following counterclockwise rotations of the selector disc 30, while the filter seat 40 has a shoulder lug 41, 41a, 48 against which the teeth 34,34a,38 abut following clockwise rotations of the disc.
  • the lug 41 may be integral with the cover 7 instead of the hopper 8, in accordance with the embodiment of the invention shown in Fig. 7a .
  • the hook 11 and the shoulder 41 are angularly offset relative to the axis of the shaft 6: in this manner, a rotation of the disc 30 will cause a corresponding rotation of the cross-like spokes 32, so as to alternatively bring about two distinct conditions:
  • the filter 3 can be extracted together with the drawer 1: since the shoulder 41 is not engaged with the tooth 34, the filter 3 and the structure 4 are decoupled; at the same time, since the rear region 33 of a spoke 32 is engaged with the hook 11, the filter 3 and the drawer 1 are coupled to each other and can be extracted together.
  • the user can therefore use the drawer 1 freely to fill it with washing agents without necessarily having to extract the filter 3, e.g. by leaving the lever 5 in the position of Fig. 3 - corresponding to the above-described condition (ii) - thus not incurring in the problems of the prior art because the drawer can be filled freely without any risk of filter contamination.
  • a preferred embodiment of the invention comprises a device 80 for locking the lever 5, visible in Figs. 8 and 9 .
  • the device 80 comprises a latch 81 pushed by a spring 82, which prevents rotation of the polygonal protrusion 61 a of the front end 61 of the shaft 6, which is connected to the control lever 5 (not shown in Figs. 8 and 9 for clarity).
  • the shape of the latch 81 includes a notch 83 which, when the drawer 1 is closed, i.e. when the device 80 allows the shaft 6 to rotate (which condition corresponds to Fig.
  • the device 80 for locking the lever 5 allows the user to carry out filter cleaning operations without touching the filter with his/her hands.
  • Figs. 10 and 11 show a second safety device, which is also optional and which prevents the drawer 1 from fully closing if the filter has not been installed correctly.
  • This system comprises a push-button 45 actuated by a spring 46, both elements being arranged in a seat 47 adjacent to the housing 40 of the filter 3; the selector disc 30 comprises a protruding radial fin 38 (also visible in the detail of Fig. 5 ), which cooperates with the push-button 45 when the latter is in the condition corresponding to an installed filter 3, as shown in Fig. 10 .
  • the push-button 45 will directly push against the bottom of the drawer; therefore, the latter cannot be completely closed, thus warning a user that the filter 3 has not been installed.
  • the filter 3 remains stably housed in the seat 4 and can therefore operate correctly: this is also ensured by the fact that the filter must necessarily have been properly installed, since otherwise there would be no coupling between the notch 48 and the radial fin 38, the function of which is to stop the travel of the push-button 45, so that the drawer could not be fully closed.
  • the lever 5 can be turned, and its rotation is transmitted to the selector disc 30 of the filter 3 by the shaft 6: the protruding tooth 34 of the disc 30 then releases the shoulder lug 41 as shown in Fig. 6 , while one (or more) cross-like spoke(s) 32 engage(s) with the hook 11 prearranged on the bottom wall of the drawer 1.
  • the filter can be cleaned or replaced, and then reinstalled by proceeding in the reverse order to the above-described extraction procedure.
  • filter extraction and maintenance operations are made particularly easy by the present invention, which, in the preferred embodiment taken into account herein, also allows separating the filter from the drawer, so as to avoid any risk of contamination when washing agents are poured into the drawer.
  • the invention may be subject to many variations with respect to the description provided so far.
  • the configuration of the movable element used as a selector for connecting the filter 3 to its housing 40 in the fixed structure 4 or to the extractable drawer 1 may be very different from the disc 30.
  • a rocker arm may be used instead of the disc, or magnetic means may replace mechanical engagement means such as the tooth 34, the spokes 32 or the shoulder 41.
  • the rotation transmission shaft 6 may be subject to modifications as well, e.g. by employing mechanical gear transmissions or articulated lever systems.
  • lever 5 may advantageously be used as a safety element for preventing operation of the washing machine when the filter is not engaged or positioned properly.
  • lever 5 is so configured that, when it is turned in order to extract the filter as previously explained, it protrudes slightly from the front wall 2 of the drawer.
  • knob 50 including a push-button 51 that can be associated with an elastic return element (not shown in the drawings) which, by cooperating through a cam coupling with an inclined plane 52 arranged behind the front wall 2 of the drawer 1, prevents closing the door if the filter is not engaged or positioned properly, since in such a condition the push-button 51 will jut out of the front wall 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Centrifugal Separators (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Filtration Of Liquid (AREA)

Claims (15)

  1. Waschmaschine, umfassend ein Schubfach (1), das dafür vorgesehen ist, Waschmittel einzufüllen, und das aus einer Strukur (4) herausziehbar ist, welche bezüglich der Maschine fixiert ist, einen Filter (3) zum Filtern einer Wasch-Flüssigkeit, dadurch gekennzeichnet, dass sie auch Mittel (30, 31, 32, 33, 34) zum selektiven Koppeln des Filters (3) mit der Struktur (4) und dem Schubfach (1) umfasst, sodass das Schubfach entweder einzeln oder zusammen mit dem Filter (3) herausgezogen werden kann.
  2. Waschmaschine nach Anspruch 1, wobei der Filter (3) außen an dem Schubfach (1) angeordnet ist.
  3. Waschmaschine nach Anspruch 1 oder 2, wobei die selektiven Kopplungsmittel (30-34) ein Element (30) umfassen, das dem Filter (3) zugeordnet ist und zwischen einem ersten Betriebszustand, worin es mit dem Schubfach (1) in Eingriff steht und von der Struktur (4) gelöst ist, und einem zweiten Betriebszustand, worin das bewegliche Element (30) von dem Schubfach (1) gelöst ist und mit der Struktur (4) in Eingriff steht, beweglich ist.
  4. Waschmaschine nach einem der Ansprüche 1, 2 oder 3, wobei die selektiven Kopplungsmittel (30-34) durch einen außen an dem Schubfach (1) angeordneten Hebel (5) oder dergleichen betätigt werden können.
  5. Waschmaschine nach Anspruch 4, wobei der Hebel (5) die Rotation des beweglichen Elements (30) steuert, welches dem Filter (3) zugeordnet ist, um ihn selektiv entweder mit dem Schubfach (1) oder der Struktur (4) zu koppeln.
  6. Waschmaschine nach einem der vorhergehenden Ansprüche, wobei das bewegliche Element (30) der Kopplungsmittel eine Scheibe umfasst, die mit dem Steuerhebel (5) durch einen Schaft (6), der sich entlang des Schubfachs (1) erstreckt, gekoppelt ist und von diesem gedreht wird.
  7. Waschmaschine nach Anspruch 6, wobei die Scheibe (30) eine oder mehrere Teile umfasst, wie zum Beispiel einen Umfangszahn (34), eine Speiche (32), die sich radial von einer zentralen Nabe (31) erstreckt, oder dergleichen, die abhängig von der Drehrichtung der von dem Hebel (5) gesteuerten Scheibe selektiv mit entsprechenden Teilen (11, 41) des Schubfachs (1) und der fixierten Struktur (4) in Eingriff treten.
  8. Waschmaschine nach einem der vorhergehenden Ansprüche, umfassend eine erste Sicherheitsvorrichtung (80, 81, 82), die den Schaft (6) im Betriebszustand davor bewahrt, von dem Hebel (5) gedreht zu werden, und dadurch ein ungewünschtes Entfernen des Filters (3) verhindert.
  9. Waschmaschine nach Anspruch 8, wobei die Sicherheitsvorrichtung eine Klinke (80) umfasst, die elastisch auf ein Teil (62) des Schafts (6) wirkt, das daran Form-angepasst ist, um den Schaft am Drehen zu hindern.
  10. Waschmaschine nach einem der vorhergehenden Ansprüche, umfassend eine zweite Sicherheitsvorrichtung zum Sicherstellen des richtigen Einfügens des Schubfachs (1) in die Struktur (4), welche eine der Struktur (4) zugeordnete Aufnahme (41) umfasst, die einen Druckknopf (45) aufnimmt, der durch eine Feder (46) betätigt wird, die mit der Selektorscheibe (30) zusammenwirkt, um eine Rotation zuzulassen, wenn der Filter richtig in das entsprechende Gehäuse (40) einfügt wurde.
  11. Verfahren zum Entfernen eines Filters einer Waschmaschine, dadurch gekennzeichnet, dass es den Schritt umfasst, den Filter (3) selektiv mit einem Schubfach zu koppeln, welches aus der Waschmaschine herausziehbar ist, sodass der Filter zusammen mit dem Schubfach entfernt werden kann.
  12. Verfahren nach Anspruch 11, wobei der Schritt des selektiven Koppelns des Filters (3) mit dem Schubfach (1) von außerhalb des Letzteren durchgeführt wird.
  13. Verfahren nach Anspruch 12, wobei der Schritt des selektiven Koppelns des Filters (3) mit dem Schubfach (1) durchgeführt werden kann, wenn das Letztere geschlossen ist.
  14. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Schritt des selektiven Koppelns des Filters (1) im Anschluss an eine Rotation wenigstens eines Teils (30) davon durchgeführt wird, um an dem Schubfach bereitgestellte Verriegelungsmittel (41, 41 a, 48) in Eingriff zu bringen.
  15. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Filter außen an das Schubfach gekoppelt ist.
EP12711243.1A 2011-02-24 2012-02-21 Waschmaschine mit selektiv herausnehmbarem filter Not-in-force EP2678468B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2011A000161A IT1404532B1 (it) 2011-02-24 2011-02-24 Lavatrice con filtro estraibile selettivamente.
PCT/IB2012/050783 WO2012114269A1 (en) 2011-02-24 2012-02-21 Washing machine with selectively extractable filter

Publications (2)

Publication Number Publication Date
EP2678468A1 EP2678468A1 (de) 2014-01-01
EP2678468B1 true EP2678468B1 (de) 2015-08-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12711243.1A Not-in-force EP2678468B1 (de) 2011-02-24 2012-02-21 Waschmaschine mit selektiv herausnehmbarem filter

Country Status (3)

Country Link
EP (1) EP2678468B1 (de)
IT (1) IT1404532B1 (de)
WO (1) WO2012114269A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020251513A2 (en) 2019-06-14 2020-12-17 Arcelik Anonim Sirketi A washing machine comprising a filtering member

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3124674B1 (de) * 2014-03-27 2019-04-24 Haier Group Corporation Filtervorrichtung zum recycling von wasser einer waschmaschine mit selbstreinigungsfunktion und waschmaschine
WO2019081014A1 (en) * 2017-10-25 2019-05-02 E.G.O. Elektro-Gerätebau GmbH WASHING MACHINE RECEPTACLE, WASHING MACHINE, AND METHOD OF USING WASHING MACHINE
WO2020057820A1 (en) * 2018-09-17 2020-03-26 Arcelik Anonim Sirketi A washing machine comprising a hydrocyclone and a filtration hybrid arrangement
DE102019203576A1 (de) * 2019-03-15 2020-09-17 BSH Hausgeräte GmbH Wäschepflegegerät mit einem Filterelement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1379302A (fr) * 1963-12-30 1964-11-20 Lepper Gmbh Masch App Dispositif d'introduction, par entraînement au moyen de l'eau, des agents de lavagedans les machines à laver, notamment les machines à laver automatiques
IT1250542B (it) 1991-12-16 1995-04-08 Merloni Elettrodomestici Spa Macchina per lavare ed asciugare la biancheria.
GB2262595B (en) * 1991-12-16 1996-01-31 Merloni Elettrodomestici Spa Laundry washing and drying machine
IT248008Y1 (it) * 1999-01-19 2002-12-09 Electrolux Zanussi Elettrodome Essiccatore di biancheria a tamburo del tipo a esplusione

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020251513A2 (en) 2019-06-14 2020-12-17 Arcelik Anonim Sirketi A washing machine comprising a filtering member
EP3983599A4 (de) * 2019-06-14 2023-04-05 Arçelik Anonim Sirketi Waschmaschine mit einem filterelement

Also Published As

Publication number Publication date
EP2678468A1 (de) 2014-01-01
WO2012114269A1 (en) 2012-08-30
IT1404532B1 (it) 2013-11-22
ITTO20110161A1 (it) 2012-08-25

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