WO2009010249A1 - Procédé de commande pour commander un sèche-linge à tambour pour sécher de la laine lavée - Google Patents

Procédé de commande pour commander un sèche-linge à tambour pour sécher de la laine lavée Download PDF

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Publication number
WO2009010249A1
WO2009010249A1 PCT/EP2008/005705 EP2008005705W WO2009010249A1 WO 2009010249 A1 WO2009010249 A1 WO 2009010249A1 EP 2008005705 W EP2008005705 W EP 2008005705W WO 2009010249 A1 WO2009010249 A1 WO 2009010249A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
control method
laundry
wool
rotation speed
Prior art date
Application number
PCT/EP2008/005705
Other languages
English (en)
Inventor
Silvano Cimetta
Mirko Gasparini
Fabio Pellegrino
Original Assignee
Electrolux Home Products Corporation N.V.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38663069&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2009010249(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electrolux Home Products Corporation N.V. filed Critical Electrolux Home Products Corporation N.V.
Publication of WO2009010249A1 publication Critical patent/WO2009010249A1/fr

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
    • 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.
  • the rack represents an extra cost for the customer, and is also cumbersome and therefore difficult to store when not in use.
  • 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 .
  • Figure 1 shows a schematic side view of a tumble laundry- drier implementing a control method for drying wool laundry in accordance with the present invention
  • Figure 2 shows a graph of the rotation speed of a revolving drum of the Figure 1 tumble laundry drier during a wool drying cycle .
  • 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 .
  • 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.
  • electronic control unit 12 also controls electric motor 8 to rotate drum 3 about rotation axis 6 at a variable rotation speed n. More specifically, when designing tumble laundry drier 1, a rotation speed n 2 is determined at which centrifugal acceleration of the inner surface of drum 3 equals gravitational acceleration (i.e. 1 g) . Rotation speed n 2 is easily calculated using the following equations :
  • n is the rotation speed of drum 3 measured in radiants/second
  • ⁇ is the rotation speed of drum 3 measured in revolutions/minute
  • a is the centrifugal acceleration of drum 3
  • r is the radius of drum 3.
  • drum 3 is rotated at a constant rotation speed ni 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 x 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 ni 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 Ti 1 must not be too close to rotation speed n 2 .
  • rotation speed U 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) .
  • deceleration/acceleration values of drum 3 are important by greatly reducing rubbing (and so preventing felting) of wool laundry 5 during deceleration/acceleration of drum 3.
  • 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.
  • 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.
  • 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)

Abstract

L'invention porte sur un procédé de commande pour commander un sèche-linge à tambour (1) pour sécher de la laine lavée(5). Le procédé de commande consiste : à charger la laine lavée(5) dans le tambour (3) du sèche-linge à tambour (1) ; à introduire un courant d'air de séchage dans le tambour (3) ; à faire tourner le tambour (3) à une première vitesse de rotation (n1) supérieure à une seconde vitesse de rotation (n2) à laquelle l'accélération centrifuge de la surface interne du tambour (3) est égale à l'accélération gravitationnelle, de telle sorte que la laine lavée(5) est pressée par une force centrifuge contre la surface interne du tambour (3) au lieu de tomber à l'intérieur du tambour (3) ; et à stopper de façon cyclique la rotation du tambour (3) par la remise à zéro de la vitesse de rotation (n) puis une nouvelle accélération du tambour (3) à la première vitesse de rotation (n1) pour réarranger la laine lavée (5) à l'intérieur du tambour (3).
PCT/EP2008/005705 2007-07-13 2008-07-11 Procédé de commande pour commander un sèche-linge à tambour pour sécher de la laine lavée WO2009010249A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07112493.7 2007-07-13
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 (1)

Publication Number Publication Date
WO2009010249A1 true WO2009010249A1 (fr) 2009-01-22

Family

ID=38663069

Family Applications (1)

Application Number Title Priority Date Filing Date
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

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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114672970A (zh) * 2022-02-18 2022-06-28 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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2612967B1 (fr) * 2010-07-09 2015-12-09 LG Electronics Inc. Procédé de fonctionnement d'appareil de traitement pour vêtements
EP2458076B1 (fr) 2010-11-29 2014-01-08 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
ITTO20101070A1 (it) * 2010-12-27 2012-06-28 Indesit Co Spa Procedimento e macchina per l'asciugatura di biancheria
EP2487291B1 (fr) 2011-02-11 2015-07-01 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
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
KR101594368B1 (ko) * 2013-09-03 2016-02-16 엘지전자 주식회사 의류처리장치 및 그 제어방법
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
KR102661663B1 (ko) * 2018-12-13 2024-04-29 엘지전자 주식회사 인덕션 히터를 갖는 세탁장치 및 이의 제어방법

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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

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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

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* 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114672970A (zh) * 2022-02-18 2022-06-28 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
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

Also Published As

Publication number Publication date
DE602007012679D1 (de) 2011-04-07
EP2014822B1 (fr) 2011-02-23
EP2014822A1 (fr) 2009-01-14
RU2010105034A (ru) 2011-08-20
PL2014822T3 (pl) 2011-09-30
ATE499480T1 (de) 2011-03-15
ES2361775T3 (es) 2011-06-22
RU2467111C2 (ru) 2012-11-20

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