EP0106289A2 - Wäschetrockner mit Flusensiebüberwachungsvorrichtung - Google Patents

Wäschetrockner mit Flusensiebüberwachungsvorrichtung Download PDF

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Publication number
EP0106289A2
EP0106289A2 EP83110046A EP83110046A EP0106289A2 EP 0106289 A2 EP0106289 A2 EP 0106289A2 EP 83110046 A EP83110046 A EP 83110046A EP 83110046 A EP83110046 A EP 83110046A EP 0106289 A2 EP0106289 A2 EP 0106289A2
Authority
EP
European Patent Office
Prior art keywords
filter
monitoring device
laundry
drum
laundry dryer
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
EP83110046A
Other languages
English (en)
French (fr)
Other versions
EP0106289A3 (en
EP0106289B1 (de
Inventor
Giuseppe Frucco
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Priority to AT83110046T priority Critical patent/ATE34415T1/de
Publication of EP0106289A2 publication Critical patent/EP0106289A2/de
Publication of EP0106289A3 publication Critical patent/EP0106289A3/en
Application granted granted Critical
Publication of EP0106289B1 publication Critical patent/EP0106289B1/de
Expired 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

Definitions

  • the present invention relates to a laundry dryer having a filter inserted in a duct for the circulation of heated drying air, and a monitoring device for detecting the operative condition of said filter.
  • Conventional laundry dryers comprise a blower and heater elements for circulating heated air through the interior of a drum containing the laundry to be dried by way of an air duct.
  • a filter adapted to retain lint and possibly present foreign bodies.
  • Such filter is provided with monitoring means connected to the heater elements and to electric motors driving said blower and said drum by means of an electric circuit adapted to switch between two operative conditions. In the first such condition, with the filter functioning properly, this circuit supplies all the electric components of the machine in a regular manner. In the second such condition, with the filter clogged, the speed of the circulating heated air is reduced, and the temperature interiorly of the drum is increased, with the risk of the laundry being singed or burnt.
  • a first type of such monitoring device is formed by a temperature sensor adapted to detect an excessive rise of the air temperature within the machine or an overheating condition of the heater elements.
  • a monitoring device of a second type comprises a pneumatic sensor adapted to detect the pressure difference of the heated air between the upstream and the downstream side of the filter.
  • a further monitoring device comprises a mechanical sensor responsive to variations of the air flow rate downstream of the filter.
  • the described monitoring devices thus carry out indirect measurements of the operative condition of the filter in a laundry dryer, so that, in case of failure of other functional components of the dryer, they are apt to erroneously indicate malfunction of the filter, and are thus not fully reliable for the stated purpose-.
  • monitoring devices directly cooperating with the filter such devices comprising for instance an optical sensor for detecting the translucency, and thus the degree of clogging, of the filter.
  • the obtained measurements of indicative of the operative condition of the filter may be erroneous due to the accumulation of dust on the optical sensor or to drifting of the sensor's adjustment, so that these devices are likewise unsuitable for obtaining satisfactory and reliable results.
  • a laundry dryer comprising a blower and at least one heater element for circulating heated air through the interior of a drum containing the laundry to be dried by way of an air duct including a filter associated with a monitoring device connected to said heater element and to electric motors of said blower and said drum through an electric circuit adapted to-switch between two operative conditions.
  • a laundry dryer of the type indicated above is characterized in that said monitoring device comprises at least two sensor electrodes disposed in spaced relationship and electrically insulated from one another adjacent said filter for measuring the electric conductivity of lint progressively accumulating on the active filter surface.
  • a laundry dryer comprises a housing 4 enclosing a perforated drum 5 for containing the laundry to be dried, mounted for rotation about its horizontal axis under the action of an electric motor (not shown).
  • drum 5 is provided with a rear portion 6 formed with perforations 7.
  • the dryer further comprises a front opening 8 closed by a door 9 giving access to drum 5 and being provided with a perforated interior wall 10.
  • the rear side of the dryer is formed with openings 11 for the aspiration of air which is conveyed to the interior of drum 5 by way of an inlet duct 12 connected to rear portion 6 of drum 5 and enclosing at least one electric heater element 13. From drum 5 the heated air is exhausted through perforated wall 10 and conveyed to an outlet opening 14 by way of a further air duct 15 having a motor-driven blower installed therein.
  • duct 15 is provided with at least one filter 17 inserted thereinto through inlet opening 18 and serving to retain any lint set free by the laundry and any foreign matter possibly carriec along in the air stream, and with a device for monitoring the operative condition of filter 17.
  • -filter 17 in a first embodiment of the invention comprises two complementary frames 19 and 20 formed of a suitable insulating material and enclosing each a metallic filterinr surface 21, 22 of a fine mesh structure.
  • Frames 19 and 20 are hingedly connected to one another along adjacent edges 23, 24, so that the filter can be opened in the manner of a book for cleaning and lint removal.
  • the opposite free edge portions 27, 28 of frames 19, 20 are formed with mutually engageable means 25, 26 for retaining the two frames in a partially closed position, in which they form an acute angle between themselves, so as to maintain a certain distance between filtering surfaces 21, 22.
  • the above named monitoring device is formed by the two filtering surfaces 21, 22 of the filter 17 itself, which to this effect additionally perform the function of sensor electrodes for detecting the degree of clogging of the filter in a manner to be described.
  • the thus formed sensor electrodes are electrically insulated from one another by the respective frames 19, 20, and connected to the electric circuit of the dryer including heater element 13 and the electric motors driving drum 5 and blower 16.
  • the monitoring device of this embodiment basically functions through measurement of the varying electric conductivity of the lint accumulating between the filtering surfaces of the filter during the operation of the dryer, during which the filter is traversed by a stream of moist air.
  • the accumulating lint As the accumulating lint is moist, its fibers act as electric conductors, permitting a weak current to flow across the sensor electrodes. This current may then be measured by means of a conventional electronic device connected to the sensor electrodes and to optical or acoustical signal means of any known type.
  • the described monitoring device is adjusted so as to remain inactive as 1-ong as the lint progressively accumulating on the filter allows a sufficient flow of heated air to pass therethrough for ensuring satisfactory drying of the laundry at temperatures lying between predetermined limits.
  • the monitoring device is activated in the described manner.
  • the signal means is automatically activated to indicate to the user that the filter is completely clogged, while the heater element 13 and the motors are deenergized so as to interrupt the operating cycle of the dryer and to avoid any damage to the laundry.
  • Filter 17 may then be extracted from the dryer, thoroughly cleaned of the lint adhering thereto, and returned to its position for completing the interrupted drying cycle.
  • the filter comprises a single frame 29 formed of a suitable insulating material and enclosing a fine-mesh filtering surface 30.
  • the sensor electrodes are formed as metallic rods 31, 32 transversely affixed to filtering surface 30 in spaced positions and, if the filter surface 30 is formed of metal or another electrically conductive material, with the interposition of insulating supports 33 and 34, respectively.
  • the sensor- electrodes are connected to the electric circuit of the machine so as to indicate the operative condition of the filter in a similar manner.
  • the sensor electrodes it is of course possible to design the sensor electrodes in any other suitable manner as long as it is ensured that they can be effectively short-circuited by an accumulation of moist lint so as to be able to measure the electric conductivity thereof.
  • the described monitoring device is of simple construction, of convenient use and adapted to directly, accurately and reliably detect the operative condition of the filter without the necessity of periodic adjustment and of employing structurally complicated monitoring devices of the types described in the introduction.
EP83110046A 1982-10-08 1983-10-07 Wäschetrockner mit Flusensiebüberwachungsvorrichtung Expired EP0106289B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110046T ATE34415T1 (de) 1982-10-08 1983-10-07 Waeschetrockner mit flusensiebueberwachungsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8234042U IT8234042V0 (it) 1982-10-08 1982-10-08 Macchina asciugabiancheria con dispositivo di controllo del filtro per la filaccia.
IT3404282U 1982-10-08

Publications (3)

Publication Number Publication Date
EP0106289A2 true EP0106289A2 (de) 1984-04-25
EP0106289A3 EP0106289A3 (en) 1986-04-16
EP0106289B1 EP0106289B1 (de) 1988-05-18

Family

ID=11238963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110046A Expired EP0106289B1 (de) 1982-10-08 1983-10-07 Wäschetrockner mit Flusensiebüberwachungsvorrichtung

Country Status (4)

Country Link
EP (1) EP0106289B1 (de)
AT (1) ATE34415T1 (de)
DE (1) DE3376663D1 (de)
IT (1) IT8234042V0 (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030041385A (ko) * 2001-11-20 2003-05-27 (주)이젠텍 의류건조기
GB2382642A (en) * 2001-10-17 2003-06-04 Electrolux Home Prod Corp Filter for a laundry dryer
KR100452370B1 (ko) * 2002-07-11 2004-10-12 엘지전자 주식회사 건조기
KR100479075B1 (ko) * 2002-07-11 2005-03-28 엘지전자 주식회사 건조기
WO2005121437A1 (en) * 2004-06-05 2005-12-22 Lg Electronics, Inc. A lint filter assembly of laundry dryer
EP2050862A1 (de) * 2007-10-18 2009-04-22 BSH Bosch und Siemens Hausgeräte GmbH Flusenfiltervorrichtung und Hausgerät mit einer derartigen Flusenfiltervorrichtung
AU2007231880B2 (en) * 2006-11-08 2010-03-25 Lg Electronics Inc. Exhaust structure for clothes dryer in apartment building
EP2230349A1 (de) * 2009-03-20 2010-09-22 Electrolux Home Products Corporation N.V. Filterpatrone für Haushaltswäschetrockner und Haushaltswäschetrockner mit besagter Filterpatrone
US7926201B2 (en) 2006-09-06 2011-04-19 Lg Electronics Inc. Dryer with clogging detecting function
EP2407588A1 (de) 2010-07-16 2012-01-18 Electrolux Home Products Corporation N.V. Wäschetrockner mit einer Filterpatrone und Verfahren zur Herstellung einer solchen Patrone
EP2392724A3 (de) * 2011-09-12 2012-05-02 V-Zug AG Haushaltsgerät, insbesondere Wäschetrockner, mit Filtereinrichtung
EP2562304A1 (de) * 2011-08-24 2013-02-27 Electrolux Home Products Corporation N.V. Luftstromfilter für Wäschetrockner
US8387272B2 (en) 2006-09-06 2013-03-05 Lg Electronics Inc. Clogging detecting system for dryer
EP2570547A1 (de) 2011-09-16 2013-03-20 Electrolux Home Products Corporation N.V. Flusensieb für Wäschetrockner
US20130091726A1 (en) * 2011-10-13 2013-04-18 Youngsuk Kim Clothes treatment apparatus and method for controlling a clothes treatment apparatus
EP2584086A1 (de) * 2011-10-21 2013-04-24 Electrolux Home Products Corporation N.V. Wäschetrockner mit einem Feuchtigkeitssensor
GB2498457A (en) * 2012-01-11 2013-07-17 Lg Electronics Inc Clothes treating apparatus with detecting device for insertion of filter
WO2015016795A1 (en) * 2013-07-31 2015-02-05 Arcelik Anonim Sirketi A laundry dryer comprising a lint filter
EP2848729A1 (de) * 2013-08-01 2015-03-18 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrocknungsgerät
DE102014211304A1 (de) * 2014-06-13 2015-12-17 BSH Hausgeräte GmbH Filtervorrichtung für eine Wäschebehandlungsmaschine und Wäschebehandlungsmaschine mit einer solchen
US20160053428A1 (en) * 2013-04-03 2016-02-25 Electrolux Appliances Aktiebolag Tumble Dryer
CN106637878A (zh) * 2016-12-30 2017-05-10 无锡小天鹅股份有限公司 干衣机的风道组件和具有其的干衣机
WO2018086717A1 (en) * 2016-11-14 2018-05-17 Electrolux Appliances Aktiebolag Laundry treating machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4409531C1 (de) * 1994-03-21 1995-06-01 Bauknecht Hausgeraete Wäschetrockner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722751A (en) * 1952-02-18 1955-11-08 Maytag Co Fluid conductor and lint collector for clothes drier
US3287818A (en) * 1964-03-12 1966-11-29 Whirlpool Co Electronic dryer control pick-up device
DE2135932A1 (de) * 1971-07-15 1973-01-25 Siemens Elektrogeraete Gmbh Nach dem trommelprinzip mit luftumwaelzung arbeitender waeschetrockner
DE2747710A1 (de) * 1977-10-25 1979-04-26 Licentia Gmbh Dunstabzugshaube zur anordnung ueber kuechenherden
US4400971A (en) * 1981-05-29 1983-08-30 Electric Power Research Institute, Inc. Method and means for measuring particulate matter on a filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722751A (en) * 1952-02-18 1955-11-08 Maytag Co Fluid conductor and lint collector for clothes drier
US3287818A (en) * 1964-03-12 1966-11-29 Whirlpool Co Electronic dryer control pick-up device
DE2135932A1 (de) * 1971-07-15 1973-01-25 Siemens Elektrogeraete Gmbh Nach dem trommelprinzip mit luftumwaelzung arbeitender waeschetrockner
DE2747710A1 (de) * 1977-10-25 1979-04-26 Licentia Gmbh Dunstabzugshaube zur anordnung ueber kuechenherden
US4400971A (en) * 1981-05-29 1983-08-30 Electric Power Research Institute, Inc. Method and means for measuring particulate matter on a filter

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382642A (en) * 2001-10-17 2003-06-04 Electrolux Home Prod Corp Filter for a laundry dryer
GB2382642B (en) * 2001-10-17 2005-05-11 Electrolux Home Prod Corp Tumble dryer with improved filter
KR20030041385A (ko) * 2001-11-20 2003-05-27 (주)이젠텍 의류건조기
KR100452370B1 (ko) * 2002-07-11 2004-10-12 엘지전자 주식회사 건조기
KR100479075B1 (ko) * 2002-07-11 2005-03-28 엘지전자 주식회사 건조기
US7644515B2 (en) 2004-06-05 2010-01-12 Lg Electronics Inc. Lint filter assembly of laundry dryer
WO2005121437A1 (en) * 2004-06-05 2005-12-22 Lg Electronics, Inc. A lint filter assembly of laundry dryer
US7926201B2 (en) 2006-09-06 2011-04-19 Lg Electronics Inc. Dryer with clogging detecting function
US8387272B2 (en) 2006-09-06 2013-03-05 Lg Electronics Inc. Clogging detecting system for dryer
AU2007231880B2 (en) * 2006-11-08 2010-03-25 Lg Electronics Inc. Exhaust structure for clothes dryer in apartment building
EP2050862A1 (de) * 2007-10-18 2009-04-22 BSH Bosch und Siemens Hausgeräte GmbH Flusenfiltervorrichtung und Hausgerät mit einer derartigen Flusenfiltervorrichtung
EP2230349A1 (de) * 2009-03-20 2010-09-22 Electrolux Home Products Corporation N.V. Filterpatrone für Haushaltswäschetrockner und Haushaltswäschetrockner mit besagter Filterpatrone
RU2539402C2 (ru) * 2009-03-20 2015-01-20 Электролюкс Хоум Продактс Корпорейшн Н.В. Фильтрующий элемент для бытовой сушилки для белья и бытовая сушилка для белья, снабженная таким фильтрующим элементом
EP2407588A1 (de) 2010-07-16 2012-01-18 Electrolux Home Products Corporation N.V. Wäschetrockner mit einer Filterpatrone und Verfahren zur Herstellung einer solchen Patrone
EP2562304A1 (de) * 2011-08-24 2013-02-27 Electrolux Home Products Corporation N.V. Luftstromfilter für Wäschetrockner
EP2392724A3 (de) * 2011-09-12 2012-05-02 V-Zug AG Haushaltsgerät, insbesondere Wäschetrockner, mit Filtereinrichtung
EP2570547A1 (de) 2011-09-16 2013-03-20 Electrolux Home Products Corporation N.V. Flusensieb für Wäschetrockner
US20130091726A1 (en) * 2011-10-13 2013-04-18 Youngsuk Kim Clothes treatment apparatus and method for controlling a clothes treatment apparatus
US8997377B2 (en) * 2011-10-13 2015-04-07 Lg Electronics Inc. Clothes treatment apparatus and method for controlling a clothes treatment apparatus
EP2584086A1 (de) * 2011-10-21 2013-04-24 Electrolux Home Products Corporation N.V. Wäschetrockner mit einem Feuchtigkeitssensor
GB2498457A (en) * 2012-01-11 2013-07-17 Lg Electronics Inc Clothes treating apparatus with detecting device for insertion of filter
US9758920B2 (en) 2012-01-11 2017-09-12 Lg Electronics Inc. Clothes treating apparatus with detecting device for insertion of filter
KR20130082365A (ko) * 2012-01-11 2013-07-19 엘지전자 주식회사 필터삽입 감지장치 및 이를 장착한 의류건조기
GB2498457B (en) * 2012-01-11 2014-05-14 Lg Electronics Inc Clothes treating apparatus with detecting device for insertion of filter
US9250016B2 (en) 2012-01-11 2016-02-02 Lg Electronics Inc. Clothes treating apparatus with detecting device for insertion of filter
DE102013000446B4 (de) 2012-01-11 2018-12-20 Lg Electronics Inc. Wäschebehandlungsvorrichtung mit Erfassungsvorrichtung für den Filtereinsatz
US20160053428A1 (en) * 2013-04-03 2016-02-25 Electrolux Appliances Aktiebolag Tumble Dryer
WO2015016795A1 (en) * 2013-07-31 2015-02-05 Arcelik Anonim Sirketi A laundry dryer comprising a lint filter
AU2014296880B2 (en) * 2013-07-31 2016-11-03 Arcelik Anonim Sirketi A laundry dryer comprising a lint filter
EP2848729A1 (de) * 2013-08-01 2015-03-18 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrocknungsgerät
DE102014211304A1 (de) * 2014-06-13 2015-12-17 BSH Hausgeräte GmbH Filtervorrichtung für eine Wäschebehandlungsmaschine und Wäschebehandlungsmaschine mit einer solchen
WO2018086717A1 (en) * 2016-11-14 2018-05-17 Electrolux Appliances Aktiebolag Laundry treating machine
CN109863268A (zh) * 2016-11-14 2019-06-07 伊莱克斯家用电器股份公司 衣物处理机
CN109863268B (zh) * 2016-11-14 2021-05-25 伊莱克斯家用电器股份公司 衣物处理机
AU2016429333B2 (en) * 2016-11-14 2023-05-11 Electrolux Appliances Aktiebolag Laundry treating machine
CN106637878B (zh) * 2016-12-30 2018-06-19 无锡小天鹅股份有限公司 干衣机的风道组件和具有其的干衣机
CN106637878A (zh) * 2016-12-30 2017-05-10 无锡小天鹅股份有限公司 干衣机的风道组件和具有其的干衣机

Also Published As

Publication number Publication date
IT8234042V0 (it) 1982-10-08
ATE34415T1 (de) 1988-06-15
EP0106289A3 (en) 1986-04-16
DE3376663D1 (en) 1988-06-23
EP0106289B1 (de) 1988-05-18

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