EP2434936B1 - Machine à laver la vaisselle - Google Patents

Machine à laver la vaisselle Download PDF

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Publication number
EP2434936B1
EP2434936B1 EP10717130.8A EP10717130A EP2434936B1 EP 2434936 B1 EP2434936 B1 EP 2434936B1 EP 10717130 A EP10717130 A EP 10717130A EP 2434936 B1 EP2434936 B1 EP 2434936B1
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EP
European Patent Office
Prior art keywords
dishes
dishwasher according
detecting
sensor
evaluation module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10717130.8A
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German (de)
English (en)
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EP2434936A2 (fr
Inventor
Michael Fauth
Helmut Jerg
Kai Paintner
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority to PL10717130T priority Critical patent/PL2434936T3/pl
Publication of EP2434936A2 publication Critical patent/EP2434936A2/fr
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4295—Arrangements for detecting or measuring the condition of the crockery or tableware, e.g. nature or quantity
    • 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
    • A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • 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
    • A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
    • 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
    • A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions

Definitions

  • the present invention relates to a dishwasher in the form of a domestic dishwasher with a washing container for receiving dishes during a wash program with a dish detection device for detecting the introduced into the washing crockery and with a control device for controlling the course of the wash program depending on the detected crockery.
  • Common household dishwashers include a variety of components, such as pumps, heaters, valves, water switches, and detergent dispensers, which, in conjunction, facilitate cleaning dishes introduced into the wash tub.
  • dishwashers have an electrical or an electronic control device which automatically controls the components of the dishwasher according to a previously designed washing program.
  • the design of the washing program has a decisive influence on the efficiency of the dishwasher, which results from a comparison of achieved cleaning and drying effect on the one hand and the required use of energy, water, cleaning agents and cleaning aids on the other.
  • Conventional control devices are designed so that the sequence of a washing program is fixed. This means that the wash program, after it has been started by an operator, always runs in the same way.
  • the dishwasher In order to take into account the fact that the dishwasher can be loaded differently in the practical use of a rinse cycle to rinse cycle, it has long been common to deposit in the control device various rinse programs. For example, a short program for only slightly soiled dishes, a normal program for normally soiled dishes and an intensive program for heavily soiled dishes may be provided. The selection of the appropriate program is left to the operator. However, once one of the available wash programs has been selected, the wash cycle is performed according to the pattern prescribed by the selected wash program.
  • Known dish detection devices can be divided into two groups.
  • a first group makes it possible to estimate the total amount of dishes introduced into the washing container.
  • sensors are used that can work according to different physical principles. For example, it is known to provide for detecting the total amount of dishes sensors for determining the weight of the dishes directly in or on the washing.
  • a second known group of dishwashing devices is provided for determining the type of dishes to be washed. For example, it has been proposed to detect the outlines of the dishes by means of a light barrier when loading the dishwasher, so as to distinguish, for example, plates from pots.
  • Object of the present invention is to increase the efficiency of a generic dishwasher.
  • the object is achieved in a dishwasher of the type mentioned above in that the dish detection device has a plurality of evaluation modules, which is designed in each case for detecting a similar type of crockery based on the signals of at least one sensor and / or based on at least one control parameter of the control device ,
  • An evaluation module here means a part of the dish detection device which is designed to evaluate the signals of at least one sensor, the evaluation allowing at least one qualitative statement as to whether a type of dish consisting of a specific material is present in the washing compartment. Preferably, such an evaluation module also allows a quantitative statement regarding the amount of the respective type of dish.
  • Each evaluation module directly evaluates the signals of one or more sensors according to a pre-determined algorithm, so as to accurately detect a type of dish.
  • the respective algorithm is designed to detect features of the signals of a sensor, which are specific to a particular type of dish.
  • the evaluation modules operate independently of each other, so that the evaluation of the signals with respect to a type of dish is independent of the evaluation of the signals with respect to another type of dish. By means of an evaluation module, therefore, the presence of a specific type of dish is detected immediately and not merely the ratio of the proportions of two different kinds of dishes is determined. As a result, a particularly accurate detection of the different types of dishes is possible.
  • the dish detection device and its evaluation modules are thus connected to the control device of the dishwashing machine in that the information determined by the evaluation modules can be used by the control device.
  • At least one control parameter of the control device for detecting a type of crockery consisting of a similar material may also be used by the dish detection device.
  • a control parameter may be, for example, an electric current drawn by the circulating pump as a function of a load acting on it.
  • an indication or identification measure for the particular type of dish present can be determined by at least one dish detection device directly and / or indirectly.
  • the dish detection device can be provided as a separate structural unit. Alternatively, it may be part or all of the control device.
  • the control device in particular an adjustment of the flow of a selected wash program to the material of the introduced into the washing utensils or dishes.
  • the dishes located in the washing container consist of a comparatively easy-to-clean material, for example, the rinsing pressure and / or the temperature of the rinsing water can be reduced during the execution of a rinsing program.
  • the required cleaning effect can be maintained. In this way, a significant improvement in the efficiency of the dishwasher can be achieved.
  • Another advantage of the dishwasher according to the invention is in particular that the energy required to dry the dishes is considerably reduced. This results from the fact that different materials show a different drying behavior.
  • the dishwasher according to the invention allows, in particular, an adaptation of the washing program to the resistance of the dishes respectively located in the dishware. For example, if temperature-sensitive materials are detected, the rinse water temperature can be automatically lowered. In this way, a gentle cleaning of the dishes is possible.
  • one of the evaluation modules is designed for detecting plastic utensils.
  • Plastic dishes generally have the property that crockery-typical contaminants adhere only relatively loosely. However, plastic crockery dries badly compared to other types of crockery. The detection of plastic dishes and a subsequent adjustment of the course of the wash program therefore allows a significant increase in the efficiency of the dishwasher.
  • one of the evaluation modules is designed for detecting metal utensils. Contaminations adhere to metal dishes comparatively strong. This is especially true for metalware which is heated when used as intended, such as pots and pans. The detection of metalware and a subsequent adjustment of the washing program ensures that even metalware is safely freed from impurities, the increased effort, however, is only operated when it is actually required. In this way, there is a significant increase in the efficiency of the dishwasher.
  • one of the evaluation modules is designed for detecting glassware.
  • Glassware is mainly only slightly dirty, with dirt adhering only relatively loose.
  • the detection of glassware and the subsequent adjustment of the flow of the wash program thus allows a further increase in efficiency of the dishwasher.
  • the washing program By adapting the washing program to a complete glassware loading of the washing container and damage to the relatively sensitive glassware can be avoided.
  • the washing out of ions from the glassware which is also known by the term "glass corrosion" can be avoided by adapting the rinsing parameters.
  • the dish detection device comprises a plurality of said evaluation modules, the result is a combinatorial effect which allows a particularly precise adaptation of the wash program to the loading of the wash tub.
  • the dish detection device is an evaluation module for detecting plastic dishes, an evaluation module for detecting metal dishes and an evaluation module for detecting Includes glassware, the occurring in the practical operation of a dishwasher mixing loads can be detected in terms of their main types of relevant dishes. This allows an optimal adaptation of the washing program to a large part of the loading compositions occurring in practical operation. The rinsing parameters can then be specifically adapted to the particular mixing loads present.
  • the drying section of the washing program can be adapted to it, although this would not actually be required for metal dishes and glassware.
  • the dish detection device comprises an evaluation module for (preferably quantitative) detection of the total amount of dishes in the washing container on the basis of the signals of at least one sensor.
  • an evaluation module for recording the total quantity enables a plausibility check of the control-room-specific evaluation modules; on the other hand, the amount of non-individually recorded types of dishes can be recorded by differentiating the total quantity and the quantities of individually recorded types of dishes. This allows a particularly good adaptation of the washing program to the actually existing loading composition and thus a particularly high increase in the efficiency of the dishwasher.
  • the dish detection device has at least one sound transducer for detecting a noise, which is caused by rinsing water sprayed on the dishes.
  • the sound transducer is preferably connected to at least one of the evaluation modules.
  • the respective evaluation module is for analyzing the noise in particular designed such that according to a predetermined noise evaluation algorithm, the respective type of dish or the entire dishes can be detected.
  • the jets of spray water impinging on the dishes during operation of the dishwasher produce noises whose properties depend, inter alia, on the material of which the dishes are made.
  • These noises are converted with a sound transducer into a signal, for example into an electrical signal, and fed to an evaluation module.
  • the evaluation module analyzes this signal for features which are characteristic of a specific material.
  • Such a trained dish detection device allows the detection of individual types of dishes with high accuracy, since different types of dishes lead to clearly identifiable noise patterns.
  • a rotating during the wash program spray arm is provided for spraying the dishes with rinse water, wherein the respectively connected to the transducer Ausncemodul is designed for analyzing the noise over at least one rotation of the spray arm. This ensures that the entire washing container is examined for the occurrence of a particular type of dish.
  • the evaluation module connected to the sound transducer is designed to analyze the sound over a large number of rotations of the spray arm. Accumulation of the signal over a plurality of rotations of the spray arm increases the accuracy of detection by improving the signal perturbation ratio. In particular, a negative influence of extraneous noise can be significantly reduced.
  • the respective evaluation module connected to the sound transducer is designed to analyze the frequencies contained in the noise. In comparison to evaluation modules, which analyze only the intensity of the sound, there is a much more precise selectivity with regard to the different types of dishes.
  • the evaluation module for detecting plastic crockery and / or the evaluation module for detecting Metal harness connected to the sound transducer.
  • Straight plastic dishes and metal utensils produce characteristic noises or noise.
  • the sound transducer is therefore particularly well suited for the detection of plastic dishes and / or metal dishes.
  • the sound transducer is arranged in the region of a lower crockery basket.
  • Conventional dishwashers have a lower and an upper dish rack.
  • plastic dishes such as mixing bowls made of plastic
  • metal dishes such as pots and pans, arranged mainly in the lower dish rack. Therefore, plastic dishes and metalware can be detected particularly well when the transducer is located in the area of this lower crockery basket.
  • the dish detection device has at least one light source for illuminating the dishes and at least one camera for imagewise detection of light reflections occurring on the dishes, wherein the respective camera is connected to at least one of the evaluation modules, wherein the respective evaluation module for analyzing the light reflections is designed such that, according to a given light evaluation algorithm, the respective type of crockery or the entire crockery can be detected.
  • the light source may include, for example, light-emitting diodes or bulbs.
  • the camera can be an electronic camera, for example a C-MOS camera. The camera can be equipped with a wide-angle lens to ensure the widest possible coverage.
  • the detection of a type of dish with such a dish detection device based on the fact that occur on the surfaces of different materials characteristic light reflections.
  • Light reflections also known as highlights or highlights, are locally limited reflections of light, which are much brighter than the background.
  • the light reflections generated by the respective light source and detected by the respective camera are analyzed by means of a suitable light evaluation algorithm, wherein a specific type of dishware or the total amount of dishes is detected on the basis of the properties of the light reflections.
  • the respectively associated with the camera evaluation module for determining the number and / or size of the light reflections arising on the dishes is formed.
  • Such an evaluation of the light reflexes can be carried out with a comparatively simple light evaluation algorithm.
  • the respective evaluation module connected to the camera is designed to determine the ratio of the brightness of the light reflections to the brightness of its immediate background. This ratio of brightness is characteristic of many materials, so that certain types of dishes can be distinguished with great certainty.
  • the respectively connected to the camera evaluation module for determining the brightness distribution is formed within the light reflections.
  • the alternative or additional determination of the brightness distribution within the light reflections further improves the distinction between different types of dishes.
  • the camera is connected to the evaluation module for detecting the glassware. Especially on surfaces made of glass especially high-contrast light reflections. This glassware can be detected very well by means of an evaluation of the images supplied by the camera.
  • the camera is arranged in the region of an upper dish rack of the dishwasher.
  • Glassware is mainly introduced into an upper dish rack of a dishwasher, so that a camera arranged in this way can easily detect the essential glass content of a dishwashing load.
  • the evaluation module for detecting the total amount of dishes with at least one sensor for detecting the connected to the dishes adhering amount of rinse water. This is based on the consideration that the total amount of dishes located in the washing container with the total amount of rinse water adhering to the dishes during a rinse corresponds.
  • the amount of adherent rinse water is substantially independent of the material of the harness and can be detected with relatively simple sensors.
  • the sensor for detecting the adhering to the dishes amount of rinse water is designed as a sensor for monitoring the rotational speed of a circulating pump.
  • a defined amount of water is introduced into the washing container at the beginning of a section of a washing program. This accumulates due to gravity in a lower portion of the washing, for example, in a designated collecting pot.
  • a circulation pump is provided, for example, which removes the rinse water from the collecting pot and sprays it via a spray into the washing.
  • the rinse water meets the dishes to be washed, with a portion of the rinse water adhering to the dishes and another part flows back into the collection pot.
  • the monitoring of the rotational speed of the circulation pump for example, by monitoring the electrical operating data of the pump, such as power consumption, with the aid of the control device, or by monitoring the noise of the circulation pump, in particular with the aid of at least one control parameter of the control device, take place.
  • the control device can be used by the control device as a measure of the speed of the circulating pump, the course of the electrical current absorbed by the circulation pump.
  • control device can thus be derived indirectly by means of the control device at least one criterion on the type or type of dishes to be washed.
  • By monitoring the speed of the circulation pump can also be prevented that the dishwasher is operated at a faulty water supply.
  • the corresponding sensor thus serves several purposes.
  • the senor for detecting the adhering to the dishes amount of rinse water is designed as a sensor for monitoring a level of accumulating in a lower portion of the rinse tank rinse water.
  • a sensor is simple in design, but provides sufficiently accurate measurement results.
  • the evaluation module for detecting the total amount of dishes is connected to a sensor for detecting the heating rate.
  • the heating rate indicates by which value the temperature of the rinsing water increases under the effect of a heating device of the dishwasher in a certain time. The heating rate is lower, the more dishes are in the washing.
  • the actual sensor can be a simple temperature sensor, which is required to control the temperature of the rinse water anyway. The heating rate can therefore be determined without major design changes to the dishwasher.
  • the evaluation module for detecting the total amount of dishes is connected to a sensor for detecting the weight of the dishes.
  • the sensor may be configured to detect the total weight of the rinse container or the total weight of the racks.
  • the sensor may comprise one or more so-called strain gauges. This results in a simple and relatively accurate detection of the total amount of dishes.
  • the dish detection device has a digital signal processor for evaluating a signal of one of the sensors.
  • Digital signal processors are particularly suitable for evaluating the signals of the sound transducer described above or the signals of the camera described above.
  • the evaluation modules respectively assigned to the sensors are then software modules which are executed by the digital signal processor.
  • Digital signal processors allow the execution of even complex evaluation algorithms in near real time.
  • the evaluation modules implemented with the aid of a digital signal processor can be easily implemented and subsequently adapted.
  • the dish detection device may include a plurality of digital signal processors due to However, today's performance is sufficient in many cases, a single digital signal processor.
  • At least one control parameter of the control device for detecting a type of dishware made of a similar material.
  • FIGS. 1 and 2 each provided with the same reference numerals.
  • FIG. 1 shows an advantageous embodiment of an inventively constructed dishwasher 1 in a schematic side view, with only the essential components for understanding the invention are shown and provided with reference numerals.
  • the dishwasher 1 which is designed as a household dishwasher 1, has a housing 2, in which a washing container 3 is arranged.
  • the rinsing container 3 can be closed by a door 4, so that a closed rinsing chamber is created for rinsing crockery.
  • the door 4 is shown in its closed position.
  • the door 4 can be brought into an open position by pivoting about an axis arranged perpendicular to the plane of the drawing, in which it is aligned substantially horizontally and allows the introduction or removal of dishes.
  • the dishwasher 1 has an upper dish rack 5 and a lower dish rack 6 for positioning dishes.
  • the upper crockery basket 5 is arranged on extension rails 7, which are each attached to a side wall of the washing container 3.
  • the crockery basket 5 is open door 4 by means of the extension rails. 7 from the washing container 3 extendable, which facilitates the loading and unloading of the upper dish rack 5.
  • the lower dish rack 6 is arranged in an analogous manner on extension rails 8.
  • the dishwasher 1 comprises a supply device 9 for fresh water FW, which is designed so that externally supplied fresh water FW controlled in the interior of the washing container 3 can pass.
  • the fresh water supplied FW collects due to its gravity as flushing water S in a collecting pot 10, which forms a lower part of the washing container 3.
  • the collecting pot 10 is in communication with a circulating pump 11, with the aid of which flushing water S can be pumped out of the collecting pot 10 via a heater 12 to a water distributor 13.
  • the water diverter 13 has two outlets, one of which is connected to an upper spray arm 14 and the other to a lower spray arm 15.
  • the water switch 13 is controlled so that the funded by the circulation pump 11 rinse water S is optionally promoted by one of the spray arms 14, 15 or by both spray arms 14, 15 in the washing 3, so as to flush the dishes located there.
  • a discharge device 16 is furthermore provided, which is designed for discharging rinsing water S as wastewater AW to the outside.
  • a metering device 17 is further provided.
  • the dishwasher 1 has a control device 18 arranged in the region of a control panel of the door 4, which control device is connected to the feed device 9, to the circulation pump 11, to the heater 12, to the water separator 13, to the discharge device 16 and to the metering device 17 ,
  • the control device 18 is designed for automatic sequence control of a wash program.
  • a typical washing program includes several successive sections.
  • a first section of a washing program is usually provided as a pre-wash cycle.
  • a certain amount of fresh water FW is passed through the feeding device 9 in the washing compartment 3.
  • the supplied fresh water FW is then by means of the circulation pump 11 as the rinse water S for a certain period in the washing container. 3 circulated.
  • the rinsing water S is in particular circulated at a relatively low temperature, for example 30 ° C. Of course, if necessary, a stronger heating of the rinse water in the pre-rinse process is possible.
  • An addition of cleaning agents can be omitted.
  • the rinse water S is discharged with the dirt at the end of the pre-rinse cycle via the discharge device 16 to the outside.
  • the pre-rinse cycle is followed by one or more cleaning cycles, in which the rinsing container is again filled with fresh water FW.
  • the fresh water FW is brought as a rinse water S to a higher temperature, for example to 50 ° C, and added with cleaning agents. After a circulation of the rinse water S for a certain period of time, the rinse water S is discharged again via the discharge device 16.
  • the rinse water S is mixed with a rinse aid and circulated.
  • the rinse cycle prepares a spot-free drying of the washed dishes.
  • the rinse water S is brought to a particularly high temperature, for example to 70 ° C, so that also heats the dishes.
  • the rinse water S is pumped out again.
  • the dishwasher 1 In order to optimize the sequence of the washing program with a view to a specific loading state of the washing container 3, the dishwasher 1 according to the invention has a dish detection device.
  • the adaptation of the sequence can relate to all parameters of the basic sequence outlined above.
  • the dish detection device comprises a central unit 19, which communicates with the control device 18 for information exchange.
  • the central unit 19 can be arranged in spatial proximity to the control device 18 or be integrated directly into it.
  • the dish detection device further comprises a plurality of sensors whose sensor signals are supplied to the central unit 19.
  • the dish detection device comprises a sound transducer 20, which is arranged in the region of the lower crockery basket 6 on the inside of the door 4.
  • the sound transducer 20 could also be arranged on a fixed wall of the washing container 3.
  • the sound transducer 20 is designed as a microphone 20 and detects noises, which arise from the fact that rinse water S is sprayed onto the dishes located in the washing container 3. Since the noise resulting from the impinging rinse water S depends substantially on the material mix of the dishes, an analysis of the signals generated by the sound transducer 20 allows detection of one or more types of dishes characterized by a respective common material.
  • a light source 21 is arranged, which consists of two light-emitting diode assemblies 21.
  • the LED banks 21 are arranged so that the dishes located in the washing container 3 is illuminated. This results in the dishes light reflections, which have different properties depending on the type of dish.
  • the sensor 23 is a level sensor 23, which detects the level of flushing water S in the collection pot 10. If the amount of flushing water supplied as fresh water FW is known, then the filling level in the collecting pot 10 is known a measure of how much water adheres to the dishes during the wash cycle. This adhering amount of rinse water S, in turn, is a measure of the total amount of dishes in the rinse tank 3.
  • the sensor 24 is designed as a temperature sensor 24, which detects the temperature of the rinse water S. It allows the determination of the heating rate, ie an increase in the temperature in a specific time unit, which is caused by the heater 12.
  • the heating rate is inversely proportional to the total amount of dishes.
  • the sensor 25 is designed as a speed sensor 25, wherein the speed sensor 25 detects the rotational speed of the circulation pump 11.
  • the determination of the total amount of dishes can now be such that first a certain amount of fresh water FW is introduced into the washing tank 3, this is circulated and now checked whether the level in the sump 10 drops so far that the circulation pump 11 sucks air, which makes itself felt in a speed increase. Then fresh water FW is supplied again in a certain amount and determines whether air is sucked again. This procedure is repeated until no more air is sucked in, so that the circulating pump runs around again. In this way, a determination of the adhering to the dishes amount of rinse water S is possible, which is a measure of the Spülgutmenge. If necessary, instead of the rotational speed sensor 25, it may also be sufficient if the control device 18 derives a measure of its rotational speed from the current consumption curve of the circulation pump, i. this determined indirectly. The separate speed sensor can thus be omitted.
  • the sensor 26 is designed as a weight sensor.
  • the weight sensor 26 includes strain gauges 26 a, which detect the weight of the upper crockery basket 5.
  • the sensor 26 comprises strain gauges 26b, which detect the weight of the lower crockery basket 6.
  • FIG. 2 shows a block diagram of the dish detection device 27.
  • the central unit 19 of the dish detection device 27 comprises an evaluation module 28 for detecting plastic dishes, an evaluation module 29 for detecting metal dishes, an evaluation module 30 for detecting glassware and an evaluation module 31 for detecting the total amount of the dishes.
  • the central unit 19 comprises a digital signal processor 32, on which the evaluation modules 28 to 31 are set up by appropriate software.
  • the evaluation modules 28 to 31 each execute an algorithm for evaluating sensor signals.
  • the evaluation modules 28 to 31 are preferably independent of each other insofar as the evaluation result of the one evaluation module does not depend on the result of another evaluation module. Sensor signals are always processed directly.
  • the evaluation module 28 is designed for detecting plastic harness for evaluating the signals of the sound transducer 20 described above.
  • the evaluation module 29 for detecting metal utensils is also designed for evaluating the signals of the sound transducer 20, but the detection of metalware is based on the detection of metalware typical noises and the detection of plastic dishes due to the detection of plastic dishes typical noise components.
  • the evaluation modules 28 and 29 are designed to analyze the amplitudes of different frequencies of the noise.
  • the evaluation module 30 for detecting glassware is designed to evaluate the images captured by the camera 22.
  • the corresponding images are transmitted as a signal from the camera 22 to the evaluation module 30.
  • the total amount of crockery evaluation module 31 is further configured to evaluate the signals from the level sensor 23, the temperature sensor 24, the speed sensor 25, and the weight sensor 26.
  • the evaluation results of the evaluation modules 28 to 31 are transmitted to the control device 18.
  • the control device 18 is thus enabled to control the flow of the washing program in dependence on the detected dishes.
  • the control device 18 to adapt the supplied fresh water quantity exactly to the respective load by means of corresponding control commands to the feed device 9.
  • the duration is also a circulation phase, for example in a pre-rinse, controllable.
  • the pressure of the rinse water during the circulation can be varied.
  • the rinse water temperature can be adapted to the specific requirements.
  • the distribution of the rinsing water S to the upper or lower spray arm can be varied.
  • Corresponding control commands to the discharge device 16 ensure that the pumping out of wastewater takes place after the completion of a circulation phase.
  • the control device 18 it is possible for the control device 18 to vary the supply of cleaning agents or cleaning aids as a function of the actual loading of the washing container 3 by corresponding control commands to the metering device 17.

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Claims (22)

  1. Lave-vaisselle sous la forme d'un lave-vaisselle ménager avec une cuve de lavage (3) pour l'accueil de vaisselle durant un programme de lavage, avec un dispositif de détection de vaisselle (27) pour la détection de la vaisselle placée dans la cuve de lavage (3) et avec un dispositif de commande (18) pour la commande du déroulement du programme de lavage en fonction de la vaisselle détectée, caractérisé en ce que le dispositif de détection de vaisselle (27) présente une pluralité de modules d'évaluation (28, 29, 30) travaillant indépendamment l'un de l'autre, lesquels sont respectivement exécutés afin de détecter un type de vaisselle composée d'un même type de matériau au moyen des signaux d'au moins un capteur (20, 22) et/ou au moyen d'au moins un paramètre de commande du dispositif de commande (18), de sorte que l'évaluation des signaux concernant un type de vaisselle s'effectue indépendamment de l'évaluation des signaux concernant un autre type de vaisselle, un des modules d'évaluation (28) étant exécuté pour la détection de vaisselle en plastique au moyen des signaux d'au moins un capteur (20), un autre des modules d'évaluation (29) étant exécuté pour la détection de vaisselle métallique à l'aide des signaux d'au moins un capteur (20), et dans lequel encore un autre des modules d'évaluation (30) est exécuté pour la détection de vaisselle en verre à l'aide des signaux d'au moins un autre capteur (22).
  2. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le dispositif de détection de vaisselle (27) englobe un module d'évaluation (31) pour la détection de la quantité totale de vaisselle se trouvant dans la cuve de lavage (3) à l'aide des signaux d'au moins un capteur (23, 24, 25, 26).
  3. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le dispositif de détection de vaisselle (27) présente au moins un transducteur acoustique (20) pour la détection d'un bruit généré par l'eau de lavage (S) pulvérisée sur la vaisselle.
  4. Lave-vaisselle selon la revendication 3, caractérisé en ce que le transducteur acoustique (20) est relié à au moins un des modules d'évaluation (28, 29, 30, 31).
  5. Lave-vaisselle selon la revendication 4, caractérisé en ce que le module d'évaluation respectif (28, 29) afin d'analyser le bruit est exécuté de telle sorte que le type de vaisselle respectif resp. l'intégralité de la vaisselle est détectable selon un algorithme d'évaluation sonore préétabli.
  6. Lave-vaisselle selon l'une des revendications 3 à 5, caractérisé en ce qu'un bras de pulvérisation (14, 15) en rotation durant un programme de lavage afin de pulvériser la vaisselle d'eau de lavage (S) est prévu, le module d'évaluation (28, 29) respectif relié au transducteur sonore (20) étant exécuté afin d'analyser le bruit sur au moins une rotation du bras de pulvérisation (14, 15).
  7. Lave-vaisselle selon l'une des revendications 3 à 5, caractérisé en ce que le module d'évaluation (28, 29) relié au transducteur sonore (20) est exécuté afin d'analyser le bruit sur une pluralité de rotations du bras de pulvérisation (14, 15).
  8. Lave-vaisselle selon l'une des revendications 3 à 7, caractérisé en ce que le module d'évaluation (28, 29) respectif relié au transducteur sonore (20) est exécuté afin d'analyser les fréquences contenues dans le bruit.
  9. Lave-vaisselle selon l'une des revendications 3 à 8, caractérisé en ce qu'un module d'évaluation (28) pour la détection de vaisselle en plastique et/ou un module d'évaluation (29) pour la détection de vaisselle métallique est relié au transducteur sonore (20).
  10. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le transducteur sonore (20) est disposé dans la zone d'un panier à vaisselle inférieur (6).
  11. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le dispositif de détection de vaisselle (27) présente au moins une source lumineuse (21) pour éclairer la vaisselle et au moins une caméra (22) pour la détection par l'image de réflexions lumineuses survenant sur la vaisselle, dans lequel la caméra (22) est reliée à au moins un des modules d'évaluation (28, 29, 30, 31), et dans lequel le module d'évaluation respectif (30) pour l'analyse des réflexions lumineuses est exécuté de telle sorte que le type de vaisselle respectif resp. l'intégralité de la vaisselle est détectable selon un algorithme d'évaluation lumineuse préétabli.
  12. Lave-vaisselle selon la revendication 11, caractérisé en ce que le module d'évaluation (30) respectivement relié à la caméra (22) est exécuté afin de déterminer le nombre et/ou la taille des réflexions lumineuses survenant sur la vaisselle.
  13. Lave-vaisselle selon l'une des revendications 11 ou 12, caractérisé en ce que le module d'évaluation (30) respectivement relié à la caméra (22) est exécuté afin de déterminer le rapport entre la clarté des réflexions lumineuses et la clarté de leur support.
  14. Lave-vaisselle selon l'une des revendications 11 à 13, caractérisé en ce que le module d'évaluation (30) respectivement relié à la caméra (22) est exécuté afin de déterminer la répartition de la clarté au sein des réflexions lumineuses.
  15. Lave-vaisselle selon l'une des revendications 11 à 14, caractérisé en ce que la caméra (22) est reliée à un module d'évaluation (30) pour la détection de la vaisselle en verre.
  16. Lave-vaisselle selon l'une des revendications 11 à 15, caractérisé en ce que la caméra (22) est disposée dans la zone d'un panier à vaisselle supérieur (5).
  17. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le module d'évaluation (31) pour la détection de la quantité totale de vaisselle est relié à au moins un capteur (23, 25) pour la détection de la quantité d'eau de lavage (S) adhérant à la vaisselle.
  18. Lave-vaisselle selon la revendication 17, caractérisé en ce que le capteur (23, 25) pour la détection de la quantité d'eau de lavage (S) adhérant à la vaisselle est exécuté sous la forme d'un capteur (25) de surveillance de la vitesse de rotation d'une pompe de circulation (11).
  19. Lave-vaisselle selon l'une des revendications 17 ou 18, caractérisé en ce que le capteur (23, 25) pour la détection de la quantité d'eau de lavage (S) adhérant à la vaisselle est exécuté sous la forme d'un capteur (23) de surveillance d'un niveau de l'eau de lavage (S) s'accumulant dans une zone inférieure (10) de la cuve de lavage (3).
  20. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le module d'évaluation (31) pour la détection de la quantité totale de vaisselle est relié à un capteur (24) pour la détection du taux de chauffage.
  21. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le module d'évaluation (31) pour la détection de la quantité totale de vaisselle est relié à un capteur (26) pour la détection du poids de la vaisselle.
  22. Lave-vaisselle selon l'une des revendications précédentes, caractérisé en ce que le dispositif de détection de vaisselle (27) présente un processeur de signal numérique (32) pour l'évaluation d'un signal de l'un des capteurs (20, 22, 23, 24, 25, 26).
EP10717130.8A 2009-05-29 2010-04-29 Machine à laver la vaisselle Active EP2434936B1 (fr)

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WO2010136294A2 (fr) 2010-12-02
PL2434936T3 (pl) 2018-11-30
WO2010136294A3 (fr) 2011-04-14
US10080477B2 (en) 2018-09-25
DE102009023252A1 (de) 2010-12-02
US20120060875A1 (en) 2012-03-15

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