EP2921585B1 - Von oben befüllbare waschmaschine und wäschetrommel einer solchen maschine - Google Patents

Von oben befüllbare waschmaschine und wäschetrommel einer solchen maschine Download PDF

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Publication number
EP2921585B1
EP2921585B1 EP15156247.7A EP15156247A EP2921585B1 EP 2921585 B1 EP2921585 B1 EP 2921585B1 EP 15156247 A EP15156247 A EP 15156247A EP 2921585 B1 EP2921585 B1 EP 2921585B1
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EP
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Prior art keywords
drum
detergent
washing machine
laundry
laundry washing
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EP15156247.7A
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English (en)
French (fr)
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EP2921585A1 (de
Inventor
Aldo Fumagalli
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Candy SpA
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Candy SpA
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    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • 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
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/06—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about an inclined axis

Definitions

  • the present invention relates to a system for loading detergent into a laundry drum in top-loading laundry washing machines or washer-dryer machines.
  • a system for loading detergent into a laundry drum in top-loading laundry washing machines or washer-dryer machines.
  • the detergent loading system is equally intended for use in washer-dryer machines and, under predetermined conditions, in front-loading laundry washing machines.
  • DE4342626A describes a laundry machine with a laundry drum according to the preamble of claim 1.
  • the top-loading laundry washing machines typically comprise a support and holding structure, which is provided with a lid that gives access to a loading opening of a laundry drum.
  • the drum is rotatably supported within a washing tub located in the support and holding structure.
  • the drum is provided with one or more doors provided with special locking hooks to cover the loading opening during the washing or drying cycle.
  • the washing tub is suitable to contain the washing liquid during the laundry washing steps.
  • a system for loading the washing water is provided for, which is connectable to the water supply system.
  • a drain conduit is provided for on the washing tub bottom, with an associated drain pump that provides for the removal of the washing liquid from the tub and that controls, together with the loading system, the liquid level inside the tub.
  • an electric resistor is provided for, which is arranged inside the tub in the interspace between the tub wall and the laundry drum.
  • the laundry washing and washer-dryer machines of the prior art while being satisfactory from several aspects, have a high consumption of water, electric power, and detergent.
  • An underlying problem of the laundry washing machines having a top loading is that, particularly during the first washing steps, the detergent, instead of acting immediately and intensely with the laundry, is poured from the detergent basin on the circumferential wall of the laundry drum, from which it slides along the outer surface of the drum into the washing tub, where it builds-up before being mixed and poured again onto the drum.
  • the detergent concentration in the laundry is undesirably low.
  • a particular object of the invention is to allow the detergent and the water-detergent mixture poured onto the outer surface of the drum to enter it directly, without sliding away externally in the tub.
  • a further object of the invention is to provide a laundry washing machine with an improved detergent or water-detergent mixture supply system and, consequently, with improved washing performances.
  • a top-loading laundry washing machine is generally indicated by the reference 1.
  • the laundry washing machine 1 comprises a support and holding structure 2 provided with an upper access opening 3 that can be closed by a lid 4, which is preferably hinged to the support and holding structure 2.
  • the access opening 3 gives access to a loading aperture 5 of a perforated drum 6 which is rotatably supported about a rotational axis, which is typically, but not necessarily, horizontal, within a washing tub 7 located in the support and housing structure 2.
  • a circumferential wall 12 of the perforated drum 6 forms the above-mentioned loading aperture 5 and comprises one or more doors 8, 8', which are movable between a closure position, in which the doors 8 cover the loading aperture 5, and an opening position, in which they clear the loading aperture 5.
  • the one or more doors 8, 8' are hinged to the drum 6 and open outwardly.
  • the door(s) 8, 8' are slidably secured to the drum 6 and open in a direction that is substantially tangential or circumferential to the rotational axis of the drum 6.
  • the washing tub 7 is suitable to contain the washing liquid during the laundry washing steps.
  • a water loading system 9 is provided for, which is connectable to the water supply system.
  • a drain conduit is provided for on the washing tub bottom 7, with an associated drain pump that provides for the removal of the washing liquid from the tub 7 and that controls, together with the loading system 9, the liquid level inside the tub 7.
  • an electric resistor (not shown) is provided for, which is arranged inside the tub 7 in the interspace between the tub 7 wall and the drum 6.
  • the laundry washing machine 1 further comprises a detergent basin 10 in connection with the water loading system 9 and having one or more outlet openings 11, 11', which are arranged, during the operation of the laundry washing machine 1 and when the lid 4 closed, directly on top of the circumferential wall 12 of the drum 6.
  • the detergent basin 10 may comprise different compartments to receive different detergent substances, additives, softeners, etc., for example, a liquid detergent compartment 13, a powdery detergent compartment 14, a pre-wash detergent compartment 15, a softener compartment 16.
  • the individual compartments 13, 14, 15, 16 can have discrete filling openings 18 and windows 19 with a mark 17 of the filling level, e.g., a maximum filling level.
  • the circumferential wall 12 of the drum 6 forms a funnel 21 for receiving the detergent or the water-detergent mixture.
  • the funnel 21 comprises a cavity 23 (formed in an outer surface 22 of the circumferential wall 12) that is open and facing outwardly of the drum 6, as well as a plurality of through holes 24 extending from the cavity 23 into the drum 6.
  • the funnel 21 comprises a cavity 23 (formed in an outer surface 22 of the outer, e.g., circumferential, 12 and/or side 42 wall) open and facing radially outwardly the drum 6, as well as a plurality of through holes 24 extending from the cavity 23 into the drum 6.
  • the funnel 21 could be formed in one or more portions 43 bulging outwardly of the side wall 42.
  • the laundry washing machine 1 is configured so as to position, during one or more detergent introduction steps, the drum 6 with the funnel 21 with respect to the at least one outlet opening 11, 11' in a detergent transfer position in which a flow 30 of detergent or water-detergent mixture exiting the outlet openings 11, 11' is received in the funnel 21.
  • a control system 25, e.g., an electronic board, in connection with a motor 26 that rotates the drum 6 and with one or more electrovalves 27 of the water loading system 9, is configured so as to position, during one or more detergent introduction steps, the funnel 21 under the outlet opening 11, 11' and substantially vertically aligned therewith. In this manner, the flow 30 of detergent or water-detergent mixture coming from the outlet opening 11, 11' may fall by gravity directly into the cavity 23 of the funnel 21.
  • control system 25 is configured to maintain the detergent transfer position for a time interval from 5 seconds to 240 seconds, preferably 5 seconds to 60 seconds.
  • control system 25 and the water loading system 9 are configured so as to generate the above-mentioned flow 30 of detergent or water-detergent mixture in the form of a forced or pressurized jet, so as to accelerate the passage of the detergent through the funnel 21 into the drum 6.
  • the outlet opening(s) 11, 11' is/are formed from tubular portions 29 extending or projecting downwardly (during the operation of the laundry washing machine 1 and/or when the lid 4 is closed) from a bottom wall 28 of the detergent basin 10, so as to allow the formation of a liquid column that increases the conveying pressure of the detergent or water-detergent mixture flow 30.
  • tubular portion(s) 29 can be tapered toward the lower end (forming the outlet opening 11, 11') in order to obtain a detergent flow 30 that is as compact and targeted as possible.
  • the detergent basin 10 can form at least one inverted syphon 32 with an auxiliary discharge opening 31 and configured to activate and empty the detergent basin or one or more individual detergent compartments when a threshold filling level 33 is reached ( Fig.3 ). This ensures an emergency operation of the laundry washing machine 1 even in the case of an obstruction of the outlet opening 11, 11' of the detergent basin 10.
  • the inverted syphon 32 can be formed by an ascending tube 34 projecting from the basin bottom upwardly, and a descending tube 35, which is inserted from above onto the ascending tube 34 and having a closed upper end.
  • At least one of said funnels 21 is shaped, preferably by injection moulding, in a plastic portion 36 of the circumferential wall 12. This facilitates the implementation of the (relatively high) depth and optimal shape of the cavity 23 and the optimal shape and length of the through holes 24, which could be more hardly obtained from stainless steel by a press.
  • the plastic portion 36 is formed in at least one of the doors 8, 8'. These can be formed, for example, by a metal load-bearing frame and the plastic portion 36, which is for example, over-moulded on the metal frame. This involves a synergistic advantage in terms of handling comfort of the door by a user (for example, a women having delicate hands), manufacturing ease of the door 8, 8' and implementation of the funnel 21.
  • the through holes 24 can be formed in tubular portions projecting from an inner surface of the circumferential wall 12 towards the inside of the drum. By virtue of the length/diameter ratio, larger than 1 of the through holes 24, they create (after an initial filling thereof) a suction, which further promotes the transfer of the detergent from the outer cavity 23 into the drum 6.
  • the funnel(s) 21 can be also formed in a metal portion of the circumferential wall 12.
  • the funnel(s) 21 can be formed in the door 8, 8' and/or in a zone of the circumferential wall 12 far from the door, for example, diametrically opposite it, and/or at a laundry dragging blade 20 of the drum 6.
  • the dragging blade could be formed, for example, by the circumferential wall 12 or connected from inside to the circumferential wall 12, and the cavity 23 of the funnel 21 could be formed inside the overall dimensions of the dragging blade or by the dragging blade itself.
  • the through holes 24 of the funnel 21 have a width or diameter that is larger than the diameter of small holes 37 formed in the circumferential wall 12 outside the funnel 21. This allows a better transfer of the water-detergent mixture in the localised zone of the funnel 21 (possibly, made of plastic) and obviates damages to the laundry due to too large holes 37 in the remaining zones of the circumferential wall 12 that is made of steel sheet.
  • the through holes 24 of the funnel 21 have a width or diameter ranging from 3mm to 12 mm, preferably 5mm to 8mm, still more preferably about 6mm.
  • the cavity 23 of the funnel 21 preferably has a width 38 transversal to the direction of the through holes 24 ranging between 6 ... 15 times, preferably from 8 12 times, the width of the individual through holes 24.
  • the width 38 of the cavity can be about 4cm ... 12 cm, preferably 4cm ... 8cm, still more preferably about 5cm 8cm.
  • the depth (radial with respect to the drum rotational axis) of the cavity 23 can range from 0.5 cm to 10 cm, preferably from 1cm to 6cm, still more preferably from 1 cm to 4 cm.
  • the shape (in a top view) of the cavity 23 can be, for example, circular, oval, or polygonal.
  • the funnel 21, particularly the cavity 23, can be suitable to at least temporarily receive and hold a tablet 41 or capsule containing a substance for treating laundry, for example, a pre-washing tablet or capsule.
  • the cavity 23 can have a fixed, small restraint edge 40 for a snap-, interference-, or shape-fitting with the tablet 41.
  • the small restraint edge 40 can be movable between an open position, in which it allows the insertion of the tablet 41 into the cavity 23, and a closed position, in which the small restraint edge 40 holds the tablet 41 in the cavity 23.
  • the actuation (dissolution, dispensing, release) of the treating substance of the tablet 41 or capsule occurs by the water and/or detergent flow 30 directed into the funnel and acting on the tablet 41 or capsule.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (15)

  1. Wäschetrommel (6) für eine von oben beschickbare Wäschewaschmaschine (1) des Typs, welcher einen in Verbindung mit einem Wasserladesystem (9) stehenden Reinigungsmittelbehälter (10) aufweist, und welche eine oder mehrere Auslassöffnungen (11, 11') aufweist, welche oberhalb einer äußeren Wand (12, 42) der in der von oben beschickbaren Wäschewaschmaschine (1) montierten Trommel (6) angeordnet sind, um in der Lage zu sein, eine Wasser-Reinigungsmittel-Strömung (30) an die äußere Wand (12, 42) der Trommel (6) abzugeben,
    wobei die die äußere Wand (12, 42) aufweisende Trommel (6) eine Umfangswand (12) umfasst, welche einen Wäschebeschickungsdurchlass (5) und eine oder mehrere Türen (8, 8') zum Öffnen und Schließen des Wäschebeschickungsdurchlasses (5) ausbildet,
    wobei die äußere Wand (12, 42) einen oder mehrere Trichter (21) zum Empfangen und Übertragen wenigstens eines Teils der Wasser-Reinigungsmittel-Strömung (30) in die Trommel (6) ausbildet, wobei der Trichter (21) eine Kavität (23), welche offen ist und nach radial außen von der Trommel (6) weist, sowie eine Mehrzahl von Durchgangslöchern (24) aufweist, welches sich von der Kavität (23) in die Trommel (6) erstrecken, dadurch gekennzeichnet, dass der eine oder die mehreren Trichter (21) in der einen oder den mehreren Türen (8, 8') ausgebildet ist/sind.
  2. Von oben beschickbare Wäschewaschmaschine (1), umfassend:
    - ein Gehäuse (2) mit einer oberen Zugangsöffnung (3), welche durch eine Klappe (4) geöffnet und geschlossen werden kann,
    - eine perforierte Trommel (6) nach Anspruch 1, welche drehbar innerhalb einer Waschwanne (7) in der Haltestruktur (2) angeordnet ist,
    - einen Waschmittelbehälter (10) in Verbindung mit einem Wasserladesystem (9) und aufweist eine oder mehrere Auslassöffnungen (11, 11'), welche oberhalb der äußeren Wand (12, 42) der Trommel (6) angeordnet sind, um in der Lage zu sein, eine Wasser-Reinigungsmittel-Strömung (30) an die äußere Wand (12, 42) der Trommel (6) abzugeben,
    - eine Regelungs-/Steuerungsvorrichtung (25) in Verbindung mit einem Motor (26) für die Drehung der Trommel (6) und ein oder mehrere Elektroventile (27) des Wasserladesystems (9), wobei die Regelungs-/Steuerungsvorrichtung (25) konfiguriert ist, um während einem oder mehreren Reinigungsmitteleinführungsschritten die Trommel (6) mit dem Trichter (21) für eine vorbestimmte Dauer in einer Reinigungsmittelübertragungsposition zu positionieren, in welcher die Wasser-Reinigungsmittel-Strömung (30), welche die Auslassöffnung (11, 11') verlässt, in den Trichter (21) geleitet wird.
  3. Wäschewaschmaschine (1) nach Anspruch 2, wobei die vorbestimmte Dauer der Reinigungsmittelübertragungsposition in einem Zeitintervall liegt, welches ausgewählt ist aus der Gruppe bestehend aus:
    5 Sekunden bis 240 Sekunden,
    5 Sekunden bis 60 Sekunden.
  4. Wäschewaschmaschine (1) nach Anspruch 2, wobei sich in der Reinigungsmittelübertragungsposition der Trichter (21) unter der Auslassöffnung (11, 11') befindet und im Wesentlichen vertikal mit der Auslassöffnung (11, 11') ausgerichtet ist.
  5. Wäschewaschmaschine (1) nach Anspruch 2, wobei das Regelungs-/Steuerungssystem (25) und das Wasserladesystem (9) eingerichtet sind, um die Wasser-Reinigungsmittel-Strömung (30) als einen gezwungenen oder unter Druck stehenden Strahl zu erzeugen, um den Reinigungsmitteldurchtritt durch den Trichter (21) innerhalb der Trommel (6) zu beschleunigen.
  6. Wäschewaschmaschine (1) nach Anspruch 2, wobei die Auslassöffnung (11, 11') aus einem röhrenförmigen Abschnitt (29), welcher sich von einer Bodenwand (28) des Reinigungsmittelbehälters (10) erstreckt, ausgebildet ist.
  7. Wäschewaschmaschine (1) nach Anspruch 6, wobei sich der röhrenförmige Abschnitt (29) in Richtung eines unteren Endes davon, welcher die Auslassöffnung (11, 11') ausbildet, verjüngt.
  8. Wäschewaschmaschine (1) nach Anspruch 2, wobei der Reinigungsmittelbehälter (10) wenigstens einen umgekehrten Siphon (32) mit einer Hilfsauslassöffnung (31) ausbildet und dazu eingerichtet ist, ein oder mehrere Reinigungsmittelabteile des Reinigungsmittelbehälters (10) zu aktivieren und zu leeren, wenn ein Fülllevel-Schwellenwert (33) erreicht ist.
  9. Wäschewaschmaschine (1) nach Anspruch 2, wobei wenigstens ein des einen oder der mehreren Trichter (21) durch Spritzgießen in einem Plastikabschnitt (36) ausgebildet ist.
  10. Wäschewaschmaschine (1) nach Anspruch 9, wobei der Plastikabschnitt (36) in wenigstens einer der Türen (8, 8') ausgebildet ist.
  11. Wäschewaschmaschine (1) nach Anspruch 2, wobei die Durchgangslöcher (24) in röhrenförmigen Abschnitten ausgebildet sind, welche von einer inneren Fläche der Umfangswand (12) in Richtung der Innenseite der Trommel (6) hervorstehen.
  12. Wäschewaschmaschine (1) nach Anspruch 2, wobei die Durchgangslöcher (24) eine Breite aufweisen, welche größer als der Durchmesser von kleinen Löchern (37) ist, welche in der Umfangswand (12) außerhalb des Trichters (21) ausgebildet sind.
  13. Wäschewaschmaschine (1) nach Anspruch 12, wobei die Durchgangslöcher (24) eine Breite aufweisen, welche ausgewählt ist aus der Gruppe bestehend aus:
    3 mm bis 12 mm,
    5 mm bis 8 mm,
    6 mm,
    wobei die Kavität (23) eine Breite (38) transversal zu der Richtung der Durchgangslöcher (24) aufweist, welche ausgewählt ist aus der Gruppe bestehend aus:
    dem 6 bis 15-fachen der Breite der individuellen Durchgangslöcher (24),
    dem 8 bis 12-fachen der Breite der individuellen Durchgangslöcher (24),
    wobei die Breite (38) der Kavität ausgewählt ist aus der Gruppe bestehend aus:
    4 cm bis 12 cm,
    4 cm bis 8 cm,
    5 cm bis 8 cm,
    wobei eine Tiefe der Kavität (23) ausgewählt ist aus der Gruppe bestehend aus:
    0,5 cm bis 10 cm,
    1 cm bis 6 cm,
    1 cm bis 4 cm.
  14. Wäschewaschmaschine (1) nach Anspruch 12,
    wobei die Kavität (23) eine Breite (38) transversal zu der Richtung der Durchgangslöcher (24) aufweist, welche in einem Bereich zwischen dem 6 bis 15-fachen oder von dem 8 bis 12-fachen der Breite der individuellen Durchgangslöcher (24) liegt,
    wobei die Breite (38) der Kavität in einem Bereich liegt:
    - zwischen 4 cm und 12 cm oder
    zwischen 4 cm und 8 cm oder
    - zwischen 5 cm und 8 cm,
    wobei eine Tiefe der Kavität (23) in einem Bereich liegt:
    - von 0,5 cm bis 10 cm oder
    - von 1 cm bis 6 cm oder
    - von 1 cm bis 4 cm.
  15. Wäschewaschmaschine (1) nach Anspruch 2, wobei die Kavität (23) gestaltet ist, um zumindest zeitweise eine Tablette (41) oder eine Kapsel, welche eine Substanz zum Behandeln von Wäsche enthält, aufzunehmen und zu halten.
EP15156247.7A 2014-03-21 2015-02-24 Von oben befüllbare waschmaschine und wäschetrommel einer solchen maschine Active EP2921585B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20140483 2014-03-21

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EP2921585A1 EP2921585A1 (de) 2015-09-23
EP2921585B1 true EP2921585B1 (de) 2017-08-16

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EP (1) EP2921585B1 (de)
CN (1) CN104928882B (de)
ES (1) ES2647474T3 (de)
RU (1) RU2683195C2 (de)

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Publication number Priority date Publication date Assignee Title
CN109554893B (zh) * 2017-09-26 2022-04-12 合肥海尔滚筒洗衣机有限公司 顶开式滚筒洗衣机及其内筒
DE102018125476A1 (de) * 2018-10-15 2020-04-16 Miele & Cie. Kg Waschmaschine
CN111379141B (zh) * 2018-12-29 2023-05-02 合肥海尔洗衣机有限公司 一种洗衣机的上盖结构及具有该上盖结构的洗衣机
CN114108219A (zh) * 2020-08-28 2022-03-01 青岛海高设计制造有限公司 洗衣机
CN114990856B (zh) * 2022-07-05 2024-03-08 湖北美的洗衣机有限公司 凝珠投放盒组件、衣物处理剂盒和洗涤设备

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IT1204688B (it) * 1987-06-05 1989-03-10 San Giorgio Elettrodomesti Macchina lavabiancheria con cestello munito di mezzi atti alla distribuzione dell'acqua di lavaggio
DE4342626C2 (de) * 1993-12-14 2002-10-02 Bsh Bosch Siemens Hausgeraete Einrichtung zum Zuführen von Zulaufwasser und/oder Waschmittel in einer mantelseitig beschickbaren Trommelwaschmaschine
CN1066223C (zh) * 1995-05-31 2001-05-23 Bsh博施及西门子家用器具有限公司 外壳侧加料的滚筒式洗衣机的加水和/或加洗涤剂的装置
JP2004194822A (ja) * 2002-12-17 2004-07-15 Sanyo Electric Co Ltd ドラム式洗濯機
DE602008001669D1 (de) * 2008-06-24 2010-08-12 Candy Spa Vorrichtung zur Abgabe von Wasch- und/oder Reinigungsflüssigkeit in eine Waschmaschinendrehtrommel
JP2014050501A (ja) * 2012-09-06 2014-03-20 Panasonic Corp 洗濯機

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Publication number Publication date
ES2647474T3 (es) 2017-12-21
EP2921585A1 (de) 2015-09-23
RU2015109948A (ru) 2016-10-10
RU2015109948A3 (de) 2018-09-11
CN104928882A (zh) 2015-09-23
CN104928882B (zh) 2019-05-17
RU2683195C2 (ru) 2019-03-26

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