EP2255033A1 - Appareil de traitement du linge avec un tambour et un détecteur ainsi que procédé pour son exploitation - Google Patents

Appareil de traitement du linge avec un tambour et un détecteur ainsi que procédé pour son exploitation

Info

Publication number
EP2255033A1
EP2255033A1 EP09719968A EP09719968A EP2255033A1 EP 2255033 A1 EP2255033 A1 EP 2255033A1 EP 09719968 A EP09719968 A EP 09719968A EP 09719968 A EP09719968 A EP 09719968A EP 2255033 A1 EP2255033 A1 EP 2255033A1
Authority
EP
European Patent Office
Prior art keywords
laundry treatment
acoustic
drum
acoustic sensor
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09719968A
Other languages
German (de)
English (en)
Other versions
EP2255033B1 (fr
Inventor
Stephan Malcher
Harald Pietsch
Martina Wöbkemeier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2255033A1 publication Critical patent/EP2255033A1/fr
Application granted granted Critical
Publication of EP2255033B1 publication Critical patent/EP2255033B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • D06F33/76—Preventing or reducing imbalance or noise
    • 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
    • D06F58/52—Preventing or reducing noise
    • 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 
    • D06F33/48—Preventing or reducing imbalance or noise
    • 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
    • A47L15/0052—Noise reduction
    • 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
    • A47L2401/32—Vibration or sound detection
    • 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
    • D06F2103/26—Imbalance; Noise level
    • 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
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters

Definitions

  • Laundry treatment device with a drum and a sensor and method for its operation
  • the invention relates to a laundry treatment device with a drum and a sensor, in particular for speed control, and a method for its operation.
  • the invention relates to a laundry treatment device with a sensor that can be configured as a washing machine, washer-dryer or dryer, and a method for its operation.
  • a relatively loud noise can be heard by the movement, in particular by the fall, of wet laundry ("wash clothes") in the rotating drum
  • a speed for the drum of about 55 revolutions per minute (rpm, rpm) is set.
  • rpm, rpm revolutions per minute
  • a similar problem arises in the presence of garments with zippers in the drum. It would therefore be desirable first to dry with a higher speed, which is almost equal to the application speed, and to reduce the speed to the otherwise optimal lower range only at a lower moisture content of the laundry. This could result in a significant reduction of the noise level.
  • US 2003/0037382 A1 relates to a washing machine with a built-noise reduction system, which includes a microphone for audibly detecting at least an imbalance or a pump idle and a control device for changing the washing operation based on the signals received from the microphone.
  • the microphone may, in principle, be mounted throughout the washing machine, the microphone generally being an acoustic signal converter that generates an electrical signal in response to a measured sound energy.
  • an electric condenser microphone is mentioned.
  • the signals received from the microphone can be analyzed by a CPU for imbalance or pump idle, whereupon, for example, the rotational speed of the drum of the washing machine can be adjusted.
  • JP 2007-167175 A describes a washing machine which, in addition to a rotatable drum for receiving laundry, has a microphone for recording acoustic vibration signals generated by the drum and a comparison part for determining the result determined by the microphone with reference data for to compare different predetermined washing conditions.
  • a drum rotation control part is used to control the washing state of the laundry. Periodic variations in the noise level due to the rotation of the drum are registered and compared with the reference data, whereupon the washing process is controlled accordingly.
  • JP 2007-143630 A describes a washing machine equipped with a vibration sensor which measures vibrations of a specific body, with a transmission noise sensor which measures the noises caused by the vibrations, and a control means for evaluating the information of the vibration sensor and the sound sensor to control the rotation of a drive motor.
  • the recording and evaluation of acoustic signals in the known washing machines has disadvantages, for example with regard to the accuracy of the recording and the simplicity of the evaluation.
  • the object of the present invention was therefore to provide a laundry treatment device and a method for its operation, which allow optimal control of the rotational speed of a drum.
  • the invention thus relates to a laundry treatment device having a drum, a motor for driving the drum, a control device and a sensor, wherein the sensor is an acoustic sensor for the measurement of an acoustic signal and the laundry treatment device means for comparing the acoustic signal recorded by the acoustic sensor with a in the control device deposited acoustic reference signal, and wherein the acoustic signal and the acoustic reference signal is each a sonagram.
  • a sonagram is understood here to mean a two-dimensional representation in which a rapidly variable acoustic process is represented as a relatively slow temporal change of a spectrum of relatively high frequencies.
  • the sonagram is thus a kind of partial Fourier transformation of an acoustic signal, wherein with respect to low-frequency components in the signal, the time representation is maintained, with respect to high-frequency components but a transformation takes place in the frequency representation.
  • acoustic sensors are well known, for example as microphones.
  • the acoustic sensor can perform a frequency-selective measurement of a sound level.
  • Acoustic sensors can work in a wide frequency range. According to the invention, it is preferable if the acoustic sensor can measure changes in sound level in a frequency range of 30 Hz to 30 kHz.
  • an acoustic sensor By using an acoustic sensor according to the invention, it is possible to monitor and control the programs running in a laundry treatment program.
  • the acoustic signal measured by the acoustic sensor can also be used to monitor the proper functioning of a
  • Laundry treatment device can be used. For example, defects or signs of aging on the laundry treatment appliance can be determined, so that appropriate remedial measures can be initiated.
  • a material break can be indicated by means of characteristic noises such as cracking or tearing.
  • further noises such as hissing, whistling, hissing, grinding, humming, roaring, banging, knocking, etc. can be detected and suitably evaluated.
  • An acoustic sensor could thus also detect leakage noises (leakage of water in the case of a washing machine) or imbalances.
  • the acoustic signal is recorded in the form of a sonagram (sometimes called "sonogram").
  • the frequency range, sensitivity, signal smoothing, switching threshold and / or output characteristic can be adjusted.
  • the laundry treatment appliance according to the invention is preferably a washing machine, a washer-dryer or a tumble dryer. Particularly preferably, the laundry treatment appliance is a washing machine or a washer-dryer.
  • the acoustic sensor can be arranged in the laundry treatment device at various locations. It may also be possible to use several acoustic sensors. A suitable location for the acoustic sensor placement will generally depend on the intended use of the acoustic signals to be measured by the acoustic sensor. The emphasis is on monitoring the Operations in a drum, such as the drum in a dryer, it will be useful to arrange the acoustic sensor in or close to the drum. If, in particular, the mode of operation of a pump is to be monitored, the arrangement on the pump is advantageous.
  • the acoustic sensor In general, it will be useful to arrange the acoustic sensor so that the acoustic signals from several components of a laundry treatment device can be measured and evaluated.
  • the acoustic sensor is arranged in or on a tub of a washing machine or a washer-dryer.
  • the acoustic sensor on a pump of the
  • Washer or the washer dryer is arranged. As a result, a control of the pump is possible.
  • the noise or sound level during pumping of water is lower than during pumping at idle when there is no water.
  • the pump is stopped or in the case of a controllable pump, the speed of the pump is changed.
  • the acoustic sensor is arranged on a cuff.
  • the laundry treatment appliance according to the invention is a dryer or a washer-dryer.
  • the acoustic sensor is preferably attached to the drum.
  • an acoustic sensor can be arranged on a possibly existing condensate container.
  • the condensate tank is located on a dryer, which is equipped with a heat exchanger, usually below the heat exchanger.
  • one or more acoustic sensors are arranged in the region of the motor and / or on the control device.
  • the laundry treatment appliance according to the invention generally also has a heater.
  • a heater for heating process air is used prior to introduction into the drum acting as a drying chamber.
  • the heating in a supply air duct of a dryer can be, for example, an electric heater (electrical resistance heating), a gas heater and / or one or more heat exchangers.
  • the heater preferably includes a gas or electric heater.
  • At least one heat exchanger air-air heat exchanger, heat source or heat sink, in particular condenser or evaporator of a heat pump
  • heat exchangers generally cross the supply air duct and the warm air from the drying chamber having exhaust air duct.
  • the laundry treatment appliance according to the invention has means for comparing the acoustic signal recorded by the acoustic sensor with an acoustic reference signal deposited in the control device of the laundry treatment appliance, wherein the acoustic signal and the acoustic reference signal are each a sonagram.
  • a sonagram in the sense of the invention is a sound spectrogram which describes a relationship between individual frequencies and the intensity of the sound as well as its time course.
  • the acoustic reference signal preferably comprises permissible combinations of values for these frequencies and sound intensities as well as their temporal course.
  • the laundry treatment appliance preferably has a display means for reproducing the measured acoustic signal of the acoustic sensor. This is generally a visual display.
  • the display means may indicate the operating condition and / or malfunction of the laundry treating appliance.
  • the display device can only serve to visualize the noise generated by the laundry treatment appliance.
  • the display means may be one or more parts.
  • the display can be displayed, for example, by entering numerical values, different colors or a bar graph.
  • different colors e.g., green and red
  • the invention also relates to a method for operating a laundry treatment device with a drum, a motor for driving the drum, a control device and an acoustic sensor, wherein the acoustic sensor measures an acoustic signal, in particular a sound level, during operation of the laundry treatment device at one or more frequencies, wherein a sonogram is measured as the acoustic signal.
  • the measured acoustic signal is preferably compared with a reference signal stored in the control device.
  • the acoustic signal measured by the acoustic sensor is preferably compared with a reference signal stored in the control device.
  • a speed of the drum lowered until the predetermined value .DELTA.S V 1 is reached or fallen below.
  • a speed of the drum is reduced in a pumping step when exceeding a predetermined value ⁇ Sv 2 for a difference ⁇ S between the measured acoustic signal and the stored for a pumping step in the control device reference signal, until it reaches predetermined value ⁇ S V 2 or below, or the pump is off.
  • the acoustic signal measured by the acoustic sensor is compared with a reference signal stored in the control device, so that when a predetermined value ⁇ S v 3 is exceeded for a difference .DELTA.S between the measured acoustic signal and stored in the control device reference signal, a speed of the drum is increased until the predetermined value .DELTA.Sv 3 is reached or fallen below.
  • noise due to the movement or falling wet laundry or zippers having laundry items can be reduced.
  • the laundry treatment appliance according to the invention and the method according to the invention for its operation have the advantage that the noise associated with the operation of a laundry treatment appliance with a drum can be used to control the operation as well as to monitor the laundry treatment appliance and its components.
  • FIG. 1 shows a vertical section through a first embodiment of a laundry treatment device designed as a vented dryer.
  • Fig. 2 shows schematically a vertical section through a configured as a washing machine second embodiment of a laundry treatment device.
  • the exhaust air dryer 1 shown in Fig. 1 has a drum 2 rotatable about a horizontal axis as a drying chamber 2, are mounted within which drivers 21 for moving laundry during a drum rotation.
  • Process air is guided by means of a blower 12 via a heater 11, through the drum 2 in a process air duct 10.
  • the process air duct 10 is supplied via a supply air duct 14 room air or sucked by the blower 12.
  • the now moist, warm process air enters an exhaust duct 35.
  • the exhaust duct 35 is an air-air heat exchanger 16, in which the process air (here: exhaust air) cooled and after condensation of the moisture contained in it Exhaust air outlet 15 is guided.
  • room air supplied to the dryer 1 is used in the air-air heat exchanger 16 via the supply air duct 14. This supply air is heated by the warm, laden with moisture process air and then before entering the drum 2 by means of the heater 1 1.
  • the drum 2 is mounted in the embodiment shown in Fig. 1 at the rear bottom by means of a pivot bearing and front by means of a bearing plate 17, wherein the Drum 2 rests with a brim on a sliding strip 18 on the bearing plate 17 and is held at the front end.
  • a motor 3 drives the drum 2.
  • 36 means a display means for reproducing the acoustic signal measured by the acoustic sensor.
  • acoustic sensors 5 are located inside the drum 2 and at the condensate collecting container 9.
  • Fig. 2 shows schematically a vertical section through a configured as a washing machine second embodiment of a laundry treatment device.
  • FIG. 2 is a schematic representation of the relevant parts of a washing machine 6 in which a method described herein can be carried out.
  • the washing machine 6 of the embodiment shown in Figure 2 has a tub 7, in which a drum 2 rotatably mounted and can be operated by a motor 3.
  • the axis of rotation 31 of the drum 2 from the horizontal by a small angle (eg 13 °) directed forwardly upwards so that you have easier access and insight into the interior of the drum 2 .
  • a small angle eg 13 °
  • the washing machine also has a liquor inlet system comprising a water connection fitting for the domestic water network 28, an electrically controllable valve 29 and a supply line 27 to the tub 7, which is guided via a dispensing tray 30 from which the feed water can carry detergent portions into the tub 7.
  • a heater 34 in the tub 7, a heater 34.
  • the valve 29 as well as the heater 34 by a control device (“program control") 4 as a function of a program schedule to be controlled to a time program and / or may be bound to the achievement of certain measurements of parameters such as liquor level, liquor temperature, rotational speed of the drum 2, etc. within the washing machine.
  • 33 means a sensor for measuring the hydrostatic pressure p in the tub 7.
  • 8 means a pump for the liquid in the tub 7.
  • acoustic sensors 5 are arranged on the pump 8 and on the control device 4.
  • 36 means a display means for reproducing the measured acoustic signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP09719968A 2008-03-11 2009-03-09 Appareil de traitement du linge avec un tambour et un détecteur ainsi que procédé pour son exploitation Active EP2255033B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008013557A DE102008013557A1 (de) 2008-03-11 2008-03-11 Wäschebehandlungsgerät mit einer Trommel und einem Sensor sowie Verfahren zu seinem Betrieb
PCT/EP2009/052742 WO2009112466A1 (fr) 2008-03-11 2009-03-09 Appareil de traitement du linge avec un tambour et un détecteur ainsi que procédé pour son exploitation

Publications (2)

Publication Number Publication Date
EP2255033A1 true EP2255033A1 (fr) 2010-12-01
EP2255033B1 EP2255033B1 (fr) 2011-06-29

Family

ID=40673094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09719968A Active EP2255033B1 (fr) 2008-03-11 2009-03-09 Appareil de traitement du linge avec un tambour et un détecteur ainsi que procédé pour son exploitation

Country Status (6)

Country Link
US (1) US20110000100A1 (fr)
EP (1) EP2255033B1 (fr)
CN (1) CN101970744B (fr)
AT (1) ATE514811T1 (fr)
DE (1) DE102008013557A1 (fr)
WO (1) WO2009112466A1 (fr)

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DE102014217943A1 (de) * 2014-09-08 2016-03-10 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit einem Drucksensor sowie hierzu geeignete Waschmaschine
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CN112735052A (zh) * 2021-01-30 2021-04-30 广东小器点科技有限公司 衣物烘干智能结算费用的方法、衣物护理机及其系统
DE102021207182A1 (de) 2021-07-08 2023-01-12 BSH Hausgeräte GmbH Steuerung eines Haushaltsgeräts

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Also Published As

Publication number Publication date
CN101970744A (zh) 2011-02-09
CN101970744B (zh) 2012-07-25
DE102008013557A1 (de) 2009-09-17
ATE514811T1 (de) 2011-07-15
EP2255033B1 (fr) 2011-06-29
WO2009112466A1 (fr) 2009-09-17
US20110000100A1 (en) 2011-01-06

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