EP2614763B1 - Verfahren zum Erkennen der Drehung eines Spülmaschinensprüharms - Google Patents

Verfahren zum Erkennen der Drehung eines Spülmaschinensprüharms Download PDF

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Publication number
EP2614763B1
EP2614763B1 EP12150555.6A EP12150555A EP2614763B1 EP 2614763 B1 EP2614763 B1 EP 2614763B1 EP 12150555 A EP12150555 A EP 12150555A EP 2614763 B1 EP2614763 B1 EP 2614763B1
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EP
European Patent Office
Prior art keywords
spray arm
dishwasher
tub
vibration sensor
rotation
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.)
Active
Application number
EP12150555.6A
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English (en)
French (fr)
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EP2614763A1 (de
Inventor
Enrico Brambilla
Maurizio Ugel
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Electrolux Home Products Corp NV
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Electrolux Home Products Corp NV
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Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP12150555.6A priority Critical patent/EP2614763B1/de
Priority to PL12150555T priority patent/PL2614763T3/pl
Priority to PCT/EP2013/050378 priority patent/WO2013104700A1/en
Publication of EP2614763A1 publication Critical patent/EP2614763A1/de
Application granted granted Critical
Publication of EP2614763B1 publication Critical patent/EP2614763B1/de
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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
    • A47L15/0018—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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4246—Details of the tub
    • 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
    • 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
    • A47L2401/32—Vibration or sound detection
    • 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
    • A47L2501/22—Loading doors, e.g. door latches, inflatable door seals
    • 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

Definitions

  • the present invention relates to a method for detecting rotation of a dishwasher spray arm and a dishwasher adapted to perform such a method.
  • the proper rotation of the spray arm thus can be reliably determined, basically by counting the peaks of the signal received from the vibration sensor and comparing the peak count with an expected value which is a design parameter for the specific dishwasher. While there may be situations wherein a signal peak is generated which is not directly associated to a rotation of the spray arm but which may be caused for example by an incidental impact of water jets that are reflected from articles within the dishwasher tub onto which a jet of cleaning liquid is sprayed, the predetermined target range for the count value should include some tolerance range which in the example referred to above wherein the spray arm rotates at a speed of 38 rpm may be selected as ⁇ 6 peak counts when measuring for a time period of one minute.
  • the target range for the count value could be selected for example as the standard rotational speed ⁇ 2 rpm, wherein it is determined that the spray arm correctly rotates if the count value falls within such target range.
  • the measuring cycle is repeated or a further more detailed evaluation routine is conducted. While a similar safety range could be provided at the lower end of the target range it of course is also possible to provide such a safety range in which the evaluation is repeated or altered only at one end of the target range.

Claims (16)

  1. Verfahren zum Erkennen der Drehung eines Spülmaschinensprüharms, wobei das Verfahren Folgendes aufweist:
    (a) Erkennen von während des Betriebs des Geschirrspülers erzeugten Vibrationen,
    (b) Vergleichen des Niveaus der erkannten Vibrationen mit einem im Voraus bestimmten Schwellenwert, und Erhöhen eines Zählwerts in Abhängigkeit davon, ob das Niveau der erkannten Vibrationen den im Voraus bestimmten Schwellenwert übersteigt;
    (c) Vergleichen des Zählwerts, der während einer im Voraus bestimmten Zeitperiode erhalten wird, mit einem im Voraus bestimmten Zielbereich; und
    (d) Bestimmen, dass eine Störung der Drehung des Sprüharms vorliegt, wenn der Zählwert außerhalb des im Voraus bestimmten Zielbereichs liegt.
  2. Verfahren nach Anspruch 1, wobei in Schritt (b) der Zählwert nur dann erhöht wird, wenn das Niveau der erkannten Vibrationen den im Voraus stimmten Schwellenwert während einer im Voraus bestimmten Zeit übersteigt.
  3. Verfahren nach Anspruch 1 oder 2, wobei Schritt (b) ferner nach dem Erhöhen des Zählwerts ein Warten auf eine im Voraus bestimmte Abtastperiode und danach ein weiteres Erhöhen des Zählwerts, wenn das Niveau der erkannten Vibrationen den im Voraus bestimmten Schwellenwert übersteigt, aufweist.
  4. Verfahren nach Anspruch 3, wobei die Abtastperiode auf einer Zielfrequenz der Drehung des Sprüharms basiert.
  5. Verfahren nach einem der vorhergehenden Ansprüche, wobei in Schritt (d) bestimmt ist, dass der Sprüharm mit einer Drehzahl rotiert, die sich von der Konstruktionsdrehzahl unterscheidet, wenn der Zählwert innerhalb eines im Voraus bestimmten Bereichs liegt, der höher oder niedriger ist als der im Voraus bestimmte Zielbereich.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei in Schritt (a) ein von einem Vibrationssensor bereitgestelltes Spannungssignal in ein logisches Signal umgewandelt wird.
  7. Verfahren nach Anspruch 6, wobei in Schritt (a) das Spannungssignal in ein Transistor-Transistor-Logik- (TTL-)-Signal umgewandelt wird.
  8. Verfahren nach einem der vorhergehenden Ansprüche, ferner aufweisend ein Bestimmen eines Effektivwerts (RMS-Werts) von mehreren in Schritt (a) ausgeführten Messungen und Anwenden des so erhaltenen Effektivwerts (RMS-Werts) in Schritt (b) als Niveau der erkannten Vibrationen.
  9. Geschirrspüler (10), aufweisend eine Reinigungswanne (12) zur Aufnahme von zu reinigenden Gegenständen, mindestens einen innerhalb der Reinigungswanne zum Richten einer Reinigungsflüssigkeit auf die zu reinigenden Gegenstände angeordneten Sprüharm (16) und einen Vibrationssensor (24) zum Erkennen von während des Betriebs des Geschirrspülers erzeugten Vibrationen, dadurch gekennzeichnet, dass der Geschirrspüler (10) ferner Mittel zum Erkennen einer Drehung des Sprüharms (16), wobei das Mittel zum Ausführen des Vorgangs nach einem der vorhergehenden Ansprüche angepasst ist.
  10. Geschirrspüler nach Anspruch 9, wobei der Vibrationssensor (24) einen piezoelektrischen Schocksensor aufweist.
  11. Geschirrspüler nach Anspruch 9 oder 10, wobei der Vibrationssensor (24) angepasst ist zum Erzeugen eines Spannungsausgangssignals, das im Wesentlichen proportional der durch eine mechanische Vibration des Sensors verursachten Beschleunigung des Sensors ist.
  12. Geschirrspüler nach einem der Ansprüche 9 bis 11, wobei der Vibrationssensor (24) auf der Außenseite der Wanne (12) angebaut ist.
  13. Geschirrspüler nach Anspruch 12, wobei der Vibrationssensor an einer Seitenwand (26) der Wanne (12) angebaut ist.
  14. Geschirrspüler nach Anspruch 13, wobei der Sprüharm (16) mindestens eine treibende Düse (20) zur Ausgabe eines Wasserstrahls in einem Winkel zur Rotationsachse (22) des Sprüharms aufweist, und wobei der Vibrationssensor (24) an einer Seitenwand (26) der Wanne (10) auf ungefähr einer Höhe, auf der der von der treibenden Düse ausgegebene Wasserstrahl auf die Seitenwand der Wanne auftrifft, angebaut ist.
  15. Geschirrspüler nach einem der Ansprüche 12 bis 14, wobei der Vibrationssensor (24) auf der Außenseite der Wanne (12) durch eine im Wesentlichen starre Verbindung angebaut ist.
  16. Geschirrspüler nach Anspruch 15, wobei der Vibrationssensor (25) direkt an der Außenseite der Wanne (12) angeklebt ist.
EP12150555.6A 2012-01-10 2012-01-10 Verfahren zum Erkennen der Drehung eines Spülmaschinensprüharms Active EP2614763B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP12150555.6A EP2614763B1 (de) 2012-01-10 2012-01-10 Verfahren zum Erkennen der Drehung eines Spülmaschinensprüharms
PL12150555T PL2614763T3 (pl) 2012-01-10 2012-01-10 Sposób detekcji obrotów ramienia rozpylacza zmywarki do naczyń
PCT/EP2013/050378 WO2013104700A1 (en) 2012-01-10 2013-01-10 Method for detecting rotation of a dishwasher spray arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12150555.6A EP2614763B1 (de) 2012-01-10 2012-01-10 Verfahren zum Erkennen der Drehung eines Spülmaschinensprüharms

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EP2614763A1 EP2614763A1 (de) 2013-07-17
EP2614763B1 true EP2614763B1 (de) 2015-03-25

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PL (1) PL2614763T3 (de)
WO (1) WO2013104700A1 (de)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US11428735B1 (en) 2019-03-14 2022-08-30 Maxim Integrated Products, Inc. System for monitoring and controlling an integrated circuit testing machine

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Publication number Priority date Publication date Assignee Title
PL3043691T3 (pl) * 2013-09-13 2020-08-24 Electrolux Appliances Aktiebolag Wykrywanie otwarcia wieczka dozownika środka zmywającego w zmywarce
WO2015036040A1 (en) * 2013-09-13 2015-03-19 Electrolux Appliances Aktiebolag Determining operational states of a dishwasher
DE102013226637A1 (de) * 2013-12-19 2015-06-25 Meiko Maschinenbau Gmbh & Co. Kg Reinigungsvorrichtung und Verfahren zur Reinigung von Reinigungsgut
US10362923B2 (en) * 2017-01-13 2019-07-30 Haier Us Appliance Solutions, Inc. Valve for a spray arm of a dishwasher appliance
EP3488756B1 (de) * 2017-11-24 2020-09-23 Vestel Elektronik Sanayi ve Ticaret A.S. Geschirrspülmaschine und verfahren
EP3756831A1 (de) * 2019-06-25 2020-12-30 Hilti Aktiengesellschaft Sensor zur erfassung einer mechanischen spannung auf einem batteriepack
CN110353596A (zh) * 2019-07-05 2019-10-22 广东万家乐厨房科技有限公司 一种喷淋臂堵转处理方法及洗碗机
TR202010950A2 (tr) 2020-07-10 2022-01-21 Arçeli̇k Anoni̇m Şi̇rketi̇ Ariza kontrol si̇stemi̇ i̇çeren bi̇r bulaşik maki̇nesi̇
KR20220060328A (ko) * 2020-11-04 2022-05-11 엘지전자 주식회사 식기 세척기
WO2023110075A1 (en) * 2021-12-15 2023-06-22 Electrolux Appliances Aktiebolag Dishwasher and method of operating a dishwasher

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JPH0531063A (ja) * 1991-07-29 1993-02-09 Matsushita Electric Ind Co Ltd 食器洗浄機
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US11428735B1 (en) 2019-03-14 2022-08-30 Maxim Integrated Products, Inc. System for monitoring and controlling an integrated circuit testing machine

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EP2614763A1 (de) 2013-07-17
WO2013104700A1 (en) 2013-07-18
PL2614763T3 (pl) 2015-08-31

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