EP1242665B2 - Gerät zur behandlung von textilien mit einer auswerteschaltung zur erkennung der textilart und/oder der feuchte eines wäschestücks - Google Patents

Gerät zur behandlung von textilien mit einer auswerteschaltung zur erkennung der textilart und/oder der feuchte eines wäschestücks Download PDF

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Publication number
EP1242665B2
EP1242665B2 EP00983225A EP00983225A EP1242665B2 EP 1242665 B2 EP1242665 B2 EP 1242665B2 EP 00983225 A EP00983225 A EP 00983225A EP 00983225 A EP00983225 A EP 00983225A EP 1242665 B2 EP1242665 B2 EP 1242665B2
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EP
European Patent Office
Prior art keywords
textiles
receiving element
radiation
textile
laundry
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.)
Expired - Lifetime
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EP00983225A
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German (de)
English (en)
French (fr)
Other versions
EP1242665B1 (de
EP1242665A1 (de
Inventor
Walter Sams
Tilmann Lorenz
Willibald Reitmeier
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BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
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Classifications

    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/02—Characteristics of laundry or load
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/64—Radiation, e.g. microwaves
    • 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
    • D06F2105/02—Water 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
    • D06F2105/42—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
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • 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
    • 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
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity

Definitions

  • the invention relates to a device for the treatment of textiles according to the preamble of claim 1.
  • a radiation device which comprises at least two, preferably three semiconductor emitters. These transmit an optical radiation of different wavelength, which extends from the ultraviolet range over the visible range to the infrared range, wherein the radiation is modulated with a certain frequency. The radiation is radiated onto a common surface or a single measuring point of a medium. Subsequently, the radiation reflected or transmitted by the medium is detected by a correspondingly adapted receiver and fed to a downstream electronic evaluation device.
  • EP-A-0 612 996 discloses a method and apparatus for identifying unknown textiles.
  • the invention relates to a method for detecting properties of a textile in a device for treating textiles, which contains the features of claim 14.
  • electromagnetic radiation i. H. Radiation in the UV, in the visible or in the IR range used to find out properties of a textile.
  • the textile is processed in some way, for example wetted with a liquid medium, dried, spun, starched, chemically cleaned or otherwise altered.
  • the treatment device is a laundry treatment device, so for example a washing machine, a tumble dryer, a spin dryer, a laundry mangle, a machine for dry cleaning or for dyeing textiles.
  • laundry article when the term "laundry article” is used below, it always means any type of textile medium.
  • a transmitting element according to the invention is any radiator that emits electromagnetic radiation, such as an incandescent lamp, a halogen lamp, a mercury vapor lamp, a light emitting diode, a laser diode , a gas laser and the like.
  • transmitters that emit a narrow-band spectrum, or transmitters that produce monochromatic light.
  • monochromatic or narrow-band transmitters in conjunction with one or more receivers which may be broadband, as long as they include only the bandwidth of the radiation transmitted by the transmitter or the transmitters.
  • broadband radiators and associated wavelength-selective receivers can be used.
  • broadband transmitters and / or receivers can also be used if narrowband filters are assigned to either the transmitters or the receivers.
  • a plurality of transmitting elements are also used, these generating either different spectra or monochromatic light of different wavelengths.
  • the receiving elements are adapted to the transmitting elements, which either detect a certain band within the transmitted radiation emitted by the transmitting element or the transmitting elements, or detect exactly the wavelength that emit the transmitting element or the transmitting elements, if this or these are monochromatic light sources.
  • receiving elements are thus particularly photodiodes or phototransistors.
  • the received light must be selected according to wavelengths. This is done optionally by means of a filter, a prism or a diffraction grating.
  • the light emitted by the transmitting element or the transmitting elements is partially absorbed by the textiles, in particular the items of laundry, but reflected or transmitted to the other part.
  • the reflected light is primarily suitable for detection because the transmitted light makes up only a small fraction of the transmitted radiation and, as the thickness of the textiles increases, the proportion of the transmitted radiation decreases sharply.
  • properties of the textiles are both permanent properties of the textiles, ie their chemical composition of different fibers, for example cotton, wool, silk, synthetic fibers, or their type of fabric, as well as temporary properties which are determined by the treatment by certain Media revealed. Particularly important here is the wetting by water or an organic solvent, by lye or the treatment by laundry or other finishing agent.
  • the evaluation circuit obtains from the received signals a signal which is either directly relevant to the operator or relevant to the further treatment of textiles. For example, a signal may be obtained to warn the operator of mal-programming of the treatment device.
  • a signal may be obtained to warn the operator of mal-programming of the treatment device.
  • the evaluation circuit in a washing machine wins the evaluation of the received electromagnetic radiation, for example in the IR range, information about the type of textile, such as silk, and gives an optical or acoustic signal, if the operator adjusts a temperature at the silk damaged would.
  • the heating of the washing machine is automatically prevented to a temperature above the permissible temperature for silk and carried out by the evaluation circuit, a program that takes into account the properties of the textiles filled in the laundry drum, so that none of the textile damaged, discolored, etc . becomes.
  • the detection of temporary properties of textiles, such as moisture, is taken into account according to a particular embodiment of the invention to provide a desired residual moisture adapted treatment in the washing machine or the tumble dryer.
  • the respective moisture state is detected by the textiles reflected and / or transmitted electromagnetic radiation during spinning or the drying process continuously or at certain time intervals and calculates a residual maturity of the spin or the drying program , When residual moisture is reached, spinning or drying is stopped.
  • the fill level or the loading of a laundry treatment machine can also be detected. This happens, for example, already during filling of the machine when each item of laundry is detected via a sensor, preferably via a plurality of sensors, so that it is possible to determine information about the area occupied by the textiles within the laundry drum.
  • the volumetric determination of the drum level takes into account the reflections caused by the drum back wall.
  • the evaluation circuit or an already existing control circuit then calculates therefrom the amount of water required for cleaning the textiles, the amount of detergent, the type of mechanical treatment, the maximum permissible temperature, taking into account the type or type of textile.
  • the evaluation circuit differs over the duration of the laundry treatment, so for example, the washing, Schleudems, drying, cleaning.
  • information obtained from the textiles can be linked with other information already present in the laundry treating machine, for example about the turbidity of the washing liquor, in order to determine the duration and / or the temperature of the washing process.
  • the evaluation circuit is connected to the program selection control in such a way that a specific program is selected by the laundry treatment appliance on the basis of the laundry items detected as a function of the material or the moisture content of the laundry items. This means that if, for example, one of silk is detected among the laundry items, the maximum temperature of the program is selected by the program selection control that the silk laundry item is not run in or damaged by too high a temperature.
  • An advantage of the device is further that the device for detecting properties of a textile can be used even if the textile is to be subjected to no treatment, but only the material composition of the textile is to be recognized if the label in the textile, the Material composition reproduces, is no longer present, so for example, demolished.
  • the user learns from which materials the textile is made and can then decide which further treatment this should receive.
  • the irradiated with infrared radiation spot is made visible to the user by simultaneous emission of visible radiation.
  • a ring-shaped visible illumination of the textile surrounding the area of the textile irradiated by IR radiation is produced on the textile.
  • the spot irradiated by infrared radiation can be identified by a red dot generated by an LED diode.
  • Transmit and receive elements can be used in different positions inside or outside the treatment device.
  • the receiving element or the receiving elements in Ceiling area of the filling opening arranged.
  • a transmitting element is also arranged there, whereby in particular also a lamp provided for illuminating the interior of the laundry drum is suitable as a transmitting element.
  • transmitting and / or receiving elements can be used in the area above the filling opening of the rear bottom wall of the laundry drum, in particular if a lamp is already provided there for drum interior lighting. If this lamp is a halogen lamp or another broadband emitter, it is already suitable as a transmitting element.
  • the light emitted by the transmitting element is modulated in a certain way and the reflected or emitted light is only used if it has the same modulation.
  • Transmitting and receiving elements are preferably used in conjunction with optical devices, in particular focusing lenses, optical waveguides and optical and / or electrical arrangements for amplifying optical or electrical signals.
  • filters are used to weed out narrow spectral ranges. Suitable filters are, for example, diffraction gratings which are transmissive at different angles for different wavelengths, prisms, holographic filters, gratings and the like. graduated filters from which radiated broadband light is coupled out at different points are also particularly suitable.
  • optical waveguides are also used, which make it possible to arrange transmitting and receiving elements at a location exposed only to slight mechanical stress within the treatment device and to couple the electromagnetic radiation into the area in which the textiles are treated via an optical waveguide and / or from this To pass area via an optical fiber to the receiving element.
  • optical fibers has the further advantage that high temperatures, which are often used in the treatment of textiles, for example, within the laundry drum of a washing machine or the dryer drum of a tumble dryer, the optical elements such.
  • the transmitting and receiving elements and their associated optical means not affect, so that no measures are necessary to compensate for temperature fluctuations at the transmitting and / or receiving elements or to compensate.
  • Another advantage of this is that cost-effective transmitting and / or receiving elements can be used, which make lower demands on the temperature stability and therefore must be less stable against the influences, as they are present within the drum of a tumble dryer or a washing machine and negative transmission and can influence reception elements.
  • the same advantage also applies to the use of a control or evaluation electronics assigned to the respective transmitting and receiving elements.
  • the evaluation circuits including the transmitting and receiving elements, are arranged directly in the treatment area of the textiles.
  • transmitting and receiving elements are protected from occurring in the treatment room of the textiles pollution in the form of lint and dusts by an air flow is passed to the transmitting or receiving elements.
  • a tumble dryer suitable for this purpose is the dryer circulating air or an air flow supplied from the outside, which circulates the dryer circulating air, for example in a countercurrent process.
  • the transmit and receive elements can also be cleaned by items of laundry moved past them during the cleaning process.
  • a washing machine can be a guide of the tub filling water jet provide such that it rinses a shielding the IR radiation source cover.
  • a protective glass is also provided which shields transmitting and / or receiving elements with respect to the treatment space and is preferably removable by the user, so that it can be cleaned.
  • automatic matching also takes place between a transmission signal and a received signal in the absence of textiles to be treated, so that errors due to contaminants within the treatment room, i.e., to be treated, are eliminated. H. especially on a transmitting and receiving elements shielding glass, resulting in the subsequent measurement of textiles as differential signals from the then measured signals can be deducted.
  • the transmit and / or receive elements can be calibrated, for example, each time the device is switched on.
  • Wavelengths in the near and medium infrared range are particularly suitable for textile recognition.
  • organic substances ie textiles
  • this absorbs depending on their chemical composition corresponding spectral components of an electromagnetic radiation with which it was irradiated, or reflects these and / or transmits them.
  • the energy input into the textiles preferably takes place by means of a broadband radiator, for example an incandescent lamp, a halogen lamp or a light-emitting diode, but others are also suitable, narrow band radiators.
  • the textiles and the water contained therein absorb energy from the electromagnetic radiation over the entire irradiated spectral range of the light source.
  • the unabsorbed light is reflected and / or transmitted, with a portion of this light being directed by means of the or the receiving elements to the evaluation circuit.
  • the received radiation is a spectrum, preferably a spectral decomposition of the received spectrum is performed.
  • Particularly suitable is the Fourier transform of the spectra (FTIR).
  • FTIR Fourier transform of the spectra
  • This decomposition can be carried out according to the following principles:
  • the electromagnetic signals are radiated onto the receiving elements, which are formed, for example, by individual receiving diodes or individual phototransistors or by receiving elements arranged in the form of a CCD array.
  • the receiving elements upstream filter can also provide diffraction grating.
  • a coupling optics which, in addition to a grid or a filter, also comprises a lens system, for example a condenser lens.
  • those wavelength ranges in which either no such dependence exists or at least have no noticeable influence are preferably selected for the measurement of the moisture on the one hand and the type of textile on the other hand the mutual distinctness of different types of textiles.
  • information which takes into account the dependence of the spectrum of a textile on the recorded moisture is also stored in a memory unit associated with the evaluation circuit in order to correct spectral measurements according to the desired data, be it the type of textile or the moisture content.
  • spectra In the evaluation of the spectra are various properties of the spectra, such as their slope, the height of peaks, the height ratio of different peaks, derivative functions from the spectra, derived from the spectra size, preferably also a factor analysis of the spectra is performed. All data obtained can be stored in the memory unit and are then available for comparison with later measurement results.
  • the evaluation unit comprises a fuzzy logic or a neural network in which various properties for the detection of permanent properties of textiles, such as their chemical composition, or temporary properties of textiles, such as their moisture content or temperature or wetting by a liquid medium, are recognizable.
  • various properties for the detection of permanent properties of textiles such as their chemical composition, or temporary properties of textiles, such as their moisture content or temperature or wetting by a liquid medium, are recognizable.
  • there are spectra for different types of textiles especially for different moisture levels of these textiles in the storage unit or are successively stored during operation of the treatment device and taken into account in the processing or processing of textiles respectively.
  • the drum level of a washing machine or a tumble dryer can be determined by determining the intensity of the reflected light. This exploits the fact that textiles scatter the light far more than the laundry drum, which consists of stainless steel. In principle, the difference between the materials of laundry drum and items of laundry is exploitable to detect the volume filled by laundry within the laundry treating appliance. In this case, an integral measurement of the spectra is preferably carried out.
  • the device is also suitable for detecting a drum standstill, since in this case the measured spectra do not change with time.
  • a drum standstill can be caused by a crack of the drive belt.
  • the spectrometer can also be used in conjunction with the evaluation circuit as a smoke detector, because when reaching a certain smoke density, the spectra of the laundry items are no longer recognized.
  • the evaluation circuit then generates a signal which, when the domestic appliance is connected to a data network, triggers a fire alarm at a receiver, for example in a fire station.
  • a fire alarm is connected to the laundry treatment appliance or provided in the household.
  • a tumble dryer 1 ( Fig. 1 ) is equipped with a rotatably mounted drum 2 for receiving laundry to be dried 3.
  • the drum 2 has a drum base 4, which is perforated in its central region 5. The perforation is used to filter a dry air stream.
  • On the drum base 4 opposite side is a closable by a loading door 6 opening exists.
  • a blower 7 generates the drying air flow, which flows through a recirculating air circuit 8 to a heating device 9 for heating the drying air and then through the central region 5 of the drum base 4 into the drum 2.
  • the drying air flows through the loading door 6, which has openings on the inside and the bottom, through a further section of the circulating air circuit 8 to a condenser, in which the drying air is cooled to condense moisture contained in it.
  • the condenser 10 is flowed through by cooling air, which is drawn in by the environment of the tumble dryer 1.
  • the condenser 10 the dry air is sucked in again by the blower.
  • a lamp 11 is provided, for example a broadband radiator, in particular a light bulb, a halogen lamp or a light-emitting diode. This emits electromagnetic radiation to the laundry 3 to be dried within the drum 2.
  • the receiving elements 12, 13 are sensitive in different spectral ranges, such as in the case of a silicon diode in a bandwidth of less than 1100 nm or in the case of InGaAs diodes in a bandwidth of 800 nm to 1700 nm.
  • a filter By placing a filter on the Radial input side of the receiving elements 12, 13 can be achieved that only a certain narrow band or only a certain wavelength by the respective transmitting element 12, 13 can be received.
  • the wavelength ranges in which the receiving elements 12, 13 are sensitive can be selected such that, for example, the receiving element 12 in a wavelength range of 800 to 1700 nm is sensitive and detects various types of textiles, such as cotton, linen, silk, viscose, Wool or polyamide or other textile materials.
  • Fig. 2 to 5 show transmission spectra of polycarbonate, polyamide 6, polyurethane and polyamide 66 in the wavenumber range of 4000 to 500 cm -1 .
  • Spectra as a function of wavenumbers each show characteristic peaks, slopes, minima that are material specific and allow tissues containing such materials to distinguish from other tissues.
  • Fig. 6 shows the reflectance spectrum of four pieces of polyester derived from different fabrics. By different scattering of the light arise to each other substantially parallel shifted reflectance spectra. For derivative functions derived from these spectra ( Fig. 7 ) then shows again the agreement in the material.
  • Fig. 8 shows reflection spectra of a wet and a dry polyester fabric, which are also in their derivative functions ( Fig. 9 ) Show differences.
  • Fig. 10 shows remission or reflection spectra of polyamide 6 and polyamide 6.6, which are only in a wavelength range between 2400 and 2500 nm separated from each other.
  • FIGS. 11 and 12 show reflection spectra of viscose or polyacrylonitrile in the reflection minimum of the water band as a function of the moisture content of the fibers, as can be determined by means of the evaluation circuit 15.
  • Fig. 13 shows an absorption spectrum of polyethylene in the wavenumber range of 3500 to 500 cm -1 .
  • Fig. 14 shows a reflection spectrum of cotton in the dry and wet state, the cotton in the clothes dryer 1 still has a certain residual moisture.
  • the spectrum for dry cotton stored in one of the evaluation circuit 15 memory can be seen from the respective measured spectrum by comparison with the spectrum for dry cotton, whether the drying process must be continued or if the desired residual moisture, for example, the ironing moisture or Cupboard moisture, already reached.
  • Fig. 15 represents a transmission spectrum for water that has two characteristic minima at 1450 nm and 1930 nm. This measurement can be carried out with a receiving element which is arranged below the introduced into the drum 2 laundry or on the lower side of the filling opening, so that this, when the transmitting element 11 emits electromagnetic radiation, which receives from the laundry 3 transmitted radiation.
  • measurements of the reflection spectrum of water can also be carried out with one of the receiving elements 12, 13 in this wavelength range.
  • the receiving elements 12, 13 are connected via lines 14 to the evaluation circuit 15.
  • the evaluation circuit 15 contains an evaluation electronics, on the basis of which the spectrums of the textile or particularly relevant parts in the spectra can be recognized.
  • the evaluation circuit 15 is also assigned a memory in which known spectra are stored, so that the evaluation unit 15 can safely detect a type of textiles by comparing the received spectra with the stored spectra.
  • the evaluation unit is equipped with a readable system or a fuzzy lodge or comprises a neural network. If the evaluation circuit 15 is a self-learning system, it can be trained to recognize spectra later.
  • the evaluation circuit 15 is connected to a control circuit 16 for controlling the tumble dryer 1 in connection. In particular, it also has access to the memory of the control circuit 16 to compare and evaluate spectra.
  • the evaluation circuit 15 detects a spectrum in a specific program state, it can influence the further program sequence. Upon detection of a residual moisture reached via one of the receiving elements 12, 13 and after detection by the evaluation circuit 15, this sends a corresponding signal to the control circuit 16 so that it continues the drying process until the desired residual moisture is reached, which has set the operator. It is also possible that the evaluation unit 15 triggers an alarm signal upon reaching a certain operating state or terminates the respectively running program. In this way it can be prevented that textiles are too heavily stressed or damaged. This is particularly important if the operator has introduced textiles of different composition in the drum 2, without noticing it, so that in this case the program can break, so that not even the most sensitive of the introduced textile is damaged.
  • the receiving elements 12, 13 are either individual diodes or composed of arrays of many diodes or phototransistors or similar receivers.
  • the receiving elements 12, 13 is preceded by a coupling optics, which includes, for example, a focusing lens, a diffraction grating and / or an optical waveguide.
  • a coupling optics which includes, for example, a focusing lens, a diffraction grating and / or an optical waveguide.
  • electromagnetic radiation can also be detected at those locations which are less suitable for the attachment of the receiving elements 12, 13.
  • the spectra of the textiles are either punctual or the measuring signals are integrated over the room.
  • a method for detecting properties of a textile which can be used in various treatment apparatuses, for example in washing machines, tumble dryers, spin dryers or in machines for dry cleaning with a non-aqueous solvent.
  • the type of textile can be checked, it can also be checked whether the user-selected program selection matches the introduced textile type and is compatible.
  • the device In the event of imminent damage to the textile, the device generates a warning - visually or acoustically - or the treatment device independently carries out a program correction. It is also possible that the treatment device independently selects and executes the program adapted to the present textile. This can safely avoid overheating and consequent damage to a textile, for example in a tumble dryer or in a washing machine.
  • the moisture determination is in the washing machine in the remaining duration of the spin operation, the tumble dryer 1 in the remaining duration of the drying process.
  • a non-contact measurement with electromagnetic radiation is performed, which allows conclusions about various properties of the textiles, such as their moisture, chemical composition, etc.
  • the entire dryer contents of the laundry to be dried 3 either in the filled state or when filling a piece of laundry 3a detect while the loading door 6 is open.
  • the evaluation circuit 15 By detecting the properties of the laundry items 3, 3a by the evaluation circuit 15 can be, especially in conjunction with the control circuit 16, the drying process in the dryer 1 with regard to the drying power used and the drying time or in a washing machine to optimize the washing process. Energy, water consumption, the type and amount of detergent and the type of mechanical treatment as well as the duration of treatment determines an evaluation circuit or control circuit in the washing machine automatically or in conjunction with specifications of an operator, taking into account the measured spectra.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Treatment Of Fiber Materials (AREA)
EP00983225A 1999-12-20 2000-12-05 Gerät zur behandlung von textilien mit einer auswerteschaltung zur erkennung der textilart und/oder der feuchte eines wäschestücks Expired - Lifetime EP1242665B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19961459A DE19961459A1 (de) 1999-12-20 1999-12-20 Gerät zur Behandlung von Textilien mit einer Auswerteschaltung zur Erkennung der Textilart und/oder der Feuchte eines Wäschestücks
DE19961459 1999-12-20
PCT/EP2000/012228 WO2001046509A1 (de) 1999-12-20 2000-12-05 Gerät zur behandlung von textilien mit einer auswerteschaltung zur erkennung der textilart und/oder der feuchte eines wäschestücks

Publications (3)

Publication Number Publication Date
EP1242665A1 EP1242665A1 (de) 2002-09-25
EP1242665B1 EP1242665B1 (de) 2004-03-17
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US6784997B2 (en) 2004-08-31
ATE262066T1 (de) 2004-04-15
EP1242665B1 (de) 2004-03-17
WO2001046509A1 (de) 2001-06-28
ES2217002T3 (es) 2004-11-01
DE19961459A1 (de) 2001-07-12
US20030019253A1 (en) 2003-01-30
EP1242665A1 (de) 2002-09-25
DE50005739D1 (de) 2004-04-22
ES2217002T5 (es) 2008-12-01
TR200401092T4 (tr) 2004-07-21

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