DE3732451A1 - Dishwasher with a device for monitoring the rotation of the spray arm - Google Patents

Dishwasher with a device for monitoring the rotation of the spray arm

Info

Publication number
DE3732451A1
DE3732451A1 DE19873732451 DE3732451A DE3732451A1 DE 3732451 A1 DE3732451 A1 DE 3732451A1 DE 19873732451 DE19873732451 DE 19873732451 DE 3732451 A DE3732451 A DE 3732451A DE 3732451 A1 DE3732451 A1 DE 3732451A1
Authority
DE
Germany
Prior art keywords
spray arm
yoke
dishwasher
washing
spray
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.)
Granted
Application number
DE19873732451
Other languages
German (de)
Other versions
DE3732451C2 (en
Inventor
Siegfried Ing Grad Klose
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.)
BSH Hausgeraete GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19873732451 priority Critical patent/DE3732451A1/en
Publication of DE3732451A1 publication Critical patent/DE3732451A1/en
Application granted granted Critical
Publication of DE3732451C2 publication Critical patent/DE3732451C2/de
Granted legal-status Critical Current

Links

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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/24—Spray arms status, e.g. detection of spray arm rotation
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/26—Indication or alarm to the controlling device or to the user
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/32—Stopping or disabling machine operation, including disconnecting the machine from a network, e.g. from an electrical power supply

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

To monitor the rotation of a height-adjustable spray arm, it is proposed that the detector, seated on one wall of the washing container and assigned to the permanent magnet at the end of the spray arm, consists of a magnetically conductive yoke (11, 12) on the wall (10) of the washing container and of a reed switch (13) which is aligned with the yoke centre and arranged on the outside of the washing container, the yoke covering the vertical adjustment region (3) of the spray arm (1), which can be adjusted in height individually or together with the dish rack (4). <IMAGE>

Description

Die Erfindung betrifft eine Geschirrspülmaschine mit wenigstens einem im Spülbe­ hälter drehbar angeordneten sowie wenigstens einem Geschirrkorb zugeordneten und durch den Rückstoß der aus Sprüharmenddüsen austretenden Spülflüssigkeit angetrie­ benen Sprüharm, wobei der Sprüharm an einem Armende einen Dauermagneten trägt und in Höhe der Drehebene des Sprüharmes an der Behälterseitenwand ein Detektor vorgesehen ist, durch den bei blockiertem Sprüharm über eine Impulsauswertung eine Signalvorrichtung betätigbar und der Programmablauf stoppbar ist. The invention relates to a dishwasher with at least one in the dishwasher container rotatably arranged and assigned to at least one crockery basket and driven by the recoil of the rinsing liquid emerging from the spray arm end nozzles benen spray arm, the spray arm carries a permanent magnet at one arm end and at the level of the rotating plane of the spray arm on the container side wall, a detector is provided by a when the spray arm is blocked via a pulse evaluation Signal device can be actuated and the program sequence can be stopped.  

Eine Geschirrspülmaschine mit einer solchen Einrichtung zur Überwachung der Dreh­ bewegung des Sprüharmes ist aus der FR-A-24 42 618 und EP-A-53 231 bekannt. Bewegt sich der Sprüharm mit seinem Dauermagneten an den in der Höhe seiner Drehebene an der Spülbehälterwand sitzenden Detektor vorbei, so läßt ein dem De­ tektor elektrisch nachgeschalteter Vergleicher nur dann eine optische und/oder aku­ stische Signalvorrichtung ansprechen und ein Schaltelement den Stopp der Maschine auslösen, wenn durch einen blockierten Sprüharm die zwischen dem Dauermagneten und dem Detektor erzeugten Impulse ausbleiben. Nach der EP-A-53 231 ist als Im­ pulsauswertung eine Detektorspule in einem Oszillatorkreis, eine Demodulator-, Dif­ ferentiator-, Vergleicher- sowie Ausgangsstufe zu einer Signaleinrichtung oder der Programmsteuerung zum Stoppen des laufenden Geschirrspülprogrammes vorgese­ hen. Die bekannten elektronischen Überwachungseinrichtungen sind für Geschirrspül­ maschinen mit elektronischen Steuereinrichtungen und mit in einer festgelegten Drehebene im Spülbehälter drehbaren Sprüharm geeignet.A dishwasher with such a device for monitoring the rotation Movement of the spray arm is known from FR-A-24 42 618 and EP-A-53 231. The spray arm moves with its permanent magnet at the height of it Rotating plane past the detector tank wall past, so the De tector electrically connected comparator only then an optical and / or aku tical signaling device and a switching element stop the machine trigger if a blocked spray arm between the permanent magnet and no pulses generated to the detector. According to EP-A-53 231 as Im pulse evaluation a detector coil in an oscillator circuit, a demodulator, Dif ferentiator, comparator and output stage to a signaling device or Program control for stopping the running dishwasher program hen. The known electronic monitoring devices are for dishwashing machines with electronic control devices and with in a fixed Swivel arm suitable for rotating level in the wash tank.

Bei den Haushalt-Geschirrspülmaschinen, insbesondere den gebräuchlichen Frontla­ dern, besteht der Wunsch, wenigstens den oberen Geschirrkorb höhenverstellbar im Spülbehälter anzuordnen, damit die lichte Höhe zwischen dem unteren und oberen Geschirrkorb bzw. zwischen dem oberen Geschirrkorb und der Spülbehälterdecke ver­ ändert werden kann und entsprechend die Körbe mit größeren Geschirrteilen zu be­ laden sind (DE-PS 27 32 540). Da jedem Geschirrkorb wenigstens ein Sprüharm zu­ geordnet oder der Sprüharm direkt am Geschirrkorb aufgehängt ist, ergibt sich mit der Höhenverstellung des Korbes auch eine Veränderung der Höhenlage des Sprühar­ mes.For household dishwashers, especially the usual frontla , there is a desire to at least adjust the height of the upper crockery basket Arrange flushing container so that the clear height between the lower and upper Crockery basket or between the upper crockery basket and the washing compartment cover can be changed and accordingly the baskets with larger dishes to be are loading (DE-PS 27 32 540). Since every crockery basket has at least one spray arm orderly or the spray arm is hung directly on the crockery basket the height adjustment of the basket also changes the height of the spray arm mes.

Der Erfindung liegt die Aufgabe zugrunde, eine Geschirrspülmaschine mit einer Ein­ richtung zur Überwachung der Drehbewegung des Sprüharmes zu schaffen, die bei geringem konstruktiven Aufwand eine Höhenverstellung des Sprüharmes ohne negati­ ven Einfluß auf die Überwachungsfunktion erlaubt.The invention has for its object a dishwasher with a direction to monitor the rotational movement of the spray arm to create the low construction effort a height adjustment of the spray arm without negati allow influence on the monitoring function.

Erfindungsgemäß wird diese Aufgabe durch die im Patentanspruch 1 gekennzeichne­ ten Merkmale gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Pa­ tentansprüchen 2 und 3 gekennzeichnet.According to the invention this object is achieved by the features marked in claim 1. Advantageous embodiments of the invention are characterized in claims 2 and 3 .

Während die bekannten Überwachungseinrichtungen wegen der begrenzten Empfind­ lichkeit des Detektors dann nicht mehr funktionsfähig sind, wenn sich die Drehebene des am Sprüharmende sitzenden Dauermagneten gegenüber dem in dieser Ebene fest am Spülbehälter befestigten Sitz des Detektors ändert, kommt die Erfindung mit ei­ nem einzigen, einfachen Reedkontakt bzw. Reedschalter aus. Erfindungsgemäß wird im vertikalen Verstellbereich des Sprüharmes durch das magnetisch leitende Joch der Magnetfluß gebündelt und an den Reedschalter geleitet, wodurch das Schalten des Reedkontaktes in allen möglichen Höhenlagen des Sprüharmes gesichert ist. Die er­ findungsgemäße Lösung zeichnet sich besonders durch einen sehr einfachen und we­ nig störanfälligen Aufbau aus.While the well-known monitoring devices because of the limited sensitivity the detector are no longer functional when the plane of rotation is of the permanent magnet sitting at the end of the spray arm compared to that in this plane changes the seat of the detector attached to the washing container, the invention comes with egg nem single, simple reed contact or reed switch. According to the invention in the vertical adjustment range of the spray arm through the magnetically conductive yoke Magnetic flux bundled and passed to the reed switch, causing the switching of the Reed contact is secured in all possible height positions of the spray arm. Which he Solution according to the invention is particularly characterized by a very simple and we little prone to failure.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigtIn the drawing, an embodiment of the invention is shown. It shows

Fig. 1 in Seitenansicht das einen Dauermagneten tragende Sprüharmende eines höhenverstellbaren Sprüharmes mit dem zugeordneten, vertikalen Spülbehälterwand­ abschnitt, an dem der Reedschalter befestigt ist, Fig. 1 in side view of the one permanent magnet bearing Sprüharmende portion of a height-adjustable spray arm with the associated vertical washing tub wall on which the reed switch is fixed,

Fig. 2 eine Draufsicht zu Fig. 1. FIG. 2 is a top view of FIG. 1.

Die nicht näher gezeichnete Geschirrspülmaschine weist einen Spülbehälter mit ei­ nem darin drehbar angeordneten Sprüharm 1 auf, der durch den Rückstoß der aus Sprüharmenddüsen 2 austretenden Spülflüssigkeit angetrieben wird. Ferner ist der Sprüharm 1 im Höhen-Verstellbereich 3, z.B. über einen vertikalen Höhenbereich von 50 mm, in verschiedenen Höhenlagen einstellbar, was bei einem an einem Geschirr­ korb 4 angelenkten Sprüharm mit der Höhenverstellung des Geschirrkorbes erfolgt. Die mittlere, obere und untere Drehebene 5, 6 bzw. 7 des Sprüharmes sind in Fig. 1 gezeichnet.The dishwasher, not shown, has a washing container with a spray arm 1 rotatably arranged therein, which is driven by the recoil of the washing liquid emerging from spray arm end nozzles 2 . Furthermore, the spray arm 1 in the height adjustment range 3 , for example over a vertical height range of 50 mm, can be set at different heights, which is done with a spray arm articulated on a crockery basket 4 with the height adjustment of the crockery basket. The middle, upper and lower rotational levels 5 , 6 and 7 of the spray arm are shown in Fig. 1.

Wenigstens an einem Ende des Sprüharmes 1 ist in einer Kunststoffhalterung 8 ein Dauermagnet 9 befestigt. Beim Ausführungsbeispiel sind auf der Außenseite der Spülbehälterwand 10 und zwar über den Verstellbereich 3 sich vertikal erstreckende, parallel nebeneinander in geringem Abstand verlaufende, magnetische Eisenblech­ streifen 11, 12 befestigt, die ein Magnetjoch bilden und beim Vorbeibewegen des Dauermagneten 9 des Sprüharmes einen Magnetfluß gebündelt einem auf dem Joch 11, 12 sitzenden Reedschalter 13 zuleiten und das Schalten des Reedkontaktes 14 bewirken.At least at one end of the spray arm 1 , a permanent magnet 9 is fastened in a plastic holder 8 . In the exemplary embodiment, strips of magnetic iron sheet 11 , 12 are attached on the outside of the washing compartment wall 10 , namely over the adjustment area 3, which extend vertically and run parallel and at a short distance parallel to one another, which form a magnetic yoke and bundles a magnetic flux when the permanent magnet 9 of the spray arm moves past Feed reed switch 13 seated on yoke 11 , 12 and switch reed contact 14 .

Dem Reedschalter 13 ist eine an sich bekannte Impulsauswerteeinrichtung nachge­ ordnet, die wegen der unterbrochenen oder gestörten Impulsfolge bei blockiertem Sprüharm eine Signalvorrichtung ansprechen läßt und das laufende Spülprogramm der Geschirrspülmaschine unterbricht.The reed switch 13 is a per se known pulse evaluation device which, due to the interrupted or disturbed pulse sequence when the spray arm is blocked, can trigger a signal device and interrupt the ongoing washing program of the dishwasher.

Die erfindungsgemäße Überwachungseinrichtung ist auch bei Waschmaschinen zur Kontrolle des Wäschebewegers oder bei Wäschetrocknern zur Kontrolle der Wäsche­ trommel verwendbar und kann ferner eine Türverriegelung erst nach Stillstand des den Dauermagneten tragenden, beweglichen Maschinenteils zum Öffnen freigeben.The monitoring device according to the invention is also used in washing machines Check the laundry machine or, in the case of tumble dryers, to check the laundry drum usable and can also only lock the door after the release the permanent magnet-carrying, movable machine part for opening.

Claims (3)

1. Geschirrspülmaschine mit wenigstens einem im Spülbehälter drehbar angeord­ neten sowie wenigstens einem Geschirrkorb zugeordneten und durch den Rück­ stoß der aus Sprüharmenddüsen austretenden Spülflüssigkeit angetriebenen Sprüharm, wobei der Sprüharm an wenigstens einem Armende einen Dauer­ magneten trägt und in Höhe der Drehebene des Sprüharmes an der Spülbehäl­ terwand ein Detektor vorgesehen ist, durch den bei blockiertem Sprüharm über eine Impulsauswertung eine Signalvorrichtung betätigbar und der Pro­ grammablauf stoppbar ist, dadurch gekennzeichnet, daß der De­ tektor aus einem magnetisch leitenden Joch (11, 12) an der Spülbehälterwand (10) und einem zur Jochmitte ausgerichtet, auf der Spülbehälteraußenseite an­ geordneten Reedschalter (13) besteht, wobei das Joch den vertikalen Verstell­ bereich (3) des einzeln oder zusammen mit dem Geschirrkorb (4) höhenver­ stellbaren Sprüharmes (1) übergreift.1. Dishwasher with at least one rotatably arranged in the washing container and at least one crockery basket assigned and driven by the return of the spray arm emerging from spray arm spray arms, the spray arm carrying magnets on at least one arm end and at the level of the level of rotation of the spray arm on the washing container A detector is provided through which a signal device can be actuated when the spray arm is blocked via a pulse evaluation and the program sequence can be stopped, characterized in that the detector consists of a magnetically conductive yoke ( 11 , 12 ) on the washing compartment wall ( 10 ) and one for Aligned center of yoke, on the outside of the washing compartment at ordered reed switches ( 13 ), the yoke overlapping the vertical adjustment area ( 3 ) of the individually or together with the crockery basket ( 4 ) height-adjustable spray arm ( 1 ). 2. Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß auf der Außenseite der Spülbehälterwand (10) zwei sich über den vertikalen Verstell­ bereich (3) des Sprüharmes (1) längserstreckende magnetisierbare Leitbleche, Eisenblechstreifen (11, 12) oder dergleichen nebeneinander in paralleler An­ ordnung befestigt sind und daß mittig auf den Eisenblechstreifen der Reed­ schalter (13) sitzt.2. Dishwasher according to claim 1, characterized in that on the outside of the washing compartment wall ( 10 ) two over the vertical adjustment area ( 3 ) of the spray arm ( 1 ) elongated magnetizable baffles, sheet iron strips ( 11 , 12 ) or the like side by side in parallel order are attached and that the reed switch ( 13 ) sits in the middle of the sheet iron strip. 3. Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Dauermagnet (9) in einer Kunststoffhalterung (8) am Sprüharmende befestigt ist.3. Dishwasher according to claim 1, characterized in that the permanent magnet ( 9 ) in a plastic holder ( 8 ) is attached to the spray arm end.
DE19873732451 1987-09-25 1987-09-25 Dishwasher with a device for monitoring the rotation of the spray arm Granted DE3732451A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873732451 DE3732451A1 (en) 1987-09-25 1987-09-25 Dishwasher with a device for monitoring the rotation of the spray arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873732451 DE3732451A1 (en) 1987-09-25 1987-09-25 Dishwasher with a device for monitoring the rotation of the spray arm

Publications (2)

Publication Number Publication Date
DE3732451A1 true DE3732451A1 (en) 1989-04-20
DE3732451C2 DE3732451C2 (en) 1990-06-28

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DE19873732451 Granted DE3732451A1 (en) 1987-09-25 1987-09-25 Dishwasher with a device for monitoring the rotation of the spray arm

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931031A1 (en) * 1989-09-16 1991-03-28 Miele & Cie Electric dishwashing machine drainage filter unit - has sensor monitoring seating of individual filter for providing warning signal and/or adjusting operating programme
DE4010066A1 (en) * 1990-03-29 1991-10-02 Miele & Cie System for monitoring spray arm rotation of dishwasher - has each spray arm driven by reaction of rinsing liquid leaving spray arm nozzles and sensor detecting rotation
DE4020898A1 (en) * 1990-06-30 1992-01-02 Licentia Gmbh Dishwasher spray arm - has movement sensor to indicate blockage through incorrect loading
EP0534213A1 (en) * 1991-09-26 1993-03-31 ZANUSSI GRANDI IMPIANTI S.p.A. Monitoring arrangement for the washing and rinsing cycles of dishwashing machines
DE4215574A1 (en) * 1992-05-12 1993-11-18 Licentia Gmbh dishwasher
EP0962181A2 (en) * 1998-06-04 1999-12-08 AEG Hausgeräte GmbH Dishwasher with a rotating spray arm
US6761179B2 (en) 1999-09-16 2004-07-13 Bsh Bosch Und Siemens Hausgerate Gmbh Device for monitoring the functioning of a rotating liquid-discharging appliance
EP1743566A2 (en) * 2005-07-15 2007-01-17 Miele &amp; Cie. KG Rinsing machine
DE102005033109A1 (en) * 2005-07-15 2007-01-25 Miele & Cie. Kg Circuit board arrangement e.g. for dishwashing machine sensor, uses hinge elements to joined individual circuit boards to one another
DE102010051218A1 (en) * 2010-11-12 2012-05-16 Belimed Ag Washing arm for a cleaning machine for cleaning medical, pharmaceutical and / or laboratory utensils
DE102010051200A1 (en) * 2010-11-12 2012-05-16 Belimed Ag Wash arm arrangement for a multi-ply laundry pickup cart
US8357246B2 (en) 2009-02-20 2013-01-22 Whirlpool Corporation Obstacle sensing spray arm for a dishwashing machine
US9220393B2 (en) 2012-09-13 2015-12-29 Whirlpool Corporation Dishwasher with controlled rotation of lower spray arm
WO2021078718A1 (en) * 2019-10-25 2021-04-29 BSH Hausgeräte GmbH Dishwasher
US11896181B2 (en) 2022-06-13 2024-02-13 Whirlpool Corporation Dishwasher and method of operating

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4018048A1 (en) * 1990-06-06 1991-12-12 Licentia Gmbh Rotation sensor for electric dishwashing machine - uses light source and cooperating photodetector detecting rotation of spray arm
DE4235973A1 (en) * 1992-10-24 1994-04-28 Miele & Cie Control of water supply to programmable dishwashing machine - using rotating spray heads, with speed proportional to water pressure, and inlet valve to keep speed constant
DE4438036C2 (en) * 1994-10-25 1996-08-14 Bauknecht Hausgeraete Dishwasher with a rinse water circuit
DE102006007329B4 (en) * 2006-02-16 2018-02-15 BSH Hausgeräte GmbH Device for monitoring the operation of a dishwasher
DE102008020475A1 (en) 2008-04-23 2009-11-05 Miele & Cie. Kg Rinse cycle executing method for program-controlled household dishwasher, involves draining liquid from container at end of rinse cycle, and operating draining device and pump number of times alternatively during exchange

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203436B (en) * 1963-10-18 1965-10-21 Schaltgeraetebau W Nunn Magnetically operated floor switch for elevators
FR2442618A1 (en) * 1978-11-28 1980-06-27 Indesit Automatic dishwashing machine with visual and/or audible alarm - includes spray arm rotational speed detector warning of any item impeding rotation of spray arm
EP0053231A1 (en) * 1980-11-28 1982-06-09 Zeltron Istituto Zanussi Per L'elettronica S.P.A. Dishwasher with a control device for monitoring the rotation of the spray arms

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203436B (en) * 1963-10-18 1965-10-21 Schaltgeraetebau W Nunn Magnetically operated floor switch for elevators
FR2442618A1 (en) * 1978-11-28 1980-06-27 Indesit Automatic dishwashing machine with visual and/or audible alarm - includes spray arm rotational speed detector warning of any item impeding rotation of spray arm
EP0053231A1 (en) * 1980-11-28 1982-06-09 Zeltron Istituto Zanussi Per L'elettronica S.P.A. Dishwasher with a control device for monitoring the rotation of the spray arms

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931031A1 (en) * 1989-09-16 1991-03-28 Miele & Cie Electric dishwashing machine drainage filter unit - has sensor monitoring seating of individual filter for providing warning signal and/or adjusting operating programme
DE4010066A1 (en) * 1990-03-29 1991-10-02 Miele & Cie System for monitoring spray arm rotation of dishwasher - has each spray arm driven by reaction of rinsing liquid leaving spray arm nozzles and sensor detecting rotation
DE4020898A1 (en) * 1990-06-30 1992-01-02 Licentia Gmbh Dishwasher spray arm - has movement sensor to indicate blockage through incorrect loading
EP0534213A1 (en) * 1991-09-26 1993-03-31 ZANUSSI GRANDI IMPIANTI S.p.A. Monitoring arrangement for the washing and rinsing cycles of dishwashing machines
DE4215574A1 (en) * 1992-05-12 1993-11-18 Licentia Gmbh dishwasher
EP0962181A2 (en) * 1998-06-04 1999-12-08 AEG Hausgeräte GmbH Dishwasher with a rotating spray arm
EP0962181A3 (en) * 1998-06-04 2000-09-27 AEG Hausgeräte GmbH Dishwasher with a rotating spray arm
US6761179B2 (en) 1999-09-16 2004-07-13 Bsh Bosch Und Siemens Hausgerate Gmbh Device for monitoring the functioning of a rotating liquid-discharging appliance
DE102005033109A1 (en) * 2005-07-15 2007-01-25 Miele & Cie. Kg Circuit board arrangement e.g. for dishwashing machine sensor, uses hinge elements to joined individual circuit boards to one another
DE102005033110A1 (en) * 2005-07-15 2007-01-18 Miele & Cie. Kg dishwasher
EP1743566A2 (en) * 2005-07-15 2007-01-17 Miele &amp; Cie. KG Rinsing machine
EP1743566A3 (en) * 2005-07-15 2010-11-03 Miele & Cie. KG Rinsing machine
DE102005033110B4 (en) * 2005-07-15 2011-05-19 Miele & Cie. Kg dishwasher
DE102005033109B4 (en) * 2005-07-15 2012-07-19 Miele & Cie. Kg Dishwasher with a circuit board assembly
US8357246B2 (en) 2009-02-20 2013-01-22 Whirlpool Corporation Obstacle sensing spray arm for a dishwashing machine
DE102010051218A1 (en) * 2010-11-12 2012-05-16 Belimed Ag Washing arm for a cleaning machine for cleaning medical, pharmaceutical and / or laboratory utensils
DE102010051200A1 (en) * 2010-11-12 2012-05-16 Belimed Ag Wash arm arrangement for a multi-ply laundry pickup cart
DE102010051200B4 (en) * 2010-11-12 2012-06-06 Belimed Ag Wash arm arrangement for a multi-ply laundry pickup cart
US9220393B2 (en) 2012-09-13 2015-12-29 Whirlpool Corporation Dishwasher with controlled rotation of lower spray arm
WO2021078718A1 (en) * 2019-10-25 2021-04-29 BSH Hausgeräte GmbH Dishwasher
US11896181B2 (en) 2022-06-13 2024-02-13 Whirlpool Corporation Dishwasher and method of operating

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