EP2014822A1 - Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine - Google Patents

Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine Download PDF

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Publication number
EP2014822A1
EP2014822A1 EP07112493A EP07112493A EP2014822A1 EP 2014822 A1 EP2014822 A1 EP 2014822A1 EP 07112493 A EP07112493 A EP 07112493A EP 07112493 A EP07112493 A EP 07112493A EP 2014822 A1 EP2014822 A1 EP 2014822A1
Authority
EP
European Patent Office
Prior art keywords
drum
control method
laundry
wool
rotation speed
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
EP07112493A
Other languages
German (de)
English (en)
Other versions
EP2014822B1 (fr
Inventor
Silvano Cimetta
Mirko Gasparini
Fabio Pellegrino
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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
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Priority to DE602007012679T priority Critical patent/DE602007012679D1/de
Priority to PL07112493T priority patent/PL2014822T3/pl
Priority to EP07112493A priority patent/EP2014822B1/fr
Priority to ES07112493T priority patent/ES2361775T3/es
Priority to AT07112493T priority patent/ATE499480T1/de
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to RU2010105034/12A priority patent/RU2467111C2/ru
Priority to PCT/EP2008/005705 priority patent/WO2009010249A1/fr
Publication of EP2014822A1 publication Critical patent/EP2014822A1/fr
Publication of EP2014822B1 publication Critical patent/EP2014822B1/fr
Application granted granted Critical
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F58/32—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
    • 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
    • D06F2101/10—Spin 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
    • 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
    • D06F2103/10—Humidity expressed as capacitance or resistance
    • 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
    • D06F2103/34—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
    • D06F2103/44—Current or voltage
    • 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
    • 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
    • D06F2105/62—Stopping or disabling machine operation

Definitions

  • the present invention relates to a control method for controlling a tumble laundry drier for drying wool laundry.
  • Drying woollens poses serious difficulties, on account of the tendency of woollens to felt, thus resulting in irreparable damage. Felting of woollens is caused by overheating the wool, and by the woollens rubbing against the inner surface of the drum or against other woollens.
  • Felting of woollens caused by overheating can be prevented by simply reducing and accurately controlling heating of the woollens during the drying process.
  • Drying woollens in a rack results in uneven drying, in that, at the end of the drying process, the woollens are perfectly dry on the outside, but still relatively damp on the inside. Furthermore, the rack represents an extra cost for the customer, and is also cumbersome and therefore difficult to store when not in use. Finally, using a rack, the relative humidity of the woolens cannot be measured during the drying cycle, to stop the drying cycle when the humidity of the woollens reaches a given value. Consequently, using a rack, the drying cycle must be of constant predetermined duration, regardless of the actual weight and initial humidity of the woollens.
  • Number 1 in Figure 1 indicates as a whole a laundry drier comprising a casing 2 resting on a floor on a number of feet.
  • Casing 2 supports a revolving laundry drum 3, which defines a drying chamber 4 for the laundry 5 to be dried, rotates about a horizontal rotation axis 6 (in alternative embodiments not shown, rotation axis 6 may be tilted or vertical), and has a front access opening closed by a door 7 hinged to a front wall of casing 2.
  • Drum 3 is rotated by an electric motor 8, and is fed through with a stream of drying air fed into drum 3 by a centrifugal fan 9 and heated by a heating device 10.
  • fan 9 produces a stream of dry air that is fed to heating device 10 and then into drum 3 through a perforated back of the drum. After contacting laundry 5, the dry air flows out of drum 3 to a condenser 11, in which it is cooled to condense the laundry moisture contained in it. For which purpose, condenser 11 is fed through with cooling air drawn in from outside tumble laundry drier 1; and the dry air from condenser 11 is drawn in again by fan 9.
  • condenser 11 is referred to here purely by way of example in connection with one embodiment of the present invention, and may be omitted in the case of an exhaust-type tumble laundry drier 1 (i.e. in which the hot drying air from drum 3 is exhausted directly to the outside).
  • the rotation speed of electric motor 8, which rotates drum 3 about rotation axis 6, is controlled by an electronic control unit 12, which receives the input commands from the user of tumble laundry drier 1. More specifically, electronic control unit 12 performs a wool drying cycle specially designed for felt-free drying wool laundry 5.
  • electronic control unit 12 controls heating device 10 to reduce heating of the drying air and hence the temperature of wool laundry 5 to well below the felting temperature of the wool.
  • drum 3 is rotated at a constant rotation speed n 1 greater than rotation speed n 2 at which centrifugal acceleration of the inner surface of drum 3 equals gravitational acceleration, so wool laundry 5 is pressed by centrifugal force against the inner surface of drum 3, as opposed to dropping inside drum 3.
  • rotation of drum 3 is stopped cyclically by zeroing rotation speed n, and drum 3 is re-accelerated back to rotation speed n 1 to rearrange wool laundry 5 inside drum 3.
  • centrifugal acceleration greater than gravitational acceleration i.e.
  • wool laundry 5 is rearranged cyclically inside drum 3 by cyclically stopping drum 3 for about 2 seconds (generally about 1-3 seconds).
  • rotation of drum 3 should be stopped cyclically every 5-15 minutes and, preferably, about every 10 minutes.
  • rotation speed n 1 is about 70 rpm (revolutions per minute) and, more generally, ranges between 65 and 75 rpm, for a drum 3 of 575 mm in diameter.
  • rotation speed n 1 must not be too close to rotation speed n 2 .
  • rotation speed n 1 must not be too far from rotation speed n 2 , to avoid excessive mechanical stress of wool laundry 5 caused by high centrifugal acceleration.
  • rotation speed n of drum 3 is decreased/increased with a deceleration/acceleration of about 20-35 revolutions/second 2 (i.e. drum 3 needs about 2-3 seconds to decelerate/accelerate from 70/0 rpm to 0/70 rpm).
  • drum 3 needs about 2-3 seconds to decelerate/accelerate from 70/0 rpm to 0/70 rpm.
  • electronic control unit 12 determines the position of wool laundry 5 inside drum 3, and stops drum 3 so that, when drum 3 is stopped, wool laundry 5 is at the bottom of drum 3. This prevents wool laundry 5 from dropping inside drum 3 when the drum is stopped, and so further reduces mechanical stress of wool laundry 5. More specifically, drum 3 has three lifters 15, each with a sensor 16 for sensing the presence of wool laundry 5; and electronic control unit 12 determines the lifter/s 15 contacting wool laundry 5, and stops drum 3 so that, when drum 3 is stopped, the lifter/s 15 contacting wool laundry 5 is/are in a low position (for example, by commencing stoppage of drum 3 when the lifter/s 15 contacting wool laundry 5 is/are about 120° upstream from its/their lowest position).
  • Figure 2 shows a graph of rotation speed n of revolving drum 3 during the wool drying cycle. As shown in Figure 2 , during the wool drying cycle, rotation speed n is kept substantially constant at rotation speed n 1 greater than rotation speed n 2 , and drum 3 is stopped cyclically.
  • Electronic control unit 12 is connected to a humidity sensor 13 to measure the relative humidity of wool laundry 5 during the wool drying cycle.
  • Humidity sensor 13 comprises a pair of electrodes 14 contacting wool laundry 5 inside drum 3 to measure the resistance/conductivity of wool laundry 5, and uses the resistance/conductivity of wool laundry 5 to determine the humidity of wool laundry 5.
  • Electronic control unit 12 stops the wool drying cycle when the electric resistance/conductivity between the two electrodes 14 is above/below a resistance/conductivity threshold (i.e. the humidity of wool laundry 5 is below a humidity threshold).
  • the resistance/conductivity measured between the two electrodes 14 immediately after a cyclic stop in rotation of drum 3 is compared with the resistance/conductivity threshold.
  • Wool drying cycle as described above has numerous advantages, by being cheap and easy to implement in a standard tumble drier (no additional components, other than those normally featured in a modern tumble drier are required), and by enabling careful (i.e. felt-free) but nevertheless effective drying of wool laundry. More specifically, determining the end of the drying cycle on the basis of the measured humidity (i.e. electric resistance/conductivity) of the laundry to be dried, the wool drying cycle as described above minimizes mechanical stress of the wool laundry (i.e. eliminates undue mechanical stress caused by a longer than necessary drying cycle), is effective (i.e. at the end of the drying cycle, the wool laundry is as dry as necessary), and is efficient (i.e. the drying cycle wastes no electric energy) regardless of variations in the weight and initial humidity of the wool laundry to be dried.
  • the measured humidity i.e. electric resistance/conductivity

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
EP07112493A 2007-07-13 2007-07-13 Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine Revoked EP2014822B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PL07112493T PL2014822T3 (pl) 2007-07-13 2007-07-13 Sposób sterowania, do sterowania bębnową suszarką do prania przy suszeniu artykułów wełnianych
EP07112493A EP2014822B1 (fr) 2007-07-13 2007-07-13 Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine
ES07112493T ES2361775T3 (es) 2007-07-13 2007-07-13 Método de control para controlar una secadora de ropa de volteador para secar ropa de lana.
AT07112493T ATE499480T1 (de) 2007-07-13 2007-07-13 Steuerungsverfahren zur steuerung eines trommelwäschetrockners zur trocknung von wollartikeln
DE602007012679T DE602007012679D1 (de) 2007-07-13 2007-07-13 Steuerungsverfahren zur Steuerung eines Trommelwäschetrockners zur Trocknung von Wollartikeln
RU2010105034/12A RU2467111C2 (ru) 2007-07-13 2008-07-11 Способ управления барабанной сушильной машиной для сушки белья из шерсти
PCT/EP2008/005705 WO2009010249A1 (fr) 2007-07-13 2008-07-11 Procédé de commande pour commander un sèche-linge à tambour pour sécher de la laine lavée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07112493A EP2014822B1 (fr) 2007-07-13 2007-07-13 Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine

Publications (2)

Publication Number Publication Date
EP2014822A1 true EP2014822A1 (fr) 2009-01-14
EP2014822B1 EP2014822B1 (fr) 2011-02-23

Family

ID=38663069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07112493A Revoked EP2014822B1 (fr) 2007-07-13 2007-07-13 Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine

Country Status (7)

Country Link
EP (1) EP2014822B1 (fr)
AT (1) ATE499480T1 (fr)
DE (1) DE602007012679D1 (fr)
ES (1) ES2361775T3 (fr)
PL (1) PL2014822T3 (fr)
RU (1) RU2467111C2 (fr)
WO (1) WO2009010249A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2458076A1 (fr) 2010-11-29 2012-05-30 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif et procédé de contrôle d'un sèche-linge à tambour rotatif pour sécher le linge délicat
EP2468950A1 (fr) * 2010-12-27 2012-06-27 Indesit Company S.p.A. Procédé et machine permettant de sécher le linge
EP2487291A1 (fr) 2011-02-11 2012-08-15 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif et procédé de contrôle d'un sèche-linge à tambour rotatif pour sécher le linge délicat
CN102899871A (zh) * 2012-10-11 2013-01-30 海尔集团公司 一种通过滚筒速度变化提高衣物烘干效果的方法及干衣机
EP2612967A3 (fr) * 2010-07-09 2013-09-04 LG Electronics, Inc. Procédé de fonctionnement d'appareil de traitement pour vêtements
US20150059202A1 (en) * 2013-09-03 2015-03-05 Lg Electronics Inc. Laundry treatment apparatus and control method thereof
US20230002956A1 (en) * 2018-12-13 2023-01-05 Lg Electronics Inc. Laundry treating apparatus having induction heater and control method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016113723A1 (de) 2016-07-26 2018-02-01 Miele & Cie. Kg Verfahren zum Behandeln von Wäsche, Verfahren und Vorrichtung zum Betreiben einer Wäschebehandlungsmaschine und Wäschebehandlungsmaschine zum Behandeln von Wäsche
CN114672970B (zh) * 2022-02-18 2023-12-26 无锡小天鹅电器有限公司 衣物处理设备的控制方法和衣物处理设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2306111A1 (de) * 1973-02-08 1974-08-22 Licentia Gmbh Verfahren zum trocknen von empfindlichen gewebearten
EP1103648A2 (fr) * 1999-11-29 2001-05-30 Electrolux Zanussi S.p.A. Procédé et sèche-linge à condensation pour séchage de vêtements
US20040118012A1 (en) * 2001-01-30 2004-06-24 Barbara Gruble Drying rack for a laundry dryer
US20060096120A1 (en) * 2001-01-30 2006-05-11 Bsh Bosch Und Siemens Hausgerate Gmbh Drying rack for a laundry dryer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1213095A1 (ru) * 1984-01-26 1986-02-23 Всесоюзный Научно-Исследовательский Экспериментально-Конструкторский Институт Электробытовых Машин И Приборов Устройство дл сушки текстильных изделий
JP2002233697A (ja) * 2001-02-09 2002-08-20 Rinnai Corp 衣類乾燥機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2306111A1 (de) * 1973-02-08 1974-08-22 Licentia Gmbh Verfahren zum trocknen von empfindlichen gewebearten
EP1103648A2 (fr) * 1999-11-29 2001-05-30 Electrolux Zanussi S.p.A. Procédé et sèche-linge à condensation pour séchage de vêtements
US20040118012A1 (en) * 2001-01-30 2004-06-24 Barbara Gruble Drying rack for a laundry dryer
US20060096120A1 (en) * 2001-01-30 2006-05-11 Bsh Bosch Und Siemens Hausgerate Gmbh Drying rack for a laundry dryer

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2612967A3 (fr) * 2010-07-09 2013-09-04 LG Electronics, Inc. Procédé de fonctionnement d'appareil de traitement pour vêtements
US8806775B2 (en) 2010-07-09 2014-08-19 Lg Electronics Inc. Method for operating clothes treating apparatus
WO2012072506A1 (fr) 2010-11-29 2012-06-07 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif et procédé de commande d'un sèche-linge à tambour rotatif pour sécher du linge délicat
US9624619B2 (en) 2010-11-29 2017-04-18 Electrolux Home Products Corporation N.V. Rotatable-drum laundry drier and method of controlling a rotatable-drum laundry drier to dry delicate laundry
EP2458076A1 (fr) 2010-11-29 2012-05-30 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif et procédé de contrôle d'un sèche-linge à tambour rotatif pour sécher le linge délicat
EP2468950A1 (fr) * 2010-12-27 2012-06-27 Indesit Company S.p.A. Procédé et machine permettant de sécher le linge
ITTO20101070A1 (it) * 2010-12-27 2012-06-28 Indesit Co Spa Procedimento e macchina per l'asciugatura di biancheria
CN103348058A (zh) * 2011-02-11 2013-10-09 伊莱克斯家用产品股份有限公司 用于烘干柔和衣物的可旋转筒式衣物烘干机及其控制方法
WO2012107280A2 (fr) 2011-02-11 2012-08-16 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif et procédé de commande d'un sèche-linge à tambour rotatif pour sécher du linge délicat
CN103348058B (zh) * 2011-02-11 2016-03-16 伊莱克斯家用产品股份有限公司 用于烘干柔和衣物的可旋转筒式衣物烘干机及其控制方法
EP2487291A1 (fr) 2011-02-11 2012-08-15 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif et procédé de contrôle d'un sèche-linge à tambour rotatif pour sécher le linge délicat
US9637859B2 (en) 2011-02-11 2017-05-02 Electronics Home Products Corporation N.V. Rotatable-drum laundry drier and method of controlling a rotatable-drum laundry drier to dry delicate laundry
CN102899871A (zh) * 2012-10-11 2013-01-30 海尔集团公司 一种通过滚筒速度变化提高衣物烘干效果的方法及干衣机
CN102899871B (zh) * 2012-10-11 2017-07-18 青岛海尔滚筒洗衣机有限公司 一种通过滚筒速度变化提高衣物烘干效果的方法及干衣机
US20150059202A1 (en) * 2013-09-03 2015-03-05 Lg Electronics Inc. Laundry treatment apparatus and control method thereof
US9359715B2 (en) * 2013-09-03 2016-06-07 Lg Electornics Inc. Laundry treatment apparatus and control method thereof
US20230002956A1 (en) * 2018-12-13 2023-01-05 Lg Electronics Inc. Laundry treating apparatus having induction heater and control method thereof
US11840794B2 (en) * 2018-12-13 2023-12-12 Lg Electronics Inc. Laundry treating apparatus having induction heater and control method thereof

Also Published As

Publication number Publication date
RU2010105034A (ru) 2011-08-20
ES2361775T3 (es) 2011-06-22
DE602007012679D1 (de) 2011-04-07
WO2009010249A1 (fr) 2009-01-22
EP2014822B1 (fr) 2011-02-23
RU2467111C2 (ru) 2012-11-20
ATE499480T1 (de) 2011-03-15
PL2014822T3 (pl) 2011-09-30

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