EP1215989A1 - Dispositif pour surveiller le fonctionnement d'un dispositif rotatif, distribuant un liquide - Google Patents

Dispositif pour surveiller le fonctionnement d'un dispositif rotatif, distribuant un liquide

Info

Publication number
EP1215989A1
EP1215989A1 EP00960635A EP00960635A EP1215989A1 EP 1215989 A1 EP1215989 A1 EP 1215989A1 EP 00960635 A EP00960635 A EP 00960635A EP 00960635 A EP00960635 A EP 00960635A EP 1215989 A1 EP1215989 A1 EP 1215989A1
Authority
EP
European Patent Office
Prior art keywords
sensor
collecting chamber
liquid
dishwasher
level
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
EP00960635A
Other languages
German (de)
English (en)
Other versions
EP1215989B1 (fr
Inventor
Michael Rosenbauer
Bernd Schessl
Angelo Canova
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
Elbi International SpA
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Elbi International SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH, Elbi International SpA filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1215989A1 publication Critical patent/EP1215989A1/fr
Application granted granted Critical
Publication of EP1215989B1 publication Critical patent/EP1215989B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4409—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants by tipping containers or opening their lids, e.g. with the help of a programmer
    • 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
    • A47L2401/09—Water level
    • 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

Definitions

  • Fluid dispensing device for monitoring the function of a rotating.
  • the invention relates to a device for monitoring the function of a rotating, liquid-dispensing device.
  • Rotating, liquid-dispensing devices can be, for example, lawn sprinklers or spray arms of a dishwasher, etc. Should such a device malfunction, e.g. stop, a limited area of the lawn to be irrigated is irrigated with an unnecessarily large amount of water and the rest of the irrigating lawn area is irrigated, which on the one hand leads to the lawn dying due to over-watering and on the other hand due to non-watering and in the case of spray arms from dishwashers, the wash ware to be cleaned cannot be uniformly loaded with cleaning liquid, which leads to a poor cleaning result.
  • a device malfunction e.g. stop
  • a limited area of the lawn to be irrigated is irrigated with an unnecessarily large amount of water and the rest of the irrigating lawn area is irrigated, which on the one hand leads to the lawn dying due to over-watering and on the other hand due to non-watering and in the case of spray arms from dishwashers
  • DE-OS 37 32 451 discloses a monitoring device for the rotational movement of a spray arm of a dishwasher, in which only the rotational movement of the spray arm is controlled, but not the dispensing of liquid.
  • the invention is therefore based on the object of simply creating a device with which the entire function of a rotating, liquid-dispensing device can be monitored.
  • This object is achieved according to the invention in that at least one collecting chamber with at least one inlet opening and at least one outlet opening and with at least one sensor is arranged, for example in the area which is supplied with liquid by the device to be monitored, the outlet opening of which is smaller than the inlet opening Has cross section and the sensor is a level sensor, which forwards signals to a device for evaluation.
  • the collecting chamber in the device according to the invention is filled with the liquid via the inlet opening and emptied again through the outlet opening, so that the sensor detects a constantly fluctuating filling level in the collecting chamber, which of the evaluation device can be interpreted in a simple manner as a perfect function of the liquid-dispensing device. If the rotation and / or the dispensing of the liquid does not take place, whether the collecting chamber is acted upon or not, the sensor does not determine a constantly fluctuating filling level in the collecting chamber, which is then easily evaluated by the evaluation device as a malfunction of the liquid-dispensing device can be interpreted.
  • the sensor detects a constantly empty collecting chamber, but if the collecting chamber is constantly exposed to liquid while the device to be monitored is standing, the sensor detects a completely full collecting chamber. In both cases, no constantly fluctuating fill level is measured in any case, so that the evaluation device detects a malfunction of the liquid-dispensing device in a simple manner.
  • a device is created in a simple manner, with which the entire function of a rotating, liquid-dispensing device can be monitored.
  • the cross section of the inlet opening and the outlet opening and the volume of the collecting chamber are dimensioned such that the liquid level in the collecting chamber periodically oscillates around a predetermined reference level under normal operating conditions of the device to be monitored.
  • the device according to the invention becomes even more reliable since a periodically oscillating liquid level is even easier to evaluate.
  • the level sensor is an optical sensor, which simplifies the determination of the level in the collecting chamber.
  • the sensor part of the optical sensor is a V-angle shape of an essentially transparent vertical wall of the collecting chamber, the V-angle shape protruding with the tip into the interior of the collecting chamber.
  • these optical sensors usually called dipsticks with light refraction, for liquid level measurement, the device according to the invention becomes even more reliable.
  • the device is preferably arranged in a dishwasher for monitoring the function of at least one rotating spray arm spraying washing liquid, as a result of which the safe cleaning action of the dishwasher is ensured in a simple manner.
  • the device is advantageously arranged in a side wall of the dishwasher, which simplifies the installation of the device according to the invention.
  • the device is preferably arranged in a door of the dishwasher.
  • a wide variety of units are usually installed in the door of the dishwasher, so that the installation of a further unit does not mean a particularly great outlay.
  • the device is arranged in a cleaner addition unit.
  • the device according to the invention can be installed in the dishwasher without further effort.
  • the signals of the level sensor expediently lead via the device for evaluation to change in the control and / or to interrupt a program sequence and / or to activate an optical and / or acoustic signal Warning signal, with which deterioration of the cleaning result due to the malfunction of the spray arm can be avoided as far as possible.
  • FIG. 1 shows a dishwasher equipped with the device according to the invention in a partial view
  • FIG. 2 shows a front view of a detergent addition unit for a dishwasher, in which the device according to the invention is integrated,
  • FIG. 3 shows a part of the cleaner addition unit according to FIG. 2 in a perspective view
  • FIG. 4 shows a section through the cleaner addition unit according to lines IV-IV in FIG. 2 in an enlarged view
  • FIG. 5 shows a section through the cleaner addition unit according to lines V-V in FIG. 4 in an enlarged view.
  • the device according to the invention for monitoring the function of a rotating, liquid-dispensing device 4 is installed in a dishwasher 1, not shown in detail, partially shown in FIG. 1, with a washing container 2 which can be closed by a door 3, as a result of which a safe cleaning effect of the dishwasher 1 is ensured in a simple manner.
  • the rinsing container 2 there is at least one spray arm 4 equipped with a plurality of spray nozzles 5 - the rotating, liquid-dispensing device - the function of which is to be monitored with the device according to the invention.
  • the spray arm 4 is connected to a circulation pump, not shown, which supplies washing liquid which is taken from a collecting basin which is located at the bottom of the washing tank 2.
  • the door 3 of the dishwasher 1 carries a detergent addition unit 6 for detergent such as detergent and rinse aid.
  • This cleaner addition unit 6 is arranged in the area which is supplied with liquid by the device to be monitored - the spray arm 4 - and is periodically struck by the rinsing liquid dispensed by the spray arm 4.
  • the cleaner addition unit 6 consists of an upper part 7 at one end of which there is a cleaner receptacle 8 which is intended to receive a dose of cleaner and which in the exemplary embodiment can be closed by a sliding lid 9.
  • a hinged lid 10 for closing an opening 11 of a container 12, which is intended to hold a certain amount of rinse aid, is also attached to the upper part 7 of the detergent addition unit 6 at its other end.
  • the device according to the invention is arranged in the cleaner addition unit 6. By installing it in an assembly which is present in a dishwasher 1 anyway, the device according to the invention can be installed in the dishwasher 1 without any further effort.
  • the hinged lid 10 is provided with a plurality of substantially vertical and parallel openings 13. When the hinged lid 10 is closed, the openings 13 point in the direction of a front wall 7a of the upper part of the cleaner addition unit 6, in which a number of essentially horizontal inlet openings 14 of the device according to the invention are arranged.
  • a collection point 16 extends on the front wall 7a of the upper part 7 of the cleaner addition unit 6 and laterally and below the inlet openings 14, which collection point is formed by a pair of lateral and inclined ribs 17 which converge below the inlet openings 14 and are connected.
  • a vertical plate 18 extends, which is raised in relation to the plane of the front wall 7a.
  • a collecting chamber 19 of the device according to the invention Arranged in the interior of the upper part 7 of the cleaner addition unit 6 behind the front wall 7a, as can best be seen in FIGS. 4 and 5, is a collecting chamber 19 of the device according to the invention, which is provided in the lower region with a reduced outlet opening, which is indicated by 20 becomes.
  • the in the front wall 7a Upper part 7 of realized inlet openings 14 are directed towards the upper part of the collecting chamber 19 (see FIGS. 4 and 5).
  • the sensor is designed as an optical sensor, an electrical level sensor 21 being used, which can be seen in full in FIGS. 4 and 5 and which contains a feed line 22 (FIG. 5) with a pair of diodes, one diode being the transmitter to emit optical radiation and the other acts as a receiver. Both diodes are directed towards an essentially transparent vertical wall 23 of the collecting chamber 19.
  • a sensor part of the optical sensor 21 is implemented as a V-angle shape 24, which serves as a prism for possibly refraction of the optical radiation and projects with the tip into the interior of the collecting chamber 19.
  • the feed 22 is with the device for evaluation, not shown, for example. in a program control unit of the dishwasher 1, not described in detail.
  • part of the washing liquid dispensed by the rotating spray arm 4 periodically hits the detergent addition unit 6 and passes through the openings 13 of the hinged lid 10 into the collection point 16 and from there the amount removed by the collection point 16 arrives Flushing liquid into the device according to the invention, specifically through the inlet openings 14 into the collecting chamber 19.
  • the outlet opening 20 of the device according to the invention has a smaller cross section than the inlet opening 14, namely the cross section of the inlet opening 14 and the outlet opening 20 and the volume of the collecting chamber 19 are dimensioned such that under normal operating conditions of the spray arm 4 the liquid level in the collecting chamber 19 periodically oscillates around a predetermined reference level.
  • the sensor 21 supplies an electrical signal with respect to the development over time of the liquid level in the collecting chamber 19. Under normal operating conditions, the signal delivered by the sensor 21 oscillates periodically, just as the liquid level in the collecting chamber 19 oscillates.
  • the signal 21 provided by the level sensor stops oscillating. Particularly when the arm remains in a position in which it constantly sprays detergent in the direction of the collecting chamber 19, this collecting chamber 19 remains constantly filled to the level L, which corresponds to the overflow level determined by the upper edge of the plate 18 in the collecting point 16.
  • the collecting chamber 19 empties through the drain opening 20.
  • the blocking conditions of the spray arm can be determined by the basic signal supplied by the level sensor 21.
  • these signals from the level sensor 21 lead in the event of a fault in the program control unit connected to the device for evaluation to change the control and / or to interrupt a program sequence and / or to activate an optical and / or acoustic warning signal.
  • the device according to the invention for monitoring the function of a rotating, liquid-dispensing device - the spray arm 4 of the dishwasher 1 - can also be arranged on another side wall of the dishwasher 1 or at another location in the washing container 2 of the dishwasher 1 in the area to which liquid is applied become.
  • other level sensors can of course also be used instead of the one described here.
  • a device is created in a simple manner, with which the entire function of a rotating, liquid-dispensing device can be monitored.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Centrifugal Separators (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

L'invention vise à créer un dispositif pour surveiller le fonctionnement global d'un dispositif rotatif, distribuant un liquide (4). A cet effet, au moins une chambre collectrice (19) comprenant au moins un orifice d'entrée (14), au moins un orifice de sortie (20) et au moins un détecteur (21), est placée approximativement dans la zone alimentée en liquide par le dispositif à surveiller (4). La section transversale de l'orifice de sortie (20) est inférieure à celle de l'orifice d'entrée (14), et le détecteur (21) se présente sous la forme d'un palpeur de niveau qui transmet des signaux à une unité afin de permettre leur exploitation.
EP00960635A 1999-09-16 2000-09-08 Dispositif pour surveiller le fonctionnement d'un dispositif rotatif, distribuant un liquide Expired - Lifetime EP1215989B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT1999TO000789A IT1310723B1 (it) 1999-09-16 1999-09-16 Dispositivo per rilevare le condizioni di funzionamento di almenouna girante di spruzzatura di una macchina lavastoviglie
ITTO990789 1999-09-16
PCT/EP2000/008809 WO2001019229A1 (fr) 1999-09-16 2000-09-08 Dispositif pour surveiller le fonctionnement d'un dispositif rotatif, distribuant un liquide

Publications (2)

Publication Number Publication Date
EP1215989A1 true EP1215989A1 (fr) 2002-06-26
EP1215989B1 EP1215989B1 (fr) 2003-05-14

Family

ID=11418067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960635A Expired - Lifetime EP1215989B1 (fr) 1999-09-16 2000-09-08 Dispositif pour surveiller le fonctionnement d'un dispositif rotatif, distribuant un liquide

Country Status (8)

Country Link
US (1) US6761179B2 (fr)
EP (1) EP1215989B1 (fr)
AT (1) ATE240074T1 (fr)
DE (1) DE50002209D1 (fr)
ES (1) ES2199177T3 (fr)
IT (1) IT1310723B1 (fr)
TR (1) TR200200468T2 (fr)
WO (1) WO2001019229A1 (fr)

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EP1459675A1 (fr) * 2003-03-21 2004-09-22 Bonferraro S.p.A. Lave-vaisselle avec groupe capteurs dans la cuve
ITTO20030117U1 (it) * 2003-07-21 2005-01-22 Elbi Int Spa Dispositivo erogatore di detersivo in polvere per una macchina lavasto viglie.
EP1554970B1 (fr) * 2004-01-15 2011-08-24 Electrolux Home Products Corporation N.V. Dispositif et procédé d'apport des agents de nettoyage dans un appareil ménager de conduisant du liquide
DE102004063275A1 (de) * 2004-12-29 2006-07-13 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltgerät
DE102004063286B4 (de) * 2004-12-29 2023-04-20 BSH Hausgeräte GmbH Geschirrspülmaschine mit einer Auflösungskammer
EP1925250A1 (fr) * 2006-11-23 2008-05-28 Electrolux Home Products N.V. Lave-vaisselle avec dispositif d'alarme
US7709781B2 (en) * 2007-01-19 2010-05-04 Marquardt Gmbh Rotation sensor for a spraying arm in a dishwasher
ES2377302B1 (es) * 2009-07-09 2013-02-01 BSH Electrodomésticos España S.A. Máquina lavavajillas con un dispositivo rociador.
EP2272415B1 (fr) * 2009-07-09 2016-05-25 BSH Hausgeräte GmbH Lave-vaisselle doté d'un dispositif de vaporisation
DE102009044960A1 (de) * 2009-09-24 2011-03-31 Henkel Ag & Co. Kgaa Verfahren und System zur Detektion der Rotation eines Sprüharms in einer Geschirrspülmaschine
DE102010042579A1 (de) * 2010-10-18 2012-04-19 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit zumindest einem rotierbaren Sprüharm
DE102012004696B3 (de) * 2012-03-12 2013-07-11 Innovations-Transfer Uphoff Gmbh &.Co.Kg Verfahren und Vorrichtung zur Überprüfung von Reinigungs- und Desinfektionsgeräten
KR101998571B1 (ko) 2013-05-21 2019-07-10 삼성전자주식회사 노즐 어셈블리 및 이를 구비하는 식기세척기
KR102355623B1 (ko) * 2015-06-19 2022-01-26 엘지전자 주식회사 식기세척기 및 그 제어방법
DE102016112440A1 (de) * 2016-07-07 2018-01-11 Sanhua Aweco Appliance Systems Gmbh Geschirrspüler mit Sensoreinheit zur Bestimmung einer Drehbewegung eines Sprüharms
KR102429096B1 (ko) * 2018-02-08 2022-08-03 엘지전자 주식회사 식기세척기와 그의 제어방법
US11259681B2 (en) 2019-09-30 2022-03-01 Midea Group Co., Ltd Dishwasher with image-based diagnostics
US11191416B2 (en) 2019-09-30 2021-12-07 Midea Group Co., Ltd. Dishwasher with image-based position sensor
US11464389B2 (en) 2019-09-30 2022-10-11 Midea Group Co., Ltd. Dishwasher with image-based detergent sensing
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US11399690B2 (en) 2019-09-30 2022-08-02 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11202550B2 (en) 2019-11-20 2021-12-21 Midea Group Co., Ltd. Dishwasher thermal imaging system
CN112369987A (zh) * 2020-10-29 2021-02-19 上海明略人工智能(集团)有限公司 用于检测喷淋液量分布的方法及装置、设备

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Also Published As

Publication number Publication date
US6761179B2 (en) 2004-07-13
WO2001019229A1 (fr) 2001-03-22
ITTO990789A1 (it) 2001-03-16
EP1215989B1 (fr) 2003-05-14
DE50002209D1 (de) 2003-06-18
TR200200468T2 (tr) 2002-08-21
IT1310723B1 (it) 2002-02-22
US20020185162A1 (en) 2002-12-12
ES2199177T3 (es) 2004-02-16
ITTO990789A0 (it) 1999-09-16
ATE240074T1 (de) 2003-05-15

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