EP2468950A1 - Procédé et machine permettant de sécher le linge - Google Patents
Procédé et machine permettant de sécher le linge Download PDFInfo
- Publication number
- EP2468950A1 EP2468950A1 EP11195381A EP11195381A EP2468950A1 EP 2468950 A1 EP2468950 A1 EP 2468950A1 EP 11195381 A EP11195381 A EP 11195381A EP 11195381 A EP11195381 A EP 11195381A EP 2468950 A1 EP2468950 A1 EP 2468950A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- phase
- laundry
- control system
- moisture
- 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
- 238000001035 drying Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims description 26
- 238000009423 ventilation Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 230000001464 adherent effect Effects 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 description 9
- 230000005494 condensation Effects 0.000 description 9
- 238000009987 spinning Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 241000282836 Camelus dromedarius Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000085 cashmere Anatomy 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000000050 mohair Anatomy 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
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- 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
- D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
-
- 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
-
- 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
- D06F2103/04—Quantity, e.g. weight or variation of weight
-
- 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
-
- 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
- D06F2103/38—Time, e.g. duration
-
- 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
- D06F2105/56—Remaining operation time; Remaining operational cycles
Definitions
- the present invention relates to a process and a machine for drying laundry.
- Laundry-drier machines are typically provided with a cabinet, rotatably housed within which is a drum, designed to contain the laundry to be dried.
- the drum has a perforated cylindrical wall and is rotatably mounted within a tank: this is typically the case of the so-called washer-drier machines, i.e., machines that enable washing and subsequent drying of a load of laundry.
- Drier machines in a strict sense instead, are not normally provided with a tank.
- the drum is constituted by a non-perforated cylindrical wall, associated to which are a front flange and a rear flange, provided with openings for passage of a flow of drying air.
- the drum basically consists of just the cylindrical wall, the open ends of which are rotatably constrained to respective front and rear containment elements, with interposition of suitable sliding seal means.
- the machine has a ventilation system, for generating and conveying a forced flow of air, and heating means, for heating the air of the forced flow.
- the ventilation system typically comprises a ducting, associated to which are a fan and the means for heating the air.
- the heating means comprise at least one electrical resistance, but in recent times - mainly for reasons of energy efficiency - there has been a widespread use of heat pumps.
- the fan forces the air into the drum, via a delivery branch of the ventilation circuit after the air itself has been heated via heating means.
- the hot air traverses the inside of the drum and collects the moisture yielded by the laundry items contained therein, said items being thus progressively dried.
- the moist air exits from the drum through its front wall, which is provided with a central opening, used - in the case of front-loading machines - also for loading and unloading the laundry.
- a filter is provided accessible to the user of the machine, having the function of withholding the fluff released by the garments in the course of the treatment and conveyed by the flow of forced air.
- the front opening of the drum is in fluid communication with the intake branch of the ventilation system, upstream of the fan, along which there is a condenser device designed to extract the moisture from the air taken in from the drum, said dehumidified air being then re-heated and re-introduced into the drum via the delivery branch of the system.
- the corresponding evaporator is directly exploited to bring about condensation of the moisture of the air of the forced flow.
- the water resulting from condensation is collected in a suitable container, from which, via a pump, it is brought into a container accessible by the user, for corresponding manual emptying.
- the drying programs that can be executed on known machines have a duration roughly comprised between 60 and 210 minutes.
- the temperature of the air is in general comprised between 55°C and 65°C, whilst the normal speed of rotation of the drum is in general between 30 and 60 r.p.m..
- a drying program typically comprises at least one drying step, in the course of which the drum is set in rotation in the presence of the flow of heated air. In the course of the aforesaid step, there may be envisaged substeps, which include pauses in rotation of the drum, reversal of the direction of rotation, short variations of the speed of rotation of the drum.
- the end of the drying step is determined by reaching of a certain predetermined condition associated to the program itself, detected by the control system of the machine.
- Said predetermined condition is typically represented by reaching of a predetermined program time, or of a temperature of the drying air or of a certain rate of humidity of the air or moisture of the load of laundry. Passage of the predetermined program time can be measured by the control unit of the machine, typically provided with an internal clock of its own, whilst the temperature and/or humidity can be detected via suitable sensor means belonging to the control system. Consequently, once the predetermined condition is reached, the drying step is brought to an end.
- the programs for drying laundry typically comprise also a final cooling step, which follows the drying step.
- the drum In the course of said final step the drum is made to turn at the normal speed, with the means for heating the air inactive and the ventilation means active.
- This final cooling step is carried out mainly because, below a threshold of absolute humidity, it becomes more advantageous to work by reducing the temperature in order to have a higher relative humidity and favour condensation.
- the cooling step hence enables, at the end of the treatment cycle, a desired degree of moisture for the garments treated, it being possible for said degree of moisture to be predetermined by the program or set by the user.
- the step of cooling is useful also in order to reduce the temperature of the garments in view of them being taken out of the drum, for the cases in which it is desired for said removal to be carried out immediately after the end of the program.
- the substeps of gentle spinning are interspersed with short substeps of fast rotation of the drum and with substeps of arrest of rotation and/or of rotation at low speed (20-40 r.p.m.);
- the aforesaid fast rotation implies drum speeds of between 250 and 600 r.p.m., which are hence higher than the normal drying speed (30-60 r.p.m.) and than the satellization speed (approximately 80-240 r.p.m.).
- the substeps of gentle spinning have a relatively short duration: consider, in this regard, that execution of the sequence of a substep of fast rotation, a substep of gentle spinning, and a substep of pause of rotation and/or of rotation at low speed implies a total time of agitation of the laundry of between 20 and 200 seconds. For this reason, in the course of the drying step, a plurality of said sequences is to be envisaged.
- the object of the present invention is mainly to solve, in a simple and inexpensive way, the aforesaid drawback. Said object is achieved, according to the present invention, by a process and a machine for drying laundry having the characteristics specified in the annexed claims.
- the claims form an integral part of the technical teaching provided herein in relation to the invention.
- references to "an embodiment” or “one embodiment” in the context of the present description is intended to indicate that a particular configuration, structure, or characteristic described in relation to the embodiment is comprised in at least one embodiment.
- phrases such as “in an embodiment” or “in one embodiment” and the like, that may be present in various points of the present description do not necessarily all refer to one and the same embodiment.
- the particular configurations, structures, or characteristics can be combined in any adequate way in one or more embodiments.
- the references used in what follows are merely provided for convenience and do not define the sphere of protection or the scope of the embodiments.
- a laundry-drier machine designated as a whole by 1 is a laundry-drier machine according to the present invention.
- the machine 1 is a drier machine, namely, a machine designed to perform only drying functions, of the condensation type.
- the machine 1 has a load-bearing structure or cabinet 2, rotatably mounted within which is a drum 3, designed for containing the laundry.
- the drum 3 has a generally cylindrical shape and is mounted for rotating about a substantially horizontal axis of rotation.
- means, of a type in itself known, for rotatably supporting the drum 3, which can, for example, be of a rolling type, such as wheels or rollers, or of a sliding type, such as runners.
- the cabinet 2 has a front face, comprising a front wall 2a, having an opening - not indicated - on which a door 4 is mounted for enabling access to the inside of the drum 3.
- a control panel or user interface of the machine is provided, designated as a whole by 5.
- the panel 5 forms part of a control system of the machine, which includes a control unit 6, preferably of an electronic microcontroller type, pre-arranged for controlling execution of a plurality of operating programs of the machine.
- the panel 5 can comprise at least one ON/OFF button, means for selection and start of one from a plurality of operating programs, means for selection of parameters of the operating programs that can be set by the user, and, preferably, display means.
- the aforesaid selection and starting means comprise, for example, a rotary selector with a number of positions and a program start button, but for the purpose other means of a type in itself known in the sector can obviously be used.
- the means for the selection of optional program parameters can include a selector and/or keys.
- the display means can comprise a display or warning lights.
- the machine 1 comprises ventilation means, designed for generating a forced flow of air, and heating means, designed for heating the air of the forced flow, and motor means designed to bring about rotation of the drum 3 in a range of speeds, for example comprised between 0 r.p.m. and approximately 250 r.p.m., preferably between 0 and approximately 150 r.p.m.
- the ventilation means include a substantially closed path for the air (not indicated), defined in a known way within the cabinet 2, and possibly comprising a hollow part of the door 4.
- the aforesaid path substantially extends between an opening of the front wall of the drum 3 and at least one opening of the rear wall of the drum 3.
- the white arrows (one of which is designated by F) indicate the forced flow along the aforesaid path and through the drum 3.
- the ventilation means further comprise a fan 7 that is operative along the aforesaid path and that can be driven, at a controllable speed, by the same motor 8 that is to bring about rotation of the drum 3, with the aid of a suitable transmission, here represented by a belt 8a.
- the fan 7 is provided with a motor of its own.
- a filter 9 is provided of conception and operation in themselves known, which can be inspected by the user of the machine 1 and is designed to retain the fluff released into the forced flow F by the garments being treated.
- the means for heating the air include a heat pump 10, which operates along the path for the air and comprises a first heat exchanger 11, a second heat exchanger 12, and a compressor 13, which is operatively set between the two heat exchangers 11 and 12.
- the heat pump 10 can possibly include a respective filter for the air, not illustrated, accessible by the user.
- the heat pump 10 can be replaced by one or more traditional electrical resistances, for example positioned in the ventilation circuit downstream of the fan 7 and upstream of the drum 3.
- a known device for condensation of the air in the case of condensation drier machine, in the ventilation circuit, preferably upstream of the fan, a known device for condensation of the air will be provided (for example, substantially in the position occupied in Figure 1 by the heat pump 10).
- a tray for collecting the water produced by condensation of the moisture present in the air of the forced flow F at output from the drum 3.
- a pump 14a which, via a duct 15, takes the condensation water from the tray 14 to a removable container 16, positioned in the top part of the machine 1.
- an overflow duct to the container 16 there can be associated an overflow duct, not represented, in communication with the tray 14 itself.
- the drying programs that can be selected via the selection means of the user interface 5 comprise treatment programs that terminate when at least one condition arises, which can be detected by the control system of the machine.
- the condition or conditions that determine the end of one of said programs can comprise program time and/or temperature of the air of the forced flow and/or rate of moisture of the items of laundry.
- the rate of moisture of the load of laundry can be measured, for example, according to the criteria taught by the Italian norm CEI EN 61121 Ed.2 2007-10, according to which the value of moisture of the load identifies the amount of water contained in weight percentage of the dry load, according to the formula:
- the control logic of the machine 1 detects, in the course execution of a drying program, via sensor means described hereinafter, data representing a value of moisture and compares them with reference data contained in the control logic.
- the aforesaid reference data which also represent values of moisture, are obtained following upon experimental characterization tests, conducted in standardized conditions in order to associate said reference data to a rate of moisture.
- the aforesaid reference data can be organized in the control logic with modalities in themselves known in the sector, for example, in tabular form or using fuzzy-logic techniques.
- Expiry of the program time can be easily measured by the control unit 6, the microcontroller of which is equipped with an internal clock of its own, whilst the temperature of the air and the moisture of the garments can be detected by the unit 6 via purposely provided sensor means, of a type in itself known.
- the temperature of the air is detected via a sensor 25 (for example, of an NTC type) positioned in the ventilation circuit immediately downstream of the drum 3, whilst the moisture of the items of laundry is detected by means of a sensor 26 (for example, a conductivity sensor), which operates directly inside the drum, so as to come into contact with the load.
- the user can set the garment or garments to be dried in the drum 3 and close the door 4.
- the user can select the treatment program and the possible settable options associated thereto (for example, a value of residual moisture desired for the load at the end of the treatment cycle) and then start execution of the program itself.
- the control unit 6 thus governs start of the drying step, in the course of which the motor 8, the fan 7, and the heat pump 10 are activated.
- the program proceeds with modalities in themselves known: for example, the motor 8 is controlled so as to produce a rotation of the drum at a first speed of between 30 and 60 r.p.m.
- This part of the drying step may possibly comprise pauses in the rotation of the drum, or substeps of slower rotation of the drum, or reversal of rotation of the drum, according to techniques in themselves known.
- the load of the drum 3 is then progressively dried and de-humidified.
- the control unit 6 monitors not only the temperature of the air of the forced flow F, by means of the sensor 25, but also the moisture of the load, by means of the sensor 26.
- the drying step comprises at least one substep during which the drum 3 is brought to assume a second speed of rotation, higher than the first speed.
- the increase in speed is governed by the control unit 6, which controls in an appropriate way the adjustable-speed motor 8.
- the aforesaid second speed is in particular equal to or higher than the minimum speed that enables the laundry to be kept adherent to the walls of the drum 3.
- the second speed is comprised between 80 and 240 r.p.m., since the diameter of the drum ranges between 45 and 65 cm.
- the second speed is comprised between approximately 80 and approximately 120 r.p.m..
- the aforesaid substep at the second speed - hereinafter referred to as "satellization substep" - is started by the control unit 6 when the latter detects, by means of the sensor 26, that the value of moisture of the load of laundry is equal to or lower than a first predetermined moisture threshold (as has been said, the sensor 26 detects data representing the value of moisture).
- the control system 6 contains information representing the threshold value; i.e., said value is stored in the control unit or is obtained by the control unit on the basis of data or algorithms stored therein.
- the aforesaid threshold value represents a value of moisture of the load preferably comprised between approximately 5% and 15%, even more preferably between approximately 8% and 10%.
- the ventilation means 7 and heating means 10 are kept active.
- the invention is based upon the perception of the fact that the release of fluff by the garments being treated, into the forced flow of air, starts or is higher precisely when the moisture of the garments being treated is relatively low, or drops below of a certain level, as has been said roughly comprised between 5% and 15%.
- the moisture of the garments acts as a "cushion" and protects the garment from the action of rubbing against the peripheral wall of the drum, which generates release of fluff.
- the moisture of the garments is reduced, thus rendering progressively less effective this protective effect of the garment in regard to release of fluff.
- the satellization substep hence envisages a second speed of rotation equal to or slightly higher than the minimum speed that enables the laundry to be kept adherent to the walls of the drum 3, so as to minimize the stresses on the garments, preventing damage and wear thereof: the garments are safeguarded, given that rubbing thereof on the drum is prevented in a period in which, since the garments are almost dry, they are more subject to getting wear and generation of fluff.
- the satellization substep has a relatively long duration, as compared with the similar substeps envisaged in EP 0 404 047 , and in any case preferably not shorter than approximately 5 minutes.
- the satellization substep proceeds, with the drum 3 kept in rotation at the aforesaid second speed, up to the end of the drying step.
- the end of the satellization substep coincides with the end of the drying step.
- the drying step proceeds beyond the satellization substep, for example, with a substep in which the drum is brought back to the first speed.
- the drying step terminates when a condition is reached that can be detected by the control system of the machine 1.
- the aforesaid condition comprises reaching of a value of moisture of the load of laundry that is equal to or lower than a second predetermined threshold, which is lower than the first threshold. Consequently, when the control unit 6 detects, via the sensor 26, to the moisture of the load has dropped below the aforesaid second threshold, the drying step (or the satellization substep) terminates.
- the control system 6 contains information representing the value of the second threshold; i.e., said value is stored in the control unit or is obtained by the control unit on the basis of data or algorithms stored therein.
- the value of the second threshold is determined by the user in an indirect way, following upon selection, using the user-interface means 5, of a parameter corresponding to the desired value of moisture of the load at the end of the program (i.e., at the end of the treatment cycle).
- the second threshold may, however, be predetermined.
- the value of the second threshold preferably represents a value of moisture of the load roughly comprised between approximately -3% and approximately 12%.
- the condition that causes the end of the drying step, or of the satellization substep is expiry of a given period of time.
- Said period of time can be measured by the control unit 6 and can be, for example, measured starting from start of the drying program or from start of the satellization substep.
- the aforesaid period of time may be variable, in particular determined as a function of the weight of the load of laundry.
- the machine 1 is provided with means for detecting or estimating the load of laundry, of a conception in itself known.
- the weight of the load of laundry is estimated according to the temperature of the air of the forced flow F leaving the drum 3, which can be detected via the sensor 25.
- the control unit 6 monitors the variation in time of the temperature of the air of the forced flow F, during an initial period of the drying step, by means of algorithms based upon the criterion whereby the higher the load, the lower the temperature gradient.
- the control unit 6 de-activates the heat pump 10, and possibly de-activates also the fan 7 and the motor 8, for example when to the end of the drying step there corresponds the end of the treatment program.
- operation of just the heat pump 10 can be interrupted, keeping, instead, active the fan 7 and the motor 8, with the latter for example brought back to the first speed (30-60 r.p.m.).
- a pause, or a step of slow rotation of the drum 3 may be envisaged.
- start of a satellization substep is preferably independent of the moisture of the garments and can be started either at the start of the cooling step itself or else after a pre-determined time following starting thereof.
- the process and machine according to the invention afford extremely satisfactory drying results, with a production of fluff by the garments that is reduced as compared to known solutions.
- the air filter or filters envisaged in the ventilation circuit hence more get clogged slowly, to the advantage of the user and of the efficiency of the treatment cycle. The need for maintenance and cleaning of the filters is reduced.
- the solution according to the invention hence enables a greater care for the garments being treated, reducing rubbing thereof on the drum.
- the solution according to the invention is advantageous for multiple types of fabric, whether these be fabrics that are relatively far from delicate, such as cotton or towelling, or delicate fabrics, such as wool and the like.
- the drying methodology proposed is particularly advantageous also for dark-coloured garments, for which the production of fluff is associated to loss of colour.
- the drying step envisages a continuous satellization substep, i.e., with the drum kept at the second speed up to the end of the substep.
- the substep can be divided into at least two parts, interspersed by reversal of the direction of rotation and/or short pauses of rotation and/or short periods of rotation of the drum at speeds different from the second speed (for example at the first speed or at even slower speeds), where by "short period” is meant a time roughly of between 5 and 15 seconds.
- the invention may, of course, be applied also to machines for washing and drying laundry, by introducing arrangements that are evident for the person skilled in the art, taking into account that in this case the laundry drum turns inside a tank.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Drying Of Solid Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT001070A ITTO20101070A1 (it) | 2010-12-27 | 2010-12-27 | Procedimento e macchina per l'asciugatura di biancheria |
Publications (2)
Publication Number | Publication Date |
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EP2468950A1 true EP2468950A1 (fr) | 2012-06-27 |
EP2468950B1 EP2468950B1 (fr) | 2016-04-27 |
Family
ID=43737458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11195381.6A Active EP2468950B1 (fr) | 2010-12-27 | 2011-12-22 | Procédé et machine permettant de sécher le linge |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2468950B1 (fr) |
IT (1) | ITTO20101070A1 (fr) |
PL (1) | PL2468950T3 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2770102A1 (fr) | 2013-02-25 | 2014-08-27 | Fagor, S. Coop. | Procédé de séchage de linge contenu dans un sèche-linge et sèche-linge mettant en 'uvre ledit procédé |
US20140277751A1 (en) * | 2013-03-15 | 2014-09-18 | Whirlpool Corporation | Methods and compositions for treating laundry items |
EP2789728A1 (fr) | 2013-04-08 | 2014-10-15 | Electrolux Appliances Aktiebolag | Procédé pour commander le moteur d'un sèche-linge |
ITTO20130586A1 (it) * | 2013-07-12 | 2015-01-13 | Indesit Co Spa | Metodo di controllo di un¿apparecchiatura domestica atta ad eseguire almeno un ciclo di asciugatura di biancheria, ed apparecchiatura domestica operante secondo detto metodo di controllo |
ITPR20130100A1 (it) * | 2013-12-04 | 2015-06-05 | Indesit Co Spa | Metodo di asciugatura di panni. |
US9702074B2 (en) | 2013-03-15 | 2017-07-11 | Whirlpool Corporation | Methods and compositions for treating laundry items |
CN107675429A (zh) * | 2017-10-31 | 2018-02-09 | 青岛海尔洗衣机有限公司 | 一种羊绒织物的洗涤方法及全自动洗衣机 |
Citations (8)
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CH659841A5 (en) * | 1982-07-26 | 1987-02-27 | V Zug Ag | Process for the drying of ready-made clothing laundry in a drum-type dryer |
EP0404047A1 (fr) | 1989-06-23 | 1990-12-27 | Vota, Roberto | Procédé et machine pour laver et sécher des articles textiles |
EP0684335A1 (fr) * | 1994-05-26 | 1995-11-29 | Merloni Elettrodomestici S.p.A. | Procédé et machine pour sécher le linge |
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EP1577433A2 (fr) * | 2004-02-17 | 2005-09-21 | LG Electronics Inc. | Dispositif d'alimentation d'air chaud pour séchage du linge dans une machine à laver à tambour et procédé de commande associé |
EP2014822A1 (fr) * | 2007-07-13 | 2009-01-14 | Electrolux Home Products Corporation N.V. | Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine |
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DE1924961A1 (de) * | 1969-05-13 | 1970-11-26 | Siemens Elektrogeraete Gmbh | Verfahren zum Trocknen von empfindlichen Gewebearten |
DE3017109A1 (de) * | 1980-05-03 | 1981-11-05 | Miele & Cie GmbH & Co, 4830 Gütersloh | Verfahren zur durchfuehrung des trocknungsprogramms in einer trommelwasch- und trockenmaschine |
CH659841A5 (en) * | 1982-07-26 | 1987-02-27 | V Zug Ag | Process for the drying of ready-made clothing laundry in a drum-type dryer |
EP0404047A1 (fr) | 1989-06-23 | 1990-12-27 | Vota, Roberto | Procédé et machine pour laver et sécher des articles textiles |
EP0684335A1 (fr) * | 1994-05-26 | 1995-11-29 | Merloni Elettrodomestici S.p.A. | Procédé et machine pour sécher le linge |
US20050044639A1 (en) * | 2003-08-26 | 2005-03-03 | Kwang Soo Kim | Method of controlling drying cycle in washing machine |
EP1577433A2 (fr) * | 2004-02-17 | 2005-09-21 | LG Electronics Inc. | Dispositif d'alimentation d'air chaud pour séchage du linge dans une machine à laver à tambour et procédé de commande associé |
EP2014822A1 (fr) * | 2007-07-13 | 2009-01-14 | Electrolux Home Products Corporation N.V. | Procédé de contrôle pour contrôler un sèche-linge par culbutage pour sécher le lavage de laine |
Cited By (19)
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EP2770102A1 (fr) | 2013-02-25 | 2014-08-27 | Fagor, S. Coop. | Procédé de séchage de linge contenu dans un sèche-linge et sèche-linge mettant en 'uvre ledit procédé |
US9758914B2 (en) | 2013-03-15 | 2017-09-12 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US10011935B2 (en) | 2013-03-15 | 2018-07-03 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US9689101B2 (en) | 2013-03-15 | 2017-06-27 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US9702074B2 (en) | 2013-03-15 | 2017-07-11 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US10266981B2 (en) | 2013-03-15 | 2019-04-23 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US9631310B2 (en) | 2013-03-15 | 2017-04-25 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US9644301B2 (en) | 2013-03-15 | 2017-05-09 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US10072373B2 (en) * | 2013-03-15 | 2018-09-11 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US10017893B2 (en) | 2013-03-15 | 2018-07-10 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US20140277751A1 (en) * | 2013-03-15 | 2014-09-18 | Whirlpool Corporation | Methods and compositions for treating laundry items |
US9677218B2 (en) | 2013-04-08 | 2017-06-13 | Electrolux Appliances Aktiebolag | Method for controlling a motor of a laundry dryer |
EP2789728A1 (fr) | 2013-04-08 | 2014-10-15 | Electrolux Appliances Aktiebolag | Procédé pour commander le moteur d'un sèche-linge |
ITTO20130586A1 (it) * | 2013-07-12 | 2015-01-13 | Indesit Co Spa | Metodo di controllo di un¿apparecchiatura domestica atta ad eseguire almeno un ciclo di asciugatura di biancheria, ed apparecchiatura domestica operante secondo detto metodo di controllo |
WO2015004611A1 (fr) * | 2013-07-12 | 2015-01-15 | Indesit Company S.P.A. | Procédé de commande d'un appareil électroménager adapté à effectuer au moins un cycle de séchage de linge, et appareil électroménager fonctionnant selon ledit procédé de commande |
WO2015083062A1 (fr) * | 2013-12-04 | 2015-06-11 | Indesit Company S.P.A. | Procédé de séchage de linge |
ITPR20130100A1 (it) * | 2013-12-04 | 2015-06-05 | Indesit Co Spa | Metodo di asciugatura di panni. |
CN107675429A (zh) * | 2017-10-31 | 2018-02-09 | 青岛海尔洗衣机有限公司 | 一种羊绒织物的洗涤方法及全自动洗衣机 |
CN107675429B (zh) * | 2017-10-31 | 2022-07-08 | 天津海尔洗涤电器有限公司 | 一种羊绒织物的洗涤方法及全自动洗衣机 |
Also Published As
Publication number | Publication date |
---|---|
ITTO20101070A1 (it) | 2012-06-28 |
EP2468950B1 (fr) | 2016-04-27 |
PL2468950T3 (pl) | 2016-10-31 |
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