EP2428153A1 - Household device, in particular dishwasher without a handle - Google Patents

Household device, in particular dishwasher without a handle Download PDF

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Publication number
EP2428153A1
EP2428153A1 EP11401567A EP11401567A EP2428153A1 EP 2428153 A1 EP2428153 A1 EP 2428153A1 EP 11401567 A EP11401567 A EP 11401567A EP 11401567 A EP11401567 A EP 11401567A EP 2428153 A1 EP2428153 A1 EP 2428153A1
Authority
EP
European Patent Office
Prior art keywords
door opening
door
opening sensor
sensor
signal
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
EP11401567A
Other languages
German (de)
French (fr)
Other versions
EP2428153B1 (en
Inventor
Volker Backherms
Dominic Beier
Stefan Tiekötter
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL11401567T priority Critical patent/PL2428153T3/en
Publication of EP2428153A1 publication Critical patent/EP2428153A1/en
Application granted granted Critical
Publication of EP2428153B1 publication Critical patent/EP2428153B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/79—Power-operated mechanisms for wings with automatic actuation using time control
    • 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
    • A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/77—Power-operated mechanisms for wings with automatic actuation using wireless control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • 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
    • A47L15/4265—Arrangements of door covering/decoration panels or plinths, e.g. for integrated dishwashers
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/30—Electronic control of motors
    • E05Y2400/3013—Electronic control of motors during manual wing operation
    • E05Y2400/3015—Power assistance
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/80—User interfaces
    • E05Y2400/85—User input means
    • E05Y2400/852—Sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/80—User interfaces
    • E05Y2400/85—User input means
    • E05Y2400/856—Actuation thereof
    • E05Y2400/858—Actuation thereof by body parts, e.g. by feet
    • E05Y2400/86—Actuation thereof by body parts, e.g. by feet by hand
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/73—Multiple functions
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/304—Application of doors, windows, wings or fittings thereof for domestic appliances for dishwashers

Definitions

  • the invention relates to a domestic appliance, in particular handle-less dishwasher or handle-free refrigerator, with a door, wherein an opening drive is provided to move the door from a closed position to an at least partially open position, wherein a door opening sensor for detecting an acoustically voiced door opening request of a user is provided, and wherein the door opening sensor is coupled to the door.
  • Such household appliances are known from the prior art.
  • Customers are increasingly in demand lately so-called fully integrated household appliances.
  • a fully integrated household appliance is designed handle-less. This means that the appliance in particular can be completely covered.
  • the opening of a door or a drawer takes place in such a household appliance no longer mechanically by pulling on a handle, but rather by means of a corresponding mechatronic system.
  • detect one or more sensors a door opening request of a user, and as a result, an opening drive can cause an opening of the door or drawer.
  • WO 2009/132813 A1 is a generic handle-less fully integrated dishwasher known.
  • a decorative plate is resiliently mounted on the door.
  • a sensor for detecting a relative movement between the decorative plate and the door is provided.
  • a force sensor, piezoelectric sensor, contact or proximity sensor is used as the sensor.
  • a tilt sensor which comprises a three-axis acceleration sensor.
  • the door opening sensor is a three-axis sensor.
  • a three-axis sensor such a sensor that measures signals in three independent spatial directions. It is therefore a three-dimensional measuring sensor, wherein the three measuring directions are preferably orthogonal to each other.
  • the core idea of the invention is therefore to determine from which spatial direction a signal acts on the household appliance.
  • a useful signal that is to say a door opening request of a user
  • interference signals If, for example, an object is placed on top of the household appliance, then a signal, in particular a vibration, acts domineurally on the household appliance from above.
  • a signal is already identified as an interference signal on the basis of the spatial direction from which it acts on the household appliance.
  • the three-axis sensor is a monolithic element, so that the invention synergistically also reduces cabling and assembly costs than is known with the use of two or more prior art sensors.
  • the door opening sensor is in particular a three-axis acceleration sensor.
  • a sensor measures accelerations, where a vibration is proportional to the acceleration.
  • One possible measuring principle of such a sensor is that according to which the sensor capacitively measures the deflections of a reference mass. The deflection of the reference mass is proportional to the acceleration.
  • Such sensors can be designed as a micro-electro-mechanical system (MEMS).
  • MEMS micro-electro-mechanical system
  • accelerations can be precisely measured with such a sensor, while at the same time having a fully integrated design, low cost and small space.
  • the three-axis sensor can also be designed as a three-axis vibration sensor or the like.
  • the household appliance on a decorative plate This is connected to the outside, that is the door of the door accessible to the user when the door is closed.
  • the decorative plate thus provides an interface between the user and the household appliance.
  • the door opening sensor is mechanically decoupled from the decorative panel. This means that there is no direct operative connection between decorative panel and door opening sensor.
  • the door opening sensor is therefore not, as known from the prior art sensors attached to the decorative panel, but rather spaced from this spatially.
  • thus acting on the decorative panel signals, such as structure-borne noise, not directly transmitted to the door opening sensor.
  • the decorative plate is connected by means of fastening means with the door.
  • the fastening means can be designed in particular as hooks, pins, screws or the like.
  • a signal acting on the decorative panel in particular a knocking signal of the user, is transmitted to the door via the fastening means.
  • the door opening sensor is arranged, without a direct operative connection to other components of the door.
  • the door opening sensor can be carried in particular by an electronics.
  • the decorative plate is made of metal, in particular stainless steel. It can also be provided that the decorative plate is designed as a hollow body.
  • the door opening sensor arrangement according to the invention allows namely to use these decorative panels, since the sensor signals are not affected thereby.
  • sensors known from the prior art in particular capacitive sensors and / or structure-borne sound sensors.
  • decor panels made of metal, in particular stainless steel can be used, which is often desired by customers.
  • the door can be intuitively opened by knocking, since a user is usually used to knocking on the door, for example, when entering a room. Furthermore, a high-quality visual impression of the household appliance is ensured because a user knocks on the appliance, in contrast to a pressure, as is known in the prior art, in which, for example, fingerprints on the surface of the appliance arise.
  • a method for operating a door opening mechanism for a domestic appliance comprising the method steps: measuring a first signal by means of a door opening sensor; Measuring a second signal by means of the door opening sensor; Measuring a third signal by means of the door opening sensor; and determine a spatial direction from which a signal source results by calculating a total signal of the three measurement signals of the door opening sensor.
  • signals in particular accelerations or vibrations from all three spatial directions are measured by the door opening sensor.
  • data processing means in particular a control computer
  • the three signals of the door opening sensor are read in and / or evaluated.
  • a spatial direction can be determined, from which a signal acts on the sensor.
  • it can thus be determined whether a signal acts perpendicular to the door surface, and thus a useful signal is present, or a signal from another spatial direction, for example by placing an object on the household appliance, is present, and thus an interference signal is present.
  • the opening drive can be triggered by means of an electronic system, as a result of which the door is moved from a closed position into an at least partially open position.
  • the signals of the door opening sensor are filtered, so that only a limited frequency band is provided. It can thus be defined a frequency band in which useful signals, ie opening requests of a user, are expected. Signals that are outside of this frequency band are correspondingly filtered away, so that triggering of the opening drive at these frequencies is excluded.
  • a filter can be formed in particular by a bandpass filter.
  • a spectral analysis of the three signals of the door opening sensor can be calculated and / or evaluated. In an advantageous manner, it is thus possible to determine whether a corresponding signal amplitude is present at a specific signal frequency, in particular the expected frequency of a knock signal. If such is present, a door opening will be triggered as a result.
  • a specific signal frequency in particular the expected frequency of a knock signal.
  • acceleration integrals of the three signals of the door opening sensor are calculated and / or evaluated.
  • the acceleration signals are thereby filtered and thus unwanted frequency ranges cut off.
  • useful signals and interference signals can be discriminated more reliably and ensure safe operation of the household appliance.
  • the FIG. 1 shows a handle-less, fully integrated dishwasher 10, comprising a Spülraum 107 and a door 1.
  • the door 1 comprises a door inner panel 2, a door outer panel 3, and a diaphragm 17.
  • a device control 6 is arranged within the panel 17, a device control 6 is arranged.
  • the device controller 6 comprises a control board 14, wherein the control board 14 carries a door opening sensor 9.
  • the door 1 further comprises a decorative plate 4, which is connected by means of fastening means 12 with the door 1.
  • the door opening sensor 9 is therefore arranged within the door 1, without direct operative connection to the other components of the door 1. In particular, there is no direct operative connection between decorative panel 4 and door opening sensor 9.
  • the decorative panel 4 completely covers the door 1.
  • a door opening is made as follows:
  • a user expresses a door opening request by knocking S against the decorative plate 4.
  • the knocking S is in the FIG. 1 indicated in the direction 18, thus applies substantially perpendicular to the door surface.
  • a door opening request of a user is thus in particular an acoustically voiced door opening request of the user.
  • the knock signal S is transmitted from the decorative plate 4 via the fastening means 12 to the door.
  • the Door comprises the components already described, wherein door outer panel 3, door inner panel 2 and panel 17 can each be connected to each other.
  • the knock signal S is thus also transmitted to the diaphragm 17, and thus also to the device control 6, the control board 14 and the door opening sensor 9.
  • the door opening sensor 9 is a three-axis sensor, in particular a three-axis acceleration sensor. This measures signals in the in the FIG. 1 illustrated three orthogonal spatial directions X, Y, Z.
  • the three signals of the door opening sensor 9 by means of a control computer are read and evaluated.
  • a knock signal 18 is an exemplary waveform of the three axes of the door opening sensor 9 in FIG. 3 shown.
  • One axis in each case measures a signal in one of the spatial directions X, Y, Z.
  • the respective signal level is plotted over time.
  • a canceled value L forms a threshold whose violation is evaluated by the device control 6.
  • the threshold value L is exceeded in the spatial direction X.
  • the spatial direction X represents that spatial direction 18 from which the knocking signal S, that is to say the useful signal, is expected.
  • the device controller 6 triggers the opening drive (not shown) of the dishwasher 10, and the door 1 is opened by a motor.
  • the threshold value L in the direction of the space Z is exceeded, as would be evaluated by the device controller 6 as an interference signal.
  • a signal excursion in the direction Z of space may result, for example, from placing an object on the dishwasher 10.
  • FIGS. 2a and 2 B show two different embodiments of the door 1 according to the invention the dishwasher 10.
  • the door opening sensor 9 is supported by the control board 14, which is disposed within the device control 6 in a diaphragm 17.
  • display and control elements 8 by means of which the user can select, for example, a washing program.
  • the display and control elements 8 are connected to a display and operation control 13.
  • FIG. 2b now shows an alternative arrangement of the door opening sensor 9.
  • the door opening sensor 9 is supported by a display and control board 15 which is disposed within the display and operation control 13.
  • Other arrangements of the door opening sensor 9 are also conceivable.
  • the door opening sensor 9 depending on the arrangement within the door 1 measures the useful signals in a different measuring axis. It is therefore to perform a calibration depending on the arrangement of the door opening sensor 9, whereby the measuring axis of the useful signal is determined.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The device e.g. dishwasher (10), has an opening drive provided for moving a door (1) from a closed position into a partial opened position. A door opening sensor (9) is provided for recognizing an acoustic expressed door opening desire of a user. The door opening sensor is coupled with the door, and provided as a three-axis-acceleration sensor or three-axis-vibration sensor. The door opening sensor is mechanically decoupled from a decoration board (4), which is connected with the door via fixation units (12) e.g. hooks, where the decoration board is made of metal. An independent claim is also included for a method for operating a door opening mechanism for a dishwasher and cooling refrigerator.

Description

Die Erfindung betrifft ein Haushaltgerät, insbesondere grifflose Geschirrspülmaschine oder griffloses Kühlgerät, mit einer Tür, wobei ein Öffnungsantrieb vorgesehen ist, um die Tür aus einer geschlossenen Position in eine zumindest teilweise geöffnete Position zu bewegen, wobei ein Türöffnungssensor zum Erkennen eines akustisch geäußerten Türöffnungswunsches eines Nutzers vorgesehen ist, und wobei der Türöffnungssensor mit der Tür gekoppelt ist.The invention relates to a domestic appliance, in particular handle-less dishwasher or handle-free refrigerator, with a door, wherein an opening drive is provided to move the door from a closed position to an at least partially open position, wherein a door opening sensor for detecting an acoustically voiced door opening request of a user is provided, and wherein the door opening sensor is coupled to the door.

Derartige Haushaltgeräte sind aus dem Stand der Technik bekannt. Von Kunden werden in letzter Zeit vermehrt sogenannte vollintegrierte Haushaltgeräte nachgefragt. Ein vollintegriertes Haushaltgerät ist grifflos ausgebildet. Dies bedeutet, dass das Haushaltgerät insbesondere vollständig verkleidet sein kann. Das Öffnen einer Tür oder einer Schublade erfolgt bei einem solchen Haushaltgerät nicht mehr mechanisch durch Ziehen an einem Griff, sondern vielmehr mittels eines entsprechenden mechatronischen Systems. Dabei detektieren ein oder mehrere Sensoren einen Türöffnungswunsch eines Nutzers, und in der Folge kann ein Öffnungsantrieb ein Öffnen der Tür oder Schublade bewirken.Such household appliances are known from the prior art. Customers are increasingly in demand lately so-called fully integrated household appliances. A fully integrated household appliance is designed handle-less. This means that the appliance in particular can be completely covered. The opening of a door or a drawer takes place in such a household appliance no longer mechanically by pulling on a handle, but rather by means of a corresponding mechatronic system. In this case, detect one or more sensors a door opening request of a user, and as a result, an opening drive can cause an opening of the door or drawer.

Aus der WO 2009/132813 A1 ist eine gattungsgemäße grifflose vollintegrierte Geschirrspülmaschine bekannt. Hierzu ist an der Tür eine Dekorplatte federnd gelagert. Weiterhin ist ein Sensor zur Erfassung einer relativen Bewegung zwischen Dekorplatte und Tür vorgesehen. Als Sensor kommt dabei insbesondere ein Kraftsensor, piezoelektrischer Sensor, Berührungs- oder Näherungssensor zum Einsatz. Für eine sichere Unterscheidung zwischen einem Nutzsignal und einem Störsignal ist bei dieser Vorrichtung eine entsprechend hohe Betätigungskraft erforderlich.From the WO 2009/132813 A1 is a generic handle-less fully integrated dishwasher known. For this purpose, a decorative plate is resiliently mounted on the door. Furthermore, a sensor for detecting a relative movement between the decorative plate and the door is provided. In particular, a force sensor, piezoelectric sensor, contact or proximity sensor is used as the sensor. For a reliable distinction between a useful signal and an interference signal, a correspondingly high actuating force is required in this device.

Andererseits ist aus der DE 20 2007 006 818 U1 ein Schubladenschrank bekannt, welcher zum Erkennen eines akustisch geäußerten Türöffnungswunsches eines Nutzers ausgebildet ist. Hierzu sind Schallsensoren vorgesehen, wobei vorgeschlagen wird, dass ein Schallsensor mittels eines federbelasteten Fühlers mit den Schubladen verbunden ist, und ein anderer Schallsensor im hinteren Bereich des Schubladenschranks angeordnet ist. Die Unterscheidung zwischen Nutzsignal und Störsignal, die sogenannte Signaldiskriminierung, erfolgt mittels Auswertung der Laufzeitunterschiede der Signale beider Sensoren. Für einen zufriedenstellenden Betrieb sind hierbei mehrere räumlich getrennte Sensoren notwendig, was mit einem entsprechenden Montage-, Kontaktierungs- und Verdrahtungsaufwand einhergeht.On the other hand is from the DE 20 2007 006 818 U1 a drawer cabinet, which is designed to detect an acoustically voiced door opening request of a user. For this purpose, sound sensors are provided, wherein it is proposed that a sound sensor is connected by means of a spring-loaded sensor with the drawers, and another sound sensor is arranged in the rear region of the drawer cabinet. The distinction between useful signal and interference signal, the so-called signal discrimination, by means of evaluation of the transit time differences of the signals of both sensors. For a satisfactory operation here several spatially separated sensors are necessary, which is associated with a corresponding assembly, contacting and wiring.

Aus der WO 98/037425 ist ein Beschleunigungssensor mit einem Biegungsfühlerelement bekannt.From the WO 98/037425 For example, an acceleration sensor with a bend sensor element is known.

Aus der DE 20 2007 015 532 U1 ist ferner ein Neigungsensor bekannt, der einen Drei-Achsen-Beschleunigungssensor umfasst.From the DE 20 2007 015 532 U1 Further, a tilt sensor is known which comprises a three-axis acceleration sensor.

Wenngleich sich die aus dem Stand der Technik bekannten Haushaltgeräte im alltäglichen Einsatz bewährt haben, so besteht Verbesserungsbedarf, insbesondere hinsichtlich der Verwendungstauglichkeit.Although the household appliances known from the prior art have proven themselves in everyday use, there is a need for improvement, in particular with regard to the usability.

Es ist daher die Aufgabe der vorliegenden Erfindung, ein gattungsgemäßes Haushaltgerät dahingehend weiterzuentwickeln, dass ein Türöffnungswunsch eines Nutzers robuster detektiert wird.It is therefore the object of the present invention to develop a generic household appliance to the effect that a door opening request of a user is detected more robust.

Zur Lösung dieser Aufgabe wird mit der Erfindung ein gattungsgemäßes Haushaltgerät vorgeschlagen, bei welchem der Türöffnungssensor ein Drei-Achsen-Sensor ist.To solve this problem, a generic household appliance is proposed with the invention, in which the door opening sensor is a three-axis sensor.

Mit einem Drei-Achsen-Sensor ist dabei ein solcher Sensor gemeint, der in drei voneinander unabhängigen Raumrichtungen Signale misst. Es handelt sich also um einen dreidimensionalen messenden Sensor, wobei die drei Messrichtungen bevorzugter Weise orthogonal zueinander sind.With a three-axis sensor is meant such a sensor that measures signals in three independent spatial directions. It is therefore a three-dimensional measuring sensor, wherein the three measuring directions are preferably orthogonal to each other.

Der Kerngedanke der Erfindung ist es also, festzustellen, aus welcher Raumrichtung ein Signal auf das Haushaltgerät einwirkt. In vorteilhafter Weise ist es somit möglich, ein Nutzsignal, das heißt einen Türöffnungswunsch eines Nutzers, von Störsignalen zu unterscheiden. Wird beispielsweise ein Gegenstand oben auf das Haushaltgerät abgestellt, so wirkt ein Signal, insbesondere eine Schwingung, dominant von oben auf das Haushaltgerät ein. Erfindungsgemäß wird ein solches Signal allein schon aufgrund der Raumrichtung, aus der es auf das Haushaltgerät einwirkt, als Störsignal identifiziert. Weiterhin handelt es sich bei dem Drei-Achsen-Sensor um ein monolithisches Element, so dass mit der Erfindung in synergetischer Weise auch weniger Verkabelungs- und Montageaufwand anfällt, als dies bei der Verwendung von zwei oder mehr Sensoren aus dem Stand der Technik bekannt ist.The core idea of the invention is therefore to determine from which spatial direction a signal acts on the household appliance. Advantageously, it is thus possible to distinguish a useful signal, that is to say a door opening request of a user, from interference signals. If, for example, an object is placed on top of the household appliance, then a signal, in particular a vibration, acts domineurally on the household appliance from above. According to the invention, such a signal is already identified as an interference signal on the basis of the spatial direction from which it acts on the household appliance. Furthermore, the three-axis sensor is a monolithic element, so that the invention synergistically also reduces cabling and assembly costs than is known with the use of two or more prior art sensors.

Der Türöffnungssensor ist insbesondere ein Drei-Achsen-Beschleunigungssensor. Ein solcher Sensor misst Beschleunigungen, wobei eine Schwingung proportional zur Beschleunigung ist. Ein mögliches Messprinzip eines solchen Sensors ist jenes, wonach der Sensor kapazitiv die Auslenkungen einer Referenzmasse misst. Die Auslenkung der Referenzmasse ist dabei proportional zur Beschleunigung. Derartige Sensoren können als mikro-elektromechanisches-System (MEMS) ausgebildet sein. In vorteilhafter Weise lassen sich mit einem solchen Sensor Beschleunigungen präzise messen, bei gleichzeitig vollintegrierter Bauweise, geringen Kosten und kleinem Bauraum. Der Drei-Achsen-Sensor kann aber auch als Drei-Achsen-Schwingungssensor oder dergleichen ausgebildet sein.The door opening sensor is in particular a three-axis acceleration sensor. Such a sensor measures accelerations, where a vibration is proportional to the acceleration. One possible measuring principle of such a sensor is that according to which the sensor capacitively measures the deflections of a reference mass. The deflection of the reference mass is proportional to the acceleration. Such sensors can be designed as a micro-electro-mechanical system (MEMS). Advantageously, accelerations can be precisely measured with such a sensor, while at the same time having a fully integrated design, low cost and small space. The three-axis sensor can also be designed as a three-axis vibration sensor or the like.

Gemäß einer vorteilhaften Weiterbildung der Erfindung weist das Haushaltgerät eine Dekorplatte auf. Diese ist dabei mit der Außenseite, das heißt der bei geschlossener Tür für den Nutzer zugänglichen Seite der Tür, verbunden. Die Dekorplatte stellt somit eine Schnittstelle zwischen Nutzer und Haushaltgerät bereit. In vorteilhafter Weise ist der Türöffnungssensor mechanisch von der Dekorplatte entkoppelt. Dies bedeutet, dass keine unmittelbare Wirkverbindung zwischen Dekorplatte und Türöffnungssensor besteht. Der Türöffnungssensor ist also gerade nicht, wie aus dem Stand der Technik bekannte Sensoren, an der Dekorplatte befestigt, sondern vielmehr räumlich beabstandet von dieser. In vorteilhafter Weise werden somit auf die Dekorplatte einwirkende Signale, beispielsweise Körperschall, nicht unmittelbar auf den Türöffnungssensor übertragen.According to an advantageous embodiment of the invention, the household appliance on a decorative plate. This is connected to the outside, that is the door of the door accessible to the user when the door is closed. The decorative plate thus provides an interface between the user and the household appliance. Advantageously, the door opening sensor is mechanically decoupled from the decorative panel. This means that there is no direct operative connection between decorative panel and door opening sensor. The door opening sensor is therefore not, as known from the prior art sensors attached to the decorative panel, but rather spaced from this spatially. Advantageously, thus acting on the decorative panel signals, such as structure-borne noise, not directly transmitted to the door opening sensor.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist die Dekorplatte mittels Befestigungsmitteln mit der Tür verbunden. Die Befestigungsmittel können dabei insbesondere als Haken, Stifte, Schrauben oder dergleichen ausgebildet sein. In vorteilhafter Weise überträgt sich ein auf die Dekorplatte einwirkendes Signal, insbesondere ein Klopfsignal des Nutzers, über die Befestigungsmittel auf die Tür. Innerhalb der Tür ist der Türöffnungssensor angeordnet, ohne eine direkte Wirkverbindung zu anderen Komponenten der Tür. Der Türöffnungssensor kann dabei insbesondere von einer Elektronik getragen sein.According to an advantageous embodiment of the invention, the decorative plate is connected by means of fastening means with the door. The fastening means can be designed in particular as hooks, pins, screws or the like. In an advantageous manner, a signal acting on the decorative panel, in particular a knocking signal of the user, is transmitted to the door via the fastening means. Inside the door, the door opening sensor is arranged, without a direct operative connection to other components of the door. The door opening sensor can be carried in particular by an electronics.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist die Dekorplatte aus Metall, insbesondere Edelstahl, gebildet. Dabei kann auch vorgesehen sein, dass die Dekorplatte als Hohlkörper ausgeführt ist. Die erfindungsgemäße Türöffnungssensor-Anordnung erlaubt es nämlich auch diese Dekorplatten zu verwenden, da die Sensorsignale hierdurch nicht beeinträchtigt werden. Dies war jedoch bei aus dem Stand der Technik bekannten Sensoren, insbesondere kapazitiven Sensoren und/oder Körperschallsensoren der Fall. In vorteilhafter Weise können erfindungsgemäß also Dekorplatten aus Metall, insbesondere Edelstahl, eingesetzt werden, was auch vielfach von Kunden gewünscht wird.According to an advantageous embodiment of the invention, the decorative plate is made of metal, in particular stainless steel. It can also be provided that the decorative plate is designed as a hollow body. The door opening sensor arrangement according to the invention allows namely to use these decorative panels, since the sensor signals are not affected thereby. However, this was the case with sensors known from the prior art, in particular capacitive sensors and / or structure-borne sound sensors. Advantageously, according to the invention, decor panels made of metal, in particular stainless steel, can be used, which is often desired by customers.

In vorteilhafter Weise ergibt sich ein vergleichsweise einfacher Aufbau des Gesamtsystems, da nur ein Türöffnungssensor eingesetzt wird, welcher gleichzeitig aufgrund der Mehrachsen-Messweise für eine verbesserte Diskriminierung von Nutzsignal und Störsignal dient. Weiterhin vorteilhaft ist es, dass der Türöffnungssensor mit geringem Aufwand montierbar ist, da dieser direkt auf einer Steuerungselektronik positionierbar ist. Bei gleichzeitig kostengünstigerer Montage resultiert ein funktionssichereres System. In vorteilhafter Weise ist keine zusätzliche Verdrahtung in Form von Signalleitungen für den Türöffnungssensor notwendig. Für die Inbetriebnahme des Türöffnungssensors sind keine Modifikationen an Geschirrspüler und/oder an peripheren Komponenten notwendig. Mit der Erfindung ist somit ein montagefreundliches System geschaffen.Advantageously, results in a comparatively simple construction of the overall system, since only a door opening sensor is used, which is used at the same time due to the multi-axis measurement method for improved discrimination of useful signal and noise. It is also advantageous that the door opening sensor can be mounted with little effort, since it can be positioned directly on a control electronics. At the same time cheaper installation results in a more reliable system. Advantageously, no additional wiring in the form of signal lines for the door opening sensor is necessary. For the commissioning of the door opening sensor are no modifications to the dishwasher and / or on peripheral components necessary. With the invention thus a montage friendly system is created.

In vorteilhafter Weise lässt sich die Tür mittels Klopfens intuitiv öffnen, da es ein Nutzer üblicherweise gewöhnt ist, beispielsweise beim Eintreten in einen Raum ebenfalls an die Tür zu klopfen. Weiterhin ist ein hochwertiger optischer Eindruck des Haushaltgeräts gewährleistet, da ein Nutzer gegen das Haushaltgerät klopft, im Gegensatz zu einem Drücken, wie es aus dem Stand der Technik bekannt ist, bei welchem beispielsweise Fingerabdrücke auf der Oberfläche des Haushaltgeräts entstehen.Advantageously, the door can be intuitively opened by knocking, since a user is usually used to knocking on the door, for example, when entering a room. Furthermore, a high-quality visual impression of the household appliance is ensured because a user knocks on the appliance, in contrast to a pressure, as is known in the prior art, in which, for example, fingerprints on the surface of the appliance arise.

Zur Lösung der Aufgabe der Erfindung wird verfahrensseitig ein Verfahren zum Betrieb eines Türöffnungsmechanismus für ein Haushaltgerät, insbesondere grifflose Geschirrspülmaschine oder griffloses Kühlgerät, vorgeschlagen, aufweisend die Verfahrensschritte: Messen eines ersten Signals mittels eines Türöffnungssensors; Messen eines zweiten Signals mittels des Türöffnungssensors; Messen eines dritten Signals mittels des Türöffnungssensors; und ermitteln einer Raumrichtung, aus welcher eine Signalquelle resultiert, durch Berechnen eines Gesamtsignals der drei Messsignale des Türöffnungssensors.In order to achieve the object of the invention, a method for operating a door opening mechanism for a domestic appliance, in particular a handle-free dishwasher or handle-free refrigerating appliance, is proposed on the method side, comprising the method steps: measuring a first signal by means of a door opening sensor; Measuring a second signal by means of the door opening sensor; Measuring a third signal by means of the door opening sensor; and determine a spatial direction from which a signal source results by calculating a total signal of the three measurement signals of the door opening sensor.

Erfindungsgemäß werden also Signale, insbesondere Beschleunigungen oder Schwingungen aus allen drei Raumrichtungen durch den Türöffnungssensor gemessen. Mittels datenverarbeitungstechnischer Mittel, insbesondere einem Steuerrechner, werden die drei Signale des Türöffnungssensors eingelesen und/oder bewertet. Dabei kann eine Raumrichtung ermittelt werden, aus der ein Signal auf den Sensor einwirkt. In vorteilhafter Weise lässt sich somit feststellen, ob ein Signal senkrecht auf die Türoberfläche einwirkt, und somit ein Nutzsignal vorliegt, oder ein Signal aus einer anderen Raumrichtung, beispielsweise durch das Abstellen eines Gegenstands auf das Haushaltgerät, vorliegt, und damit ein Störsignal vorliegt. Bei Vorliegen eines Nutzsignals, und damit eines akustisch geäußerten Türöffnungswunsches eines Nutzers, kann mittels einer Elektronik der Öffnungsantrieb ausgelöst werden, infolge dessen die Tür aus einer geschlossenen Position in eine zumindest teilweise geöffnete Position bewegt wird.According to the invention thus signals, in particular accelerations or vibrations from all three spatial directions are measured by the door opening sensor. By means of data processing means, in particular a control computer, the three signals of the door opening sensor are read in and / or evaluated. In this case, a spatial direction can be determined, from which a signal acts on the sensor. Advantageously, it can thus be determined whether a signal acts perpendicular to the door surface, and thus a useful signal is present, or a signal from another spatial direction, for example by placing an object on the household appliance, is present, and thus an interference signal is present. In the presence of a useful signal, and thus an acoustically voiced door opening request of a user, the opening drive can be triggered by means of an electronic system, as a result of which the door is moved from a closed position into an at least partially open position.

Gemäß einer vorteilhaften Weiterbildung der Erfindung werden die Signale des Türöffnungssensors gefiltert, so dass nur ein begrenztes Frequenzband bereitgestellt wird. Es kann somit ein Frequenzband definiert werden, in welchem Nutzsignale, das heißt Öffnungswünsche eines Nutzers, erwartet werden. Signale, die außerhalb dieses Frequenzbands liegen, werden entsprechend weggefiltert, so dass ein Auslösen des Öffnungsantriebs bei diesen Frequenzen ausgeschlossen ist. Ein derartiges Filter kann insbesondere durch ein Bandpassfilter gebildet sein.According to an advantageous embodiment of the invention, the signals of the door opening sensor are filtered, so that only a limited frequency band is provided. It can thus be defined a frequency band in which useful signals, ie opening requests of a user, are expected. Signals that are outside of this frequency band are correspondingly filtered away, so that triggering of the opening drive at these frequencies is excluded. Such a filter can be formed in particular by a bandpass filter.

Gemäß einer vorteilhaften Weiterbildung der Erfindung kann eine Spektralanalyse der drei Signale des Türöffnungssensors berechnet und/oder ausgewertet werden. In vorteilhafter Weise lässt sich somit feststellen, ob bei einer bestimmten Signalfrequenz, insbesondere der erwarteten Frequenz eines Klopfsignals, eine entsprechende Signalamplitude vorliegt. Liegt eine solche vor, wird in der Folge eine Türöffnung ausgelöst. In vorteilhafter Weise bewirken somit nur Nutzsignale eine Türöffnung.According to an advantageous development of the invention, a spectral analysis of the three signals of the door opening sensor can be calculated and / or evaluated. In an advantageous manner, it is thus possible to determine whether a corresponding signal amplitude is present at a specific signal frequency, in particular the expected frequency of a knock signal. If such is present, a door opening will be triggered as a result. Advantageously, thus only useful signals cause a door opening.

Gemäß einer vorteilhaften Weiterbildung der Erfindung werden Beschleunigungsintegrale der drei Signale des Türöffnungssensors berechnet und/oder ausgewertet. In vorteilhafter Weise werden dadurch die Beschleunigungssignale gefiltert und damit unerwünschte Frequenzbereiche abgeschnitten. Somit lassen sich Nutzsignale und Störsignale zuverlässiger diskriminieren und ein sicherer Betrieb des Haushaltgeräts gewährleisten.According to an advantageous development of the invention, acceleration integrals of the three signals of the door opening sensor are calculated and / or evaluated. Advantageously, the acceleration signals are thereby filtered and thus unwanted frequency ranges cut off. Thus, useful signals and interference signals can be discriminated more reliably and ensure safe operation of the household appliance.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den nachfolgenden Ausführungsbeispielen. Dabei zeigen:

Figur 1
eine perspektivische Explosionsdarstellung einer Geschirrspülmaschine mit Tür,
Figur 2
eine Tür der Geschirrspülmaschine im Querschnitt mit verschiedenen Anordnungen des Türöffnungssensors (2a, 2b) und
Figur 3
einen Signalverlauf des Türöffnungssensors.
Further advantages and features of the invention will become apparent from the following embodiments. Showing:
FIG. 1
an exploded perspective view of a dishwasher with door,
FIG. 2
a door of the dishwasher in cross-section with various arrangements of the door opening sensor (2a, 2b) and
FIG. 3
a waveform of the door opening sensor.

Die Figur 1 zeigt einen grifflosen, vollintegrierten Geschirrspüler 10, aufweisend einen Spülraum 107 und eine Tür 1. Die Tür 1 umfasst ein Türinnenblech 2, ein Türaußenblech 3, und eine Blende 17. Innerhalb der Blende 17 ist eine Gerätesteuerung 6 angeordnet. Die Gerätesteuerung 6 umfasst eine Steuerplatine 14, wobei die Steuerplatine 14 einen Türöffnungssensor 9 trägt. Die Tür 1 umfasst ferner eine Dekorplatte 4, welche mittels Befestigungsmitteln 12 mit der Tür 1 verbunden ist. Der Türöffnungssensor 9 ist also innerhalb der Tür 1 angeordnet, ohne direkte Wirkverbindung zu den anderen Komponenten der Tür 1. Insbesondere besteht keine direkte Wirkverbindung zwischen Dekorplatte 4 und Türöffnungssensor 9. Die Dekorplatte 4 verkleidet die Tür 1 vollständig.The FIG. 1 shows a handle-less, fully integrated dishwasher 10, comprising a Spülraum 107 and a door 1. The door 1 comprises a door inner panel 2, a door outer panel 3, and a diaphragm 17. Within the panel 17, a device control 6 is arranged. The device controller 6 comprises a control board 14, wherein the control board 14 carries a door opening sensor 9. The door 1 further comprises a decorative plate 4, which is connected by means of fastening means 12 with the door 1. The door opening sensor 9 is therefore arranged within the door 1, without direct operative connection to the other components of the door 1. In particular, there is no direct operative connection between decorative panel 4 and door opening sensor 9. The decorative panel 4 completely covers the door 1.

Sofern die Tür 1 geschlossen ist, das heißt die Tür 1 den Spülraum 107 der Geschirrspülmaschine 10 fluiddicht verschließt, geht eine Türöffnung wie folgt von statten:If the door 1 is closed, that is, the door 1 closes the washing compartment 107 of the dishwasher 10 in a fluid-tight manner, a door opening is made as follows:

Ein Nutzer (nicht dargestellt) äußert einen Türöffnungswunsch mittels Klopfens S gegen die Dekorplatte 4. Das Klopfen S ist dabei in der Figur 1 in Richtung 18 angedeutet, trifft also im Wesentlichen senkrecht auf die Türoberfläche. Ein Türöffnungswunsch eines Nutzers ist somit insbesondere ein akustisch geäußerter Türöffnungswunsch des Nutzers. Das Klopfsignal S wird von der Dekorplatte 4 über die Befestigungsmittel 12 auf die Tür übertragen. Die Tür umfasst dabei die bereits beschriebenen Komponenten, wobei Türaußenblech 3, Türinnenblech 2 und Blende 17 jeweils miteinander verbunden sein können. Das Klopfsignal S wird somit auch auf die Blende 17, und damit auch auf die Gerätesteuerung 6, die Steuerplatine 14 und den Türöffnungssensor 9 übertragen. Der Türöffnungssensor 9 ist dabei ein Drei-Achsen-Sensor, insbesondere ein Drei-Achsen-Beschleunigungssensor. Dieser misst Signale in den in der Figur 1 dargestellten drei orthogonalen Raumrichtungen X, Y, Z.A user (not shown) expresses a door opening request by knocking S against the decorative plate 4. The knocking S is in the FIG. 1 indicated in the direction 18, thus applies substantially perpendicular to the door surface. A door opening request of a user is thus in particular an acoustically voiced door opening request of the user. The knock signal S is transmitted from the decorative plate 4 via the fastening means 12 to the door. The Door comprises the components already described, wherein door outer panel 3, door inner panel 2 and panel 17 can each be connected to each other. The knock signal S is thus also transmitted to the diaphragm 17, and thus also to the device control 6, the control board 14 and the door opening sensor 9. The door opening sensor 9 is a three-axis sensor, in particular a three-axis acceleration sensor. This measures signals in the in the FIG. 1 illustrated three orthogonal spatial directions X, Y, Z.

Innerhalb der Gerätesteuerung 6 werden die drei Signale des Türöffnungssensors 9 mittels eines Steuerrechners (nicht dargestellt) eingelesen und ausgewertet. Bei Vorliegen eines Klopfsignals 18 ist ein beispielhafter Signalverlauf der drei Achsen des Türöffnungssensors 9 in Figur 3 dargestellt. Dabei misst jeweils eine Achse ein Signal in einer der Raumrichtungen X, Y, Z. Der jeweilige Signalpegel ist über die Zeit aufgetragen. Ein gestrichen dargestellter Wert L bildet einen Schwellwert, dessen Übertreten durch die Gerätesteuerung 6 ausgewertet wird. Im vorliegenden Beispiel wird in der Raumrichtung X der Schwellwert L übertreten. In diesem Fall stellt die Raumrichtung X diejenige Raumrichtung 18 dar, aus welcher das Klopfsignal S, das heißt das Nutzsignal, erwartet wird. Durch das Überschreiten des Schwellwertes L in Raumrichtung X ist somit ein Nutzsignal gegeben, welches einen Türöffnungswunsch eines Nutzers darstellt. In der Folge löst die Gerätesteuerung 6 den Öffnungsantrieb (nicht dargestellt) der Geschirrspülmaschine 10 aus, und die Tür 1 wird motorisch geöffnet.Within the device control 6, the three signals of the door opening sensor 9 by means of a control computer (not shown) are read and evaluated. In the presence of a knock signal 18 is an exemplary waveform of the three axes of the door opening sensor 9 in FIG. 3 shown. One axis in each case measures a signal in one of the spatial directions X, Y, Z. The respective signal level is plotted over time. A canceled value L forms a threshold whose violation is evaluated by the device control 6. In the present example, the threshold value L is exceeded in the spatial direction X. In this case, the spatial direction X represents that spatial direction 18 from which the knocking signal S, that is to say the useful signal, is expected. By exceeding the threshold value L in the spatial direction X, a useful signal is thus given which represents a door opening request of a user. As a result, the device controller 6 triggers the opening drive (not shown) of the dishwasher 10, and the door 1 is opened by a motor.

Würde bei den in Figur 3 dargestellten Messsignalen beispielsweise der Schwellwert L in Raumrichtung Z überschritten, so würde dies von der Gerätesteuerung 6 als Störsignal bewertet. Ein Signalausschlag in Raumrichtung Z kann beispielsweise aus dem Abstellen eines Gegenstands auf die Geschirrspülmaschine 10 resultieren. In vorteilhafter Weise ist es durch den Einsatz des Drei-Achsen-Sensors 9 möglich, je nach Stärke des Signals in den drei Raumrichtungen X, Y, Z ein Nutzsignal von einem Störsignal robust zu unterscheiden.Would at the in FIG. 3 For example, the threshold value L in the direction of the space Z is exceeded, as would be evaluated by the device controller 6 as an interference signal. A signal excursion in the direction Z of space may result, for example, from placing an object on the dishwasher 10. Advantageously, it is possible by the use of the three-axis sensor 9, depending on the strength of the signal in the three spatial directions X, Y, Z to distinguish a useful signal of a noise robust.

Die Figuren 2a und 2b zeigen zwei verschiedene Ausführungsvarianten der erfindungsgemäßen Tür 1 der Geschirrspülmaschine 10. In Figur 2a ist der vorstehend bereits beschriebene Fall zu sehen, bei dem der Türöffnungssensor 9 von der Steuerplatine 14 getragen wird, welche innerhalb der Gerätesteuerung 6 in einer Blende 17 angeordnet ist. Weiter dargestellt sind Anzeige- und Bedienelemente 8, mittels welcher der Nutzer beispielsweise ein Spülprogramm auswählen kann. Die Anzeige- und Bedienelemente 8 sind mit einer Anzeige- und Bediensteuerung 13 verbunden. Figur 2b zeigt nun eine alternative Anordnung des Türöffnungssensors 9. Der Türöffnungssensor 9 wird von einer Anzeige- und Bedienplatine 15 getragen, welche innerhalb der Anzeige- und Bediensteuerung 13 angeordnet ist. Andere Anordnungen des Türöffnungssensors 9 sind ebenfalls denkbar. Hierbei ist zu beachten, dass der Türöffnungssensor 9 je nach Anordnung innerhalb der Tür 1 in einer unterschiedlichen Messachse die Nutzsignale misst. Es ist also je nach Anordnung des Türöffnungssensors 9 eine Kalibrierung durchzuführen, wodurch die Messachse des Nutzsignals bestimmt wird.The FIGS. 2a and 2 B show two different embodiments of the door 1 according to the invention the dishwasher 10. In FIG. 2a is the case already described above, in which the door opening sensor 9 is supported by the control board 14, which is disposed within the device control 6 in a diaphragm 17. Also shown are display and control elements 8, by means of which the user can select, for example, a washing program. The display and control elements 8 are connected to a display and operation control 13. FIG. 2b now shows an alternative arrangement of the door opening sensor 9. The door opening sensor 9 is supported by a display and control board 15 which is disposed within the display and operation control 13. Other arrangements of the door opening sensor 9 are also conceivable. It should be noted that the door opening sensor 9 depending on the arrangement within the door 1 measures the useful signals in a different measuring axis. It is therefore to perform a calibration depending on the arrangement of the door opening sensor 9, whereby the measuring axis of the useful signal is determined.

Claims (10)

Haushaltgerät, insbesondere grifflose Geschirrspülmaschine oder griffloses Kühlgerät, mit einer Tür (1), wobei ein Öffnungsantrieb vorgesehen ist, um die Tür (1) aus einer geschlossenen Position in eine zumindest teilweise geöffnete Position zu bewegen, wobei ein Türöffnungssensor (9) zum Erkennen eines akustisch geäußerten Türöffnungswunsches eines Nutzers vorgesehen ist, wobei der Türöffnungssensor (9) mit der Tür (1) gekoppelt ist,
dadurch gekennzeichnet,
dass der Türöffnungssensor (9) ein Drei-Achsen-Sensor ist.Domestic appliance, in particular handle-free dishwasher or handle-free refrigerator, with a door (1), wherein an opening drive is provided to move the door (1) from a closed position to an at least partially open position, wherein a door opening sensor (9) for detecting a acoustically voiced door opening request of a user is provided, wherein the door opening sensor (9) is coupled to the door (1),
characterized,
that the door opening sensor (9) is a three-axis sensor. Haushaltgerät nach Anspruch 1,
gekennzeichnet durch eine Dekorplatte (4), wobei der Türöffnungssensor (9) mechanisch von der Dekorplatte (4) entkoppelt ist.Household appliance according to claim 1,
characterized by a decorative plate (4), wherein the door opening sensor (9) is mechanically decoupled from the decorative plate (4). Haushaltgerät nach Anspruch 2,
dadurch gekennzeichnet,
dass die Dekorplatte (4) mittels Befestigungsmitteln (12) mit der Tür verbunden ist.Household appliance according to claim 2,
characterized,
that the decorative plate (4) is connected by means of fastening means (12) with the door. Haushaltgerät nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
dass die Dekorplatte (4) aus Metall gebildet ist.Domestic appliance according to claim 2 or 3,
characterized,
that the decorative plate (4) is formed of metal. Haushaltgerät nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
dass der Türöffnungssensor (9) ein Drei-Achsen-Beschleunigungssensor ist.Domestic appliance according to one of the preceding claims,
characterized,
that the door opening sensor (9) is a three-axis acceleration sensor. Haushaltgerät nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
dass der Türöffnungssensor (9) ein Drei-Achsen-Schwingungssensor ist.Domestic appliance according to one of the preceding claims,
characterized,
that the door opening sensor (9) is a three-axis accelerometer. Verfahren zum Betrieb eines Türöffnungsmechanismus für ein Haushaltgerät, insbesondere grifflose Geschirrspülmaschine oder griffloses Kühlgerät,
aufweisend die Verfahrensschritte: - Messen eines ersten Signals mittels eines Türöffnungssensors (9); - Messen eines zweiten Signals mittels des Türöffnungssensors (9); - Messen eines dritten Signals mittels des Türöffnungssensors (9); und - Ermitteln einer Raumrichtung, aus welcher eine Signalquelle resultiert, durch Berechnen eines Gesamtsignals der drei Messsignale des Türöffnungssensors (9). Method for operating a door opening mechanism for a domestic appliance, in particular a handle-free dishwasher or a handle-free refrigerator,
comprising the method steps: - Measuring a first signal by means of a door opening sensor (9); - Measuring a second signal by means of the door opening sensor (9); - Measuring a third signal by means of the door opening sensor (9); and - Determining a spatial direction, from which a signal source results, by calculating a total signal of the three measurement signals of the door opening sensor (9). Verfahren nach Anspruch 7,
gekennzeichnet durch den Verfahrensschritt: - Filtern der Signale des Türöffnungssensors (9), so dass nur ein begrenztes Frequenzband bereitgestellt wird. Method according to claim 7,
characterized by the method step: - Filtering the signals of the door opening sensor (9), so that only a limited frequency band is provided. Verfahren nach einem der Ansprüche 7 oder 8,
gekennzeichnet durch den Verfahrensschritt: - Berechnen und/oder Auswerten einer Spektralanalyse der drei Signale des Türöffnungssensors (9). Method according to one of claims 7 or 8,
characterized by the method step: - Calculating and / or evaluating a spectral analysis of the three signals of the door opening sensor (9). Verfahren nach einem der Ansprüche 7 bis 9,
gekennzeichnet durch den Verfahrensschritt: - Berechnen und/oder Auswerten der Beschleunigungsintegrale der drei Signale des Türöffnungssensors (9). Method according to one of claims 7 to 9,
characterized by the method step: Calculating and / or evaluating the acceleration integrals of the three signals of the door opening sensor (9).
EP11401567.0A 2010-09-08 2011-08-10 Household device, in particular dishwasher without a handle Active EP2428153B1 (en)

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US20140109488A1 (en) 2014-04-24
US8758524B2 (en) 2014-06-24
US20120055091A1 (en) 2012-03-08
DE102010037397A1 (en) 2012-03-08
US9267319B2 (en) 2016-02-23
EP2428153B1 (en) 2014-07-02
PL2428153T3 (en) 2014-10-31
ES2493091T3 (en) 2014-09-11

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