EP2281081A1 - Method and device for treating laundry in a washing machine or washing/drying machine or clothes dryer - Google Patents
Method and device for treating laundry in a washing machine or washing/drying machine or clothes dryerInfo
- Publication number
- EP2281081A1 EP2281081A1 EP08806864A EP08806864A EP2281081A1 EP 2281081 A1 EP2281081 A1 EP 2281081A1 EP 08806864 A EP08806864 A EP 08806864A EP 08806864 A EP08806864 A EP 08806864A EP 2281081 A1 EP2281081 A1 EP 2281081A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine
- laundry
- steam
- washing
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005406 washing Methods 0.000 title claims abstract description 26
- 238000001035 drying Methods 0.000 title claims abstract description 10
- 238000001704 evaporation Methods 0.000 claims abstract description 16
- 230000008020 evaporation Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000009499 grossing Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010412 laundry washing Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
-
- 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
- D06F2105/38—Conditioning or finishing, e.g. control of perfume injection
- D06F2105/40—Conditioning or finishing, e.g. control of perfume injection using water or steam
-
- 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
- D06F2105/58—Indications or alarms to the control system or to the user
- D06F2105/60—Audible signals
-
- 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
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
-
- 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
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/40—Steam generating arrangements
Definitions
- the present invention relates to a method for treating laundry in a washing machine or washing/drying machine or clothes dryer.
- washing machines In traditional washing machines, during the wash and spin cycles the wet laundry is subjected to centrifugal force exerted by the rotating drum, which causes formation of creases so that the clothes are extracted creased and must then be ironed.
- washing machines are known, such as the one described in patent application EP 1507028 by LG ELECTRONICS INC., which carry out a crease smoothing step by supplying heat to the laundry within the washing machine itself.
- a steam flow is generated and directed against the laundry as it is turning in the drum; as known, steam will smooth out laundry creases, thus simplifying and speeding up the subsequent ironing process.
- the crease smoothing step is subdivided into two distinct cycles: an initial steam cycle, lasting for a preset time (e.g. two minutes) as the drum is rotating, and a subsequent laundry cooling cycle taking place with no steam production as the drum is rotating.
- a preset time e.g. two minutes
- crease smoothing step is illustrated in Fig. 1, which clearly shows that steam is supplied to the laundry during the steam cycle (from time t pl to time t p2 ), which is then stopped and followed by the cooling cycle (from time t p2 to time t p3 ), at the end of which
- Said cycles comprise a single operational step wherein the laundry is subjected to a steam flow in order to remove any smells and to smooth the creases.
- the object of the present invention is to provide an alternative method and an alternative laundry washing machine which allow to overcome the above-mentioned problems.
- the present invention is based on the idea of an alarm going off at the end of an optimal duration of the steam cycle, while however continuing the latter even after the alarm has gone off.
- the steam cycle ends when a predetermined time has elapsed after the alarm has gone off.
- Fig. 1 is a simplified diagram which defines the various instants of the crease smoothing step according to the prior art
- Fig. 2 is a simplified diagram which defines the various instants of the laundry treatment method according to the present invention.
- Fig. 3 is a simplified diagram of a second embodiment of the present invention.
- Fig. 1 illustrates the above-described crease smoothing cycle according to the prior art; without further repetitions, the alarm signal goes off at the end of the cooling cycle that follows the steam cycle.
- FIG. 2 With reference to Fig. 2, there is shown a simplified diagram which is useful to understand the method in accordance with the teachings of the present invention.
- the following example refers to a washing machine wherein the laundry to be treated is placed inside a drum which is rotated by a motor within a wash tub.
- the drum rotation and in general the operation of the various machine components are controlled by a control unit adapted to implement the method described below.
- the laundry treatment method (e.g. used for smoothing creases) starts at time ti, when steam is supplied into the tub of the washing machine for the purpose of smoothing the laundry loaded therein.
- the crease smoothing process begins at time t ! with a steam cycle 1 , which goes on until time t 3 .
- the machine drum is preferably kept turning, more preferably in alternate directions.
- Time t 2 corresponds to the instant when it is believed that the creases have been sufficiently smoothed.
- the time interval between t ⁇ and t 2 thus corresponds to an optimal duration of the steam cycle; said duration may be preset in the washing machine during the assembly cycle of the machine itself, or it may be chosen by a user through suitable controls fitted on the machine.
- Said optimal duration tj-t 2 may for example be selected as a function of load, in particular of the type and/or quantity of laundry.
- an alarm signal 2 goes off which preferably lasts until time t 3 ; the alarm may be audible, visual or of any other kind suitable for drawing the user's attention.
- the alarm may be continuous over time, or else goes off at regular time intervals, e.g. every -A-
- Time t 3 is the moment when a machine stop signal is generated.
- Said signal is preferably generated when the user acts upon an appropriate machine stop control. In this case, therefore, the steam cycle will go on until the user stops it.
- the stop signal is generated automatically by the machine control unit when the time interval between t 2 and t 3 exceeds a predetermined value preset during the assembly cycle of the machine itself or included in a program selected by the user.
- the washing or washing/drying machine implementing the method according to the present invention is provided with evaporation means controlled by the machine control unit.
- Said evaporation means may, for example, comprise a steam producing boiler in which water is evaporated and then delivered into the tub.
- steam may be produced by the very same electric resistance that warms up the wash water in the tub, as described in patent application EP 1275767, to which reference is made herein.
- the evaporation means therefore comprise the electric resistance that warms up the water in the tub.
- the corresponding quantity of steam Qi applied to the laundry during this time interval is that which is believed to be most appropriate for the steam cycle.
- a further variant, which is advantageous in that it reduces the time in which no steam is applied to the laundry before the latter is removed by the user, is that of quickly discharging the steam immediately after the user has stopped the steam cycle.
- washing and washing/drying machines are normally fitted with a safety device which will keep the load door of the machine locked if the temperature within the tub is high, e.g. due to the presence of residual steam.
- the washing or washing/drying machine is provided with means for accelerating the discharge of the steam externally; said means may, for example, comprise a fan specially operated for this purpose, or an additional door preferably located on the rear side of the machine, which opens at the end of the steam cycle.
- the dry (or slightly damp) laundry is loaded into the drum of the machine (e.g. a clothes dryer) and subjected to a steam flow generated by the machine through evaporation means such as, for example, a boiler.
- evaporation means such as, for example, a boiler.
- the machine then carries out a predetermined refresh cycle, at the end of which an alarm signal goes off in order to inform the user that the laundry can be removed from the machine.
- a clothes dryer which has no wash tub but only a rotary drum, the treatment is carried out by supplying steam into the drum and to the laundry therein.
- the evaporation means are activated for at least a non-null time interval (t 2 -t 3 ) after the alarm signal has gone off, thus generating additional steam and subjecting the laundry to a further steam flow following the alarm signal.
- the refreshing method may also be subject to the very same variations previously described with reference to the crease smoothing method:
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08806864T PL2281081T3 (en) | 2008-04-30 | 2008-07-31 | Method and device for treating laundry in a washing machine or washing/drying machine or clothes dryer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000327A ITTO20080327A1 (en) | 2008-04-30 | 2008-04-30 | METHOD AND DEVICE FOR SOFTENING FOLDS IN CLOTHES IN A WASHING MACHINE OR WASHING MACHINE |
PCT/IB2008/001987 WO2009133424A1 (en) | 2008-04-30 | 2008-07-31 | Method and device for treating laundry in a washing machine or washing/drying machine or clothes dryer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2281081A1 true EP2281081A1 (en) | 2011-02-09 |
EP2281081B1 EP2281081B1 (en) | 2011-12-14 |
Family
ID=40158198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08806864A Active EP2281081B1 (en) | 2008-04-30 | 2008-07-31 | Method and device for treating laundry in a washing machine or washing/drying machine or clothes dryer |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2281081B1 (en) |
AT (1) | ATE537288T1 (en) |
ES (1) | ES2379166T3 (en) |
IT (1) | ITTO20080327A1 (en) |
PL (1) | PL2281081T3 (en) |
RU (1) | RU2458194C1 (en) |
WO (1) | WO2009133424A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015101892A1 (en) | 2013-12-31 | 2015-07-09 | Indesit Company S.P.A. | Washing/drying machine with cleaning device for a drying air filter |
WO2015101890A1 (en) | 2013-12-31 | 2015-07-09 | Indesit Company S.P.A. | Washing/drying machine with a system for preventing an air filter from getting clogged |
WO2015159173A1 (en) | 2014-04-17 | 2015-10-22 | Indesit Company S.P.A. | Method for cleaning an air filter in a washing/drying machine and machine for its execution |
WO2016108102A1 (en) | 2014-12-30 | 2016-07-07 | Indesit Company S.P.A. | Washing/drying machine with a spider-shaped device for cleaning an air filter |
WO2016108101A1 (en) | 2014-12-30 | 2016-07-07 | Indesit Company S.P.A. | Washing/drying machine with a device for cleaning an air filter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9126200D0 (en) * | 1991-12-10 | 1992-02-12 | Hart Douglas R | Automatic cycle terminator for dryers |
CH695383A5 (en) * | 2001-07-10 | 2006-04-28 | V Zug Ag | Dryer or washing machine with steamer. |
KR100531379B1 (en) * | 2003-08-13 | 2005-11-28 | 엘지전자 주식회사 | Method for smoothing wrinkles of laundry in Drum-type washing machine |
KR20060055222A (en) * | 2004-11-18 | 2006-05-23 | 삼성전자주식회사 | Washing machine and control method thereof |
-
2008
- 2008-04-30 IT IT000327A patent/ITTO20080327A1/en unknown
- 2008-07-31 EP EP08806864A patent/EP2281081B1/en active Active
- 2008-07-31 WO PCT/IB2008/001987 patent/WO2009133424A1/en active Application Filing
- 2008-07-31 AT AT08806864T patent/ATE537288T1/en active
- 2008-07-31 RU RU2010148753/12A patent/RU2458194C1/en not_active IP Right Cessation
- 2008-07-31 ES ES08806864T patent/ES2379166T3/en active Active
- 2008-07-31 PL PL08806864T patent/PL2281081T3/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2009133424A1 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015101892A1 (en) | 2013-12-31 | 2015-07-09 | Indesit Company S.P.A. | Washing/drying machine with cleaning device for a drying air filter |
WO2015101890A1 (en) | 2013-12-31 | 2015-07-09 | Indesit Company S.P.A. | Washing/drying machine with a system for preventing an air filter from getting clogged |
WO2015159173A1 (en) | 2014-04-17 | 2015-10-22 | Indesit Company S.P.A. | Method for cleaning an air filter in a washing/drying machine and machine for its execution |
WO2016108102A1 (en) | 2014-12-30 | 2016-07-07 | Indesit Company S.P.A. | Washing/drying machine with a spider-shaped device for cleaning an air filter |
WO2016108101A1 (en) | 2014-12-30 | 2016-07-07 | Indesit Company S.P.A. | Washing/drying machine with a device for cleaning an air filter |
US10443181B2 (en) | 2014-12-30 | 2019-10-15 | Whirlpool Emea S.P.A. | Washing/drying machine with a spider-shaped device for cleaning an air filter |
Also Published As
Publication number | Publication date |
---|---|
WO2009133424A1 (en) | 2009-11-05 |
RU2458194C1 (en) | 2012-08-10 |
RU2010148753A (en) | 2012-06-10 |
ATE537288T1 (en) | 2011-12-15 |
ES2379166T3 (en) | 2012-04-23 |
ITTO20080327A1 (en) | 2009-11-01 |
EP2281081B1 (en) | 2011-12-14 |
PL2281081T3 (en) | 2012-05-31 |
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