EP1796526B1 - Procede de distribution dosee d'un agent liquide, notamment pour un lave-vaisselle - Google Patents

Procede de distribution dosee d'un agent liquide, notamment pour un lave-vaisselle Download PDF

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Publication number
EP1796526B1
EP1796526B1 EP05759062A EP05759062A EP1796526B1 EP 1796526 B1 EP1796526 B1 EP 1796526B1 EP 05759062 A EP05759062 A EP 05759062A EP 05759062 A EP05759062 A EP 05759062A EP 1796526 B1 EP1796526 B1 EP 1796526B1
Authority
EP
European Patent Office
Prior art keywords
space
cassette member
chamber
delivery
wall
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
EP05759062A
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German (de)
English (en)
Other versions
EP1796526A1 (fr
Inventor
Giuseppe Marone
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.)
Elbi International SpA
Original Assignee
Elbi International SpA
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 Elbi International SpA filed Critical Elbi International SpA
Priority to PL05759062T priority Critical patent/PL1796526T3/pl
Publication of EP1796526A1 publication Critical patent/EP1796526A1/fr
Application granted granted Critical
Publication of EP1796526B1 publication Critical patent/EP1796526B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4409—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants by tipping containers or opening their lids, e.g. with the help of a programmer

Definitions

  • This invention relates to a device for the metered delivery of a liquid agent, particularly for a dishwashing machine.
  • the invention relates to a device for the metered delivery of a rinse agent in a dishwashing machine which has a front door which will swing about a horizontal axis for access to the wash chamber, the delivery device being designed to be mounted on the inside of the said door in such a way that it can adopt an essentially vertical working position when it is in use and an inclined or at least approximately horizontal position when at rest, when the said door is closed and opened respectively.
  • Such device is known, for instance from document US 2003/0160064 .
  • This device comprises
  • these devices inevitably comprise a plurality of chambers of rather complex shapes has hitherto made it virtually impossible to manufacture the body of these devices of plastics material in a single injection moulding operation.
  • the body of these delivery devices of plastics material is manufactured in two main parts, a front and a rear part respectively, which are welded together for example by means of a hot blade welding device.
  • One object of this invention is to provide a device for the metered delivery of a liquid agent, in particular for the delivery of a rinse agent in a dishwashing machine, which has an innovative structure which makes it possible to construct the body of the device from plastics material in a single injection moulding operation without requiring the joining of separate parts through a welding device as has instead been the case according to the prior art.
  • a device for the metered delivery of a liquid agent of the type specified above characterized in that at least the accumulation chamber and the metering chamber are constructed in a cassette member separate and distinct from the said body and removably inserted into a space provided in that body.
  • integrated delivery device 1 is shown in an anterior frontal view, that is it is illustrated by the part which when in operation faces the wash chamber.
  • integrated delivery device 1 is shown in a posterior view in which it is illustrated by the part facing the intermediate layer or internal region of the door of the dishwashing machine.
  • integrated delivery device 1 is illustrated in the vertical working position which it adopts when the door of the dishwashing machine is closed. The same applies to the partial illustration shown in Figure 5 .
  • integrated delivery device 1 is illustrated in an anterior view, but in the filling or resting position which it adopts when the door of the dishwashing machine is open.
  • the door of a dishwashing machine is hinged to the structure of the machine along its bottom side and is orientated in a filling or resting position in which it is inclined with respect to the vertical, and is in general essentially horizontal, to permit the dishes which have to be washed to be placed in the wash chamber or vessel and to remove the washed dishes, and in a vertical working position in which that door closes off the wash chamber, preventing the washing bath from escaping from the machine.
  • Integrated delivery device 1 mounted in the door of a dishwashing machine is therefore also operatively orientatable between an at least approximately horizontal filling or resting position in which that device can receive a fill or replenishment of liquid rinse agent and a detergent agent, and a vertical working position in which that device faces the interior of the wash chamber and makes it possible to deliver doses of the detergent agent and the rinse agent into the wash bath and the rinse bath respectively.
  • rinse agent any product which can be used as a "brightener”, or, according to the name more current in the English-speaking environment, a “rinse-agent”.
  • Integral delivery device 1 comprises a body 3 of plastics material of elongated shape inserted in a corresponding opening provided in inner panel 2 of the door of a dishwashing machine.
  • body 3 of the device according to this invention is constructed of a single piece through a single injection moulding operation.
  • FIG. 1 With reference to Figure 2 , provision is made in the anterior surface of body 3 which is designed to face the wash chamber of the machine for a receptacle 5 which is designed to receive a dose of detergent, for example powder detergent.
  • 6 in Figures 1 and 2 indicates a cover which in the illustration provided by way of example is movably mounted with respect to body 3 and can adopt a closed position ( Figure 1 ) in which it seals off receptacle 5 for the detergent agent and an open position ( Figure 2 ) in which it exposes that receptacle, permitting the detergent agent to fall into the wash chamber by gravity.
  • cover 6 The passage of cover 6 from the closed position to the open position can be controlled by electrically-controlled actuator means which are in themselves known, a description of which is in any event not essential for the purposes of understanding this invention.
  • FIG. 7 in Figures 1 , 2 , 4 and 5 indicates another cover which is hinged to body 3 along its bottom side about a horizontal axis indicated by 8-8.
  • Rotatable cover 7 is associated with the device for the metered delivery of the liquid rinse agent which more specifically constitutes the object of this invention.
  • an internal space 9 of essentially rectangular space is defined within the body 3 of delivery device 1. This space is bounded by a rear wall 10, side walls 11-14, facing each other in parallel pairs, and a shaped anterior wall 15 facing rear wall 10 (see in particular Figure 5 ).
  • a rectangular opening 16 of elongated shape surrounded by a projecting rim 17 is provided in the upper part of frontal wall 15. This opening 16 and associated rim 17 extend horizontally beyond wall 14 bounding space 9, towards the right when looking at Figure 5 .
  • a delivery chamber 18 is provided in the area facing opening portion 16 which goes beyond wall 14.
  • this chamber also has a substantially rectangular shape and is bounded below by a horizontal wall 19, above by a horizontal wall 20, the anterior edge of which is slightly set back with respect to the edge of rim 17, and laterally by wall 14 and opposite that a wall 21.
  • Opening 22 places delivery chamber 18 in communication with a discharge passage indicated by 23 in Figure 5 , which opens frontally at an opening 24 facing cover 7 when the latter is closed and which allows a dose of rinse agent originating from delivery chamber 18 to be discharged into the wash chamber.
  • opening 22 is associated with an electrically controlled interception device of a type which is likewise in itself known.
  • an electrically controlled interception device of a type which is likewise in itself known.
  • Such devices are well known to those skilled in the art, and this has not therefore been illustrated in the drawings to avoid excessively burdening the graphical illustration.
  • an interception device normally obstructs opening 22 and opens it for the delivery of a dose of rinse agent when it is excited through an electrical command.
  • frontal wall 15 has a portion of wall 15a which projects towards the observer so as to permit an increase in the internal capacity of space 9 in the portion of that space beneath the lower edge or margin of opening 16.
  • the volume of the region within the said projecting portion of wall 15a also acts as an "air trap" which restricts filling in the horizontal position (door open) and lowers the level of rinse agent in the vertical position (door closed).
  • seal 25 which in the embodiment illustrated is substantially 8-shaped.
  • seal 25 forms a liquid-tight seal against the edge of projecting rim 17, and against an anterior edge portion 14a of wall 14.
  • Cover 7 is held in the closed position illustrated in Figure 1 by a releasable immobilising device of a type which is in itself known.
  • resilient return means associated with cover 7, such as for example a torsion spring (not shown) cause rapid rotation of the latter from the closed position shown in Figure 1 to the open position shown in Figures 2 , 4 and 5 .
  • the portion of the integrated delivery device which is designed to provide the metered delivery of rinse agent also comprises a cassette member indicated as a whole by 30 in Figures 2 , 4 and 6 to 10 .
  • Cassette member 30 has in general an essentially rectangular shape and can be removably inserted through the portion of opening 16 of body 2 of the device lying between walls 13 and 14 as may be seen in particular from a comparison between Figures 2 and 4 .
  • Cassette member 30 is conveniently manufactured from injection moulded plastics material.
  • cassette member 30 has a bottom wall 31 and four main side walls indicated by 32-35.
  • wall 31 and wall 32 are rectangular.
  • wall 33 has an opening 36 of essentially elongated rectangular shape which extends between walls 32 and 34 adjacent to wall 31.
  • Cassette member 30 also has a rectangular wall 37 extending between walls 33 and 35, substantially parallel thereto. As may be seen in particular in Figures 6 and 7 , wall 37 starts from wall 32 and extends up to a certain distance from opposite wall 34. A wall 38, parallel to a facing wall 32, connects wall 37 with wall 35.
  • walls 31, 32, 35, 37 and 38 define a first space 40 of rectangular shape, hereinafter referred to as the accumulation chamber.
  • 39 in Figures 6 and 7 indicates a wall which extends between walls 32, 33, 34 and 37, which is substantially parallel to wall 31 or, preferably, slightly inclined in a downward direction from wall 32 towards wall 34.
  • a further wall 41 which is preferably parallel thereto.
  • This wall extends for some distance from wall 33 and together with the upper portion of wall 34 and an extension 39a ( Figure 6 ) of wall 39 defines a channel 42 ( Figures 6 and 7 ) which extends in an essentially transverse direction with respect to the space or chamber 43 defined by walls 32, 33, 34, 37 and 39 ( Figures 6 and 7 ).
  • Space 43, with its bottom wall 39, which is preferably inclined (with respect to the horizontal plane when looking at Figures 6 and 7 ), will be referred to below as the metering chamber.
  • channel 42 opposite chamber 43 is connected to an angled pouring spout indicated as a whole by 44 in Figures 2 , 4 and 6 to 10 .
  • This spout is defined by a further extension 39b of wall 39 ( Figure 7 ) and by two side walls 45 and 46 which join walls 34 and 41 respectively, essentially at right angles (see also Figure 8 ).
  • side wall 35 has a shape essentially in the form of an L, with an appendage or branch of wall 35a which joins wall 41.
  • An opening indicated by 48 in Figures 6 and 8 is provided in wall 31, between walls 38 and 41.
  • a transit region or chamber 49 which communicates with opening 47 and opening 48 and is also open on the upper sides (looking at Figure 6 ) of walls 38, 41 and 35a, is defined in this way between walls 41 and 38.
  • an overflow edge or weir 50 corresponding to a local lowering of a side wall of metering chamber 43, is defined between metering chamber 43 and transit chamber 49.
  • wall 35 is slightly set back with respect to the adjacent outer edges of walls 32 and 31, and also with respect to wall 46 which helps to bound pouring spout 44.
  • This set-back arrangement of wall 45 is not however essential.
  • An opening 36 which provides access to a chamber indicated by 51 in Figures 6 , 9 and 10 is provided on the side of cassette member 30 corresponding to the outer side of wall 33, as already mentioned previously.
  • body 3 of integrated delivery device 1 may be manufactured from plastics material through a single injection moulding operation using moulds with movable cores.
  • Cassette member 30 may also be manufactured in this way.
  • Cassette member 30 may therefore be inserted into housing or space 9 of body 3 in such a way that its walls 32, 33 and 34 lie adjacent to walls 13, 11 and 14 respectively of space 9.
  • Cassette member 30 is inserted by sliding it on the portion of wall 17a formed by the projecting rim 17 of opening 16. This portion of wall 17a has an extension which can support and hold cassette member 30 inserted into space 9 in position.
  • Space 9 is not wholly occupied by cassette member 30 inserted within it: the portion of that space lying between wall 12 and wall 31 of cassette member 30 is in fact open and able to receive a quantity of rinse agent, as will be more particularly described below.
  • pouring spout 44 lies adjacent to delivery chamber 18 into which it may pour a dose of rinse agent in the manner and under conditions which will be more particularly described below.
  • the metered delivery device for a rinse agent according to the invention essentially operates as follows.
  • cassette member 30 After positioning cassette member 30 in space 9 the user can fill the delivery device by pouring a quantity of liquid rinse agent onto wall 35 of cassette member 30. This operation is carried out with the door of the dishwashing machine open, and with device 1 positioned in the manner illustrated in Figure 4 , and in particular with cassette member 30 substantially positioned in the position shown in Figure 9 .
  • the rinse agent poured onto wall 35 enters opening or passage 47 and descends by gravity, progressively filling space 9.
  • Metering chamber 39 and the lower part of space 9 which is not occupied by cassette member 30 are first filled.
  • Space or chamber 51, which is full of air, does not however fill, and relative to bottom wall 10 of space 9 this acts substantially like an upturned glass.
  • the level of that agent in space 9 rises and also begins to fill accumulation chamber 40 and, at least partly, channel 42, and the portion of space 9 which is not occupied by cassette member 30.
  • the rinse agent in cassette member 30 and space 9 may be raised to a level higher than that illustrated by way of indication in Figure 9 , and may in the limit overtop wall 35.
  • seal 25 bears against projecting rim 17 of opening 16 and edge 14a of wall 14.
  • the door of the dishwashing machine can then be placed in the vertical closed or operating position.
  • the orientation or trim of cassette member 30 also changes, from the resting or filling position illustrated in Figure 9 to the working position illustrated in Figure 10 .
  • the unit controlling the machine sends a pulse to the interception device associated with delivery chamber 18, and that device releases opening 22 as a result of which the quantity of rinse agent contained in chamber 18 can flow towards the wash chamber, passing through conduit 23, discharge opening 24, then passing through a space provided between body 3 of the delivery device and cover 7 which remains in the closed position.
  • chamber 51 which is initially full of air and not filled with rinse agent, represents a "buffer" or unused volume, which is however useful to ensure that after complete filling of the delivery device the level of rinse agent in the delivery device substantially reaches a predetermined level which is lower than or at most equal to the level of the lower side of opening 16 when the door of the dishwasher machine is closed.
  • cassette member 30 is mounted in space 9 rotatably about an axis (shaft) parallel to walls 13 and 11 of that space, and has an anterior appendage or fin which is located in front of the anterior front wall 15a of body 3.
  • This appendage or fin of the cassette member is provided with snap retaining means (for example a plurality of openings) capable of acting together with associated retaining members (such as for example projecting retaining pegs) provided on the front wall of body 3 (wall 15a), in such a way that the said cassette member can be immobilised in space 9 in a plurality of different angular positions about the said axis (shaft).
  • Cassette member 30 adjacent to spout 44 has a projecting shape capable of extending into chamber 18 by a different amount depending upon the angular position in which cassette member 30 is immobilised in space 9, as a consequence varying the volume of that chamber 18 which can be occupied by the rinse agent, and correspondingly varying the quantity or dose which can be delivered during the rinse stage of a wash cycle.

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  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)

Claims (10)

  1. Dispositif (1) pour la distribution dosée d'un agent liquide, en particulier un agent de rinçage, dans une machine de lavage, en particulier un lave-vaisselle, pourvu d'une porte avant pivotant sur un axe horizontal pour accéder à la chambre de lavage, le dispositif de distribution (1) étant conçu pour être monté sur l'intérieur (2) de ladite porte de manière telle qu'il adopte une position de fonctionnement verticale lors de l'utilisation et une position de repos inclinée ou approximativement horizontale lorsque ladite porte (2) est fermée et ouverte respectivement,
    le dispositif de distribution (1) comprenant :
    un corps creux (3) de matière plastique dans lequel sont définis une chambre ou un réservoir d'accumulation (40) pour recevoir une quantité dudit agent correspondant à une pluralité de doses ;
    une chambre de dosage (43), en communication hydraulique avec ladite chambre d'accumulation (40), et avec une capacité pour une dose de l'agent de rinçage ; et
    une chambre de distribution (18) conçue pour recevoir un écoulement dudit agent liquide à partir de la chambre de dosage (43) lorsque le dispositif de distribution (1) est déplacé dans la position de fonctionnement, et alors pour distribuer ledit agent à
    la chambre de lavage de la machine à travers un passage de sortie (22, 23) prévu dans ledit corps (3) et normalement obstrué par un moyen d'interception, qui est adapté pour l'ouvrir pour la distribution d'une dose d'agent de rinçage lorsqu'il est excité par une commande électrique ;
    le dispositif de distribution (1) étant caractérisé en ce qu'une partie de la chambre d'accumulation (40) et la chambre de dosage (43) sont prévues dans un élément cassette (30) qui est séparé et distinct dudit corps (3) et est inséré de façon amovible dans un espace (9) prévu dans ledit corps (3).
  2. Dispositif selon la revendication 1, dans lequel un espace (9) dans lequel l'élément cassette (30) peut être inséré et duquel il peut être retiré est prévu dans ledit corps (3), ledit espace (9) possédant une capacité supérieure au volume dudit élément cassette (30) et possédant une ouverture (16) pour l'insertion et le positionnement de l'élément cassette (30) situé dans la partie supérieure dudit espace (9) lorsque le dispositif de distribution (1) est dans ladite position de fonctionnement.
  3. Dispositif selon la revendication 1 ou 2, dans lequel l'élément cassette (30) comporte un bec verseur (44) qui communique avec la chambre de dosage (18) et qui est capable de verser une quantité ou dose dudit agent provenant de la chambre de dosage (43) dans ladite chambre de distribution (18) lorsque le dispositif de distribution (1) se déplace de la position de repos à la position de fonctionnement.
  4. Dispositif selon les revendications 2 et 3, dans lequel la chambre de distribution (18) est prévue dans le corps (3) de façon adjacente audit espace (9) et le bec verseur (44) de l'élément cassette (30) fait saillie à partir d'un côté de celui-ci qui est situé de façon opérationnelle et de façon adjacente à ladite chambre de distribution (18).
  5. Dispositif selon la revendication 2, dans lequel ledit élément cassette (30) comporte un évidement (51) dans sa paroi (31) qui, dans la position de repos, se trouve de façon adjacente à la paroi inférieure (10) dudit espace (9) dans le corps (3) ; ledit évidement (51) étant capable de piéger une quantité d'air au cours d'une opération de remplissage avec l'agent liquide dans ledit espace (9) et l'élément cassette (30), ladite quantité d'air étant telle que, lorsque le dispositif de distribution (1) est remis dans la position de fonctionnement après l'opération de remplissage, l'agent de rinçage présent dans ledit espace (9) atteint un niveau qui est inférieur ou au plus égal à un niveau prédéterminé.
  6. Dispositif selon la revendication 2, dans lequel l'ouverture (16) pour insérer l'élément cassette (30) dans l'espace (9) dans le corps (3) comporte un rebord saillant (17) qui est capable d'entrer en prise avec un couvercle mobile (7) prévu par des moyens de fermeture étanches (25) agissant conjointement audit rebord (17).
  7. Dispositif selon la revendication 6, dans lequel des moyens de support et de guidage (17a) capables de guider le mouvement de l'élément cassette (30) dans ledit espace (9) et supporter l'élément cassette (30) lors de l'utilisation sont prévus le long d'au moins un côté dudit rebord (17).
  8. Dispositif selon une quelconque des revendications précédentes, dans lequel ledit élément cassette (30) peut être situé de façon stable dans une pluralité de positions relatives par rapport audit espace (9), dont chacune correspond à une capacité différente de ladite chambre de distribution (18).
  9. Dispositif selon la revendication 8, dans lequel l'élément cassette (30) est monté dans l'espace (9) de sorte qu'il puisse tourner sur un axe ou un arbre et comporte un appendice antérieur ou une ailette antérieure qui est situé devant une paroi frontale antérieure (15a) du corps (3), ledit appendice ou ladite ailette de l'élément cassette (30) étant pourvu de moyens de retenue capables d'agir conjointement à des moyens d'arrêt associés prévus dans une paroi frontale du corps (3) de manière telle que ledit élément cassette puisse être immobilisé dans l'espace (9) dans une pluralité de positions angulaires différentes, ledit élément cassette (30) possédant une formation saillante qui est capable de s'étendre dans la chambre de distribution (18) selon une quantité différente selon la position angulaire, dans lequel l'élément cassette (30) est immobilisé dans l'espace (9), variant en conséquence le volume de ladite chambre de distribution (18) qui peut être occupé par l'agent de rinçage, et variante de façon correspondante la quantité ou dose distribuable.
  10. Dispositif selon une quelconque des revendications précédentes, dans lequel ledit corps creux (3) est fabriqué sous forme monobloc de matière plastique moulée.
EP05759062A 2004-07-15 2005-07-11 Procede de distribution dosee d'un agent liquide, notamment pour un lave-vaisselle Not-in-force EP1796526B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05759062T PL1796526T3 (pl) 2004-07-15 2005-07-11 Urządzenie do dozowanego podawania płynnego środka, zwłaszcza do zmywarki do naczyń

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000496A ITTO20040496A1 (it) 2004-07-15 2004-07-15 Dispositivo per l'erogazione dosata di un agente liquido, particolarmente per una macchina lavastoviglie.
PCT/IB2005/052286 WO2006008692A1 (fr) 2004-07-15 2005-07-11 Procede de distribution dosee d'un agent liquide, notamment pour un lave-vaisselle

Publications (2)

Publication Number Publication Date
EP1796526A1 EP1796526A1 (fr) 2007-06-20
EP1796526B1 true EP1796526B1 (fr) 2011-01-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05759062A Not-in-force EP1796526B1 (fr) 2004-07-15 2005-07-11 Procede de distribution dosee d'un agent liquide, notamment pour un lave-vaisselle

Country Status (7)

Country Link
EP (1) EP1796526B1 (fr)
AT (1) ATE495695T1 (fr)
DE (1) DE602005026028D1 (fr)
ES (1) ES2360121T3 (fr)
IT (1) ITTO20040496A1 (fr)
PL (1) PL1796526T3 (fr)
WO (1) WO2006008692A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1628593A1 (de) * 1966-04-09 1972-05-18 Philips Nv Dosiervorrichtung zur automatischen Zugabe von fluessigen Spuel- oder Reinigungsmitteln bei Geschirrspuelmaschinen od.dgl.
DE3903636C2 (de) * 1989-02-08 1997-06-19 Miele & Cie Geschirrspülmaschine mit einer automatischen Dosiervorrichtung für Flüssigreiniger
IT1320326B1 (it) * 2000-05-22 2003-11-26 Eltek Spa Dispensatore di agenti di lavaggio per una macchina di lavaggiodomestica, in particolare una lavastoviglie.

Also Published As

Publication number Publication date
PL1796526T3 (pl) 2011-06-30
DE602005026028D1 (de) 2011-03-03
WO2006008692A1 (fr) 2006-01-26
EP1796526A1 (fr) 2007-06-20
ITTO20040496A1 (it) 2004-10-15
ATE495695T1 (de) 2011-02-15
ES2360121T3 (es) 2011-06-01

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