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EP3524125A1 - Procédé d'évaluation automatique de la présence de mousse dans un lave-vaisselle - Google Patents

Procédé d'évaluation automatique de la présence de mousse dans un lave-vaisselle Download PDF

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Publication number
EP3524125A1
EP3524125A1 EP19152611.0A EP19152611A EP3524125A1 EP 3524125 A1 EP3524125 A1 EP 3524125A1 EP 19152611 A EP19152611 A EP 19152611A EP 3524125 A1 EP3524125 A1 EP 3524125A1
Authority
EP
European Patent Office
Prior art keywords
collection zone
fluid collection
washing
washing fluid
volume
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
EP19152611.0A
Other languages
German (de)
English (en)
Other versions
EP3524125B1 (fr
Inventor
Aldo Fumagalli
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.)
Candy SpA
Original Assignee
Candy SpA
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Filing date
Publication date
Application filed by Candy SpA filed Critical Candy SpA
Publication of EP3524125A1 publication Critical patent/EP3524125A1/fr
Application granted granted Critical
Publication of EP3524125B1 publication Critical patent/EP3524125B1/fr
Active legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0055—Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
    • 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
    • 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
    • A47L15/4297—Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity
    • 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
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/30—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 description relates to a method for automatically evaluating the presence of foam in a dishwashing machine, according to the preamble of claim 1.
  • the present description also relates to a dishwashing machine configured to implement the method for automatically evaluating the presence of foam in a dishwashing machine, according to the preamble of claim 11.
  • the present description also relates to a system composed of a dishwashing machine and a portable device that can be gripped by a user and configured to implement the method for automatically evaluating the presence of foam in a dishwashing machine, according to the preamble of claim 14.
  • Dishwashing machines are known in the state of the art that are provided with optical devices such as photo cameras, television cameras or video cameras arranged in a fixed or movable position with respect to the washing tank to check the weight of the dishes or the degree of cleanliness of the dishes.
  • documents WO 2016008699 A1 and US 2012/0138092 A1 illustrate such dishwashing machines.
  • document US 2005/028850 A1 describes a method for automatically evaluating the presence of foam in a dishwashing machine comprising a washing zone provided with an area intended for the collection of the washing fluid.
  • a dishwasher envisages the loading of dishes into a washing zone thereof by the user and the use of a washing detergent.
  • Such detergent is usually positioned inside a dispenser which is provided with an appropriate door that opens automatically once the user has closed the door of the dishwasher and has started the pre-chosen wash program.
  • the presence of foam inside the washing zone of the dishwashing machine can cause an increase in noise during the operation of the wash pump.
  • the presence of foam can alter the normal performance of the washing cycle leading to deterioration of the washing performance.
  • the object of the invention in question is to overcome the drawbacks of the prior art.
  • a further object of the invention is that of realising a method, a dishwashing machine and a system for evaluating the presence of foam in a dishwashing machine so as to prevent the problems of the prior art described above.
  • 1 indicates a dishwashing machine, e.g. of the type built-in to a kitchen unit, free from finishing panels for better understanding of the internal volumes.
  • Such dishwashing machine 1 comprises a washing zone 2 and a door 3 that is associable in closure with the washing zone 2.
  • the dishwashing machine 1 identifies a base 1A, usually dedicated to housing the necessary mechanisms/devices for the performance of the main operations of the machine 1.
  • the washing zone 2 defines the volume inside which the dishes S are arranged.
  • the washing zone 2 is defined by a plurality of walls such as the base wall 2A, the side walls 2B and 2C, the top 2D and the bottom wall 2E and identifies an upper portion 2' and a lower portion 2".
  • upper/lower must be interpreted in light of the correct installation and condition of use of the dishwashing machine 1.
  • the term upper relates to the more distant part from the base 1A while the term lower relates to the more proximal part to the base 1A.
  • the door 3 can be activated by hand by the user and/or with an electrical servomechanism and has the aim of hermetically closing the washing zone 2 so as to prevent any losses of washing liquid during the performance of the cleaning program.
  • S means for example a plate, cutlery, a glass, a saucepan, etc..
  • the impellers 5A,5B are of the type known per se and therefore shall not be described. It is worth highlighting here that there may be one or, preferably, two impellers 5A,5B arranged in the washing zone 2.
  • the lower impeller 5A is placed in the lower zone 2' in proximity to the base 1A and the upper impeller 5B in the upper zone 2", preferably in the lower part of the upper zone 2".
  • the lower zone 2' of the washing zone 2 when the dishwasher 1 is in use, identifies the collection zone of the washing fluid 2"'.
  • such washing fluid collection zone 2'" is interposed between the lower impeller 5A and the base wall 2A.
  • the washing fluid collection zone 2"' is configured as a washing water collection tank, first clean as it is sucked from the water mains network at the start of the cleaning cycle, and subsequently contaminated by the residues of detergent and dirt once the washing cycle has finished.
  • a respective dish holder basket 21 is arranged which has the function of housing the various dishes S, according to techniques known in the art and therefore not described.
  • dish holder basket 21 means any device and/or accessory dedicated to the positioning thereof and therefore suitable for supporting the dishes S.
  • Such basket and/or accessories must be compatible with the dimensions of the washing zone 2 of the dishwashing machine 1.
  • the dishwashing machine 1 comprises a dispenser 6 conformed so as to define a suitable volume for housing the products or detergents necessary for cleaning objects, in particular dishes S.
  • Such dispenser 6 may comprise one or more compartments each intended to receive a specific washing product.
  • the dispenser 6 comprises a door 7 that is configured to pass between a closed position and a free access position to the internal volume of the dispenser 6.
  • the passage of the door 7 between the closed position and the open position is controlled mechanically and/or electrically by the control unit 4 following the closure of the door 3 of the dishwashing machine 1.
  • the dispenser 6 is located on the door 3, in particular on the side facing towards the washing zone 2, at a predefined height. More in particular, the dispenser 6 is housed inside the thickness of the door 3.
  • the dishwashing machine 1 comprises a control unit 4, e.g. arranged in the thickness of the door 3 provided with a mother plate on which the usual electrical and electronic devices are housed which may include a CPU, a series of I/O ports for receiving and emitting data in a memory bank, the latter having a dedicated portion for permanently storing at least one cleaning program.
  • a control unit 4 e.g. arranged in the thickness of the door 3 provided with a mother plate on which the usual electrical and electronic devices are housed which may include a CPU, a series of I/O ports for receiving and emitting data in a memory bank, the latter having a dedicated portion for permanently storing at least one cleaning program.
  • the cleaning program P is the result of one or a combination of more than one of the following parameters:
  • the program P may also comprise other parameters that are not described here for description simplicity purposes.
  • the control unit 4 is a unit configured to control and monitor the operating functions of the dishwashing machine 1.
  • a database is also permanently stored in which through appropriate parameters information is stored on the operating data collected by the sensors present inside the dishwashing machine.
  • Various sensors will be described below intended to collect parameters within the dishwashing machine during the operation thereof, such as for example optical devices.
  • the dishwashing machine 1 comprises a pump, e.g. arranged in the base 1A, which can be connected, according to techniques known to a person skilled in the art and therefore not described, with a mains water inlet.
  • Such pump is controlled by the control unit 4 and has the task of making water flow into the impellers 5A, 5B arranged inside the washing zone.
  • the dishwashing machine 1 comprises one or more optical devices 8 able to acquire digital images of the washing zone 2.
  • the optical devices 8 are arranged so that their optics are facing towards the washing fluid collection zone 2'" which, as already mentioned before, is interposed between the lower impeller 5A and the base wall 2A.
  • each wall 2A, 2B, 2C, 2D and/or 2E of the washing zone 2 can each house, within their thickness, one or more of the aforesaid optical devices 8.
  • a seat 2F is provided for each optical device 8.
  • the seat 2F defines a suitable volume for housing the respective optical device and, preferably, to cover the optics of the optical device, a covering panel 8A is provided which is transparent to light.
  • Such covering panel 8A is, for example, made of glass or plastic or materials having similar technical properties.
  • the covering panel 8A is preferably arranged so as to be substantially flush or slightly projecting from the surface of the wall 2A, 2B, 2C, 2D or 2E.
  • the optical devices 8 are housed inside respective seats 2F obtained in the body of the dishwashing machine 1 at the washing fluid collection zone 2"'.
  • the washing fluid collection zone 2'" is configured like a collection tank for the washing liquid which has a bottom wall F and a side wall LT (or various side walls) that define a container for collecting liquids.
  • the seat 2F in which one or more respective optical devices 8 are housed, is obtained in the thickness of the side wall LT of the washing fluid collection zone 2"', so that the optical device 8 is able to transversally scan the washing fluid collection zone 2"', e.g. to acquire images of a predefined quadrant Q.
  • the covering panel 8A is substantially arranged flush with the side wall LT of the washing fluid collection zone 2"'.
  • the seat 2F can be obtained in the thickness of the top 2D of the dishwashing machine 1.
  • each seat 2F All the electrical and electronic elements necessary for the operation of the optical device 8 are arranged in each seat 2F. Such arrangement is advantageous considering that it allows the optical device 8 to frame the washing fluid collection zone 2'" during the entire washing cycle.
  • the optical device 8 has an optical field of view that allows the images of the washing fluid collection zone 2"' that fall within such field of view, i.e. in a predefined quadrant Q, to be acquired.
  • the purpose of the optical devices 8 used in the dishwashing machine 1 is that of acquiring 2D images that are fixed and/or in sequence, at predetermined capture speeds, such as for example a single photogram, or a burst of images, or an uninterrupted flow of images of the washing fluid collection zone 2"'.
  • the optical devices 8 acquire the images of the washing liquid seen transversally from the side wall LT of the washing fluid collection zone 2"', so as to display and clearly identify at least the line of the level reached by the surface of the washing liquid.
  • the aforesaid optical devices 8 preferably acquire the images of the washing fluid collection zone 2'" throughout the whole washing cycle, at pre-established time intervals or with a predefined acquisition frequency.
  • Such optical devices 8 are in signal communication with the control unit 4 through its I/O ports in order to send the data acquired to the control unit 4.
  • Such optical devices 8 are embodied in a photo camera and/or a video camera. Such devices are known in the sector and therefore will not be described in detail in the present description.
  • the photo camera and/or video camera which can be used in the dishwashing machine 1 are preferably able to acquire images with lower acquisition times than a tenth of a second and adhere to the technical specifications according to which their operation is guaranteed also in the presence of water, i.e. the photo camera and/or video camera comply with the standard IP x(1-8).
  • the seat 2F within which the optical devices 8 are arranged, is configured so as to be hermetic to water, e.g. using sealing techniques.
  • the dishwashing machine 1 comprises a user interface 9, i.e. the command and control interface through which the user can control and manage the operations and functions of the dishwashing machine itself.
  • the user interface 9 is in signal communication with the control unit 4 through its I/O ports in order to receive the data processed by the CPU of the control unit 4 itself.
  • the user interface 9 is a screen 23 integrated into the dishwashing machine 1 so that it can be visible to a user during its normal use and/or with the addition of a buzzer (not shown in the figure).
  • the user interface 9 is integrated into the door 3 so that the screen faces the washing zone 2 externally.
  • the screen 23 of the user interface 9 is configured to display luminous indications, text messages and/or single or continuous images.
  • the images that can be displayed on the screen may be images of the washing zone 2 and of the related objects provided there acquired by the optical devices 8.
  • the screen may be of the touch type.
  • the user interface 9 comprises one or more analog buttons and/or a combination of analog/digital controls and/or a combination of analog/digital controls and a screen, the latter for example of the touch type.
  • the buzzer of the user interface 9 has the aim of reporting any operating conditions or situations to the user through an acoustic signal.
  • the dishwashing machine 1 comprises a radio transceiver device which is configured to create a signal communication with a wired and/or wireless network.
  • the wireless network may be a network based on an internet protocol through a WI-FI connection or a WPAN: (Wireless Personal Area Network) based on Bluetooth protocol.
  • the user interface 9 also comprises a portable device (i.e. transportable or graspable by a hand of a user) 22 such as, for example, a smartphone, a tablet, a pc or similar instruments.
  • the user interface 9 comprises both the usual control interface of the dishwashing machine 1 and the screen of the transportable device 22.
  • the portable device 22 comprises its own radio transceiver device which is configured to establish a signal communication with the radio transceiver of the dishwashing machine 1.
  • the portable device 22 as well as being able to communicate with the control unit 4 of the dishwashing machine 1 can also connect through the internet, e.g. through GSM infrastructure, with one or more remote servers 24 in order to perform the archiving, saving and/or processing operations of data on the images acquired by the optical devices 8.
  • the internet e.g. through GSM infrastructure
  • the portable device 22 is suitable to connect both directly with the dishwashing machine 1 and with the internet through the GSM infrastructure.
  • a system 25 is configured comprising the dishwashing machine 1, the portable device 22 in signal communication between them through GSM network, WI-FI connection and/or a WPAN network.
  • the screen of the portable device 22 is configured to display luminous indications, text messages and/or images acquired from the optical devices 8.
  • the database may be stored at least partially, preferably completely, in the memory of the portable device 22, in a mass memory of the server and/or, in distributed mode, between the memory of the dishwashing machine 1, of the portable device 22 and of the server 23.
  • control unit 4 is in signal communication with the user interface 9 (whether it is in the form of the actual screen only of the dishwashing machine 1 or that of the screen of the portable device 22) in order to be able to signal through the user interface 9 the presence of foam in the dishwasher 1 and/or the modifications made to one or more of said cleaning parameters of the cleaning program P.
  • cleaning parameters of the cleaning program P means in the present description any change to the parameters of the program P following the identification of the presence of foam in the dishwashing machine.
  • the method for automatically evaluating the presence of foam in a dishwashing machine 1 preferably comprises a step 10A of supplying detergent into the dispenser 6, i.e. it envisages that the user positions in the compartment of the dispenser 6 the detergent selected by him/her.
  • the method comprises a step 10B of automatically filling the washing fluid collection zone 2'" with clean water sucked from the water supply network connected to the dishwashing machine 1.
  • the steps of the method described herein below, the acquisition and processing steps may be performed either directly by the CPU of the control unit 4 or, more preferably, by the CPU of the portable device of the user also through internet connection with the CPU of remote servers used for the analysis and processing of the data.
  • the method comprises the step 11 of acquiring a first digital image 11A representative of a first condition of the washing fluid collection zone 2"'.
  • Such acquisition step 11 is performed through the optical device(s) 8 provided inside the washing zone 2.
  • the control unit 4 monitors the acquisition step by controlling the optical device(s) 8.
  • the method also comprises the step of digitally processing 12 the first digital image 11A so as to obtain a first processed image 11B, in which the first processed image 11B identifies a value of a first volume of fluid contained in the washing fluid collection zone 2"'. It is necessary to specify that the first processed image 11B identifies a value representative of the first volume of fluid contained in the washing fluid collection zone 2"', i.e. of the volume of fluid present in the washing fluid collection zone 2"'.
  • the volume of fluid may comprise both the volume occupied by a liquid fluid such as water, and that occupied by a fluid in the at least partially gaseous state, such as in the case of foam.
  • the method comprises a step of acquiring 13 a second digital image 13A representative of a second condition of the washing fluid collection zone 2'" after a predefined time interval from the performance of the step of acquiring 11 a first digital image 11A.
  • the step of acquiring 13 a second digital image 13A is performed after the release of the detergent into the washing fluid collection zone 2'" and/or after activation of the washing pump at regular time intervals, preferably at intervals of a minute or more.
  • the method further comprises the step of digitally processing 14 the second digital image 13A so as to obtain a first processed image 13B, in which the second processed image 13B identifies a value of a second volume of fluid contained in a washing fluid collection zone 2"'. Also in this case it is necessary to specify that the second processed image 11B identifies a value representative of the second volume of fluid contained in the washing fluid collection zone 2"', i.e. of the volume of fluid present in the washing fluid collection zone 2"'.
  • the volume of fluid comprises both the volume occupied by a liquid fluid such as water, and that occupied by a fluid in the at least partially gaseous state, such as in the case of foam.
  • the method comprises the step of comparing 15 the first processed image 11B with the second processed digital image 13B, i.e. the value of the first volume of fluid with the value of the second volume of fluid, to calculate a value of fluid volume variation DV between the first condition and the second condition of said washing fluid collection zone 2"'.
  • the method comprises a step of generating 16 a foam presence signal Sig indicative of the presence of foam in the washing fluid collection zone 2"', when the value of fluid volume variation DV exceeds a predefined threshold value.
  • the method also comprises the step of modifying 17 the cleaning parameters of the cleaning program P of the dishwashing machine 1 when the foam presence signal Sig is generated.
  • the first digital image 11A is representative of a first condition of the washing fluid collection zone 2'" before the activation of the wash pump.
  • the image 11A is acquired, alternatively, before the filling step 10B of the washing fluid collection zone 2'" with clean water, or after such step when the washing fluid collection zone 2"' is filled with clean water (in both cases, before the activation of the wash pump).
  • the method comprises a step of automatically activating the wash pump.
  • the second digital image 13A is representative of a second condition of the washing fluid collection zone 2'" after a predefined time interval following the wash pump activation step.
  • the method comprises the step of automatically filling 10B the washing fluid collection zone 2'" with clean water.
  • the first digital image 11A is preferably representative of a first condition of the washing fluid collection zone 2'" in which the washing fluid collection zone 2'" contains clean water.
  • the second digital image 13A is representative of a second condition of the washing fluid collection zone 2'" after a predefined time interval following the step of filling the washing fluid collection zone 2"'.
  • the method also comprises a step of automatically releasing a detergent into the washing fluid collection zone 2"'.
  • the second digital image 13A is representative of a second condition of the washing fluid collection zone 2'" after a predefined time interval following the performance of the step of automatically releasing a detergent into the washing fluid collection zone 2"'.
  • the first processed image 11B identifies a first level line L1 of the first volume of fluid contained in a washing fluid collection zone 2"'.
  • the second processed image 13B identifies a second level line L2 of the second volume of fluid contained in the washing fluid collection zone 2"'.
  • the level lines L1, L2 are the lines that define the surface of the fluid contained in the washing fluid collection zone 2"', transversally observing the volume of fluid through an optical device 8 arranged in the side wall LT of the washing fluid collection zone 2"'.
  • the level lines L1, L2 are not necessarily perfectly horizontal, an expected condition in the case of clean or foam-free water, but can have an irregular trend with peaks and troughs in the case of the presence of foam on the surface of the liquid.
  • the step of comparing 15 the first volume of fluid with the second volume of fluid comprises the sub-step of comparing the first level line L1 with the second level line L2 for calculating the value of fluid volume variation DV between the first condition and the second condition of the washing fluid collection zone 2"'.
  • the first processed image 11B identifies a first surface S1 representative of the space occupied by the first volume of fluid in a predefined quadrant Q of the washing fluid collection zone 2"'.
  • the quadrant Q is configured like a grille and, as already mentioned, its outlines are predefined and determined by the scanning capacity of the optical devices 8 that acquire transverse images of the fluid contained in the washing fluid collection zone 2"'.
  • the second processed image 13B identifies a second surface S2 representative of the space occupied by the second volume of fluid in the predefined quadrant Q of the washing fluid collection zone 2"'.
  • the step of comparing 15 the first volume of fluid with the second volume of fluid comprises the sub-step of comparing the first surface S1 with the second surface S2 for calculating the value of fluid volume variation DV between the first condition and the second condition of the washing fluid collection zone 2"'.
  • these parameters may be related to the volume of the fluid containment tank of the washing fluid collection zone 2"', so as to be able to calculate on a case-by-case basis the volume of fluid contained in the washing fluid collection zone.
  • the method envisages iteratively repeating, during a washing cycle, the step of:
  • the method comprises the step of providing a reference digital image RIF representative of a reference condition of the washing fluid collection zone 2'".
  • the reference digital image RIF identifies a reference fluid volume contained in the washing fluid collection zone 2"'.
  • the comparison step 15 comprises the sub-step of comparing the reference digital image RIF with the first processed image 11B, i.e. the value of the reference fluid volume with the value of the first volume of fluid for calculating a value of fluid volume variation DV between the reference condition and the first condition of the washing fluid collection zone 2"'.
  • the reference digital image RIF relates to a condition of the reference fluid collection zone 2'" that may be empty or filled with clean water. It is worth highlighting that the reference image is known to the dishwashing machine manufacturer and can be stored in the database.
  • the method comprises one or more of the steps for modifying the cleaning parameters of the cleaning program P of the dishwashing machine 1 when the foam presence signal is generated:
  • the method comprises the step of signalling through the user interface 9 the presence of foam when the foam presence signal is generated and/or the modifications made to one or more of the cleaning program cleaning parameters P.
  • the method of the present invention allows the presence of foam in the dishwashing machine 1 to be detected.
  • the method allows one or more of the cleaning parameters of the cleaning program P to be modified as a function of the possible presence of foam.
  • the cleaning parameters of the cleaning program that may be modified based on the amount of foam detected and at the time of the cycle in which it is detected are one or a combination of more than one of the following parameters:
  • the method comprises a step of signalling through the user interface the presence of foam and/or the modifications made to one or more of the cleaning parameters of the cleaning program P so as to promptly inform the user of the variations made.
  • the dishwashing machine 1 it is possible to signal through the user interface 9 the identification of a change in operating status of the machine itself in order to be able to restore the correct installation conditions of the object. This reduces the need to perform a dedicated wash for some dishes and/or to repeat the washing cycle with consequent water, detergent and energy consumptions.
  • the method can be performed as follows:
  • the second processed image 13B will not have any variation of the image compared to that of the first processed image 11B. In the presence of foam, instead, the space will be occupied by foam and therefore the "foam presence" condition will be identified.
  • a foam reset signal in the event that, following the modification of the program and the washing parameters, all or almost all of the foam previously detected has been removed, obtaining a negative fluid quantity variation value. Furthermore, in the same way, it is possible to generate a foam absence signal when the value of the fluid quantity variation is equal to zero.

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EP19152611.0A 2018-01-25 2019-01-18 Procédé d'évaluation automatique de la présence de mousse dans un lave-vaisselle Active EP3524125B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT201800001818A IT201800001818A1 (it) 2018-01-25 2018-01-25 Metodo per valutare automaticamente la presenza di schiuma in una macchina lavastoviglie

Publications (2)

Publication Number Publication Date
EP3524125A1 true EP3524125A1 (fr) 2019-08-14
EP3524125B1 EP3524125B1 (fr) 2020-08-26

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Country Link
EP (1) EP3524125B1 (fr)
CN (1) CN110074737B (fr)
ES (1) ES2821476T3 (fr)
IT (1) IT201800001818A1 (fr)

Cited By (1)

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CN115120117A (zh) * 2022-08-05 2022-09-30 九牧厨卫股份有限公司 基于图像处理的水槽清洗净化控制方法、装置及水槽

Families Citing this family (1)

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CN110074737A (zh) 2019-08-02
EP3524125B1 (fr) 2020-08-26
RU2019101621A (ru) 2020-07-22
IT201800001818A1 (it) 2019-07-25
RU2019101621A3 (fr) 2022-04-05

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