EP3517015A1 - Procédé d'évaluation automatique du degré de propreté du système de filtrage dans un lave-vaisselle - Google Patents
Procédé d'évaluation automatique du degré de propreté du système de filtrage dans un lave-vaisselle Download PDFInfo
- Publication number
- EP3517015A1 EP3517015A1 EP19152569.0A EP19152569A EP3517015A1 EP 3517015 A1 EP3517015 A1 EP 3517015A1 EP 19152569 A EP19152569 A EP 19152569A EP 3517015 A1 EP3517015 A1 EP 3517015A1
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- EP
- European Patent Office
- Prior art keywords
- filter
- condition
- dirt
- dishwashing machine
- value
- 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.)
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- 238000004851 dishwashing Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000001914 filtration Methods 0.000 title claims abstract description 19
- 230000003749 cleanliness Effects 0.000 title claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 91
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000009825 accumulation Methods 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 19
- 230000000007 visual effect Effects 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 12
- 239000003599 detergent Substances 0.000 claims description 7
- 230000011664 signaling Effects 0.000 claims description 4
- 230000035508 accumulation Effects 0.000 description 15
- 238000004140 cleaning Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
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- 238000001035 drying Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
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Images
Classifications
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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
-
- 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
- A47L15/0063—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control using remote monitoring or controlling of the dishwasher operation, e.g. networking systems
-
- 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
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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
- A47L15/4202—Water filter means or strainers
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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
- A47L15/4202—Water filter means or strainers
- A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
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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
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
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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
- A47L15/4293—Arrangements for programme selection, e.g. control panels; Indication of the selected programme, programme progress or other parameters of the programme, e.g. by using display panels
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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
- A47L15/0018—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
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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
- 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
- A47L2401/34—Other automatic detections
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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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/26—Indication or alarm to the controlling device or to the user
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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
- A47L2601/00—Washing methods characterised by the use of a particular treatment
- A47L2601/02—Pressurised cleaning liquid delivered by a pump
Definitions
- the present description relates to a method for automatically evaluating the degree of cleanliness of the filtering system 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 degree of cleanliness of the filtering system in a dishwashing machine, according to the preamble of claim 10.
- 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 degree of cleanliness of the filtering system in a dishwashing machine, according to the preamble of claim 13.
- 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 WO2016008699 and US 2012/0138092 illustrate the aforesaid dishwashing machines.
- document US 2013/032171 A1 describes a dishwashing machine comprising a washing zone provided with a washing fluid collection zone in which a filter is positioned, and a method for automatically evaluating the degree of cleanliness of the filtering system of the dishwashing machine.
- 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.
- Dishwashing machines of the known type are provided with a filter positioned at the bottom of the washing water collection tank, so as to be able to filter the water during the washing cycle, in order to collect and retain any deposits of dirt.
- the function of the filtering system placed in the lower part of the dishwashing machine is to guarantee that the water used in the washing circuit is filtered from debris and from dirt so as to guarantee better washing performance.
- a further function of the filtering system is to prevent residues of food and/or other objects being able to be introduced into the washing and draining circuits of the product.
- 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 degree of cleanliness of the filtering system in a dishwashing machine so as to prevent the problems of the prior art described above.
- the embodiment of the present invention it is possible to realize a method that allows the user to be informed of the need for maintenance of the filters. This allows the user to perform the correct maintenance of the product by preventing the decline of the washing performance due to the presence of dirty filters.
- 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 cleaned as it is sucked from the water mains network at the start of the cleaning cycle, and subsequently contaminated by the dirt residues once the washing cycle has finished. It is however best to highlight that the dirt residues may also be present when the water is sucked from the mains network at the start of the cleaning cycle as such residues are due to the preceding washing cycle(s) to the one in progress.
- the dishwashing machine 1 is also provided with a filter F, illustrated schematically in figure 4 , arranged on the bottom wall of the washing fluid collection zone 2"'.
- the filter F comprises a filtering element F' adapted to filter the washing water, so as to retain the dirt residues and debris produced during the course of the washing cycle.
- the filter F also comprises a collection tank F" that extends surrounding the filtering element F' to collect the residues and accumulations of dirt that are retained by the filtering element F'. It is worth highlighting that the filter F must be regularly cleaned through manual intervention by a user in order to remove the accumulation of dirt and debris contained in the collection tank F".
- 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.
- the optical devices 8 are arranged so that their optics are facing towards the filter F, and in particular towards the collection tank F" and, optionally, also towards the filtering element F'.
- 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.
- the seat defines a suitable volume for housing the respective optical device and, preferably, to cover the optics of the optical device, a covering panel is provided which is transparent to light.
- Such covering panel is, for example, made of glass or plastic or materials having similar technical properties.
- the covering panel 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 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 and a side wall (or various side walls) that define a container for collecting liquids.
- the seat in which one or more respective optical devices 8 are housed is obtained in the thickness of the side wall of the washing fluid collection zone 2"', so that the optical device 8 is able to transversally scan the washing fluid collection zone 2"', and in particular for acquiring images of the collection tank F" of the filter F.
- the covering panel 8A is substantially arranged flush with the side wall of the washing fluid collection zone 2"'.
- All the electrical and electronic elements necessary for the operation of the optical device 8 are arranged in each seat. Such arrangement is advantageous considering that it allows the optical device 8 to frame the washing fluid collection zone 2"', and in particular of the collection tank F", throughout 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 predefined field of view to be acquired and, even more preferably, focused on the surface area of the collection tank F".
- the purpose of the optical devices 8 used in the dishwashing machine 1 is that of acquiring two-dimensional 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"', and in particular of the collection tank F" of the filter F.
- the optical devices 8 acquire the images of the filter F seen transversally from the side wall of the washing fluid collection zone 2"', so as to view and clearly identify the surface area of the collection tank F".
- the optical devices 8 acquire the images of the filter F seen from the top 2D, so as to view and clearly identify the surface area of the collection tank F".
- the aforesaid optical devices 8 preferably acquire the images of the washing fluid collection zone 2"', and in particular of the collection tank F", throughout the whole washing cycle, at pre-established time intervals or with a predefined acquisition frequency.
- the optical devices are configured to acquire the images of the collection tank F" at the end of each washing cycle.
- 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, 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 blocked filter F condition and/or any modifications to be made to one or more of the 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 blocked filter F condition.
- the method for automatically evaluating the degree of cleanliness of the filtering system of the dishwashing machine comprises a step of acquiring 11 a first digital image 11A representative of a first condition of the filter F, in which the filter F is clean.
- the acquisition step 11 is performed during the production and/or testing and/or initial configuration of the dishwashing machine 1, so as to obtain a first digital image 11A of the filter F in its maximum cleanliness condition.
- 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 comprises a 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 first surface value related to the surface area of the collection tank F" of the filter F in the first condition in which the filter F is clean.
- the method comprises a step of acquiring 13 a second digital image 13A representative of a second condition of the filter F, at the end of the washing cycle.
- the method also comprises the step of digitally processing 14 the second digital image 13A so as to obtain a second processed image 13B, in which the second processed image 13B identifies a second surface value related to the surface area of a possible accumulation of dirt in the collection tank F" of the filter F in the second condition in which, for example, the filter F contains an accumulation of dirt.
- the second surface value of the second processed image 13B can be calculated by subtracting the value of the free surface area of the collection tank F" from the first surface value, where the value of the free surface area represents the part of surface of the second processed image 13B that does not represent the accumulation of dirt in the collection tank F" of the filter F.
- the method comprises a step of comparing 15 the second surface value with the first surface value for calculating an occlusion percentage value OCL of the filter F when passing between the first condition and the second condition.
- the method also comprises the step of generating 16 a dirt presence signal Sig indicative of the presence of an accumulation of dirt in the filter F, when the occlusion percentage value OCL of the filter F exceeds a predefined threshold value.
- the method further comprises the step of generating 17 a sound and/or visual signal indicative of a blocked filter condition, when the dirt presence signal Sig is generated.
- the method also comprises the step 18 of interrupting the cleaning cycle or modifying the parameters of the cleaning program P of the dishwashing machine 1 when the dirt presence signal Sig is generated.
- 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 also comprises the step of modifying 17 the cleaning parameters of the cleaning program P of the dishwashing machine 1 when the dirt presence signal Sig is generated.
- the step of comparing 15 the second surface value with the first surface value comprises the sub-step of calculating the ratio between the second surface value and the first surface value for calculating the occlusion percentage value OCL of the filter F when passing between the first condition and the second condition.
- the step of digitally processing 12 the first digital image 11A so as to obtain the first processed image 11B comprises the sub-step of splitting the surface area of the collection tank F" into a first predefined number of zones N.
- Each zone N has a predefined surface area value.
- the surface area of the collection tank F" is split into a grille composed of a first predefined number of zones N.
- the step of digitally processing 14 the second digital image 13A so as to obtain the second processed image 13B comprises the sub-step of calculating a second number of zones N of the surface area of the collection tank F" occupied by the surface area of the accumulation of dirt in the filter F.
- the step of comparing 15 the second surface value with the first surface value comprises the sub-step of calculating the ratio between the second number of zones N and the first number of zones N to calculate the occlusion percentage value OCL of the filter F when passing between the first condition and the second condition.
- the step of digitally processing 12 the first digital image 11A so as to obtain the first processed image 11B comprises the sub-steps of:
- the step of digitally processing 14 the second digital image 13A so as to obtain the second processed image 13B comprises the sub-steps of:
- the first digital image 11A is representative of a first reference condition of the filter F before the use of the dishwashing machine 1.
- the method comprises a step of starting a washing cycle of the dishwashing machine 1.
- the second digital image 13A is representative of a second condition of the filter F after a predefined time interval following the step of starting the washing cycle and, more preferably, at the end of the washing cycle.
- the step of generating 16 a dirt presence signal Sig indicative of the presence of an accumulation of dirt in the filter F comprises the sub-step of generating 16 the dirt presence signal Sig when the occlusion percentage value OCL of the filter F is greater than or equal to 10%.
- the dirt presence signal Sig occurs when at least 10% of the surface area of the collection tank F" of the filter F is obstructed by debris or accumulations of dirt.
- the method envisages iteratively repeating, during a washing cycle, the step of:
- the step of acquiring 11 the first digital image 11A representative of the first condition of the filter F comprises the sub-steps of storing the first digital image 11A in a database of the dishwashing machine 1.
- the step of generating 17 the sound and/or visual signal comprises the sub-step of signalling through the user interface 9 the sound and/or visual signal indicative of a blocked filter condition, when the dirt presence signal Sig is generated.
- the method comprises the step of signalling through the user interface 9 the blocked filter condition when the dirt presence signal is generated and/or the interruption of the washing cycle 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 dirt in the filter F of the dishwashing machine 1 to be detected.
- the method allows the washing cycle to be interrupted or one or more of the cleaning parameters of the cleaning program P to be modified as a function of the possible presence of dirt.
- the cleaning parameters of the cleaning program that may be modified based on the filter F occlusion percentage detected and 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 second processed image 13B will not have any variation of the image compared to that of the first image processed 11B. Instead, in the presence of filter F occlusion, part of the surface area of the collection tank F" is occupied by an accumulation of dirt/debris and therefore the "blocked filter” condition will be identified.
- a "removal of filter occlusion” condition in the case in which, following the manual cleaning of the filter by a user all or almost all of the occlusion previously detected has been removed, obtaining a filter occlusion percentage value OCL lower than the threshold value. Furthermore, in the same way, it is possible to generate a "clean filter” signal when the occlusion percentage value OCL is equal to zero.
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Washing And Drying Of Tableware (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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IT201800001812A IT201800001812A1 (it) | 2018-01-25 | 2018-01-25 | Metodo per valutare automaticamente il grado di pulizia del sistema di filtraggio in una macchina lavastoviglie. |
Publications (2)
Publication Number | Publication Date |
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EP3517015A1 true EP3517015A1 (fr) | 2019-07-31 |
EP3517015B1 EP3517015B1 (fr) | 2020-09-23 |
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EP19152569.0A Active EP3517015B1 (fr) | 2018-01-25 | 2019-01-18 | Procédé d'évaluation automatique du degré de propreté du système de filtrage dans un lave-vaisselle |
Country Status (4)
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EP (1) | EP3517015B1 (fr) |
CN (1) | CN110074736A (fr) |
ES (1) | ES2835343T3 (fr) |
IT (1) | IT201800001812A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112914455A (zh) * | 2021-01-25 | 2021-06-08 | 佛山市顺德区美的洗涤电器制造有限公司 | 用于洗碗机的控制方法、处理器、装置及洗碗机 |
CN116823363A (zh) * | 2023-08-23 | 2023-09-29 | 中国标准化研究院 | 一种洗碗机性能评级系统及评价方法 |
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2019
- 2019-01-18 ES ES19152569T patent/ES2835343T3/es active Active
- 2019-01-18 EP EP19152569.0A patent/EP3517015B1/fr active Active
- 2019-01-25 CN CN201910073864.9A patent/CN110074736A/zh active Pending
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EP1512363A1 (fr) * | 2003-09-05 | 2005-03-09 | Whirlpool Corporation | Lave-vaisselle avec un filtre |
EP2022385A1 (fr) * | 2007-08-08 | 2009-02-11 | Electrolux Home Products Corporation N.V. | Lave-vaisselle |
US20130032171A1 (en) | 2010-05-04 | 2013-02-07 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher with a screen system |
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CN116823363B (zh) * | 2023-08-23 | 2023-11-21 | 中国标准化研究院 | 一种洗碗机性能评级系统及评价方法 |
Also Published As
Publication number | Publication date |
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CN110074736A (zh) | 2019-08-02 |
EP3517015B1 (fr) | 2020-09-23 |
IT201800001812A1 (it) | 2019-07-25 |
RU2019101620A3 (fr) | 2022-02-25 |
RU2019101620A (ru) | 2020-07-27 |
ES2835343T3 (es) | 2021-06-22 |
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