EP3475477A1 - Verfahren zur verbesserten steuerung eines wasserführenden haushaltsgerätes und hierzu geeignetes haushaltsgerät - Google Patents
Verfahren zur verbesserten steuerung eines wasserführenden haushaltsgerätes und hierzu geeignetes haushaltsgerätInfo
- Publication number
- EP3475477A1 EP3475477A1 EP17728564.0A EP17728564A EP3475477A1 EP 3475477 A1 EP3475477 A1 EP 3475477A1 EP 17728564 A EP17728564 A EP 17728564A EP 3475477 A1 EP3475477 A1 EP 3475477A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- drum
- control device
- spectrometer
- household appliance
- 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
Links
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
- D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/57—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/06—Type or material
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/42—Detergent or additive supply
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/58—Indications or alarms to the control system or to the user
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/58—Indications or alarms to the control system or to the user
- D06F2105/60—Audible signals
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/04—Signal transfer or data transmission arrangements
- D06F34/05—Signal transfer or data transmission arrangements for wireless communication between components, e.g. for remote monitoring or control
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
Definitions
- the invention relates to a method for operating a water-conducting household appliance with a drum for receiving objects to be treated, which has at least one perimeter with at least one radiation passage, a control device, a spectrometer, which comprises at least one radiation source, at least one radiation detector and a microcomputer, wherein Microcomputer and control device are set up to exchange information with each other, so that data can be exchanged between spectrometer and control device.
- the invention also relates to a suitable for carrying out this method water-conducting household appliance. For cleaning articles in water-bearing household appliances washing and cleaning agents are usually used.
- the composition of such detergents and cleaners is usually complex, in addition to washing-active substances, so-called surfactants, bleaches, enzymes, water softeners, etc.
- surfactants are often included.
- the surfactants are of great importance, since they reduce the interfacial tension at the water-fat interface and are thus crucial for optimal removal of contaminants from, for example, textiles.
- anionic surfactants especially alkylbenzenesulfates, are used.
- treating agent The amount of detergent or cleaning agent required for an optimal cleaning process (hereinafter collectively referred to as treating agent) can generally not be predicted because of factors such as the type and degree of soiling, the amount of loading or also the material of the objects to be treated , For example, the type of textile depends. In the usual household use of treatment products is currently generally no precise determination of the actual needs.
- the publication DE 10 2012 017 323 A1 describes a water-conducting household appliance, in particular a laundry treatment appliance for washing laundry, having a treatment area, a metering pump, at least one treatment agent container and a display device, wherein the treatment agent container is used for receiving a quantity of a flowable treatment agent which is used for several Treatments in the treatment area is sufficient.
- the amount of the treatment agent delivered by the metering pump is displayed by the display device and / or a residual amount of the treatment agent in the treatment agent container is displayed by the display device.
- the publication DE 10 2010 002 773 A1 describes a dosing system comprising a dosing device which can be positioned inside a water-conducting domestic appliance for dispensing at least one preparation into the interior of the water-bearing domestic appliance, a cartridge which can be coupled to the dosing device for storing at least one flowable preparation, and a conductivity sensor , which is positioned in or on the dosing device so that a conductivity determination of washing or rinsing water during operation of the water-conducting household appliance is possible.
- the dosing system further comprises a control unit which is coupled at least to the conductivity sensor, wherein at least one preparation has a conductivity of at least 500 ⁇ 5 / ⁇ , preferably at least 750 ⁇ 5 / ⁇ , particularly preferably at least 1000 ⁇ / ⁇ , most preferably at least 2,500 ⁇ / ⁇ and the dosing device is configured so that at least 20 ml, preferably at least 30 ml, more preferably at least 50 ml of this preparation is discharged during operation of the water-conducting household appliance from the dosing device inside the water-bearing household appliance ,
- the publication DE 10 2010 039 61 1 A1 describes a dishwasher, in particular a domestic dishwasher, with a control device, in which at least one washing program for executing a washing cycle comprising several partial washing cycles is stored for cleaning and / or drying items to be washed, and with an operating device for the input of Operating commands for the control device.
- At the operating device is at least one operating command for executing a or several adaptation measures can be entered at least one of the washing programs, by means of which the avoidance of stains on the items to be washed and / or the drying result on the item to be washed is improved when the washing cycle is carried out on the basis of the adapted washing program.
- the publication DE 10 2014 212 294 A1 describes a water-conducting domestic appliance with a number of actuators for performing a plurality of wash programs, a user interface for selecting one of the wash programs, a sensor for providing a sensor signal for indicating a parameter of a wash liquor used for washing items to be washed a determining unit for determining a sensor setting from a plurality of predetermined sensor settings for the sensor, a control unit configured to drive the actuators for performing the selected washing program by signal processing using the sensor signal, and an adjusting unit for adjusting the signal processing depending on the certain sensor setting.
- radiation sensors e.g. IR sensors
- IR sensors for the detection of textile types, level and amount of water in the drum of washing machines and dryers.
- the publication WO 2001/046509 A1 describes a device for treating textiles with a device for detecting properties of a textile, wherein the device comprises at least one transmitting and at least one receiving element for transmitting or receiving electromagnetic radiation as well as an evaluation circuit connected to the receiving element in which the radiation emitted by the transmitting element and reflected and / or transmitted by the textile is receivable by the receiving element and can be evaluated in the evaluation circuit.
- the publication DE 10 2015 100 395 A1 describes a spectrometer, in particular for installation in a sensor module with a radiation source and following, a beam path defining or along the beam path arranged components: a sample space for a fluid to be examined, a first lens, a diffraction element , a second lens, and a detector. Between the Sample space and the diffraction element is provided a restriction aperture for limiting the effective diameter of the incident on the diffraction element beam.
- the publication EP 0 816 551 B1 discloses an infrared temperature detection for a drum dryer control, in particular a dryer with a rotary drum for receiving and for spinning moist articles to be dried, a heater for heating the articles, a blower unit for passing air over the articles in FIG the drum and an infrared detecting device which provides a control signal corresponding to the temperature of the articles in the drum. There is also disclosed a method of detecting the completeness of a drying pass in a rotary drum dryer and an infrared sensing device which provides a measurement of the temperature of the articles in the drum.
- the publication EP 1242665 B1 describes a device for the treatment of textiles with an evaluation circuit for detecting the type of textile and / or the moisture of a piece of laundry. The device uses transmitting and receiving elements for transmitting or receiving electromagnetic radiation as well as an evaluation circuit connected to the receiving element. Described is also a method for detecting properties of a piece of textile, for example in a washing machine or a tumble dryer.
- U.S. Patent No. 5,396,715 describes a microwave clothes dryer and fire protection method wherein the temperature within the drum is registered by means of an IR sensor and, upon reaching a predetermined value indicating the burning of laundry, stops the operation of the dryer becomes.
- the invention thus relates to a method for operating a water-conducting domestic appliance having a drum for receiving objects to be treated, which has at least one perimeter with at least one radiation passage, a control device, a spectrometer which comprises at least one radiation source, at least one radiation detector and a microcomputer in which microcomputers and control devices are set up for exchanging information with one another so that data can be exchanged between spectrometer and control device, wherein it comprises the following steps:
- radiation transmission or “radiation-transmissive” is to be interpreted broadly.
- Radiation-transmissive in the sense of the invention may mean the transmission of radiation in the entire spectral wavelength range or also to, for example Obtain one or more defined wavelength ranges of the spectrum, such as infrared radiation or UV radiation.
- the configuration of the at least one radiation passage is not restricted according to the invention. It may be a material recess in the drum, but also be, for example, an inlay made of radiation-permeable material, such as quartz glass or a plastic.
- the radiation passage according to the invention is generally arranged on a lateral drum wall.
- the shape of the radiation passage is not limited according to the invention, it may be a circular hole, but it may also be an elliptical recess or a rectangular or Perimeterumspannendes annular inlay. Likewise, size is essentially limited only by size that is reasonable or permitted for a given operation.
- the at least one radiation passage serves for the fact that radiation from a radiation source into the interior of the drum and reflected radiation can pass out of the drum again.
- the drum is stationary during the implementation of the process or is in motion, so for example rotated or reversed.
- the method according to the invention can be carried out both when the drum is at a standstill and when the drum is moving.
- the method additionally comprises the step of (a) rotating the drum at a predetermined speed Dz.
- step (b) of the method according to the invention the at least one radiation passage with a specific frequency ADS will generally pass through a position which allows the radiation to enter and exit the drum in step (b) of the method according to the invention.
- This position is also referred to below as the corresponding position.
- step (a) the drum rotates at a speed Dz of 20 to 200 rpm, more preferably at a speed Dz of 40 to 80 rpm.
- Step (b) of the method according to the invention provides that radiation is emitted from the at least one radiation source in a wavelength range from ⁇ - 1 to ⁇ 2 .
- the emission of the radiation takes place continuously in step (b).
- the at least one radiation source of the spectrometer emits radiation without interruption during the implementation of the method according to the invention. In this way it can be ensured that during movement of the drum, regardless of ads, in each case radiation is radiated into the interior of the drum when the at least one radiation passage is in the corresponding position.
- step (b) the radiation is emitted at a predetermined radiation pulse frequency AD E.
- the height of the pulse rate is not limited according to the invention.
- the radiation pulse frequency AD ED is advantageously selected to coincide with the frequency ADS with which the at least one radiation passage passes through the corresponding position.
- a relationship is stored in the control device which synchronizes the radiation pulse frequency AD E with the frequency ADS which depends on the rotational speed of the drum Dz.
- a predetermined starting position of the drum is taken into account.
- the radiation detector registers, as a measuring signal, the radiation reflected by objects located in the drum in at least a period ⁇ .
- the length of the period ⁇ is not limited in the method according to the invention. However, it will depend on different variables. The length of the period ⁇ may depend in particular on whether the drum is stationary or in motion.
- the drum rotates at a speed Dz such that the at least one radiation passage with a frequency ADS passes through the position which allows the radiation to enter and exit from the drum in step (b) of the method according to the invention
- the length of the time interval ⁇ certainly depend on this frequency. It is true that the length of ⁇ with higher frequency ADS, so increasing speed Dz can decrease.
- the length of the period ⁇ can also increase with increasing size of the at least one radiation passage. If, for example, at constant rotational speed Dz of the drum, the at least one radiation passage is dimensioned larger, ⁇ will also be greater, since radiation reflected over a relatively long period of time can pass outwardly from the interior of the drum to the at least one radiation detector. Furthermore, the length of the period ⁇ will certainly also depend on the technical design of the radiation detector itself, with higher-quality radiation detectors, for example, can detect measuring signals with a high accuracy even in relatively short periods. Particularly preferably, the length of the at least one time period ⁇ is in the range of 1 ms to 100 ms. Most preferably, however, ⁇ is in the range of 1 ms to 10 ms.
- the length of the period ⁇ can also be based, for example, on the Allan variance.
- the allan variance sets the mean value ü of measurement signals obtained in a first time interval i of length ⁇ , with the mean value u of the measurement signals obtained in a second time interval i + 1 of length ⁇ , and the number of time intervals M according to the following formula (1) in relation.
- the statistical noise of measurement signals can be reduced down to the 1 / f noise.
- the signal-to-noise ratio can be advantageously set via a variation of the length of a time interval ⁇ to x A nan, and thus the quality of the measurement signals can be improved.
- the radiation reflected by objects located in the drum is registered by the at least one radiation detector as a measuring signal.
- the invention makes it possible to also determine properties of an aqueous liquid, for example a wash liquor, or a gas phase in a water-conducting domestic appliance.
- an aqueous liquid for example a wash liquor, or a gas phase in a water-conducting domestic appliance.
- part of the emitted radiation is reflected by the drum, that is, does not pass through the radiation passages.
- the radiation reflected on the drum can then be evaluated in principle with regard to components of the aqueous liquid or the gas phase.
- Objects in the drum can be measured by the method according to the invention before, during and / or after treatment in the water-conducting domestic appliance.
- Measurement comprises the application of radiation from the at least one radiation source of the spectrometer, as well as the registration of the measurement signal in the at least one period ⁇ by the at least one radiation detector.
- Articles before treatment herein include articles which have not yet undergone any treatment in the water-bearing domestic appliance.
- Articles to be treated may therefore be articles requiring, for example, a refreshment, one or more types of soiling or the like.
- objects to be treated will be at least partially dry objects.
- Objects during and / or after a treatment comprise all objects which have undergone and / or have undergone at least one treatment in the household appliance.
- the term treatment is to be understood broadly.
- a treatment is carried out according to the invention controlled by the control device. It may be the mere moistening with a predetermined amount of water W F , but also the partial or complete implementation of a treatment program.
- Treatment programs within the meaning of the invention are a part of operating programs, which can be carried out in a water-conducting household appliance.
- a treatment program can be a treatment program implemented in the factory in a water-bearing household appliance, one or more additional options or even a user-defined treatment program.
- the term treatment program is therefore also to be interpreted very broadly herein.
- different numbers of treatment programs will be stored in the control device. For example, a high-priced home appliance will have more treatment programs than a low-priced one.
- control device and / or in an external server data on a wavelength-dependent reflection behavior of at least one type of textile, but preferably several types of textiles in the drum are stored so that they can be used for the measurement in step (b) and the evaluation in step (c) of the method according to the invention.
- Textile types are for example cotton, silk, polyester, linen, acrylic or mixed fabrics. Namely, with the method according to the invention it is e.g. it is possible to identify individual textile pieces in the drum on the basis of the evaluated measuring signal (s).
- Data for the wavelength-dependent reflection behavior are preferably deposited in such a way that the plurality of individual wavelengths and / or partial regions within the wavelength range from ⁇ - 1 to ⁇ 2 comprise at least one wavelength in which no radiation is reflected. It is again preferred that the plurality of individual wavelengths and / or partial regions within the wavelength range from ⁇ - 1 to ⁇ 2 comprise at least five wavelengths or wavelength ranges.
- the wavelength range D- 1 to D 2 is in the infrared.
- the wavelength range from ⁇ - 1 to ⁇ 2 comprises at least one absorption band of at least one textile type.
- step (b) it is also advantageous if data for a wavelength-dependent reflection behavior of at least one textile type with at least two degrees of moisture are stored in the control device and / or in an external server so that they are suitable for measuring in step (b) and the evaluation in step (c ) of the method according to the invention can be used.
- the water-conducting household appliance is a washer-dryer
- the drying process can be controlled very precisely with regard to a desired residual moisture level.
- the moisture level before the start of the Drying process can of course be determined, so that an adaptation of the drying program to the type of textile and moisture level is then very possible.
- the wavelength range from ⁇ - 1 to ⁇ 2 then preferably comprises at least two absorption bands of a treatment agent. This allows a more precise determination of a content of treatment agent.
- treatment agent is to be interpreted broadly according to the invention and includes any solid and / or liquid preparation which is suitable for bringing about a treatment result of objects to be treated in a water-conducting domestic appliance Proportion of surfactants, in particular of anionic surfactants, such as alkylbenzenesulfates, in such preparations being high, as a rule usually more than 80%, For example, a surfactant concentration can be used to determine an amount of treatment agent.
- the measurement signals will depend very much on the treatment agent.
- the reflection and absorption properties for at least one, preferably a plurality of treatment agents are advantageously stored in the control device and / or an external server so that these properties can be used for the measurement in step (b) and the evaluation in step (c).
- the performance of the method according to the invention it is also possible for the performance of the method according to the invention to be restricted to particularly customary treatment agents, in particular detergents, and to adopt these as an indication of the amount of treatment agent, if appropriate.
- the wavelength range from ⁇ 1 to ⁇ 2 particularly preferably comprises oscillation bands which are in the range of 1100 nm, 1400 nm, 1700 nm, 1900 nm, 2100 nm or in the range of 2300 to 2500 nm, in particular two.
- oscillation bands which are in the range of 1100 nm, 1400 nm, 1700 nm, 1900 nm, 2100 nm or in the range of 2300 to 2500 nm, in particular two.
- Standard contaminants within the meaning of the invention are contaminants which cover in their properties the entire range of possible contaminants on objects to be treated.
- Standard contaminants are, for example, fats or oil from food residues, dyes such as tomatoes or red wine or grass, proteinaceous soils such as egg yolks, etc.
- a user it is also preferable for a user to be able to select allergens to be detected via an operating unit. In this way, he can thus additionally modify the method according to the invention according to his needs.
- control device and / or an external server data for a wavelength-dependent reflection behavior for at least one, but preferably a plurality of volatile substances are deposited, so that they can be used for the measurement in step (b) and the evaluation in step (c) of the method according to the invention.
- Volatile substances can be, for example, odoriferous substances which are released by organic impurities or microorganisms.
- a self-cleaning program can be selected by the control device or adjusted accordingly to eliminate these impurities and thus alert the user to inadequate hygiene.
- volatile substances can also be gases, such as propane, which can be used in heat pump tumble dryers.
- a running program can be interrupted and a warning given to the user. Such a warning can then take place optically via a display, that is to say in word and / or picture and / or by means of luminous signals, but also by a warning tone.
- the household appliance according to the invention is integrated in a wireless network, a security warning to a user, e.g. via an app or SMS, done and / or a notification to the fire department.
- the method according to the invention provides in step (d) that the control device selects and / or adapts an operating program for the objects located in the drum in relation to the evaluated measuring signal on the basis of the measured signal evaluated and transmitted in step (c).
- Operating program is to be understood broader here than the term treatment program, as already described above.
- Operating programs include treatment programs and, moreover, also program procedures which are implemented in addition to the treatment programs in the water-bearing household appliance.
- An operating program can therefore also be, for example, a self-cleaning program, but the output of information to a user, for example via a display device, or the transmission of information for example via a wireless data connection in the context of a network connection is hereby included under the term operating program.
- Operating programs thus comprise all actions that can be carried out by the control device in a household appliance according to the invention.
- the control device for example, the treatment program accordingly in relation adjust to the treatment of silk to prevent damage to this garment. This can be done for example by a temperature and / or rotational speed and / or rotational rhythm adjustment.
- control unit Prior to starting the control unit outputs the detection of silk to the user and proposes a soft program accordingly. Here, the user then additionally has the opportunity to remove the silk laundry from the drum again.
- the microcomputer For evaluating the measurement signals in step (c), the microcomputer generally generates at least one spectrum from the spectral measurement signal.
- the number of spectra generated is not restricted, but it will also depend in particular on the number and length of the time intervals ⁇ .
- a spectrum is generally normalized to a standard. In this way, a comparison of a recorded spectrum with, for example, a calibration spectrum is possible, but it can also be several recorded spectra together be adjusted, for example, to track the decrease of a certain amount of a substance.
- Spectralon is preferably used as the standard.
- a baseline can also be recorded before the method according to the invention is carried out.
- a more accurate analysis can be achieved by subtracting the baseline from the evaluated measurement signals.
- the drum reverses briefly after each pass of the process. In this way, a good mixing of the objects in the drum can be achieved and thus a good measurement statistics. The method is then preferably repeated until the evaluated measurement results no longer change significantly.
- laundry containers can also be arranged in the drum for better mixing of laundry items.
- Evaluation routines for the qualitative and quantitative evaluation of spectra are generally diverse and will generally depend on the received measurement signals. According to the evaluation routine is therefore also not limited.
- an evaluation based on the Lambert-Beer law is carried out by means of multivariate data analysis, that is, for example, a principal component analysis with the non-linear iterative partial least squares algorithm and subsequent partial least squares regression, from which a response matrix is obtained can be.
- control device is also configured to store evaluated measurement signals.
- the control device can thus also gather empirical values by means of which the operation of the water-conducting domestic appliance can be continuously optimized. In this way, the needs of a user can be considered individually and the most environmentally friendly operation of the household appliance can be realized.
- the method additionally comprises a step (e), cleaning the spectrometer.
- the way in which the spectrometer optics are cleaned is not limited according to the invention.
- cleaning may already be carried out by bringing it into contact with aqueous liquid in the course of a treatment program, if the household appliance according to the invention is, for example, a washing machine or a washer-dryer.
- the household appliance according to the invention is, for example, a washing machine or a washer-dryer.
- the invention also relates to a water-conducting domestic appliance having a drum for receiving objects to be treated, which has at least one perimeter with at least one radiation passage, a control device, a spectrometer comprising at least one radiation source, at least one radiation detector and a microcomputer, wherein microcomputer and Control means are arranged for exchanging information with each other, so that data can be exchanged between the spectrometer and the control device, wherein the control device is set up for carrying out a method comprising the following steps:
- steps (b) to (d) are performed one or more times.
- the water-conducting domestic appliance is preferably selected from the group comprising a washing machine, a washer-dryer, a tumble dryer and a dishwasher.
- the water-conducting domestic appliance is preferably a washing machine or a washer-dryer.
- the water-bearing household appliance is a washing machine.
- the household appliance according to the invention generally has a treatment agent container and preferably also a dosing unit.
- the type and configuration of the dosing unit is not limited according to the invention. It may be a dosing unit for the manual dosing of treatment agent or an automated dosing unit.
- the dosing unit is an automated dosing unit which is connected to the control device and can be controlled by the latter in order to meter treatment agent, for example if the dosing quantity C op t falls below an optimum.
- the drum has a predetermined start / stop position.
- the manner in which such a star stop position of the drum is implemented in the water-conducting domestic appliance is not restricted according to the invention. It may be, for example, a mechanical design, but it may also be a certain drum position stored in the control device, which is driven, for example, before carrying out the method according to the invention.
- the arrangement of the spectrometer in water-conducting household appliance is limited according to the invention only insofar as that the exposure to radiation in a wavelength range of ⁇ - ⁇ to ⁇ 2 through the at least one radiation passage, as well as the registration of the objects located in the drum radiation reflected by the at least a radiation passage in at least one time interval ⁇ is possible.
- the arrangement may be different depending on the embodiment of the household appliance and depends inter alia on the type and structure of the water-conducting household appliance.
- the water-conducting domestic appliance is a washing machine or a washer-dryer with a tub and a drum for receiving laundry items
- the spectrometer is arranged in a recess of the tub jacket.
- the spectrometer is then also arranged pivotably and the orientation of the spectrometer can be controlled by the control device such that preferably several, generally perpendicular to the perimeter spaced, perimeter of the drum with preferably each of a plurality of radiation passages, in particular holes, can be detected.
- the configuration of the at least one radiation passage is not restricted according to the invention.
- the at least one radiation passage is a circular hole.
- the diameter of the hole along the outside of the drum, ie in particular along the mantle surface of the drum is 2 to 8 mm.
- the drum may also have a plurality of holes along the at least one perimeter.
- the at least one perimeter is a perforated ring designed. Particularly preferably, the drum has a plurality of such perforated rings.
- the at least one radiation passage is an elliptical hole.
- the large half-axis is ⁇ 10 mm long, in particular 2 to 5 mm, and the small half-axis is preferably ⁇ 2 mm long.
- the at least one radiation passage is a transparent plastic inlay.
- the shape and size of the transparent plastic inlay is not restricted according to the invention. It may be a long-elongated ellipse or a long-elongated rectangle, with the respective longer extent preferably being arranged in the perimeter direction.
- the plastic inlay can, for example, but also be a plastic ring.
- the plastic used for the inlay is IR-transparent.
- the arrangement of the at least one radiation source and the at least one radiation detector relative to one another is selected according to the invention so that reflected radiation can be detected.
- the at least one radiation source is not restricted according to the invention, so that, for example, an infrared (IR), ultraviolet (UV) or UV-VIS (ultraviolet and visible region) radiation source can be used.
- the at least one radiation source can be a broadband source, a tunable radiation source, but also a narrowband radiation source, such as an IR LED.
- the radiation source can also have optical aids, such as a focusing optics, filter plates, filter films or lacquers, or else a MOEMS Fabry-Perot frequency filter, which has a Setting a wavelength range can allow.
- the spectrometer may also have a plurality of such radiation sources, which may also be different.
- the at least one radiation source is a broadband source for emitting radiation in the infrared range.
- the radiation source is used to emit near-infrared radiation and is selected from the group consisting of a tungsten-halogen lamp and a MOEMS black body radiator.
- the at least one radiation detector is not restricted according to the invention.
- the radiation detector can, for example, be a broadband detector with at least one sensitive detector surface N.
- the radiation detector can also have a plurality of sensitive surfaces N, or else a linear array of detector surfaces N, for example in the form of pixels.
- the detector may additionally comprise optical aids, such as a MOEMS Fabry-Perot frequency filter, narrow-band filters or a dispersive wedge.
- the material from which the radiation detector is made, is not limited according to the invention. However, the radiation detector preferably consists at least of a semiconductive material.
- the radiation source can be a tungsten halogen lamp with 5 filter plates for narrow-band excitation.
- the radiation detector then generally has 5 sensitive detector surfaces to detect the back-reflected radiation.
- the radiation source may also comprise narrow-band IR LEDs, with preferably 5 such LEDs being provided with multiplexing.
- the radiation detector then has N sensitive detector surfaces and consists at least partially of indium gallium arsenide.
- the radiation source of the spectrometer may also be a MOEMS black body radiator.
- the radiation detector then preferably consists of a sensitive Detector surface N and has a MOEMS Fabry-Perot frequency filter. In this way, a narrow band frequency sweep can be performed by the wide band.
- the radiation source may be a DFB laser and the radiation detector may have a sensitive detector surface N.
- the sensitive detector surface preferably consists at least partially of germanium. In this way, it is preferably possible to measure time-dependent.
- the water-bearing domestic appliance preferably additionally has an interface for wireless data transmission, wherein the microcomputer and the controller are then set up for wireless exchange of information with each other.
- the microcomputer can then also preferably be an external server or be implemented on this.
- the water-conducting household appliance is also suitable for operation in a network and can be operated by means of an external operating unit, such as a mobile phone and / or a tablet PC preferably via an app.
- the water-conducting household appliance is then integrated into a home network with at least one further household appliance.
- information for controlling operating programs can then be transferred from one household appliance to another.
- the water-conducting domestic appliance is, for example, a washing machine
- a determined residual moisture content for washed items of laundry can be transferred to a dryer in the home network and the drying program to begin with can then be adapted precisely to the residual moisture content.
- household appliances have at least one display unit, which can be designed to output information in the form of text, image and / or characters, colored and / or black and white, static and / or animated.
- information and / or warnings can be output to a user via the display device.
- the display device is a external display device, such as the touch screen of a smart phone or tablet PC.
- the invention has numerous advantages. So far, it has not been possible to measure objects in the drum of a water-bearing household appliance even during drum movements at only a small distance with a spectrometer. By contrast, the invention makes it possible to determine directly with only a small "sample-to-detector" distance, so that the ongoing treatment program can be individually controlled and, for example, treatment agents can be saved by adjusting the amount of treatment agent in the dosing phase individually to the prevailing conditions, ie, for example, the amount of loading Because it has been found that a user tends to over-dose the treatment agent, in this way the treatment of objects in a water-conducting domestic appliance such as a washing machine can be carried out more environmentally friendly with the invention.
- the determination of textiles may predetermine the destruction of textiles in the event of a user's misloading, such as when silk is to be accidentally washed with wool. Furthermore, the safety for a user is also increased, since volatile substances, such as propane gas, which may be released during operation of a propane gas heat pump dryer, for example, can be detected by the method according to the invention.
- volatile substances such as propane gas
- the determination of microbiologically relevant substances can also improve hygiene in the household appliance.
- a determination of the degree of moisture also allows tailor-made implementation of washing and drying programs.
- FIG. 1 shows a non-limiting embodiment of a water-conducting household appliance suitable for carrying out the method according to the invention in the form of a washing machine, in which the spectrometer is positioned in the tub casing within a recess.
- FIG. 2 shows, in one embodiment, a schematic representation of the measuring principle on which the method according to the invention is based.
- FIG. 1 shows a water-conducting domestic appliance 1 designed as a washing machine for carrying out the method according to the invention.
- the washing machine 1 has a housing 12, in which a tub 2 is arranged, in which a drum 3 for receiving laundry is rotatably mounted about an axis perpendicular to the plane axis.
- the highest achievable in the tub 2 water level 25 is shown schematically by a solid horizontal line.
- a lye container discharge line 17 is connected to a drain opening 26 in a bottom of the tub 2, which leads via a lint 19 to a suction side of a pump 14.
- a drain line 13 is connected to a pressure side of the pump 14.
- the pump 14 is drivingly connected to a speed-controlled drive motor 20, which may be configured, for example, as a permanent-magnet, multi-phase synchronous motor with MOSFET device and a power detector 15.
- the drain line 13 opens outside the housing not shown here in a domestic drainage or a floor drainage.
- FIG. 1 also shows an automated dosing unit 8 for treatment agent, which is connected to an induction bowl 11.
- the dispenser 1 1 is the liquor tank 2 from a fresh water line 10 stemming water fed.
- a check valve 9 in the fresh water line 10 which is controlled by a control device 18 according to a treatment program sequence.
- the IR spectrometer 21 comprises a broadband radiation source 5 which can emit IR radiation in the near infrared region and which is realized here as a tungsten halogen lamp in this non-limiting embodiment. In this way, radiation from the IR spectrometer 21 can be emitted in a continuous spectrum of 300 nm to 3 Dm.
- the IR broadband source By means of the IR broadband source, the absorption bands of polyester are intended to be excited in a broadband manner in this embodiment in this embodiment.
- Polyester shows absorption bands among others at 1 180nm, 1237nm, 1266nm, 1285nm, 1322nm, 1387nm, 1410nm, 1483nm, 1514nm, 1594nm, 1661nm, 1908nm, 1953nm, 2083nm, and 2136nm.
- Other types of textiles show corresponding characteristic absorption bands in this wavelength range, which can also be excited in broadband in embodiments.
- the absorption bands of the frequently used surfactant LAS can also be used for the measurement. These are in the range of 1100 nm, 1400 nm, 1700 nm, 1900 nm, 2100 nm and in the range of 2300 to 2500 nm.
- the measuring range ( ⁇ - 1 to ⁇ 2 ) ranges from 900 nm to 1700 nm In this way, in embodiments, in addition to the identification of textile types, it is also possible, for example, to determine a type and / or quantity of treatment agent.
- the degree of moisture can be determined from the superposition of the water bands on the basis of the decreasing broadband intensity of the textile bands with increasing water content.
- the IR spectrometer 21 also includes a radiation detector 7, which in this non-limiting embodiment is an indefinite indium gallium arsenide single-pixel non-cooled detector. It is also possible to use a matrix detector, in particular a matrix sensor with a linear line array. The detector 7 is preceded by a MOEMS Fabry-Perot frequency filter (not shown). In this way, in this embodiment, the time-dependent broadband spectrum can be obtained by varying the resonator plate pitch.
- the drum 3 has in this embodiment a perforated ring 35, wherein the holes are circular and have a diameter on the drum outer side of 2 to 5 mm, for example 2 mm.
- the IR spectrometer 21 is arranged such that from the IR radiation source 5 continuously emitted IR radiation through each hole of the perforated ring 35 can get into the interior of the drum 3, so that the Laundry pieces 22 are acted upon in the drum 3 with the emitted radiation and the radiation detector 7 can register the reflected radiation through the hole as a measurement signal.
- the drum 3 rotates in this embodiment at a speed of 60 U / min in the direction indicated by the arrow 23 rotation.
- the period ⁇ , in which the radiation detector 7 then registers the measurement signal in each case, is 1 ms in this embodiment.
- the measurement signals registered by the radiation detector 7 are obtained here as a sensor signal (reflection) as a function of the time t and can then be converted into the broadband spectrum and evaluated with the aid of an evaluation routine stored in the microcomputer 6.
- the microcomputer 6 is integrated therein into the spectrometer 21.
- FIG. 2 shows a schematic representation of the measuring principle on which the method according to the invention is based.
- the measuring principle is based on a reflection measurement.
- a radiation source S, 27 is located in the drum of a water-bearing household appliance textile piece 34 with radiation 31.
- the exposure to radiation 31 takes place through a hole in the drum outer wall 30 having a diameter D L , wherein a possible correct irradiation of the hole is advantageous.
- a diffuse return reflection of radiation is described by the Lambert-Beer law.
- the diffused back-reflected radiation 32 is then detected by the radiation detector D, 28 within a detector acceptance angle, referred to herein as a measurement spot 36.
- the arrow 33 indicates the direction of rotation of the drum.
- the period ⁇ in this embodiment is D L / U * Dz where U is the circumference of the drum.
- the period ⁇ can thus be varied, for example, by a variation of the height of the rotational speed Dz, of the drum circumference U and of the hole diameter DL.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL17728564T PL3475477T3 (pl) | 2016-06-24 | 2017-06-08 | Sposób ulepszonego sterowania prowadzącego wodę urządzenia gospodarstwa domowego i odpowiednie do tego urządzenie gospodarstwa domowego |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016211328.3A DE102016211328A1 (de) | 2016-06-24 | 2016-06-24 | Verfahren zur verbesserten Steuerung eines wasserführenden Haushaltsgerätes und hierzu geeignetes Haushaltsgerät |
| PCT/EP2017/063992 WO2017220336A1 (de) | 2016-06-24 | 2017-06-08 | Verfahren zur verbesserten steuerung eines wasserführenden haushaltsgerätes und hierzu geeignetes haushaltsgerät |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3475477A1 true EP3475477A1 (de) | 2019-05-01 |
| EP3475477B1 EP3475477B1 (de) | 2021-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| EP17728564.0A Active EP3475477B1 (de) | 2016-06-24 | 2017-06-08 | Verfahren zur verbesserten steuerung eines wasserführenden haushaltsgerätes und hierzu geeignetes haushaltsgerät |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3475477B1 (de) |
| CN (1) | CN109312520B (de) |
| DE (1) | DE102016211328A1 (de) |
| PL (1) | PL3475477T3 (de) |
| RU (1) | RU2703470C1 (de) |
| WO (1) | WO2017220336A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210277565A1 (en) * | 2016-07-15 | 2021-09-09 | Henkel Ag & Co. Kgaa | Method and apparatus for determining especially a cleaning strategy |
| DE102017209135A1 (de) * | 2017-05-31 | 2018-12-06 | BSH Hausgeräte GmbH | Verfahren zur Steuerung eines wasserführenden Haushaltsgerätes und hierzu geeignetes Haushaltsgerät |
| DE102017209859A1 (de) * | 2017-06-12 | 2018-12-13 | Henkel Ag & Co. Kgaa | Verfahren und Vorrichtung zur Ermittlung eines Behandlungsparameters einer Textilie anhand der Verunreinigungszusammensetzung und Textileigenschaft |
| KR102620642B1 (ko) | 2017-06-12 | 2024-01-03 | 헨켈 아게 운트 코. 카게아아 | 불순물 조성 및 직물 특성을 이용하여 직물의 처리 매개변수를 확인하기 위한 방법 및 디바이스 |
| DE102017215949A1 (de) * | 2017-09-11 | 2019-03-14 | BSH Hausgeräte GmbH | Handgerät zur verbesserten Wäschebehandlung, System mit einem solchen Handgerät und Verfahren zu seinem Betrieb |
| DE102017223324A1 (de) * | 2017-12-20 | 2019-06-27 | BSH Hausgeräte GmbH | Verfahren zum Betrieb eines wasserführenden Haushaltsgerätes mit einem Spektrometer und hierzu geeignetes Haushaltsgerät |
| DE102019202818A1 (de) * | 2019-03-01 | 2020-09-03 | BSH Hausgeräte GmbH | Verfahren zum Zusammenstellen einer Beladung eines Wäschepflegegeräts |
| EP3715521B1 (de) | 2019-03-27 | 2025-10-08 | Electrolux Appliances Aktiebolag | Wäschebehandlungsgerät mit trockenschätzung der wäschebeladung |
| US12011134B2 (en) * | 2020-01-14 | 2024-06-18 | Midea Group Co., Ltd. | Washing apparatus including cloud connected spectrometer |
| BE1029768B1 (de) * | 2021-09-20 | 2023-04-17 | Miele & Cie | Verfahren zum Überwachen eines Beladungszustands eines Spülgeräts, Vorrichtung und Spülgerät |
| DE102021126051B3 (de) * | 2021-10-07 | 2023-03-23 | Emz-Hanauer Gmbh & Co. Kgaa | Vorrichtung, Haushaltsgerät und Verfahren zur Erkennung von Stoffgruppen in einem Fluid innerhalb eines Haushaltsgerätes sowie Verfahren zur Anpassung eines Reinigungsprozesses eines wasserführenden Haushaltsgerätes |
| DE102023118126A1 (de) | 2023-07-10 | 2025-01-16 | Miele & Cie. Kg | Verfahren und Steuereinheit zum Steuern eines Textilreinigungsgerätes |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130312202A1 (en) * | 2011-08-15 | 2013-11-28 | Whirlpool Corporation | Method for real time determination during loading of volumetric load size in a laundry treating appliance |
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|---|---|---|---|---|
| US5396715A (en) | 1994-06-09 | 1995-03-14 | Electric Power Research Institute | Microwave clothes dryer and method with fire protection |
| US5651192A (en) | 1996-07-01 | 1997-07-29 | White Consolidated Industries, Inc. | Infrared temperature sensing for tumble drying control |
| DE19855503B4 (de) * | 1998-12-01 | 2006-12-28 | BSH Bosch und Siemens Hausgeräte GmbH | Wäschebehandlungsmaschine |
| DE19961459A1 (de) | 1999-12-20 | 2001-07-12 | Bsh Bosch Siemens Hausgeraete | Gerät zur Behandlung von Textilien mit einer Auswerteschaltung zur Erkennung der Textilart und/oder der Feuchte eines Wäschestücks |
| JP3739377B2 (ja) * | 2003-12-10 | 2006-01-25 | シャープ株式会社 | 洗濯乾燥機 |
| JP2010223871A (ja) * | 2009-03-25 | 2010-10-07 | Sharp Corp | 汚染検知装置、汚染浄化システム、および、洗濯機 |
| DE102010002773A1 (de) | 2010-03-11 | 2011-09-15 | Henkel Ag & Co. Kgaa | Dosiersystem mit Dosierkontrolle für ein wasserführendes Haushaltsgerät |
| DE102010039611A1 (de) | 2010-08-20 | 2012-02-23 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine mit einem manuell anpassbaren Spülprogramm |
| DE102012017323A1 (de) | 2011-09-23 | 2013-03-28 | BSH Bosch und Siemens Hausgeräte GmbH | Wasserführendes Haushaltsgerät mit einer Dosiereinrichtung und einer Anzeigeeinrichtung |
| JP2014014561A (ja) * | 2012-07-10 | 2014-01-30 | Seiko Epson Corp | 洗浄装置、及び洗浄方法 |
| DE102015100395B4 (de) | 2014-02-03 | 2020-06-18 | Bürkert Werke GmbH | Spektrometer und Fluid-Analysesystem |
| DE102014212294A1 (de) | 2014-06-26 | 2015-12-31 | BSH Hausgeräte GmbH | Wasserführendes Haushaltsgerät |
| CN104762801A (zh) * | 2015-04-14 | 2015-07-08 | 佛山市顺德区美的电热电器制造有限公司 | 挂烫机及其控制方法、面料识别装置、建模系统和方法 |
-
2016
- 2016-06-24 DE DE102016211328.3A patent/DE102016211328A1/de not_active Withdrawn
-
2017
- 2017-06-08 RU RU2018144250A patent/RU2703470C1/ru active
- 2017-06-08 PL PL17728564T patent/PL3475477T3/pl unknown
- 2017-06-08 EP EP17728564.0A patent/EP3475477B1/de active Active
- 2017-06-08 WO PCT/EP2017/063992 patent/WO2017220336A1/de not_active Ceased
- 2017-06-08 CN CN201780038295.3A patent/CN109312520B/zh active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130312202A1 (en) * | 2011-08-15 | 2013-11-28 | Whirlpool Corporation | Method for real time determination during loading of volumetric load size in a laundry treating appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109312520B (zh) | 2021-06-22 |
| RU2703470C1 (ru) | 2019-10-17 |
| EP3475477B1 (de) | 2021-09-29 |
| WO2017220336A1 (de) | 2017-12-28 |
| DE102016211328A1 (de) | 2017-12-28 |
| PL3475477T3 (pl) | 2022-01-17 |
| CN109312520A (zh) | 2019-02-05 |
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