EP0524101A1 - Dishwasher with horizontally turning spray-arm with two stable positions in vertical direction - Google Patents

Dishwasher with horizontally turning spray-arm with two stable positions in vertical direction Download PDF

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Publication number
EP0524101A1
EP0524101A1 EP92402062A EP92402062A EP0524101A1 EP 0524101 A1 EP0524101 A1 EP 0524101A1 EP 92402062 A EP92402062 A EP 92402062A EP 92402062 A EP92402062 A EP 92402062A EP 0524101 A1 EP0524101 A1 EP 0524101A1
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EP
European Patent Office
Prior art keywords
hollow shaft
arm
stable positions
liquid
hand
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Granted
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EP92402062A
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German (de)
French (fr)
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EP0524101B1 (en
Inventor
Emile Delavaud
Benoit Gailledrat
Gilles Ouvrard
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Esswein SA
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Esswein SA
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    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays

Definitions

  • the present invention relates to a dishwasher with a rotating horizontal spray arm with two stable positions in the vertical direction.
  • the horizontal spray arms In a known dishwasher, the horizontal spray arms usually occupy a single position in the vertical direction during operation and rest.
  • the present invention makes it possible to produce a dishwasher having at least one horizontal rotating lower spray arm which occupies in the vertical direction two stable positions, that of operation and that of rest.
  • a dishwasher provided with a horizontal rotating spraying arm is characterized in that at least one lower rotating horizontal spraying arm is movable along its vertical axis of rotation in two stable positions.
  • a dishwasher 1 illustrated schematically and partially in Figure 1 comprises a tank 2, a lower dish basket 3, an upper dish basket 4, a horizontal rotating lower spray arm 6, a horizontal rotating upper spray arm 7, a liquid recycling pump 10, a drain pump 11, a bodywork 15 and a front door 16.
  • the recycling pump 10 sucks liquid into the tank 2 through an inlet pipe 18 and discharges it on the one hand through a first outlet pipe 20 in the lower rotating arm d sprinkling 6 and on the other hand through a second outlet pipe 21 in the upper rotating sprinkler arm 7.
  • a dishwasher provided with a rotating horizontal spraying arm comprises at least one lower rotating spraying arm, movable along its vertical axis of rotation in two stable positions.
  • the horizontal rotating spray arm with two stable positions is vertically displaceable either in a high stable position or in the spray and sealing position of its supply liquid circuit, by means of a flow of liquid sent, during its supply, by a recycling pump, either in a stable low position or rest and / or self-positioning position by means of its own weight in the absence of a current of liquid sent by the recycling pump during an interruption of its liquid supply.
  • the horizontal lower rotating spraying arm 6 can be moved vertically along its axis of rotation 23, either in a stable high position shown in solid lines or in a stable low position shown in broken lines.
  • the horizontal rotating lower spray arm 6 comprises, perpendicular to its center, a hollow shaft 24 provided at its free end with a flange 25 serving as a stop for multiple purposes, that is to say both as a seal stop and bearing and rest stop and / or self-positioning.
  • the hollow shaft 24 of the lower rotating sprinkler arm 6 is mounted on the one hand free to rotate about its vertical axis 23 in an open upper end neck 27 of a stepped tubular support 28 and axially aligned with a terminal nozzle 29 of the outlet pipe 20 of the recycling pump 10, also mounted inside this stepped tubular support 28, coaxial and spaced from this hollow shaft 24, and on the other hand sliding axially in this terminal neck 27 of this support stepped tubular 28 between two limits, the upper limit of which is defined by a meeting between the upper face of the flange 25 and a shoulder 30 of the stepped tubular support 28 and the lower limit is defined by a meeting between the underside of this flange 25 and the end 31 of the nozzle 29 of the pipe 20.
  • the hollow shaft 24 comprises a bore having in its central zone a constriction 32 resulting from a diverging convergent shape which allows a stream of liquid sent by the recycling pump 10 and represented by arrows 33 to exert a strong axial thrust on the shaft 24 and to slide it with the horizontal spraying arm 6 from their stable low position or rest position shown in broken lines towards their stable high position or position d sprinkling and sealing their feed liquid circuit shown in solid lines where the flange 25 abuts against the shoulder 30 of the stepped tubular support 28 and simultaneously stops the sliding of the shaft 24 in the end neck 27.
  • the liquid stream 33 After passing through the hollow shaft 24, the liquid stream 33 enters the spray arm 6, then exits through holes 37 to water the dishes in the basket 3 and simultaneously rotate the spray arm 6 and its hollow shaft 24 around their axis 23 in a bearing constituted by the end neck 27 of the stepped tubular support 28.
  • the flange 25 comprises on its underside a pair of diametrically aligned radial ribs 39, and the end 31 of the terminal nozzle 29 of the pipe 20 is provided with a diametrically aligned radial groove 40 intended to receive these ribs 39.
  • these are horizontally slidable mounted from back to front and vice versa in order to remove them partially or completely from the tank 2 through the front opening of the dishwasher 1 or to bring them into this tank 2.
  • Outlet stroke limitation stops are usually mounted on the rear side of these dish baskets 3 and 4 to avoid the risk of an involuntary and untimely total removal of these baskets.
  • stops for limiting the outlet stroke 42 are formed projecting downwards on the rear part of the lower basket for the dishes 3.
  • the operation for removing the basket 3 will be hampered if the lower horizontal spray arm 6 comes to rest across the path of the stops 42, because this spray arm 6 hooks them to the passage.
  • a choice of the location of the radial grooves 40 in the end 31 of the terminal nozzle 29 which receive the radial ribs 39 of the flange 25 of the shaft 24 makes it possible to orient the spray arm 6 at rest in one direction from front to back or vice versa and consequently to avoid its catching with the limit stops for the outlet stroke 42 of the lower basket for dishes 3 during a partial or total removal of this latest.
  • the radial ribs 39 thus cooperate with the radial grooves 40 of the end 31 of the nozzle 29 and allow the flange 25 to play its role of self-positioning stop of the spray arm 6 putting itself in an orientation which facilitates removal partial or total of the lower dish basket 3 fitted with limit stops for outlet stroke 42.
  • the hollow shaft 24 comprises in the central zone of its bore a thrust disc or concentric transverse thrust plate securely held in position by spaced radial arms attached to the internal wall of the shaft 24 , defining on the periphery of this disc or this thrust plate, passage openings for liquid.
  • This plate or this thrust disc in the bore of the hollow shaft 24 plays the same role as that of the throttle 32 and allows a stream of liquid 33 sent by the recycling pump 10 to move the hollow shaft axially.
  • the end 31 of the terminal nozzle 29 is provided with a pair of diametrically aligned radial ribs similar to the ribs 39 of the example in FIG. 2 while the underside of the flange 25 is provided with a pair of diametrically aligned radial grooves for receiving these radial ribs of the nozzle 29.

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  • Washing And Drying Of Tableware (AREA)

Abstract

Dishwasher fitted with a rotating horizontal spraying arm, characterised in that at least one lower rotating horizontal spraying arm (6) can be moved along its vertical rotation axis (23) into two stable positions. <IMAGE>

Description

La présente invention concerne un lave-vaisselle à bras horizontal tournant d'arrosage à deux positions stables dans le sens vertical.The present invention relates to a dishwasher with a rotating horizontal spray arm with two stable positions in the vertical direction.

Dans un lave-vaisselle connu, les bras horizontaux tournant d'arrosage occupent habituellement dans le sens vertical une seule position durant leur fonctionnement et leur repos.In a known dishwasher, the horizontal spray arms usually occupy a single position in the vertical direction during operation and rest.

La présente invention permet de réaliser un lave-vaisselle ayant au moins un bras horizontal tournant inférieur d'arrosage qui occupe dans le sens vertical deux positions stables, celle de fonctionnement et celle de repos.The present invention makes it possible to produce a dishwasher having at least one horizontal rotating lower spray arm which occupies in the vertical direction two stable positions, that of operation and that of rest.

Selon l'invention, un lave-vaisselle muni de bras horizontal tournant d'arrosage est caractérisé en ce qu'au moins un bras horizontal tournant inférieur d'arrosage est déplaçable le long de son axe vertical de rotation dans deux positions stables.According to the invention, a dishwasher provided with a horizontal rotating spraying arm is characterized in that at least one lower rotating horizontal spraying arm is movable along its vertical axis of rotation in two stable positions.

Pour mieux faire comprendre l'invention, on en décrit ci-après un exemple de réalisation illustré par des dessins ci-annexés dont :

  • la figure 1 représente une vue schématique partielle en coupe verticale d'un lave-vaisselle ayant un bras horizontal tournant inférieur d'arrosage à deux positions stables dans le sens vertical, et
  • la figure 2 représente à une autre échelle une vue schématique partielle en coupe verticale du bras horizontal tournant inférieur d'arrosage de la figure 1 montrant ce bras dans sa position de fonctionnement.
To better understand the invention, an embodiment is illustrated below, illustrated by the attached drawings, in which:
  • FIG. 1 represents a partial schematic view in vertical section of a dishwasher having a horizontal rotating lower spray arm with two stable positions in the vertical direction, and
  • 2 shows on another scale a partial schematic view in vertical section of the lower rotating horizontal spraying arm of FIG. 1 showing this arm in its operating position.

Un lave-vaisselle 1 illustré schématiquemenet et partiellement dans la figure 1 comprend une cuve 2 , un panier à vaisselle inférieur 3, un panier à vaisselle supérieur 4, un bras horizontal tournant inférieur d'arrosage 6, un bras horizontal tournant supérieur d'arrosage 7, une pompe de recyclage de liquide 10, une pompe de vidange 11, une carrosserie 15 et une porte frontale 16.A dishwasher 1 illustrated schematically and partially in Figure 1 comprises a tank 2, a lower dish basket 3, an upper dish basket 4, a horizontal rotating lower spray arm 6, a horizontal rotating upper spray arm 7, a liquid recycling pump 10, a drain pump 11, a bodywork 15 and a front door 16.

Durant le fonctionnement du lave-vaisselle 1, la pompe de recyclage 10 aspire du liquide dans la cuve 2 à travers une canalisation d'entrée 18 et le refoule d'une part à travers une première canalisation de sortie 20 dans le bras tournant inférieur d'arrosage 6 et d'autre part à travers une deuxième canalisation de sortie 21 dans le bras tournant supérieur d'arrosage 7.During the operation of the dishwasher 1, the recycling pump 10 sucks liquid into the tank 2 through an inlet pipe 18 and discharges it on the one hand through a first outlet pipe 20 in the lower rotating arm d sprinkling 6 and on the other hand through a second outlet pipe 21 in the upper rotating sprinkler arm 7.

Selon l'invention, un lave-vaisselle muni de bras horizontal tournant d'arrosage comprend au moins un bras tournant inférieur d'arrosage, déplaçable le long de son axe vertical de rotation dans deux positions stables. Le bras horizontal tournant d'arrosage à deux positions stables est verticalement déplaçable soit dans une position haute stable ou position d'arrosage et d'étanchéité de son circuit de liquide d'alimentation, au moyen d'un courant de liquide envoyé, lors de son alimentation, par une pompe de recyclage, soit dans une position basse stable ou position de repos et/ou d'autopositionnement au moyen de son propre poids en absence d'un courant de liquide envoyé par la pompe de recyclage lors d'une interruption de son alimentation en liquide.According to the invention, a dishwasher provided with a rotating horizontal spraying arm comprises at least one lower rotating spraying arm, movable along its vertical axis of rotation in two stable positions. The horizontal rotating spray arm with two stable positions is vertically displaceable either in a high stable position or in the spray and sealing position of its supply liquid circuit, by means of a flow of liquid sent, during its supply, by a recycling pump, either in a stable low position or rest and / or self-positioning position by means of its own weight in the absence of a current of liquid sent by the recycling pump during an interruption of its liquid supply.

Dans l'exemple schématiquement et partiellement illustré dans la figure 2, le bras horizontal tournant inférieur d'arrosage 6 est déplaçable verticalement le long de son axe de rotation 23, soit dans une position haute stable représentée en traits continus soit dans une position basse stable représentée en traits discontinus.In the example schematically and partially illustrated in FIG. 2, the horizontal lower rotating spraying arm 6 can be moved vertically along its axis of rotation 23, either in a stable high position shown in solid lines or in a stable low position shown in broken lines.

Le bras horizontal tournant inférieur d'arrosage 6 comprend perpendiculairement à son centre un arbre creux 24 muni à son extrémité libre, d'une collerette 25 servant de butée à destinée multiple c'est-à-dire à la fois de butée d'étanchéité et de palier et de butée de repos et/ou d'autopositionnement. L'arbre creux 24 du bras tournant inférieur d'arrosage 6 est monté d'une part libre en rotation autour de son axe vertical 23 dans un col terminal supérieur ouvert 27 d'un support tubulaire étagé 28 et axialement aligné avec une buse terminale 29 de la canalisation de sortie 20 de la pompe de recyclage 10, également montée à l'intérieur de ce support tubulaire étagé 28, coaxiale et espacée de cet arbre creux 24, et d'autre part coulissant axialement dans ce col terminal 27 de ce support tubulaire étagé 28 entre deux limites dont la limite supérieure est définie par une rencontre entre la face supérieure de la collerette 25 et un épaulement 30 du support tubulaire étagé 28 et la limite inférieure est définie par une rencontre entre la face inférieure de cette collerette 25 et l'extrémité 31 de la buse 29 de la canalisation 20.The horizontal rotating lower spray arm 6 comprises, perpendicular to its center, a hollow shaft 24 provided at its free end with a flange 25 serving as a stop for multiple purposes, that is to say both as a seal stop and bearing and rest stop and / or self-positioning. The hollow shaft 24 of the lower rotating sprinkler arm 6 is mounted on the one hand free to rotate about its vertical axis 23 in an open upper end neck 27 of a stepped tubular support 28 and axially aligned with a terminal nozzle 29 of the outlet pipe 20 of the recycling pump 10, also mounted inside this stepped tubular support 28, coaxial and spaced from this hollow shaft 24, and on the other hand sliding axially in this terminal neck 27 of this support stepped tubular 28 between two limits, the upper limit of which is defined by a meeting between the upper face of the flange 25 and a shoulder 30 of the stepped tubular support 28 and the lower limit is defined by a meeting between the underside of this flange 25 and the end 31 of the nozzle 29 of the pipe 20.

Dans l'exemple illustré à la figure 2, l'arbre creux 24 comprend un alèsage présentant dans sa zone centrale un étranglement 32 résultant d'une forme convergente divergente qui permet à un courant de liquide envoyé par la pompe de récyclage 10 et représenté par des flèches 33 d'exercer une forte poussée axiale sur l'arbre 24 et de la faire coulisser avec le bras horizontal tournant d'arrosage 6 de leur position basse stable ou position de repos représentée en traits discontinus vers leur position haute stable ou position d'arrosage et d'étanchéité de leur circuit de liquide d'alimentation représentée en traits pleins où la collerette 25 bute contre l'épaulement 30 du support tubulaire étagé 28 et simultanément met fin au coulissement de l'arbre 24 dans le col terminal 27.In the example illustrated in FIG. 2, the hollow shaft 24 comprises a bore having in its central zone a constriction 32 resulting from a diverging convergent shape which allows a stream of liquid sent by the recycling pump 10 and represented by arrows 33 to exert a strong axial thrust on the shaft 24 and to slide it with the horizontal spraying arm 6 from their stable low position or rest position shown in broken lines towards their stable high position or position d sprinkling and sealing their feed liquid circuit shown in solid lines where the flange 25 abuts against the shoulder 30 of the stepped tubular support 28 and simultaneously stops the sliding of the shaft 24 in the end neck 27.

Plus la poussée effectuée par le courant de liquide 33 sur l'arbre 24 est forte, autrement dit plus la force d'application de la collerette 25 contre l'épaulement 30 du support 28 est importante, plus l'étanchéité entre la face supérieure de cette collerette 25 et la surface de cet épaulement 30 du support 28 est grande. Le liquide provenant du courant 33 est retenu dans le support tubulaire étagé 28. Aucune fuite de liquide n'est décelée à l'extrémité ouverte 35 du col terminal 27 de ce support. Le circuit de liquide d'alimentaiton du bras horizontal tournant d'arrosage 6 est ainsi étanche. La collerette 25 de l'arbre 24 joue alors le rôle d'une efficace butée d'étanchéité. Après un passage à travers l'arbre creux 24, le courant de liquide 33 pénètre dans le bras d'arrosage 6, puis sort par des orifices 37 pour arroser la vaisselle dans le panier 3 et faire tourner en même temps le bras d'arrosage 6 et son arbre creux 24 autour de leur axe 23 dans un palier constitué par le col terminal 27 du support tubulaire étagé 28. La collerette 25 appliquée contre l'épaulement 30 sous la poussée du courant de liquide 33 du support 28, empêche l'arbre 24 de coulisser et sert ainsi d'une butée de palier de cet arbre creux 24.The greater the thrust carried by the current of liquid 33 on the shaft 24, in other words the greater the force of application of the flange 25 against the shoulder 30 of the support 28, the more the seal between the upper face of this flange 25 and the surface of this shoulder 30 of the support 28 is large. The liquid coming from stream 33 is retained in the stepped tubular support 28. No liquid leakage is detected at the open end 35 of the end neck 27 of this support. The liquid supply circuit of the horizontal rotating sprinkler arm 6 is thus sealed. The flange 25 of the shaft 24 then plays the role of an effective sealing stop. After passing through the hollow shaft 24, the liquid stream 33 enters the spray arm 6, then exits through holes 37 to water the dishes in the basket 3 and simultaneously rotate the spray arm 6 and its hollow shaft 24 around their axis 23 in a bearing constituted by the end neck 27 of the stepped tubular support 28. The flange 25 applied against the shoulder 30 under the thrust of the stream of liquid 33 of the support 28, prevents the shaft 24 to slide and thus serves as a bearing stop for this hollow shaft 24.

Quand le fonctionnement de la pompe de recyclage 10 est arrêté, le courant de liquide 33 est interrompu et la poussée vers le haut exercée par ce courant de liquide 33 sur l'arbre creux 24 est cessée. Sous l'effet de leurs poids, le bras horizontal tournant inférieur d'arrosage 6 et l'arbre creux 24 descendent en coulissant dans le col terminal 27 du support 28 tout en tournant par inertie, de leur position haute stable jusqu'à leur position basse stable ou position de repos où la collerette 25 bute contre l'extrémité 31 de la buse 29 de la canalisation 20 et simultanément met fin au coulissement de l'arbre 24 et le bras d'arrosage 6. La collerette 25 sert ainsi d'une butée de repos.When the operation of the recycling pump 10 is stopped, the flow of liquid 33 is interrupted and the upward thrust exerted by this flow of liquid 33 on the hollow shaft 24 is stopped. Under the effect of their weights, the lower rotating horizontal spraying arm 6 and the hollow shaft 24 slide down in the end neck 27 of the support 28 while rotating by inertia, from their high stable position to their position. stable low or rest position where the flange 25 abuts against the end 31 of the nozzle 29 of the pipe 20 and simultaneously stops the sliding of the shaft 24 and the spray arm 6. The flange 25 thus serves as a rest stop.

Dans l'exemple illustré, la collerette 25 comprend sur sa face inférieure paire de nervures radiales diamétralement alignées 39, et l'extrémité 31 de la buse terminale 29 de la canalisation 20 est pourvue d'une rainure radiale diamétralement alignée 40 destinée à recevoir ces nervures 39.In the example illustrated, the flange 25 comprises on its underside a pair of diametrically aligned radial ribs 39, and the end 31 of the terminal nozzle 29 of the pipe 20 is provided with a diametrically aligned radial groove 40 intended to receive these ribs 39.

Lors d'une descente de leur position haute à leur position basse ou position de repos, suite à un arrêt de la pompe de recyclage 10 et une interruption du courant de liquide 33, le bras d'arrosage 6 et l'arbre 24 coulissent en tournant dans le col terminal 27 du support 28. Dès que la collerette 25 bute contre l'extrémité 31 de la buse terminale 29, le coulissement axial de l'arbre 24 et des bras d'arrosage 6 est arrêté. Les nervures radiales 39 de la collerette 25, en frottant contre l'extrémité 31 de la buse terminale 29 freinent énergiquement la rotation de l'arbre 24 et du bras d'arrosage 6 et tombent dans les rainures radiales 40 qui immobilisent l'arbre 24 et le bras d'arrosage 6 dans cette position préétablie. La collerette 25 de l'arbre 24 joue ainsi le rôle d'une butée d'autopositionnement de cet arbre 24.During a descent from their high position to their low position or rest position, following a stop of the recycling pump 10 and an interruption of the liquid stream 33, the spray arm 6 and the shaft 24 slide in turning in the terminal neck 27 of the support 28. As soon as the flange 25 abuts against the end 31 of the terminal nozzle 29, the axial sliding of the shaft 24 and of the spray arms 6 is stopped. The radial ribs 39 of the flange 25, by rubbing against the end 31 of the terminal nozzle 29 energetically brake the rotation of the shaft 24 and of the spray arm 6 and fall into the radial grooves 40 which immobilize the shaft 24 and the spray arm 6 in this preset position. The flange 25 of the shaft 24 thus plays the role of a self-positioning stop for this shaft 24.

Dans le lave-vaisselle 1, pour faciliter le chargement et le déchargement en vaisselle des paniers à vaisselle inférieur 3 et supéreiur 4, ceux-ci sont montés coulissables horizontalement d'arrière en avant et inversement afin de les faire sortir partiellement ou totalement de la cuve 2 à travers l'ouverture frontale du lave-vaisselle 1 ou de les faire entrer dans cette cuve 2.In the dishwasher 1, to facilitate loading and unloading the lower 3 and upper 4 dish baskets into dishes, these are horizontally slidable mounted from back to front and vice versa in order to remove them partially or completely from the tank 2 through the front opening of the dishwasher 1 or to bring them into this tank 2.

Des butées de limitation de course de sortie sont habituellement montées sur le côté arrière de ces paniers à vaisselle 3 et 4 pour éviter des risques d'un retrait total involontaire et inopportun de ces paniers.Outlet stroke limitation stops are usually mounted on the rear side of these dish baskets 3 and 4 to avoid the risk of an involuntary and untimely total removal of these baskets.

Dans l'exemple schématiquement illustré à la figure 1, des butées de limitation de course de sortie 42 sont formées en saillie vers le bas sur la partie arrière du panier inférieur à vaisselle 3. L'opération de sortie du panier 3 sera gênée si le bras horizontal inférieur d'arrosage 6 se met au repos en travers du trajet des butées 42, car ce bras d'arrosage 6 les accroche au passage.In the example schematically illustrated in FIG. 1, stops for limiting the outlet stroke 42 are formed projecting downwards on the rear part of the lower basket for the dishes 3. The operation for removing the basket 3 will be hampered if the lower horizontal spray arm 6 comes to rest across the path of the stops 42, because this spray arm 6 hooks them to the passage.

Un choix de l'emplacement des rainures radiales 40 dans l'extrémité 31 de la buse terminale 29 qui reçoivent les nervures radiales 39 de la collerette 25 de l'arbre 24 permet d'orienter le bras d'arrosage 6 au repos dans un sens d'avant en arrière ou inversement et d'éviter par conséquent son accrochage avec les butées de limitation de course de sortie 42 du panier inférieur à vaisselle 3 lors d'un retrait partiel ou total de ce dernier.A choice of the location of the radial grooves 40 in the end 31 of the terminal nozzle 29 which receive the radial ribs 39 of the flange 25 of the shaft 24 makes it possible to orient the spray arm 6 at rest in one direction from front to back or vice versa and consequently to avoid its catching with the limit stops for the outlet stroke 42 of the lower basket for dishes 3 during a partial or total removal of this latest.

Les nervures radiales 39 coopèrent ainsi avec les rainures radiales 40 de l'extrémité 31 de la buse 29 et permettent à la collerette 25 de jouer son rôle de butée d'autopositionnement du bras d'arrosage 6 se mettant dans une orientation qui facilite un retrait partiel ou total du panier inférieur à vaisselle 3 muni de butées de limitation de course de sortie 42.The radial ribs 39 thus cooperate with the radial grooves 40 of the end 31 of the nozzle 29 and allow the flange 25 to play its role of self-positioning stop of the spray arm 6 putting itself in an orientation which facilitates removal partial or total of the lower dish basket 3 fitted with limit stops for outlet stroke 42.

Dans une variante de réalisation non représentée, l'arbre creux 24 comprend dans la zone centrale de son alésage un disque de poussée ou plaquette transversale concentrique de poussée solidement maintenu en position par des bras radiaux espacés attachés à la paroi interne de l'arbre 24, définissant sur le pourtour de ce disque ou cette plaquette de poussée, des ouvertures de passage pour liquide.In an alternative embodiment not shown, the hollow shaft 24 comprises in the central zone of its bore a thrust disc or concentric transverse thrust plate securely held in position by spaced radial arms attached to the internal wall of the shaft 24 , defining on the periphery of this disc or this thrust plate, passage openings for liquid.

Cette plaquette ou ce disque de poussée dans l'alèsage de l'arbre creux 24 joue le même rôle que celui de l'étranglement 32 et permet à un courant de liquide 33 envoyé par la pompe de recyclage 10 de déplacer axialement l'arbre creux 24 dans le col terminal 27 du support tubulaire étagé 28, de le faire coulisser avec le bras horizontal tournant d'arrosage 6 de leur position basse stable ou position de repos, représentée dans la figure 2 par des traits discontinus, dans leur position haute stable ou position d'arrosage et d'étanchéité de leur circuit de liquide d'alimentation représentée en traits pleins où la collerette 25 fortement appliquée contre l'épaulement 30 du support tubulaire étagé 28 par la poussée exercée par ce courant de liquide 33 assure cette étanchéité de ce circuit de liquide d'alimentation.This plate or this thrust disc in the bore of the hollow shaft 24 plays the same role as that of the throttle 32 and allows a stream of liquid 33 sent by the recycling pump 10 to move the hollow shaft axially. 24 in the end neck 27 of the stepped tubular support 28, to slide it with the horizontal spraying arm 6 from their stable low position or rest position, represented in FIG. 2 by broken lines, in their stable high position or watering and sealing position of their supply liquid circuit shown in solid lines where the flange 25 strongly applied against the shoulder 30 of the stepped tubular support 28 by the thrust exerted by this current of liquid 33 ensures this sealing of this feed liquid circuit.

Dans une autre variante de réalisation non représentée, l'extrémité 31 de la buse terminale 29 est pourvue d'une paire de nervures radiales diamétralement alignées analogues aux nervures 39 de l'exemple de la figure 2 tandis que la face inférieure de la collerette 25 est munie d'une paire de rainures radiales diamétralement alignées de réception de ces nervures radiales de la buse 29.In another alternative embodiment not shown, the end 31 of the terminal nozzle 29 is provided with a pair of diametrically aligned radial ribs similar to the ribs 39 of the example in FIG. 2 while the underside of the flange 25 is provided with a pair of diametrically aligned radial grooves for receiving these radial ribs of the nozzle 29.

Claims (6)

Lave-vaisselle muni de bras horizontal tournant d'arrosage, comportant au moins un bras horizontal tournant inférieur d'arrosage (6) déplaçable le long de son axe vertical de rotation (23) dans deux positions stables, caractérisé en ce que le bras tournant d'arrosage à deux positions stables (6) est verticalement déplaçable, soit dans une position haute stable ou position d'arrosage et d'étanchéité de son circuit de liquide d'alimentation au moyen d'un courant de liquide (33) envoyé lors de son alimentation par une pompe de recyclage (10), soit dans une position basse stable ou position de repos et/ou d'autopositionnement au moyen de son propre poids en absence d'un courant de liquide (33) envoyé par cette pompe de recyclage lors d'une interruption de son alimentation en liquide.Dishwasher provided with horizontal rotating spraying arm, comprising at least one horizontal rotating lower spraying arm (6) movable along its vertical axis of rotation (23) in two stable positions, characterized in that the rotating arm with two stable positions (6) is vertically movable, either in a high stable position or a position for watering and sealing its supply liquid circuit by means of a liquid stream (33) sent during of its supply by a recycling pump (10), either in a stable low position or rest and / or self-positioning position by means of its own weight in the absence of a stream of liquid (33) sent by this pump. recycling during an interruption of its liquid supply. Lave-vaisselle selon la revendication 1, caractérisé en ce que le bras horizontal tournant d'arrosage à deux positions stables (6) comprend à son centre un arbre creux (24) monté coulissant axialement et libre en rotation dans un col terminal (27) d'un support tubulaire étagé (28) et muni d'une part à son extrémité libre, d'une collerette (25) servant de butée à destinée multiple dans une coopération par sa face supérieure avec un épaulement (30) du support tubulaire étagé (28) et par sa face inférieure avec une extrémité libre (31) d'une buse terminale (29) d'une canalisation d'alimentation en liquide (20) montée à l'intérieur de ce support tubulaire étagé (28) coaxiale et espacée de cet arbre creux (24) et reliée à la sortie d'une pompe de recyclage (10) et d'autre part dans la zone centrale de son alésage, d'un étranglement (32) résultant d'une forme convergente-divergente.Dishwasher according to claim 1, characterized in that the horizontal rotating spraying arm with two stable positions (6) comprises at its center a hollow shaft (24) mounted to slide axially and free to rotate in a terminal neck (27) of a stepped tubular support (28) and provided on the one hand at its free end, with a flange (25) serving as a stop intended for multiple purposes in cooperation by its upper face with a shoulder (30) of the stepped tubular support (28) and by its underside with a free end (31) of a terminal nozzle (29) of a liquid supply pipe (20) mounted inside this coaxial stepped tubular support (28) and spaced from this hollow shaft (24) and connected to the outlet of a recycling pump (10) and on the other hand in the central zone of its bore, of a constriction (32) resulting from a convergent-diverging shape . Lave-vaisselle selon la revendication 1, caractérisé en ce que le bras horizontal tournant d'arrosage à deux positions stables (6) comprend à son centre un arbre creux (24) monté coulissant axialement et libre en rotation dans un col terminal (27) d'un support tubulaire étagé (28) et muni d'une part à son extrémité libre d'une collerette (25) servant de butée à destinée multiple dans une coopération par sa face supérieure avec un épaulement (30) du support tubulaire étagé (28) et par sa face inférieure avec une extrémité libre (31) d'une buse terminale (29) d'une canalisation d'alimentation en liquide (20) montée à l'intérieur de ce support tubulaire étagé (28) coaxiale et espacée de cet arbre creux (24) et reliée à la sortie d'une pompe de recyclage (10) et d'autre part dans une zone centrale de son alèsage, d'une plaquette transversale concentrique ou disque de poussée maintenue par des bras radiaux espacés attachés à la paroi interne de l'arbre creux (24) définissant sur le pourtour de cette plaquette ou disque de poussée des ouvertures de passage pour liquide.Dishwasher according to claim 1, characterized in that the horizontal rotating spraying arm with two stable positions (6) comprises at its center a hollow shaft (24) mounted to slide axially and free to rotate in a terminal neck (27) a stepped tubular support (28) and provided on the one hand at its free end with a flange (25) serving as a stop intended for multiple purposes in a cooperation by its upper face with a shoulder (30) of the stepped tubular support ( 28) and by its face lower with a free end (31) of a terminal nozzle (29) of a liquid supply pipe (20) mounted inside this stepped tubular support (28) coaxial and spaced from this hollow shaft (24 ) and connected to the outlet of a recycling pump (10) and on the other hand in a central zone of its bore, of a concentric transverse plate or thrust disc held by spaced radial arms attached to the internal wall of the hollow shaft (24) defining around the periphery of this plate or thrust disc passage openings for liquid. Lave-vaisselle selon l'une des revendications 2 et 3, caractérisé en ce que la collerette (25) de l'arbre creux (24) du bras tournant d'arrosage à deux positions stables (6) sert à la fois de butée de palier et d'étanchéité et de butée de repos et/ou d'autopositionnement.Dishwasher according to one of claims 2 and 3, characterized in that the collar (25) of the hollow shaft (24) of the rotating spray arm with two stable positions (6) serves both as a stop for bearing and sealing and rest and / or self-positioning stop. Lave-vaisselle selon l'une des revendications 2 et 3, caractérisé en ce qu'il comprend d'une part dans la face inférieure de la collerette (25) de l'arbre creux (24) du bras tournant d'arrosage à deux positions stables (6) une paire de nervures radiales (39) diamétralement alignées et d'autre part dans l'extrémité (31 ) de la buse terminale (29) de la canalisation d'alimentation en liquide (20) une paire de rainures radiales diamétralement alignées (40) de réception de ces nervures radiales (39).Dishwasher according to one of claims 2 and 3, characterized in that it comprises on the one hand in the underside of the flange (25) of the hollow shaft (24) of the rotating spray arm with two stable positions (6) a pair of diametrically aligned radial ribs (39) and on the other hand in the end (31) of the terminal nozzle (29) of the liquid supply pipe (20) a pair of radial grooves diametrically aligned (40) for receiving these radial ribs (39). Lave-vaisselle selon l'une des revendications 2 et 3, caractérisé en ce qu'il comprend d'une part dans l'extrémité (31) de la buse terminale (29) une paire de nervures radiales diamétralement alignées, et d'autre part dans la face inférieure de la collerette (25) de l'arbre creux (24) une paire de rainures radiales diamétralement alignées de réception de ces nervures radiales de la buse (29).Dishwasher according to one of claims 2 and 3, characterized in that it comprises on the one hand in the end (31) of the terminal nozzle (29) a pair of diametrically aligned radial ribs, and on the other share in the underside of the collar (25) of the hollow shaft (24) a pair of diametrically aligned radial grooves for receiving these radial ribs of the nozzle (29).
EP19920402062 1991-07-16 1992-07-16 Dishwasher with horizontally turning spray-arm with two stable positions in vertical direction Expired - Lifetime EP0524101B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108951 1991-07-16
FR9108951A FR2679120B1 (en) 1991-07-16 1991-07-16 DISHWASHER WITH HORIZONTAL ARM ROTATING WATERING IN TWO STABLE POSITIONS IN THE VERTICAL DIRECTION.

Publications (2)

Publication Number Publication Date
EP0524101A1 true EP0524101A1 (en) 1993-01-20
EP0524101B1 EP0524101B1 (en) 1995-06-07

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Application Number Title Priority Date Filing Date
EP19920402062 Expired - Lifetime EP0524101B1 (en) 1991-07-16 1992-07-16 Dishwasher with horizontally turning spray-arm with two stable positions in vertical direction

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EP (1) EP0524101B1 (en)
DE (1) DE69202829T2 (en)
ES (1) ES2073257T3 (en)
FR (1) FR2679120B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120111380A1 (en) * 2009-07-28 2012-05-10 Electrolux Home Products Corporation N.V. Spray arm arrangement for a dishwasher
EP3682787A1 (en) * 2018-12-28 2020-07-22 Samsung Electronics Co., Ltd. Dishwasher

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010051200B4 (en) * 2010-11-12 2012-06-06 Belimed Ag Wash arm arrangement for a multi-ply laundry pickup cart

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2236468A1 (en) * 1973-07-10 1975-02-07 Zanussi A Spa Industrie
FR2349261A7 (en) * 1976-04-23 1977-11-18 Bosch Siemens Hausgeraete Dishwasher with spray arm directed toward crockery tray - has throttle sleeve controlling fluid supply according to crockery load
DE3428439A1 (en) * 1984-08-01 1986-02-13 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Spraying-arm bearing in dish-washing machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442779A1 (en) * 1984-11-23 1986-06-05 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Spray device for a domestic dishwasher

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2236468A1 (en) * 1973-07-10 1975-02-07 Zanussi A Spa Industrie
FR2349261A7 (en) * 1976-04-23 1977-11-18 Bosch Siemens Hausgeraete Dishwasher with spray arm directed toward crockery tray - has throttle sleeve controlling fluid supply according to crockery load
DE3428439A1 (en) * 1984-08-01 1986-02-13 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Spraying-arm bearing in dish-washing machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120111380A1 (en) * 2009-07-28 2012-05-10 Electrolux Home Products Corporation N.V. Spray arm arrangement for a dishwasher
US9456730B2 (en) * 2009-07-28 2016-10-04 Electrolux Home Products Corporation N.V. Spray arm arrangement for a dishwasher
EP3682787A1 (en) * 2018-12-28 2020-07-22 Samsung Electronics Co., Ltd. Dishwasher
US11737639B2 (en) 2018-12-28 2023-08-29 Samsung Electronics Co., Ltd. Dishwasher

Also Published As

Publication number Publication date
DE69202829D1 (en) 1995-07-13
ES2073257T3 (en) 1995-08-01
FR2679120A1 (en) 1993-01-22
DE69202829T2 (en) 1995-10-19
EP0524101B1 (en) 1995-06-07
FR2679120B1 (en) 1995-05-24

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