EP0512940A1 - Wäschetrockner - Google Patents

Wäschetrockner Download PDF

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Publication number
EP0512940A1
EP0512940A1 EP92610032A EP92610032A EP0512940A1 EP 0512940 A1 EP0512940 A1 EP 0512940A1 EP 92610032 A EP92610032 A EP 92610032A EP 92610032 A EP92610032 A EP 92610032A EP 0512940 A1 EP0512940 A1 EP 0512940A1
Authority
EP
European Patent Office
Prior art keywords
temperature
heater
air
upper limit
drum
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
EP92610032A
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English (en)
French (fr)
Other versions
EP0512940B1 (de
Inventor
Olaf Bronden Poulsen
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.)
NYBORG VASKERIMASKINER AS
Original Assignee
NYBORG VASKERIMASKINER AS
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 NYBORG VASKERIMASKINER AS filed Critical NYBORG VASKERIMASKINER AS
Publication of EP0512940A1 publication Critical patent/EP0512940A1/de
Application granted granted Critical
Publication of EP0512940B1 publication Critical patent/EP0512940B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/22—Lint collecting arrangements
    • 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
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2103/28—Air properties
    • D06F2103/36—Flow or velocity
    • 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
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or pumps
    • 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
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • 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
    • D06F2105/28—Electric heating
    • 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
    • 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
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers

Definitions

  • the invention concerns a laundry drying machine, in particular the monitoring of a lint filter in a tumbler dryer.
  • the background of the invention is a tumbler dryer with a rotatable drum which is permeable to air and which contains wet laundry to be dried, an air inlet and an air passage from the inlet through the drum to a ventilator which is adapted for exhausting air through the air passage.
  • the air is heated in a heater which is placed before the drum in the air passage, which heater supplies essentially constant power.
  • the air temperature is regulated as a result of signals from a temperature sensor which is placed in the air passage at or immediately before the entry of the air into the drum.
  • a regulator is connected to the temperature sensor which will disconnect the heater from the power supply when the temperature rises above a pre-determined upper limit, and re-connect the heater when the temperature goes below a pre-determined lower limit.
  • a lint filter in the air passage for collecting the lint.
  • the laundry drying machine is fitted with a monitoring device for the degree of clogging of the filter, and this monitoring device will trigger an alarm when the degree of clogging exceeds a given pre-determined limit.
  • Laundry drying machines of this kind have been on the market for a number of years.
  • the monitoring device is often made as an electromechanical system which re-acts to the reduction in pressure in the air passage when the lint filter clogs up.
  • These solutions have many problems and uncertainties, however. They are frequently quite clumsy and space-demanding in the installation. Quite large demands on their sensitivity are made because the vacuum is is only slight and its variations are small, and this often provokes erroneous signals or cycling of the monitoring signal which may prove irritating to the user of the laundry drying machine.
  • the monitoring device comprises a counting device which is adapted to trigger the indicating signal in case the upper limit of temperature is exceeded a pre-determined number of times.
  • the inventions rests on the realization that the frequency of interruption of the supply to the heater that has to occur in order to keep the temperature below the upper limit is a practically applicable measure of the degree of clogging by lint.
  • Fig. 1 is a schematic vertical section through a tumbler dryer.
  • Fig. 2 shows the temperature over time for input and exhaust air during a typical drying cycle.
  • Fig. 3. shows the temperature over time for input and exhaust air during a drying cycle with partially clogged lint filter.
  • Fig. 4 is a schematic diagram showing the connection of a temperature sensor to a controller for a laundry drying machine according to the invention.
  • Fig. 5 is a simplified decision tree for a programme routine according to the invention for the monitoring of a lint filter.
  • the tumbler dryer as shown in Fig. 1 is adapted for the drying of wet laundry.
  • the laundry (not shown) is put into a rotatable drum 1 which is closed by a door 2 encasing a window portion 3.
  • the dryer is started by means of a control panel on the front of the machine (not shown).
  • a drying programme for robust textile cotton and the like
  • a programme for more sensitive textile such as synthetics, which will allow only lower temperatures.
  • the drum 1 rotates, and a ventilator 4 in the tumbler dryer is started.
  • the ventilator 4 sucks air through the laundry in the drum.
  • the air is let in through an air inlet 5 at the lower end of a heating unit 6 at the rear of the tumbler dryer.
  • heating occurs by gas, and the air passes a gas burner 7.
  • the heated air passes various guide plates 8, 9 and is let into the drum 1 through its perforated rear wall via an opening 10.
  • an electric heating element may be used or a heat exchanger which is supplied with steam under pressure.
  • a perforated shield which surrounds the door 2 and is led via a ring-shaped manifold 12 to an exhaust channel 13 which houses the ventilator 4.
  • a lint filter 14 is placed in the channel 13.
  • the lint filter consists of a mesh (of metal or plastics) supported by ribs. The curved shape shown is chosen to increase the surface area of the filter.
  • the lint filter is meant to remove lint or fluff from the exhaust air which has been picked up from the laundry during drying.
  • the ventilator expels the air into an exhaust duct 15 at the rear of the tumbler dryer.
  • the input temperature is monitored in the opening 10 by means of a temperature sensor 16,
  • the exhaust temperature is monitored by means of a temperature sensor 17 in the exhaust duct 15. Both sensors are connected to an electronic controller in the tumbler dryer.
  • Fig. 2 illustrates the temperature over time for the input air (curve 23) and exhaust air (curve 24) for a typical drying cycle as well as that of the surrounding air (curve 25) and the residual humidity over time in the laundry (curve 26).
  • the data shown were measured during a drying cycle where the tumbler dryer was already warmed-up, i.e. it had performed a previous drying cycle. Furthermore the lint filter was clean.
  • the heater is dimensioned to work continuously and with constant power.
  • the input temperature reaches ca. 130 deg.C within 2 minutes of the start of the drying cycle, where it remains stable, with a slight increase over time.
  • the warm air perfuses the laundry in the drum and carries water vapour with it so that the residual humidity is continuously dropping.
  • the drying cycle is interrupted when the temperature of the exhaust air has reached a limit which has been determined experimentally; experience shows that the laundry will have reached a suitable residual humidity.
  • the drying cycle is interrupted when the exhaust air temperature rises above 60 deg.C.
  • Fig. 3 in greater magnification shows the temperature over time for input air (curve 27) and exhaust air (curve 28) for a drying cycle with essentially the same conditions as above but where 75% of the lint filter had been screened off, i.e only 25% of the effective filter area of the lint filter was available for the passage of air. This was a simulation of operating conditions where the lint filter is partially clogged after a number of drying cycles.
  • the clogging of the lint filter leads to a reduced air transport through the tumbler dryer.
  • the heater working with constant power, heats the reduced air volume to a higher temperature than would be the case at full air transport.
  • the power supply is cut off when the input air reaches a temperature of 145 deg.C and is re-connected when the input air temperature has fallen to 135 deg.C. This ensures an average temperature of about 130 deg.C which by experience is the optimal temperature for cotton and other robust textiles.
  • a signal is given to the user that the lint filter needs cleaning when it has been determined that the frequency of these adjustments exceeds a previously set upper limit.
  • the control unit counts the number of times the heater is disconnected and reconnected within a suitable time interval, and if this occurs too often, a signal to clean the lint filter is given.
  • the monitoring of the lint filter is based on a measurement of the input air temperature in the laundry drying machine. This measurement is the basis for the control of the heater supply and for the counting of the number of adjustments.
  • the measurement is performed by means of the temperature sensor 16 which is placed in the opening 10 that connects the heater 6 and the drum 1.
  • the temperature sensor is a temperature sensitive resistor, the resistance of which decreases with increased temperature.
  • this NTC-resistor is connected to an input port of a micro-processor which performs the control processes in the tumbler dryer.
  • the micro-processor is of a type which incorporates an analogue-to-digital converter for digitizing the signal from the analogue circuitry, but it is not shown in detail, because such control circuits are well-known and readily available. Also it must be expected that the architecture of such micro-processors will change, although they are pincompatible with presently known components.
  • the analogue circuitry is conventional in that the temperature sensor 16 is part of a voltage divider 16, R1, the potential difference of which is subtracted from a reference voltage from another voltage divider R2,R3 via the inputs of an operational amplifier 20.
  • This embodiment is in essence a bridge circuit.
  • the temperature sensor is decoupled by means of capacitors C, C1 i parallel and chokes L in series with the connecting cable, and limiting diodes D.
  • the output signal from the operational amplifier is fed to the analogue-to-digital port 29 of the micro-processor amplifier via an active limiting circuit using the operational amplifiers 21 and 22 and the limiting diodes D1.
  • the limiting circuit protects the microprocessor from voltage surges.
  • the digitalized output voltage from the circuit in Fig. 4 is a measure of the input air temperature.
  • the temperature sensor 17 for the exhaust air temperature may be connected to the micro-processor via a similar circuit.
  • the micro-processor has several other input ports apart from the temperature sensor circuits. These are provided for signals from the control panel and other sensors in the laundry drying machine. Furthermore there are output ports for control of indicator lamps in the control panel, among which is one for indicating the need for cleaning of the lint filter, and ports for control of the heater, the ventilator, a drive motor (which is not shown) for rotating the drum 1, etc. These particulars need not be described.
  • FIG. 5 shows a flow diagram (a decision tree) for a programme routine which performs the most important parts of the lint filter monitoring according to the invention.
  • the routine is a sub-routine in a larger programme which is performed on a cyclic basis as long as the tumbler dryer is in operation. In the present embodiment the programme is not interruptcontrolled.
  • the routine manipulates the different counters internal to the micro-processor and maintains certain flags as indicators of the condition of the tumbler dryer.
  • step 30 After the routine has been called in step 30 it is determined in steps 31 and 32 if the tumbler dryer has been started, and if the programme selected comprises heating (a drying, not airing process). If no heating has been specified the routine is left immediately. If the tumbler dryer has been started in a drying programme, it is determined in step 33 if an earlier drying cycle has given an indication of clogged filter. If that is the case, the routine is left immediately.
  • a central function in the routine is to determine if the heater is connected (step 34).
  • the continuous temperature measurement and the disconnection and re-connection of the heater are controlled by other sub-routines in the programme; the operating condition of the heater creates a representation of whether the temperature has exceeded the predetermined limits.
  • step 35 which may be reset to the number of heater adjustments, termed the heater counter, which will count down.
  • step 36 it is determined if the heater counter and another counter provided to keep track of elapsed time have been reset. This would not have been the case at the start of the tumbler dryer.
  • step 37 it is therefore indicated that reset has taken place (simultaneously with the reset itself), and in step 38 the elapsed time counter is reset for a time of 4 minutes.
  • step 39 the heater counter is reset in step 41 to a value of 9 adjustment occurrences.
  • the heater counter is reset to 1 adjustment occurrence in step 40. This implies that at the lower temperature a lint filter indication is given in case the temperature has to be adjusted more than 9 times within a 4 minute period. At the higher temperature a lint filter indication is given in case the temperature has to be adjusted more than once in 4 minutes.
  • step 34 the heater counter is blocked from counting. This would not be the case because it was reset at step 35, at the start of the laundry drying machine.
  • the content of the heater counter is decreased by one and is subsequently blocked against further decrease. This block occurs because of the loop character of the control programme and will not be waived before the heater is once more disconnected (steps 34 and 35).
  • each subsequent cycle of the routine will pass steps 34, 46, and 49, without any change in the state of the tumbler dryer.
  • step 36 After first adjustment After the heater has been disconnected for the first time and by each subsequent disconnection of the heater the routine steps from step 36 to step 42. In these steps it is determined if the measurement period has elapsed. If the period has not yet elapsed it is determined in step 43 if the heater counter has been decreased to zero. This corresponds to determining if within the measurement period the pre-seledted number of adjustment occurrences has been reached, in other words if a lint filter alarm is to be given. In case the heater counter has been emptied (counted down to zero) within the measurement period, alarm is given in step 44 and the routine is left at step 49. Each subsequent cycle of the routine will lead from step 33 to step 49 without any change in the state of the tumbler dryer.
  • step 45 If the heater counter has not been emptied during the measurement period, a new measurement must be initiated. This occurs in step 45 by flagging that the counters are no longer reset, and the routine is left in step 49. The next cycle will perform a jump from step 36 to reset in steps 37-41.
  • the elapsed time counter being a real-time counter, is reset by another part of the programme.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP92610032A 1991-05-07 1992-05-06 Wäschetrockner Expired - Lifetime EP0512940B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK083891A DK167066B1 (da) 1991-05-07 1991-05-07 Toerretumbler med fnugfilter
DK838/91 1991-05-07

Publications (2)

Publication Number Publication Date
EP0512940A1 true EP0512940A1 (de) 1992-11-11
EP0512940B1 EP0512940B1 (de) 1995-07-05

Family

ID=8098130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92610032A Expired - Lifetime EP0512940B1 (de) 1991-05-07 1992-05-06 Wäschetrockner

Country Status (4)

Country Link
EP (1) EP0512940B1 (de)
AT (1) ATE124735T1 (de)
DE (1) DE69203290T2 (de)
DK (1) DK167066B1 (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0889155A1 (de) * 1997-07-02 1999-01-07 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Erkennung unzulässiger Betriebszustände in einem Warmluft-Wäschetrockner sowie Wäschetrockner mit einem solchen Erkennungsverfahren
US6779279B2 (en) * 2002-07-09 2004-08-24 Lg Electronics Inc. Dryer having a filter sensing system
EP1736592A2 (de) 2005-06-23 2006-12-27 Whirlpool Corporation Automatischer Wäschetrockner
US7305775B2 (en) 2005-03-14 2007-12-11 Electrolux Home Products Corporation N.V. Household clothes drying machine with improved lint filter
WO2008043705A1 (de) * 2006-10-09 2008-04-17 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrockner mit einer anzeigevorrichtung zur anzeige eines verschmutzungsgrades
CN101139792B (zh) * 2006-09-06 2010-09-08 Lg电子株式会社 具有堵塞检测功能的干燥器
US7926201B2 (en) 2006-09-06 2011-04-19 Lg Electronics Inc. Dryer with clogging detecting function
EP2333149A1 (de) * 2010-11-22 2011-06-15 V-Zug AG Wäschetrockner mit Umgebungstemperatursensor
US7992320B2 (en) 2007-04-18 2011-08-09 Lg Electronics Inc. Clogging detection method for dryer
US8146265B2 (en) 2007-04-18 2012-04-03 Lg Electronics Inc. Display device of dryer
CN101210774B (zh) * 2006-12-26 2013-02-13 Lg电子株式会社 具有安全功能的干燥机
US8387272B2 (en) 2006-09-06 2013-03-05 Lg Electronics Inc. Clogging detecting system for dryer
DE102012223436A1 (de) * 2012-12-17 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Haushalts-Wäschetrocknungsgerät mit Reinigungseinrichtung für Flusenfilter
US20140373386A1 (en) * 2011-06-29 2014-12-25 Electrolux Home Products Corporation N.V. Method for Operating a Tumble Dryer
CN108866926A (zh) * 2017-05-09 2018-11-23 无锡小天鹅股份有限公司 洗干一体机及其烘干控制方法、装置
EP3556930A1 (de) * 2018-04-17 2019-10-23 Miele & Cie. KG Waschtrockner und verfahren zum betreiben eines waschtrockners
US11603624B2 (en) 2020-12-10 2023-03-14 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance based on airflow
US11846064B2 (en) 2021-01-21 2023-12-19 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance using compressor temperature and referigerant mass flow

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895230A (en) * 1956-04-30 1959-07-21 Murray Corp Laundry dryer control
DE3438762A1 (de) * 1984-10-23 1986-04-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Steuerungsanordnung fuer elektrische haushaltsgeraete
EP0312072A1 (de) * 1987-10-14 1989-04-19 INDUSTRIE ZANUSSI S.p.A. Sicherheitsvorrichtung für einen Wäschetrockner
EP0351276A1 (de) * 1988-07-13 1990-01-17 Ciapem Verfahren zur Feststellung eines Fehlerzustandes in einem Wäschetrockner und dieses Verfahren anwendender Wäschetrockner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895230A (en) * 1956-04-30 1959-07-21 Murray Corp Laundry dryer control
DE3438762A1 (de) * 1984-10-23 1986-04-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Steuerungsanordnung fuer elektrische haushaltsgeraete
EP0312072A1 (de) * 1987-10-14 1989-04-19 INDUSTRIE ZANUSSI S.p.A. Sicherheitsvorrichtung für einen Wäschetrockner
EP0351276A1 (de) * 1988-07-13 1990-01-17 Ciapem Verfahren zur Feststellung eines Fehlerzustandes in einem Wäschetrockner und dieses Verfahren anwendender Wäschetrockner

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0889155A1 (de) * 1997-07-02 1999-01-07 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Erkennung unzulässiger Betriebszustände in einem Warmluft-Wäschetrockner sowie Wäschetrockner mit einem solchen Erkennungsverfahren
US6779279B2 (en) * 2002-07-09 2004-08-24 Lg Electronics Inc. Dryer having a filter sensing system
US7305775B2 (en) 2005-03-14 2007-12-11 Electrolux Home Products Corporation N.V. Household clothes drying machine with improved lint filter
EP1736592A2 (de) 2005-06-23 2006-12-27 Whirlpool Corporation Automatischer Wäschetrockner
EP1736592A3 (de) * 2005-06-23 2008-04-16 Whirlpool Corporation Automatischer Wäschetrockner
US8015726B2 (en) 2005-06-23 2011-09-13 Whirlpool Corporation Automatic clothes dryer
CN101139792B (zh) * 2006-09-06 2010-09-08 Lg电子株式会社 具有堵塞检测功能的干燥器
US7926201B2 (en) 2006-09-06 2011-04-19 Lg Electronics Inc. Dryer with clogging detecting function
DE102007042060B4 (de) 2006-09-06 2018-06-21 Lg Electronics Inc. Trockner mit Zusetzerkennungsfunktion
CN101792967B (zh) * 2006-09-06 2013-09-04 Lg电子株式会社 具有堵塞检测功能的干燥器及其控制面板
US8387272B2 (en) 2006-09-06 2013-03-05 Lg Electronics Inc. Clogging detecting system for dryer
WO2008043705A1 (de) * 2006-10-09 2008-04-17 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrockner mit einer anzeigevorrichtung zur anzeige eines verschmutzungsgrades
CN101210774B (zh) * 2006-12-26 2013-02-13 Lg电子株式会社 具有安全功能的干燥机
DE102007062069B4 (de) * 2006-12-26 2014-10-30 Lg Electronics Inc. Trockner mit Sicherheitsfunktion
US8146265B2 (en) 2007-04-18 2012-04-03 Lg Electronics Inc. Display device of dryer
US7992320B2 (en) 2007-04-18 2011-08-09 Lg Electronics Inc. Clogging detection method for dryer
EP2333149A1 (de) * 2010-11-22 2011-06-15 V-Zug AG Wäschetrockner mit Umgebungstemperatursensor
US9695547B2 (en) * 2011-06-29 2017-07-04 Electrolux Home Products Corporation N.V. Method for operating a tumble dryer
RU2590124C2 (ru) * 2011-06-29 2016-07-10 Электролюкс Хоум Продактс Корпорейшн Н.В. Способ управления барабанной сушилкой
US20140373386A1 (en) * 2011-06-29 2014-12-25 Electrolux Home Products Corporation N.V. Method for Operating a Tumble Dryer
DE102012223436A1 (de) * 2012-12-17 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Haushalts-Wäschetrocknungsgerät mit Reinigungseinrichtung für Flusenfilter
CN108866926A (zh) * 2017-05-09 2018-11-23 无锡小天鹅股份有限公司 洗干一体机及其烘干控制方法、装置
CN108866926B (zh) * 2017-05-09 2020-11-10 无锡小天鹅电器有限公司 洗干一体机及其烘干控制方法、装置
EP3556930A1 (de) * 2018-04-17 2019-10-23 Miele & Cie. KG Waschtrockner und verfahren zum betreiben eines waschtrockners
US11603624B2 (en) 2020-12-10 2023-03-14 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance based on airflow
US11846064B2 (en) 2021-01-21 2023-12-19 Haier Us Appliance Solutions, Inc. Lint filter clogging detection in a dryer appliance using compressor temperature and referigerant mass flow

Also Published As

Publication number Publication date
DK83891A (da) 1992-11-08
DK167066B1 (da) 1993-08-23
DE69203290D1 (de) 1995-08-10
DK83891D0 (da) 1991-05-07
ATE124735T1 (de) 1995-07-15
DE69203290T2 (de) 1996-03-14
EP0512940B1 (de) 1995-07-05

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