EP1215989B1 - Device for monitoring the function of a rotating device which delivers liquid - Google Patents

Device for monitoring the function of a rotating device which delivers liquid Download PDF

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Publication number
EP1215989B1
EP1215989B1 EP00960635A EP00960635A EP1215989B1 EP 1215989 B1 EP1215989 B1 EP 1215989B1 EP 00960635 A EP00960635 A EP 00960635A EP 00960635 A EP00960635 A EP 00960635A EP 1215989 B1 EP1215989 B1 EP 1215989B1
Authority
EP
European Patent Office
Prior art keywords
collecting chamber
dishwashing machine
liquid
sensor
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.)
Expired - Lifetime
Application number
EP00960635A
Other languages
German (de)
French (fr)
Other versions
EP1215989A1 (en
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
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Publication of EP1215989A1 publication Critical patent/EP1215989A1/en
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Publication of EP1215989B1 publication Critical patent/EP1215989B1/en
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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
    • A47L15/0018—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

  • 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 in the function to be disturbed, e.g. stay with lawn sprinklers one limited area of the lawn to be wetted with an unnecessarily large amount of water and the rest of the enticing lawn does not rain, which is on one side due to over-watering and on the other hand due to non-irrigation leads to the death of the lawn and can with spray arms of dishwashers the items to be cleaned are not uniformly supplied with cleaning liquid, which leads to a poor cleaning result.
  • a monitoring device for the rotational movement a spray arm of a dishwasher in which exclusively the rotation of the spray arm is controlled, but not the release of liquid.
  • the invention is therefore based on the object, in a simple manner, a device to create, with which the entire function of a rotating, liquid releasing Device can be monitored.
  • This object is achieved in that approximately in the by to monitoring device with liquid acted upon area at least one Collection chamber with at least one inlet opening and at least one outlet opening and is arranged with at least one sensor, wherein the output opening has a smaller cross-section with respect to the inlet opening and wherein the sensor a level sensor is that passes signals to a device for evaluation.
  • the collecting chamber in the inventive device filled with the liquid via the inlet opening and through the outlet opening again deflated, so that the sensor has a constantly fluctuating filling level in the collecting chamber Determines what the evaluation device in a simple manner as ongoing Function of the liquid dispensing device can be interpreted. Should the Rotation and / or the delivery of the liquid does not take place, whether the collection chamber is applied or not, the sensor is a constantly fluctuating filling level in the collecting chamber was not detected, which then from the evaluation device simple fashion interpreted as dysfunction of the fluid-dispensing device can be. If the collection chamber is not fluid, e.g.
  • the sensor detects a constantly empty collecting chamber, the collecting chamber should but constantly exposed to liquid when standing to be monitored device be detected by the sensor a constantly completely filled collection chamber. In both cases, no constantly fluctuating filling level is measured, so that the evaluation device in a simple manner a malfunction the fluid-emitting device detected.
  • the invention is on simple way of creating a device with which the whole function of a rotating, fluid-emitting device can be monitored.
  • the cross section of the inlet opening and the outlet opening and the volume of the collecting chamber are dimensioned so that Under normal operating conditions of the equipment to be monitored the liquid level in the collecting chamber periodically by a predetermined reference level commutes.
  • the device according to the invention is still functionally reliable, because a periodically oscillating liquid level is even easier to evaluate.
  • the level sensor is an optical one Sensor, which simplifies the determination of the level in the collecting chamber is reached.
  • the sensor part of the optical Sensors a V-angle shape of a substantially transparent vertical wall of the Collecting chamber, with the V-angle shape with the tip inside the collecting chamber protrudes.
  • optical Sensors for liquid level measurement become the device according to the invention even more reliable.
  • the device is preferably in a dishwasher for monitoring the function arranged at least one rotating, spraying liquid spraying spray arm, whereby the safe cleaning effect of the dishwasher on simple Way is guaranteed.
  • the device is arranged in a side wall of the dishwasher, thus achieving a simplification of the installation of the device according to the invention becomes.
  • the device is arranged in a door of the dishwasher.
  • the Door of the dishwasher are usually installed a variety of aggregates, so that the installation of another unit means no great expense.
  • the device is arranged in a detergent adding unit.
  • the signals of the level sensor in case of failure on the device for the evaluation of the change in the control and / or the interruption of a Program sequence and / or to activate an optical and / or acoustic Warning signal, whereby deterioration of the cleaning result by the malfunction the spray arm can be avoided as much as possible.
  • the device according to the invention is for monitoring the function of a rotating, fluid-emitting device 4 in an in Fig. 1 partially, schematically illustrated, unspecified described dishwasher 1 with a closable by a door 3 rinse tank 2 installed, creating a ensures safe cleaning effect of the dishwasher 1 in a simple manner is ..
  • the washing container 2 is at least one with a plurality of spray nozzles. 5 equipped spray arm 4 - the rotating liquid dispensing device - whose function is to be monitored with the device according to the invention.
  • the spray arm 4 is connected to a circulating pump, not shown, the rinsing liquid supplied, which is taken from a reservoir, which is located on the ground of the washing compartment 2 is located.
  • a detergent adding unit 6 for detergent such as cleaner and rinse aid.
  • This cleaner adding unit 6 is in the one to be monitored by the device to be monitored. the spray arm 4 - liquid applied area and is periodically taken from the dispensed from the spray arm 4 rinsing liquid.
  • the detergent adding unit 6 consists of a Upper part 7 at one end there is a cleaner receptacle 8 to the is determined to include a dose of detergent and in the embodiment by a sliding lid 9 is closed. In the illustrated embodiment is continue on the upper part 7 of the detergent adding unit 6 at its other end Hinged lid 10 for closing an opening 11 of a container 12 attached to the intended to receive a certain amount of rinse aid.
  • the inventive device is in the described embodiment in the Cleaner addition unit 6 is arranged.
  • installation in a dishwasher 1 already existing aggregate is the installation of the device according to the invention in the dishwasher 1 without further effort possible.
  • the hinged lid 10 is in a plurality of substantially vertical and parallel Provided openings 13.
  • the openings show 13 in the direction of a front wall 7a of the upper part of the detergent adding unit 6, in FIG the number of substantially horizontal inlet openings 14 of the invention Device are arranged.
  • a Collecting point 16 which is formed by a pair of lateral and inclined ribs 17, which converge below the inlet openings 14 and connected to each other are.
  • a vertical Plate 18 which is raised relative to the plane of the front wall 7a.
  • a collecting chamber 19 of the invention Device arranged in the lower area with a reduced Output opening is indicated at 20.
  • the in the front wall 7a of the Upper part 7 realized inlet openings 14 are on the upper part of the collecting chamber 19 directed (see Figures 4 and 5).
  • a sensor 21 which is designed as a level sensor, arranged, the signals to a device, not shown, for evaluation passes.
  • the sensor is designed as an optical sensor, wherein an electrical level sensor 21 is used which is complete in FIGS. 4 and 5 5 and includes a lead 22 (FIG. 5) having a pair of diodes, one diode as a transmitter for emitting an optical radiation and the other as a receiver acts. Both diodes are in the direction of a substantially transparent vertical wall 23 of the collecting chamber 19 directed.
  • this wall 23 is a sensor part of the optical Sensor 21 as a V-angle mold 24 realized that as a prism for ev refraction of the optical Radiation serves and with the tip into the interior of the collecting chamber 19 protrudes.
  • the feeder 22 is connected to the device, not shown, for evaluation, z-B. in one Not described program control device of the dishwasher 1, connected.
  • Spray arm 4 dispensed rinse liquid periodically to the cleaner addition unit 6 and passes through the openings 13 of the hinged lid 10 in the collection point 16th and from there passes through the collecting point 16 removed amount of washing liquid in the device according to the invention and through the inlet openings 14 in the collecting chamber 19.
  • the outlet opening 20 of the device according to the invention has a relation to the Inlet opening 14 smaller cross section on and that is the cross section of the inlet opening 14 and the outlet opening 20 and the volume of the collecting chamber 19 are dimensioned are that under normal operating conditions of the spray arm 4 the Liquid level in the collecting chamber 19 periodically by a predetermined reference level commutes.
  • the sensor 21 provides an electrical signal regarding the temporal evolution of the Liquid levels in the collecting chamber 19.
  • the signal provided by the sensor 21 periodically shifts, just as the liquid level in the collecting chamber 19 oscillates.
  • the spray arm 4 is blocked, e.g. as a result of the movement and or displacement of crockery, that hears from the level sensor delivered signal 21 to commute.
  • this collecting chamber 19 is constantly filled to the level L, which with the overflow level determined by the upper edge of the plate 18 in the collection point 16 matches.
  • the collecting chamber is emptied 19 through the drain opening 20th
  • the blocking conditions of the spray arm are detected by the base signal supplied by the level sensor 21.
  • These Signals of the level sensor 21 lead in the illustrated embodiment in case of failure in the program controller associated with the means for evaluation for modification in the control and / or interruption of a program flow and / or for Activation of an optical and / or acoustic warning signal.
  • inventive device for monitoring the function of a rotating, liquid-dispensing device - the spray arm 4 of the dishwasher 1 - also on another side wall of the dishwasher 1 or elsewhere in the washing container 2 of the dishwasher 1 in the liquid be arranged area acted upon.
  • others can as well Level sensors are used instead of the one described here.
  • a device is provided in a simple manner with which the monitored the entire function of a rotating, liquid-emitting device can be.

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

A device for monitoring the functioning of a rotating liquid-discharging appliance includes at least one collecting chamber with at least one inlet orifice, at least one outlet orifice, and at least one sensor. The outlet orifice of the collecting chamber has a smaller cross section than the inlet orifice, and the sensor is a level sensor that transmits signals to an evaluation apparatus, by which an entire functioning of the rotating liquid-discharging appliance can be monitored. The monitoring device is disposed approximately in a region acted upon with liquid by the appliance to be monitored.

Description

Die Erfindung betrifft eine Vorrichtung zur Überwachung der Funktion einer sich drehenden, Flüssigkeit abgebenden Einrichtung.The invention relates to a device for monitoring the function of a rotating, Liquid dispensing device.

Sich drehende, Flüssigkeit abgebende Einrichtungen können beispielsweise Rasensprenger oder Sprüharme einer Geschirrspülmaschine usw. sein. Sollte eine derartige Einrichtung in der Funktion gestört sein, z.B. stehen bleiben, wird bei Rasensprengern eine begrenzte Fläche des zu beregnenden Rasens mit einer unnötig großen Wassermenge und der Rest der beregnenden Rasenfläche nicht beregnet, was auf der einen Seite aufgrund der Überwässerung und auf der anderen Seite aufgrund der Nichtbewässerung zum Absterben des Rasens führt und kann bei Sprüharmen von Geschirrspülmaschinen das zu reinigende Spülgut nicht gleichmäßig mit Reinigungsflüssigkeit beaufschlagt werden, was zu einem mangelhaften Reinigungsergebnis führt. Sollte die Funktionsstörung einer derartigen Einrichtung aber keine Flüssigkeit abgeben, führt dies bei Rasensprengern natürlich auch zum Absterben des Rasens aufgrund der Nichtbewässerung und bei Sprüharmen von Geschirrspülmaschinen natürlich zu keinerlei Reinigungsergebnis, da mit das zu reinigende Spülgut nicht mit Reinigungsflüssigkeit beaufschlagt wird und die Reinigung im wesentlichen durch die Reinigungsflüssigkeit erfolgt.Rotating, liquid dispensing devices can be, for example, lawn sprinklers or spray arms of a dishwasher, etc. Should such a Device in the function to be disturbed, e.g. stay with lawn sprinklers one limited area of the lawn to be wetted with an unnecessarily large amount of water and the rest of the enticing lawn does not rain, which is on one side due to over-watering and on the other hand due to non-irrigation leads to the death of the lawn and can with spray arms of dishwashers the items to be cleaned are not uniformly supplied with cleaning liquid, which leads to a poor cleaning result. Should the malfunction But such a device does not give off any liquid, this leads to lawn sprinklers of course also to the death of the lawn due to non-irrigation and at Sprüharmen of dishwashers, of course, no cleaning result, since with the items to be cleaned is not treated with cleaning liquid and the Cleaning is carried out essentially by the cleaning liquid.

Aus der DE-OS 37 32 451 ist beispielsweise eine Überwachungseinrichtung für die Drehbewegung eines Sprüharmes einer Geschirrspülmaschine bekannt, bei der ausschließlich die Drehbewegung des Sprüharmes kontrolliert wird, nicht aber die Abgabe von Flüssigkeit.From DE-OS 37 32 451, for example, a monitoring device for the rotational movement a spray arm of a dishwasher, in which exclusively the rotation of the spray arm is controlled, but not the release of liquid.

Der Erfindung liegt daher die Aufgabe zugrunde, auf einfache Art und Weise eine Vorrichtung zu schaffen, mit der die gesamte Funktion einer sich drehenden, Flüssigkeit abgebenden Einrichtung überwacht werden kann. The invention is therefore based on the object, in a simple manner, a device to create, with which the entire function of a rotating, liquid releasing Device can be monitored.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß etwa in dem durch von der zu überwachenden Einrichtung mit Flüssigkeit beaufschlagten Bereich wenigstens eine Auffangkammer mit wenigstens einer Eintrittsöffnung und wenigstens einer Ausgangsöffnung und mit wenigstens einem Sensor angeordnet ist, wobei deren Ausgangsöffnung einen gegenüber der Eintrittsöffnung kleineren Querschnitt aufweist und wobei der Sensor ein Niveaufühler ist, der Signale an eine Einrichtung zur Auswertung weitergibt.This object is achieved in that approximately in the by to monitoring device with liquid acted upon area at least one Collection chamber with at least one inlet opening and at least one outlet opening and is arranged with at least one sensor, wherein the output opening has a smaller cross-section with respect to the inlet opening and wherein the sensor a level sensor is that passes signals to a device for evaluation.

Bei der fehlerfreien Drehung der Flüssigkeit abgebenden Einrichtung und bei fehlerfreier Abgabe der Flüssigkeit wird bei der erfindungsgemäßen Vorrichtung die Auffangkammer über die Eintrittsöffnung mit der Flüssigkeit gefüllt und durch die Ausgangsöffnung wieder entleert, so daß der Sensor ein ständig schwankendes Füllniveau in der Auffangkammer feststellt, was von der Auswertungseinrichtung auf einfache Art und Weise als einwandfrei Funktion der Flüssigkeit abgebenden Einrichtung gedeutet werden kann. Sollte die Drehung und/oder die Abgabe der Flüssigkeit nicht stattfinden, ob die Auffangkammer beaufschlagt wird oder nicht, wird vom Sensor ein ständig schwankendes Füllniveau in der Auffangkammer nicht festgestellt, was dann von der Auswertungseinrichtung auf einfache Art und Weise als Funktionsstörung der Flüssigkeit abgebenden Einrichtung gedeutet werden kann. Wenn die Auffangkammer nicht mit Flüssigkeit beaufschlagt, z.B. bei stehender zu überwachender Einrichtung oder bei Fehlen der Flüssigkeitsabgabe, wird vom Sensor eine ständig leere Auffangkammer festgestellt, sollte die Auffangkammer aber bei stehender zu überwachender Einrichtung ständig mit Flüssigkeit beaufschlagt werden, wird vom Sensor eine ständig vollständig gefüllte Auffangkammer festgestellt. In beiden Fällen wird auf jeden Fall kein ständig schwankendes Füllniveau gemessen, so daß die Auswertungseinrichtung auf einfache Art und Weise eine Funktionsstörung der Flüssigkeit abgebenden Einrichtung festgestellt. Mit der Erfindung ist auf einfache Art und Weise eine Vorrichtung geschaffen, mit der die gesamte Funktion einer sich drehenden, Flüssigkeit abgebenden Einrichtung überwacht werden kann.In the error-free rotation of the liquid-emitting device and error-free Delivery of the liquid is the collecting chamber in the inventive device filled with the liquid via the inlet opening and through the outlet opening again deflated, so that the sensor has a constantly fluctuating filling level in the collecting chamber Determines what the evaluation device in a simple manner as impeccable Function of the liquid dispensing device can be interpreted. Should the Rotation and / or the delivery of the liquid does not take place, whether the collection chamber is applied or not, the sensor is a constantly fluctuating filling level in the collecting chamber was not detected, which then from the evaluation device simple fashion interpreted as dysfunction of the fluid-dispensing device can be. If the collection chamber is not fluid, e.g. when the device to be monitored is stationary or in the absence of fluid delivery, if the sensor detects a constantly empty collecting chamber, the collecting chamber should but constantly exposed to liquid when standing to be monitored device be detected by the sensor a constantly completely filled collection chamber. In both cases, no constantly fluctuating filling level is measured, so that the evaluation device in a simple manner a malfunction the fluid-emitting device detected. With the invention is on simple way of creating a device with which the whole function of a rotating, fluid-emitting device can be monitored.

Nach einem bevorzugten Merkmal der Erfindung sind der Querschnitt der Eintrittsöffnung und der Ausgangsöffnung sowie das Volumen der Auffangkammer so dimensioniert, daß unter normalen Funktionsbedingungen der zu überwachenden Einrichtung das Flüssigkeitsniveau in der Auffangkammer periodisch um ein vorher bestimmtes Bezugsniveau pendelt. Mit dieser Maßnahme wird die erfindungsgemäße Vorrichtung noch funktionssicherer, da ein periodisch pendelndes Flüssigkeitsniveau noch leichter auszuwerten ist. According to a preferred feature of the invention, the cross section of the inlet opening and the outlet opening and the volume of the collecting chamber are dimensioned so that Under normal operating conditions of the equipment to be monitored the liquid level in the collecting chamber periodically by a predetermined reference level commutes. With this measure, the device according to the invention is still functionally reliable, because a periodically oscillating liquid level is even easier to evaluate.

Nach einer bevorzugten Ausführungsform der Erfindung ist der Niveausensor ein optischer Sensor, womit eine Vereinfachung der Feststellung des Niveaus in der Auffangkammer erreicht wird.According to a preferred embodiment of the invention, the level sensor is an optical one Sensor, which simplifies the determination of the level in the collecting chamber is reached.

Nach einer vorteilhaften Ausführungsform der Erfindung ist der Fühlerteil des optischen Sensors eine V-Winkel-Form einer im wesentlichen transparenten vertikalen Wand der Auffangkammer, wobei die V-Winkel-Form mit der Spitze ins Innere der Auffangkammer ragt. Bei Verwendung dieser üblicherweise Tauchstäbe mit Lichtbrechung genannten optischen Sensoren zur Flüssigkeitsniveaumessung wird die erfindungsgemäße Vorrichtung noch funktionssicherer.According to an advantageous embodiment of the invention, the sensor part of the optical Sensors a V-angle shape of a substantially transparent vertical wall of the Collecting chamber, with the V-angle shape with the tip inside the collecting chamber protrudes. When using these commonly dip rods with refraction called optical Sensors for liquid level measurement become the device according to the invention even more reliable.

Bevorzugt ist die Vorrichtung in einer Geschirrspülmaschine zur Überwachung der Funktion wenigstens eines sich drehenden, Spülflüssigkeit versprühenden Sprüharmes angeordnet, wodurch die sichere Reinigungswirkung der Geschirrspülmaschine auf einfache Art und Weise gewährleistet ist.The device is preferably in a dishwasher for monitoring the function arranged at least one rotating, spraying liquid spraying spray arm, whereby the safe cleaning effect of the dishwasher on simple Way is guaranteed.

Vorteilhafterweise ist die Vorrichtung in einer Seitenwand der Geschirrspülmaschine angeordnet, womit eine Vereinfachung des Einbaus der erfindungsgemäßen Vorrichtung erreicht wird.Advantageously, the device is arranged in a side wall of the dishwasher, thus achieving a simplification of the installation of the device according to the invention becomes.

Bevorzugt ist die Vorrichtung in einer Tür der Geschirrspülmaschine angeordnet ist. In der Tür der Geschirrspülmaschine sind üblicherweise verschiedenste Aggregate eingebaut, so daß der Einbau eines weiteren Aggregates keinen besonders großen Aufwand bedeutet.Preferably, the device is arranged in a door of the dishwasher. In the Door of the dishwasher are usually installed a variety of aggregates, so that the installation of another unit means no great expense.

In besonders vorteilhafter Weise ist die Vorrichtung in einer Reinigerzugabeeinheit angeordnet. Durch Einbau in ein in einer Geschirrspülmaschine ohnehin vorhandenes Aggregat wird der Einbau der erfindungsgemäßen Vorrichtung in der Geschirrspülmaschine ohne weiteren Aufwand möglich.In a particularly advantageous manner, the device is arranged in a detergent adding unit. By installation in an already existing in a dishwasher aggregate is the installation of the device according to the invention in the dishwasher possible without further effort.

Zweckmäßigerweise führen die Signale des Niveausensors im Fehlerfalle über die Einrichtung zur Auswertung zur Änderung in der Steuerung und/oder zur Unterbrechung eines Programmablaufes und/oder zur Aktivierung eines optischen und/oder akustischen Warnsignals, womit Verschlechterungen des Reinigungsergebnisses durch die Fehlfunktion des Sprüharmes soweit wie möglich vermieden werden können.Conveniently, the signals of the level sensor in case of failure on the device for the evaluation of the change in the control and / or the interruption of a Program sequence and / or to activate an optical and / or acoustic Warning signal, whereby deterioration of the cleaning result by the malfunction the spray arm can be avoided as much as possible.

Die Erfindung wird nachstehend anhand dem in der Zeichnung dargestellten Ausführungsbeispiel erläutert. Es zeigen

Fig. 1
eine Geschirrspülmaschine ausgerüstet mit der erfindungsgemäßen Vorrichtung in einer Teilansicht,
Fig. 2
eine Vorderansicht einer Reinigerzugabeeinheit für eine Geschirrspülmaschine, in die die erfindungsgemäße Vorrichtung integriert ist,
Fig. 3
einen Teil der Reinigerzugabeeinheit nach Fig. 2 in perspektivischer Ansicht,
Fig. 4
einen Schnitt durch die Reinigerzugabeeinheit entsprechend den Linien IV-IV in Fig. 2 in vergrößerter Darstellung und
Fig. 5
einen Schnitt durch die Reinigerzugabeeinheit entsprechend den Linien V-V in Fig. 4 in vergrößerter Darstellung.
The invention will be explained below with reference to the embodiment shown in the drawing. Show it
Fig. 1
a dishwasher equipped with the device according to the invention in a partial view,
Fig. 2
a front view of a detergent adding unit for a dishwasher, in which the device according to the invention is integrated,
Fig. 3
3 shows a part of the detergent adding unit according to FIG. 2 in a perspective view,
Fig. 4
a section through the detergent adding unit according to the lines IV-IV in Fig. 2 in an enlarged view and
Fig. 5
a section through the cleaner addition unit corresponding to the lines VV in Fig. 4 in an enlarged view.

In dem gezeigten Ausführungsbeispiel ist die erfindungsgemäße Vorrichtung zur Überwachung der Funktion einer sich drehenden, Flüssigkeit abgebenden Einrichtung 4 in eine in Fig. 1 teilweise, schematisch dargestellte, nicht näher beschriebene Geschirrspülmaschine 1 mit einem durch eine Tür 3 verschließbaren Spülbehälter 2 eingebaut, wodurch eine sichere Reinigungswirkung der Geschirrspülmaschine 1 auf einfache Art und Weise gewährleistet ist..In the embodiment shown, the device according to the invention is for monitoring the function of a rotating, fluid-emitting device 4 in an in Fig. 1 partially, schematically illustrated, unspecified described dishwasher 1 with a closable by a door 3 rinse tank 2 installed, creating a ensures safe cleaning effect of the dishwasher 1 in a simple manner is ..

In dem Spülbehälter 2 befindet sich wenigstens ein mit einer Mehrzahl von Spritzdüsen 5 ausgestatteter Sprüharm 4 - die sich drehende, Flüssigkeit abgebende Einrichtung -, dessen Funktion mit der erfindungsgemäßen Vorrichtung überwacht werden soll. Wie bekannt, ist der Sprüharm 4 mit einer nicht gezeigten Umwälzpumpe verbunden, die Spülflüssigkeit liefert, die aus einem Sammelbecken entnommen wird, welches sich am Boden des Spülbehälters 2 befindet.In the washing container 2 is at least one with a plurality of spray nozzles. 5 equipped spray arm 4 - the rotating liquid dispensing device - whose function is to be monitored with the device according to the invention. As known, the spray arm 4 is connected to a circulating pump, not shown, the rinsing liquid supplied, which is taken from a reservoir, which is located on the ground of the washing compartment 2 is located.

Auf der ins Innere der Spülbehälter 2 gerichteten Seite trägt die Tür 3 der Geschirrspülmaschine 1 eine Reinigerzugabeeinheit 6 für Spülmittel, wie Reiniger und Klarspüler. On the directed into the interior of the washing container 2 side carries the door 3 of the dishwasher 1, a detergent adding unit 6 for detergent, such as cleaner and rinse aid.

Diese Reinigerzugabeeinheit 6 ist in dem durch von der zu überwachenden Einrichtung - dem Sprüharm 4 - mit Flüssigkeit beaufschlagten Bereich angeordnet und wird periodisch von der von dem Sprüharm 4 abgegebenen Spülflüssigkeit getroffen.This cleaner adding unit 6 is in the one to be monitored by the device to be monitored. the spray arm 4 - liquid applied area and is periodically taken from the dispensed from the spray arm 4 rinsing liquid.

Wie besser in den Figuren 2 und 3 zu sehen, besteht die Reinigerzugabeeinheit 6 aus einem Oberteil 7 an dessen einem Ende sich eine Reinigeraufnahme 8 befindet, die dazu bestimmt ist, eine Dosis von Reiniger aufzunehmen und die im Ausführungsbeispiel durch einen Schiebedeckel 9 verschließbar ist. Bei dem dargestellten Ausführungsbeispiel ist weiterhin am Oberteil 7 der Reinigerzugabeeinheit 6 an dessem anderem Ende ein Klappdeckel 10 zum Verschluß einer Öffnung 11 eines Behälters 12 angebracht, der dazu bestimmt ist, eine bestimmte Menge von Klarspüler aufzunehmen.As better seen in Figures 2 and 3, the detergent adding unit 6 consists of a Upper part 7 at one end there is a cleaner receptacle 8 to the is determined to include a dose of detergent and in the embodiment by a sliding lid 9 is closed. In the illustrated embodiment is continue on the upper part 7 of the detergent adding unit 6 at its other end Hinged lid 10 for closing an opening 11 of a container 12 attached to the intended to receive a certain amount of rinse aid.

Die erfindungsgemäße Vorrichtung ist bei dem beschriebenen Ausführungsbeispiel in der Reinigerzugabeeinheit 6 angeordnet. Durch Einbau in ein in einer Geschirrspülmaschine 1 ohnehin vorhandenes Aggregat wird der Einbau der erfindungsgemäßen Vorrichtung in der Geschirrspülmaschine 1 ohne weiteren Aufwand möglich.The inventive device is in the described embodiment in the Cleaner addition unit 6 is arranged. By installation in a dishwasher 1 already existing aggregate is the installation of the device according to the invention in the dishwasher 1 without further effort possible.

Der Klappdeckel 10 ist in mit einer Mehrzahl von im wesentlichen vertikalen und parallelen Öffnungen 13 versehen. Wenn der Klappdeckel 10 geschlossen ist, zeigen die Öffnungen 13 in Richtung einer Frontwand 7a des Oberteiles der Reinigerzugabeeinheit 6, in der eine Anzahl von im wesentlichen horizontalen Eingangsöffnungen 14 der erfindungsgemäßen Vorrichtung angeordnet sind.The hinged lid 10 is in a plurality of substantially vertical and parallel Provided openings 13. When the flip cover 10 is closed, the openings show 13 in the direction of a front wall 7a of the upper part of the detergent adding unit 6, in FIG the number of substantially horizontal inlet openings 14 of the invention Device are arranged.

Wie in den Figuren 3 und 4 ersichtlich, erstreckt sich an der Frontwand 7a des Oberteiles 7 der Reinigerzugabeeinheit 6 sowie seitlich und unterhalb der Eingangsöffnungen 14 eine Sammelstelle 16, die durch ein Paar seitliche und geneigte Rippen 17 gebildet wird, die unterhalb der Eingangsöffnungen 14 zusammenlaufen und miteinander verbunden sind. In der somit von den Rippen 17 gebildeten Sammelstelle 16 erstreckt sich eine vertikale Platte 18, die gegenüber der Ebene der Frontwand 7a erhöht verläuft.As can be seen in Figures 3 and 4, extends to the front wall 7a of the upper part 7 of the cleaner addition unit 6 and laterally and below the inlet openings 14 a Collecting point 16, which is formed by a pair of lateral and inclined ribs 17, which converge below the inlet openings 14 and connected to each other are. In the collecting point 16 thus formed by the ribs 17 extends a vertical Plate 18, which is raised relative to the plane of the front wall 7a.

Im Inneren des Oberteiles 7 der Reinigerzugabeeinheit 6 ist hinter der Frontwand 7a, wie am besten in den Figuren 4 und 5 zu erkennen ist, eine Auffangkammer 19 der erfindungsgemäßen Vorrichtung angeordnet, die im unteren Bereich mit einer verkleinerten Ausgangsöffnung versehen ist, die mit 20 angegeben wird. Die in der Frontwand 7a des Oberteiles 7 realisierten Eingangsöffnungen 14 sind auf den oberen Teil der Auffangkammer 19 gerichtet (siehe Figuren 4 und 5).Inside the upper part 7 of the cleaner addition unit 6 is behind the front wall 7 a, such as Best seen in Figures 4 and 5, a collecting chamber 19 of the invention Device arranged in the lower area with a reduced Output opening is indicated at 20. The in the front wall 7a of the Upper part 7 realized inlet openings 14 are on the upper part of the collecting chamber 19 directed (see Figures 4 and 5).

In der Auffangkammer 19 ist ein Sensor 21, der als Niveaufühler ausgebildet ist, angeordnet, der Signale an eine nicht gezeigte Einrichtung zur Auswertung weitergibt. Im gezeigten Ausführungsbeispiel ist der Sensor als ein optischer Sensor ausgebildet, wobei ein elektrischer Niveausensor 21 verwendet wird, der komplett in den Figuren 4 und 5 zu sehen ist und eine Zuführung 22 (Fig. 5) mit einem Diodenpaar beinhaltet, wobei eine Diode als Sender zum Aussenden einer optischen Strahlung und die andere als Empfänger wirkt. Beide Dioden sind in Richtung einer im wesentlichen transparenten vertikalen Wand 23 der Auffangkammer 19 gerichtet. In dieser Wand 23 ist ein Fühlerteil des optischen Sensors 21 als eine V-Winkel-Form 24 realisiert, die als Prisma zur ev. Brechung der optischen Strahlung dient und mit der Spitze ins Innere der Auffangkammer 19 ragt.In the collecting chamber 19, a sensor 21, which is designed as a level sensor, arranged, the signals to a device, not shown, for evaluation passes. Im shown Embodiment, the sensor is designed as an optical sensor, wherein an electrical level sensor 21 is used which is complete in FIGS. 4 and 5 5 and includes a lead 22 (FIG. 5) having a pair of diodes, one diode as a transmitter for emitting an optical radiation and the other as a receiver acts. Both diodes are in the direction of a substantially transparent vertical wall 23 of the collecting chamber 19 directed. In this wall 23 is a sensor part of the optical Sensor 21 as a V-angle mold 24 realized that as a prism for ev refraction of the optical Radiation serves and with the tip into the interior of the collecting chamber 19 protrudes.

Die Zuführung 22 ist mit der nicht gezeigten Einrichtung zur Auswertung, z-B. in einem nicht näher beschriebenen Programmsteuergerät der Geschirrspülmaschine 1, verbunden.The feeder 22 is connected to the device, not shown, for evaluation, z-B. in one Not described program control device of the dishwasher 1, connected.

Während des Betriebes der Geschirrspülmaschine 1 trifft ein Teil der von dem sich drehenden Sprüharm 4 abgegebenen Spülflüssigkeit periodisch auf die Reinigerzugabeeinheit 6 und gelangt durch die Öffnungen 13 des Klappdeckels 10 in die Sammelstelle 16 und von dort gelangt die durch die Sammelstelle 16 entnommene Menge an Spülflüssigkeit in die erfindungsgemäße Vorrichtung und zwar durch die Eingangsöffnungen 14 in die Auffangkammer 19.During operation of the dishwasher 1, a portion of the of the rotating meets Spray arm 4 dispensed rinse liquid periodically to the cleaner addition unit 6 and passes through the openings 13 of the hinged lid 10 in the collection point 16th and from there passes through the collecting point 16 removed amount of washing liquid in the device according to the invention and through the inlet openings 14 in the collecting chamber 19.

Die Ausgangsöffnung 20 der erfindungsgemäßen Vorrichtung weist einen gegenüber der Eintrittsöffnung 14 kleineren Querschnitt auf und zwar ist der Querschnitt der Eintrittsöffnung 14 und der Ausgangsöffnung 20 sowie das Volumen der Auffangkammer 19 so dimensioniert sind, daß unter normalen Funktionsbedingungen des Sprüharmes 4 das Flüssigkeitsniveau in der Auffangkammer 19 periodisch um ein vorher bestimmtes Bezugsniveau pendelt.The outlet opening 20 of the device according to the invention has a relation to the Inlet opening 14 smaller cross section on and that is the cross section of the inlet opening 14 and the outlet opening 20 and the volume of the collecting chamber 19 are dimensioned are that under normal operating conditions of the spray arm 4 the Liquid level in the collecting chamber 19 periodically by a predetermined reference level commutes.

Der Sensor 21 liefert ein elektrisches Signal bezüglich der zeitlichen Entwicklung des Flüssigkeitsniveaus in der Auffangkammer 19. The sensor 21 provides an electrical signal regarding the temporal evolution of the Liquid levels in the collecting chamber 19.

Unter normalen Funktionsbedingungen pendelt das vom Sensor 21 gelieferte Signal periodisch, genauso wie das Flüssigkeitsniveau in der Auffangkammer 19 pendelt.Under normal operating conditions, the signal provided by the sensor 21 periodically shifts, just as the liquid level in the collecting chamber 19 oscillates.

Wenn während des Betriebes der Geschirrspülmaschine 1 der Sprüharm 4 blockiert wird, z.B. in Folge der Bewegung und oder Verschiebung von Geschirr, hört das vom Niveausensor gelieferte Signal 21 auf zu pendeln. Besonders wenn der Arm in einer Position stehen bleibt in der dieser konstant Spülmittel in Richtung der Auffangkammer 19 versprüht, verbleibt diese Auffangkammer 19 ständig bis zum Niveau L gefüllt, welches mit dem vom oberen Rand der Platte 18 in der Sammelstelle 16 bestimmten Überlaufniveau übereinstimmt.If, during operation of the dishwasher 1, the spray arm 4 is blocked, e.g. as a result of the movement and or displacement of crockery, that hears from the level sensor delivered signal 21 to commute. Especially when the arm in one position remains standing in the sprayed this constant rinsing agent in the direction of the collecting chamber 19, this collecting chamber 19 is constantly filled to the level L, which with the overflow level determined by the upper edge of the plate 18 in the collection point 16 matches.

Wenn jedoch der Sprüharm 4 in einer Position stehen bleibt, in der die ausgesandten Flüssigkeitsstrahlen nicht mehr den Klappdeckel 10 der Reinigerzugabeeinheit 6 treffen, und/oder wenn die Abgabe der Spülflüssigkeit nicht stattfindet entleert sich die Auffangkammer 19 durch die Ablauföffnung 20.However, if the spray arm 4 stops in a position in which the emitted Liquid jets no longer hit the hinged lid 10 of the detergent adding unit 6, and / or if the dispensing of the rinsing liquid does not take place, the collecting chamber is emptied 19 through the drain opening 20th

In den beiden oben berücksichtigten Fällen können die Blockierbedingungen des Sprüharmes durch das vom Niveausensor 21 gelieferte Basissignal festgestellt werden. Diese Signale des Niveausensors 21 führen im gezeigten Ausführungsbeispiel im Fehlerfalle in dem mit der Einrichtung zur Auswertung verbundenen Programmsteuergerät zur Änderung in der Steuerung und/oder zur Unterbrechung eines Programmablaufes und/oder zur Aktivierung eines optischen und/oder akustischen Warnsignals.In the two cases considered above, the blocking conditions of the spray arm are detected by the base signal supplied by the level sensor 21. These Signals of the level sensor 21 lead in the illustrated embodiment in case of failure in the program controller associated with the means for evaluation for modification in the control and / or interruption of a program flow and / or for Activation of an optical and / or acoustic warning signal.

Natürlich kann die erfindungsgemäße Vorrichtung zur Überwachung der Funktion einer sich drehenden, Flüssigkeit abgebenden Einrichtung - des Sprüharmes 4 der Geschirrspülmaschine 1 - auch an einer anderen Seitenwand der Geschirrspülmaschine 1 oder an anderer Stelle in dem Spülbehälter 2 der Geschirrspülmaschine 1 in dem mit Flüssigkeit beaufschlagten Bereich angeordnet werden. Weiterhin können natürlich auch andere Niveausensoren anstatt dem hier beschriebenen benutzt werden.Of course, the inventive device for monitoring the function of a rotating, liquid-dispensing device - the spray arm 4 of the dishwasher 1 - also on another side wall of the dishwasher 1 or elsewhere in the washing container 2 of the dishwasher 1 in the liquid be arranged area acted upon. Of course, others can as well Level sensors are used instead of the one described here.

Mit der Erfindung ist auf einfache Art und Weise eine Vorrichtung geschaffen, mit der die gesamte Funktion einer sich drehenden, Flüssigkeit abgebenden Einrichtung überwacht werden kann.With the invention, a device is provided in a simple manner with which the monitored the entire function of a rotating, liquid-emitting device can be.

Claims (9)

  1. Device for monitoring the function of a rotating, liquid-dispensing device (4), characterised in that a collecting chamber (19) with at least one inlet opening (14), at least one outlet opening (20) and at least one sensor (21) is arranged approximately in the region acted on by liquid from the device (4) to be monitored, wherein the outlet opening (20) thereof has a smaller cross-section relative to the inlet opening (14) and wherein the sensor (21) is a level detector which passes on signals to a device for evaluating.
  2. Device according to claim 1, characterised in that the cross-section of the inlet opening (14) and of the outlet opening (20) as well as the volume of the collecting chamber (19) are so dimensioned that under normal functional conditions of the device (4) to be monitored the liquid level in the collecting chamber (19) periodically fluctuates about a previously determined reference level.
  3. Device according to claim 1 or 2, characterised in that the level sensor (21) is an optical sensor.
  4. Device according to claim 3, characterised in that the detector part of the optical sensor (21) is a V-angled shape (24) of a substantially transparent vertical wall (23) of the collecting chamber (19), wherein the V-angled shape (24) projects by the apex into the interior of the collecting chamber (19).
  5. Dishwashing machine (1), characterised in that the dishwashing machine comprises a device corresponding to one of claims 1 to 4, wherein the device is arranged for monitoring the function of at least one rotating spray arm (4), which sprays rinsing liquid, in the dishwashing machine.
  6. Dishwashing machine according to claim 5, characterised in that the device is arranged in a side wall of the dishwashing machine (1).
  7. Dishwashing machine according to one of claims 5 and 6, characterised in that the device is arranged in a door (3) of the dishwashing machine (1).
  8. Dishwashing machine according to one of claims 5 to 7, characterised in that the device is arranged in a cleaning agent admetering unit (6).
  9. Device according to one of claims 1 to 4 or dishwashing machine according to one of claims 5 to 8, characterised in that the signals of the level sensor (21) in the case of fault lead, by way of the device for evaluating, to change in the control and/or to interruption of a program sequence and/or to activation of an optical and/or acoustic alarm signal.
EP00960635A 1999-09-16 2000-09-08 Device for monitoring the function of a rotating device which delivers liquid Expired - Lifetime EP1215989B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT1999TO000789A IT1310723B1 (en) 1999-09-16 1999-09-16 DEVICE TO DETECT THE OPERATING CONDITIONS OF AT LEAST ONE SPRAYING IMPELLER OF A DISHWASHER MACHINE
ITTO990789 1999-09-16
PCT/EP2000/008809 WO2001019229A1 (en) 1999-09-16 2000-09-08 Device for monitoring the function of a rotating device which delivers liquid

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EP1215989A1 EP1215989A1 (en) 2002-06-26
EP1215989B1 true EP1215989B1 (en) 2003-05-14

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

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Publication number Publication date
IT1310723B1 (en) 2002-02-22
ES2199177T3 (en) 2004-02-16
US20020185162A1 (en) 2002-12-12
WO2001019229A1 (en) 2001-03-22
TR200200468T2 (en) 2002-08-21
EP1215989A1 (en) 2002-06-26
US6761179B2 (en) 2004-07-13
DE50002209D1 (en) 2003-06-18
ATE240074T1 (en) 2003-05-15
ITTO990789A0 (en) 1999-09-16
ITTO990789A1 (en) 2001-03-16

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