EP0893533A2 - Sèche-linge - Google Patents

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Publication number
EP0893533A2
EP0893533A2 EP98305572A EP98305572A EP0893533A2 EP 0893533 A2 EP0893533 A2 EP 0893533A2 EP 98305572 A EP98305572 A EP 98305572A EP 98305572 A EP98305572 A EP 98305572A EP 0893533 A2 EP0893533 A2 EP 0893533A2
Authority
EP
European Patent Office
Prior art keywords
drum
laundry
air
laundry dryer
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.)
Withdrawn
Application number
EP98305572A
Other languages
German (de)
English (en)
Other versions
EP0893533A3 (fr
Inventor
Derek John Watts
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.)
Indesit Co UK Ltd
Original Assignee
General Domestic Appliances Ltd
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 General Domestic Appliances Ltd filed Critical General Domestic Appliances Ltd
Publication of EP0893533A2 publication Critical patent/EP0893533A2/fr
Publication of EP0893533A3 publication Critical patent/EP0893533A3/fr
Withdrawn legal-status Critical Current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
    • D06F58/30—Drying processes 
    • 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

Definitions

  • This invention relates to laundry dryers.
  • a conventional laundry dryer typically comprises a drum, a motor for rotating the drum and a heater for heating air to be passed through the drum.
  • Such a dryer operates in accordance with a programme selected by a user to dry damp laundry placed into the rotatable drum.
  • a problem which may be encountered with such laundry dryers is that, if dry laundry is not taken out of the drum soon after the drying programme is finished, the items of laundry tend to become creased due to the weight of other items resting on them. The creases can make the laundry more difficult to iron.
  • the invention provides a laundry dryer comprising a drum, a motor for rotating the drum and a heater for heating air to be passed through the drum, characterised in that there is provided selectively operable means for producing a conditioning sequence, to reduce creases in laundry in the drum, with heated air and unheated air being passed through the rotating drum.
  • the drum is arranged to rotate in opposite rotational directions during the conditioning sequence. This feature prevents entanglement of the items of laundry.
  • the laundry dryer includes advantageously means for producing an audible signal when the conditioning sequence is finished, to alert the user of the dryer.
  • the dryer may be arranged so that the period of time during which heated air is provided to the dry laundry is between two and four times longer than the period during which unheated air is provided.
  • the dryer may be arranged so that the overall length of time of the conditioning sequence is between five and twenty minutes.
  • the laundry dryer comprises a rotatable drum 1 housed in a cabinet 2. the drum being closed by a door 3.
  • the drum 1 is rotated by a motor (not shown) by means of, for cxample, a drive belt.
  • a heater (also not shown) is provided within the cabinet 2 of the dryer. In operation, the heater heats air which is passed through the drum 1 while the drum rotates, so that damp laundry placed in the drum is tumbled in a warm air stream.
  • the laundry dryer further comprises a control panel 4, so that a user of the dryer can select a programme, according to which the dryer operates.
  • the control panel 4 comprises a heat setting selector 5 and a timer control 6.
  • a user of the laundry dryer places a load of damp laundry in the drum 1, selects a heat setting by, for example, depressing heat setting selector 5, and selects a drying time by turning timer control 6. which is shown in more detail in Figure 2.
  • a plurality of periods of time, expressed in minutes, are printed on the control panel 4, around the timer control 6.
  • the user selects a drying time by rotating the timer control 6 clockwise until it points to the desired time period.
  • the laundry dryer then operates according to the selected programme, the last few minutes of which involves unheated air being passed through the rotating drum.
  • An audible signal such as a buzzer is arranged to sound on completion of the drying programme. to alert the user. If the user does not remove the dry load from the drum 1 soon after the drying programme has finished, creases begin to form in the laundry. This is particularly so for items of laundry resting at the bottom of the drum because these items have the weight of the remainder of the laundry acting on them.
  • means for producing a conditioning sequence which is selectively operable by means of the timer control 6.
  • the timer control 6 points to zero, as shown in Figure 2.
  • the user can rotate timer control 6 to the mark indicated by the reference numeral 7. This operation initiates the conditioning sequence.
  • the conditioning sequence comprises a first time period, during which heated air is passed through the rotating drum, followed by a second period during which unheated air is passed through the rotating drum.
  • the heating and subsequent cooling of the laundry causes the fibres of the material to relax, which reduces creases in the material and makes the laundry easier to iron.
  • the rotation of the drum 1 further reduces creasing, by keeping the items of laundry moving so that no item is compressing another.
  • the conditioning sequence may not always remove all of the creases in the laundry.
  • the drum 1 can be arranged to rotate in one direction throughout the conditioning sequence or to change direction part way through the sequence. Alternatively, the direction of rotation can be changed periodically. Changing the direction of rotation of the drum 1 prevents entanglement of the laundry.
  • the conditioning sequence typically takes approximately 10 minutes, of which approximately 71 ⁇ 2 minutes involves passing heated air through the drum, and 21 ⁇ 2 minutes involves passing unheated air through the drum.
  • the invention is not limited to these time periods.
  • timer control 6 points to the mark indicated by the reference numeral 8, and an audible signal is arranged to sound to alert the user.
  • the audible signal may be the buzzer used to indicate completion of the main drying programme.
  • a light, or other visual indicator can be employed.
  • the invention is not limited to conditioning a load which has firstly been dried in the dryer.
  • clothes which have become crumpled during a period of storage in, say, a drawer can be conditioned in the dryer.
  • the user avoids the conventional drying programmes and instead turns timer control 6 to mark 7, to initiate the conditioning sequence.
  • the invention can also be used to condition laundry which has been hung out to dry on a washing line. Laundry dried in this manner can become stiff, due to being subjected to prolonged periods of warm air, which can overdry the laundry. The user again avoids the conventional drying programme and instead rotates timer control 6 to mark 7 in order to start the sequence.
  • conditioning sequence need not be started by rotation of the timer control.
  • a depressable button, or some other mechanical or electrical device could be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP98305572A 1997-07-26 1998-07-14 Sèche-linge Withdrawn EP0893533A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9715712A GB2327747A (en) 1997-07-26 1997-07-26 Laundry Dryer
GB9715712 1997-07-26

Publications (2)

Publication Number Publication Date
EP0893533A2 true EP0893533A2 (fr) 1999-01-27
EP0893533A3 EP0893533A3 (fr) 1999-06-02

Family

ID=10816439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98305572A Withdrawn EP0893533A3 (fr) 1997-07-26 1998-07-14 Sèche-linge

Country Status (2)

Country Link
EP (1) EP0893533A3 (fr)
GB (1) GB2327747A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005064071A3 (fr) * 2003-12-23 2006-02-23 Bsh Bosch Siemens Hausgeraete Procede et dispositif pour secher du linge
US20140338219A1 (en) * 2009-07-01 2014-11-20 Lg Electronics Inc. Laundry machine and controlling method thereof
EP3138954A1 (fr) * 2015-09-06 2017-03-08 BSH Hausgeräte GmbH Machine à laver et procédé pour le soin du linge à l'aide de celui-ci

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398460A (en) * 1966-09-26 1968-08-27 Whirlpool Co Anti-wrinkle cycle for dryers with intermittent signaling means
US4275508A (en) * 1980-01-09 1981-06-30 Eaton Corporation Clothes dryer temperature control system
US4418271A (en) * 1980-10-02 1983-11-29 Emhart Industries, Inc. Control system including a timing mechanism for a drying apparatus
US4586267A (en) * 1984-08-07 1986-05-06 Intraspec, Inc. Automated reversible-dryer control system
US4763425A (en) * 1987-06-25 1988-08-16 Speed Queen Company Automatic clothes dryer
JPH078691A (ja) * 1993-06-24 1995-01-13 Toshiba Corp 衣類乾燥機

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005064071A3 (fr) * 2003-12-23 2006-02-23 Bsh Bosch Siemens Hausgeraete Procede et dispositif pour secher du linge
US20140338219A1 (en) * 2009-07-01 2014-11-20 Lg Electronics Inc. Laundry machine and controlling method thereof
US9441323B2 (en) * 2009-07-01 2016-09-13 Lg Electronics Inc. Laundry machine and controlling method thereof
EP3138954A1 (fr) * 2015-09-06 2017-03-08 BSH Hausgeräte GmbH Machine à laver et procédé pour le soin du linge à l'aide de celui-ci
CN106498653A (zh) * 2015-09-06 2017-03-15 博西华电器（江苏）有限公司 衣物护理机及其护理衣物的方法
CN106498653B (zh) * 2015-09-06 2022-06-14 博西华电器（江苏）有限公司 衣物护理机及其护理衣物的方法

Also Published As

Publication number Publication date
EP0893533A3 (fr) 1999-06-02
GB2327747A (en) 1999-02-03
GB9715712D0 (en) 1997-10-01

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