EP0524101B1 - Geschirrspülmaschine mit horizontaldrehendem Sprüharm mit zwei stabilen Positionen in vertikaler Richtung - Google Patents

Geschirrspülmaschine mit horizontaldrehendem Sprüharm mit zwei stabilen Positionen in vertikaler Richtung Download PDF

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Publication number
EP0524101B1
EP0524101B1 EP19920402062 EP92402062A EP0524101B1 EP 0524101 B1 EP0524101 B1 EP 0524101B1 EP 19920402062 EP19920402062 EP 19920402062 EP 92402062 A EP92402062 A EP 92402062A EP 0524101 B1 EP0524101 B1 EP 0524101B1
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EP
European Patent Office
Prior art keywords
hollow shaft
liquid
hand
spray arm
tubular support
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.)
Expired - Lifetime
Application number
EP19920402062
Other languages
English (en)
French (fr)
Other versions
EP0524101A1 (de
Inventor
Emile Delavaud
Benoit Gailledrat
Gilles Ouvrard
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.)
Esswein SA
Original Assignee
Esswein SA
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Filing date
Publication date
Application filed by Esswein SA filed Critical Esswein SA
Publication of EP0524101A1 publication Critical patent/EP0524101A1/de
Application granted granted Critical
Publication of EP0524101B1 publication Critical patent/EP0524101B1/de
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
    • A47L15/14—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 horizontal arm rotating watering in two positions in the vertical direction.
  • a dishwasher is described in document DE-A-3428439.
  • a dishwasher provided with a horizontal rotating spray arm which can be moved along its vertical axis of rotation is characterized in that the horizontal rotating arm can be moved along its vertical axis of rotation in a high stable position watering and a stable low rest position
  • 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 sprinkler arm 6, a horizontal rotating upper sprinkler 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 in 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 sprinkler 6 and on the other hand through a second outlet pipe 21 in the upper rotating sprinkler arm 7.
  • the horizontal rotating spray arm with two stable positions is vertically movable 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 lower rotating horizontal 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 spraying 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 supply 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.
  • 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 dishes 3.
  • the operation for removing the basket 3 will be hampered if the lower horizontal spray arm 6 goes 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 stops for limiting 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 basket for dishes 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 firmly 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.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (6)

  1. Geschirrspüler mit waagrechten drehbaren Sprüharmen, der mindestens einen unteren waagrechten drehbaren Sprüharm (6) aufweist, welcher entlang seiner vertikalen Drehachse in zwei Stellungen verschiebbar ist, dadurch gekennzeichnet, daß der drehbare Sprüharm (6) vertikal zwischen zwei Stellungen verschiebbar ist, nämlich einer oberen stabilen Stellung oder Sprühstellung mit Hilfe einer Flüssigkeitsströmung (33) aufgrund des Betriebs der Umwälzpumpe (10), in der die Flüssigkeitsspeiseleitung abgedichtet ist und einer stabilen unteren Stellung, oder Ruhestellung und/oder Selbstpositionierstellung aufgrund des Eigengewichts, wenn von der Umwälzpumpe während einer Unterbrechung der Versorgung kein Flüssigkeitsstrom (33) mehr geliefert wird.
  2. Geschirrspüler nach Anspruch 1, dadurch gekennzeichnet, daß der waagrechte drehbare Sprüharm mit zwei stabilen Stellungen (6) in seinem Zentrum eine hohle Welle (24) aufweist, die axial gleitend und frei drehend in einem Endhals (27) eines gestuften rohrförmigen Trägers (28) gelagert ist und einerseits an ihrem freien Ende einen Kragen (25), der als Mehrzweckanschlag in Zusammenwirken seiner Oberseite mit einer Schulter (30) des gestuften rohrförmigen Trägers (28) und seiner Unterseite mit einem freien Ende (31) einer Enddüse (29) in einer Leitung (20) zur Zufuhr von Flüssigkeit dient, die im Inneren des rohrförmigen gestuften Trägers (28) koaxial und in Abstand von der hohlen Welle (24) montiert sowie an den Ausgang der Umwälzpumpe (10) angeschlossen ist, und andererseits in der zentralen Zone des Hohlraums in der Welle eine Verengung (32) aufgrund einer konvergent-divergenten Form aufweist.
  3. Geschirrspüler nach Anspruch 1, dadurch gekennzeichnet, daß der waagrechte drehbare Sprüharm mit zwei stabilen Stellungen (6) in seinem Zentrum eine hohle Welle (24) aufweist, die axial gleitend und frei drehend in einem Endhals (27) eines gestuften rohrförmigen Trägers (28) gelagert ist und einerseits an ihrem freien Ende einen Kragen (25), der als Mehrzweckanschlag in Zusammenwirken seiner Oberseite mit einer Schulter (30) des gestuften rohrförmigen Trägers (28) und seiner Unterseite mit einem freien Ende (31) einer Enddüse (29) in einer Leitung (20) zur Zufuhr von Flüssigkeit dient, die im Inneren des rohrförmigen gestuften Trägers (28) koaxial und in Abstand von der hohlen Welle (24) montiert sowie an den Ausgang der Umwälzpumpe (10) angeschlossen ist, und andererseits in der zentralen Zone des Hohlraums in der Welle eine konzentrische Querplatte oder Druckscheibe aufweist, die von radialen, an der Innenwand der hohlen Welle (24) in Abstand befestigten radialen Armen gehalten werden, wobei auf dem Umfang dieser Platte oder Druckscheibe Öffnungen zum Durchlaß der Flüssigkeit ausgebildet sind.
  4. Geschirrspüler nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß der Kragen (25) der hohlen Welle (24) des drehbaren Sprüharms mit zwei stabilen Stellungen (6) als Lager, Abdichtung, Ruheanschlag und/oder zur selbständigen Positionierung dient.
  5. Geschirrspüler nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß er einerseits auf der Unterseite des Kragens (25) der hohlen Welle (24) des drehbaren Sprüharms mit zwei stabilen Positionen (6) ein Paar von diametral fluchtenden radialen Rippen (39) und andererseits am Ende (31) der Enddüse (29) der Flüssigkeitsspeiseleitung (20) ein Paar von diametral fluchtenden radialen Rinnen (40) aufweist, in die diese radialen Rippen (39) eindringen.
  6. Geschirrspüler nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß er einerseits am Ende (31) der Enddüse (29) ein Paar von diametral fluchtenden radialen Rippen und andererseits an der Unterseite des Kragens (25) der hohlen Welle (24) ein Paar von diametral fluchtenden radialen Rinnen aufweist, die diese radialen Rippen der Düse (29) aufnehmen.
EP19920402062 1991-07-16 1992-07-16 Geschirrspülmaschine mit horizontaldrehendem Sprüharm mit zwei stabilen Positionen in vertikaler Richtung Expired - Lifetime EP0524101B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108951A FR2679120B1 (fr) 1991-07-16 1991-07-16 Lave-vaisselle a bras horizontal tournant d'arrosage a deux positions stables dans le sens vertical.
FR9108951 1991-07-16

Publications (2)

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

Family

ID=9415156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920402062 Expired - Lifetime EP0524101B1 (de) 1991-07-16 1992-07-16 Geschirrspülmaschine mit horizontaldrehendem Sprüharm mit zwei stabilen Positionen in vertikaler Richtung

Country Status (4)

Country Link
EP (1) EP0524101B1 (de)
DE (1) DE69202829T2 (de)
ES (1) ES2073257T3 (de)
FR (1) FR2679120B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120305037A1 (en) * 2010-11-12 2012-12-06 Samo Petric Spraying arm assembly for a cleaning machine for a multi-rack trolley of a cleaning machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2279687B1 (de) * 2009-07-28 2011-09-21 Electrolux Home Products Corporation N.V. Sprüharmanordnung für Geschirrspüler
EP3682787B1 (de) * 2018-12-28 2023-06-07 Samsung Electronics Co., Ltd. Geschirrspüler
KR102671682B1 (ko) * 2018-12-28 2024-06-04 삼성전자주식회사 식기세척기

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT997436B (it) * 1973-07-10 1975-12-30 Zanussi A Spa Industrie Perfezionamenti nelle macchine lavastoviglie
DE2617845C2 (de) * 1976-04-23 1983-01-27 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Einrichtung zur Steuerung des Sprühdrucks der Spülflüssigkeit einer Geschirrspülmaschine
DE3428439A1 (de) * 1984-08-01 1986-02-13 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Sprueharmlagerung bei geschirrspuelmaschinen
DE3442779A1 (de) * 1984-11-23 1986-06-05 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Spritzvorrichtung fuer eine haushaltgeschirrspuelmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120305037A1 (en) * 2010-11-12 2012-12-06 Samo Petric Spraying arm assembly for a cleaning machine for a multi-rack trolley of a cleaning machine

Also Published As

Publication number Publication date
FR2679120B1 (fr) 1995-05-24
EP0524101A1 (de) 1993-01-20
ES2073257T3 (es) 1995-08-01
DE69202829D1 (de) 1995-07-13
FR2679120A1 (fr) 1993-01-22
DE69202829T2 (de) 1995-10-19

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