EP1870506B1 - Procédé de défroissage du linge dans une machine à sécher le linge - Google Patents

Procédé de défroissage du linge dans une machine à sécher le linge Download PDF

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Publication number
EP1870506B1
EP1870506B1 EP07110718A EP07110718A EP1870506B1 EP 1870506 B1 EP1870506 B1 EP 1870506B1 EP 07110718 A EP07110718 A EP 07110718A EP 07110718 A EP07110718 A EP 07110718A EP 1870506 B1 EP1870506 B1 EP 1870506B1
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EP
European Patent Office
Prior art keywords
drum
laundry
steam
phase
condenser
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.)
Active
Application number
EP07110718A
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German (de)
English (en)
French (fr)
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EP1870506A1 (fr
Inventor
Carène Tissot
Hervé Pont
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.)
FagorBrandt SAS
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FagorBrandt SAS
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Publication date
Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Priority to EP09178698.8A priority Critical patent/EP2163674B1/fr
Publication of EP1870506A1 publication Critical patent/EP1870506A1/fr
Application granted granted Critical
Publication of EP1870506B1 publication Critical patent/EP1870506B1/fr
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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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/203—Laundry conditioning arrangements
    • 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
    • D06F73/00—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam 
    • D06F73/02—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam  having one or more treatment chambers

Definitions

  • the present invention relates on the one hand to a dryer machine.
  • It also relates to a method for straightening the laundry in a machine for drying laundry so as to limit the formation of folds on the laundry during drying, and secondly, a machine adapted to implement the method of unwinding the laundry according to the invention.
  • the invention relates to machines for drying clothes, and more particularly machines for domestic use.
  • washing machines have the disadvantage of not having a means of heating the air. Therefore, the steam is introduced into a cold structure and immediately condenses on the walls of the structure. These laundry machines do not allow the laundry to be de-wrinkled effectively and the laundry is wetted by condensed steam on the walls of the drum.
  • this method of removing wrinkles clothing has the disadvantage of evacuating a cloud of steam at the opening of the access door of the machine during the removal of clothing contained in the drum.
  • this cloud of steam at the opening of the access door of the machine can cause a risk of burns of the hands of the user when removing clothing contained in the drum.
  • the present invention aims to solve the aforementioned drawbacks and to provide a method of degreasing the laundry in a dryer machine to reduce the creasing of laundry.
  • the present invention is directed to a method for straightening laundry in a laundry drying machine comprising a steam generator, a condenser and a drum housed inside a body, said drum containing the laundry to be stripped, said drum being connected to said condenser by a pipe, said condenser being connected to at least one fan by a pipe, and said at least one fan being connected to said drum by a pipe.
  • the preheating of the structure by the circulation of hot air makes it possible to limit the condensation of steam on the metal and / or cold parts of the dryer.
  • the second preheating phase avoids the degradation of said at least one heating element.
  • said at least one heating element is unshielded so as to reduce the cost of manufacturing a machine for drying laundry.
  • the laundry introduced into the dryer may be dry or wet.
  • a conventional drying cycle is carried out before the laundry unwinding cycle.
  • said at least one heating element is used at half of its power during the second preheating phase of the drum.
  • the half-power preheating of said at least one heating element makes it possible to save energy and to limit the power of the machine to dry the laundry.
  • said at least one heating element limits the temperature inside the drum for better preservation of laundry. In this way, overheating is not caused on the surface of the laundry placed inside the drum.
  • the drum is rotated to stir the laundry and homogenize the introduction of steam into said drum during the third phase of steam generation and circulation of steam from the steam generator to said drum, hence the circulation of steam in the closed circuit of hot air of a condensing dryer.
  • the steam is introduced and put into circulation in a hot air circuit of the dryer in the third stage of steam generation and circulation of steam from the steam generator to the drum.
  • the introduction of steam is regulated by the on and off times of the steam generator.
  • the stopping time of the steam generator is present to stabilize the temperature of said steam generator by cooling it with water drip into it.
  • the water introduced dropwise is at ambient temperature and cools the steam generator being hot. During water supply stopping times in the steam generator, the latter heats up. Stopping water introduction times are necessary to cause the temperature rise of the steam generator. If these water supply stoppages are not provided, the steam generator evacuates droplets of water in the hot air circuit.
  • the water is not introduced in liquid form into the hot air circuit of the dryer but only in vapor form.
  • the condenser operates at its maximum efficiency during the fourth phase of evacuation of the steam drum and cooling of the laundry contained in said drum.
  • This fourth phase of the laundry stripping process makes it possible to remove the laundry from the drum of the dryer machine without evacuating a cloud of steam when opening the access door of said machine.
  • the fourth phase of the method avoids the user to burn his hands by removing the laundry drum.
  • the present invention also aims according to a second aspect to provide a dryer machine comprising a steam generator with a water supply by drip.
  • This dryer may be a household clothes dryer or a washer-dryer.
  • an overhead loading machine has been illustrated.
  • the present invention applies to all types of machine for drying clothes, including front loading.
  • This dryer 1 comprises a bodywork comprising an access opening inside the bodywork.
  • this access opening is made in an upper portion of the body, and in this example, in an upper plane of the body.
  • An access door is adapted to close this opening of the body of the machine 1, in particular during operation thereof.
  • the access door is pivotally mounted about an axis of rotation integral with the bodywork of the machine 1.
  • the body of the machine 1 is adapted to accommodate a drum 2 which is particularly suitable for drying laundry by a hot air circulation.
  • the drum 2 is rotatable about an axis 3 during the different phases of the drying cycles of the machine.
  • This access door for example formed of two gates and pivotally mounted on the shell of the drum 2, allows to close an opening in said shell of said drum 2.
  • a control panel is also provided in the upper part of the machine 1.
  • the dryer according to the invention comprises all the equipment and means necessary for the implementation of a conventional drying process in such a rotary drum machine.
  • the laundry dryer 1 comprises a steam generator 12 with a water supply by drip.
  • the steam generator 12 is a tube steam generator with a low water flow rate.
  • the diameter of the tube of the steam generator 12 is of the order of 8 mm.
  • a condenser dryer 1 comprises two air circuits.
  • a first air circuit is commonly called hot air circuit 4 and a second air circuit called cold air circuit 5.
  • the hot air circuit 4 is in a closed loop and the air heated by at least one heating element 6.
  • the heated air passes through the laundry contained in the drum 2 and the heated air is charged with the moisture contained by the laundry. During this phase, the air is cooled from a temperature of about 110 ° C to a temperature of about 70 ° C.
  • the heated and moist air passes through a filter 7 placed at a discharge outlet of the drum 2 to recover the lint contained in said heated and moist air.
  • a fan 8 circulates the hot and humid air inside a condenser 9. The hot and humid air is cooled in the tubes of the condenser 9 and the humidity of the air is condensed. The condenser 9 is cooled by heat exchange with ambient air. Then, the air is again heated by the at least one heating element 6.
  • the laundry dryer 1 may also be provided with a plate condenser 9 in place of a condenser 9 with tubes.
  • the cold air circuit 5 is in an open circuit where ambient air is sucked by a fan 10 at the rear of the dryer 1.
  • the fan 10 propels the ambient air into the condenser 9 on the floor. outside the tubes of said condenser 9 in order to cool it.
  • the ambient air heated in the condenser 9 is discharged into a room through a front face of the dryer 1.
  • a motor 11 allows the driving of the drum 2 for brewing the laundry with an alternating rotation to prevent the knotting of the laundry. Said motor 11 can also drive the two fans 8 and 10.
  • Both fans 8 and 10 are centrifugal technology.
  • the air flow is greater in a positive direction relative to a reverse direction said negative.
  • the air flow factor between the positive direction and the negative direction of the fans 8 and 10 is substantially of the order of 3.
  • the water recovered by the condenser 9 can be raised by a pump to a tank placed in the upper part of the machine 1, or recovered by gravity in a tray at the bottom of the machine 1 according to said dryer machine 1 .
  • the dryer 1 is also equipped with a steam generator 12 supplied with water by a pump from a tank. During the implementation of a laundry cycle, the steam produced by the steam generator 12 is injected into the hot air circuit 4 to moisten the laundry in order to straighten it.
  • the tank of the steam generator 12 can be filled by the user with mains water or demineralised water.
  • the laundry cycle unwinds with a rotation of the drum 2 alternating to avoid the knotting of the laundry.
  • the rotation of the drum 2 containing the laundry to be straightened makes it possible to stir the laundry and to create an exchange between the moist air and the steam and with the laundry.
  • the load of laundry introduced into the drum 2 of the dryer 1 is mainly dried and creased at the start of the laundry cycle.
  • the method of straightening the laundry in a dryer 1 comprises a steam generator 12, a condenser 9 and a drum 2 housed inside a body.
  • Said drum 2 contains the laundry to be straightened and is connected to said condenser 9 by a pipe 13.
  • Said condenser 9 is connected to at least one fan 8 by a pipe 14.
  • said at least one fan 8 is connected to said drum 2 by a pipe 15.
  • the filling of the tank of the steam generator 12 can be filled at any time with the method of unwinding the laundry according to the invention. This filling is possible thanks to the steam generator 12 supplied with water drip through an inlet opening.
  • the steam generator 12 may be a closed heating tank at its lower part.
  • the steam generator 12 includes an outlet opening for directing the generated steam to the hot air circuit 4 of the dryer 1.
  • the first phase of the laundry stripping process involves heating the steam generator 12 so that the water introduced into it falls on a heated surface and the water is vaporized instantly.
  • the structure of said machine, in particular the drum 2 must be sufficiently hot to prevent condensation of the steam on the machine.
  • Said at least one heating element 6 could be degraded by the presence of water. In particular in the case where said at least one heating element 6 is unshielded.
  • Said at least one heating element 6 is used at half of its power during the second preheating phase of the drum 2.
  • said at least one heating element 6 is used on a single part and in particular that placed in the upstream part in the hot air circuit 4.
  • the use of the upstream part of said at least one heating element 6 makes it possible to avoid the condensation on all of said at least one heating element 6.
  • the upstream portion of said at least one heating element 6 corresponds to the first lower half of said minus one heating element 6 illustrated in the figure 1 .
  • the use of the half power of said at least one heating element 6 saves energy and limits the power of the machine 1.
  • said at least one heating element limits the temperature inside the drum for better preservation of laundry. In this way, overheating is not caused on the surface of the laundry placed inside the drum.
  • the drum 2 is rotated to stir the laundry and homogenize the introduction of steam into said drum 2 during the third steam generation and steam circulation phase of the steam generator 12 to said drum 2.
  • the hot air circuit 4 makes it possible to minimize steam condensation in order to optimize the consumption of water and the supply of thermal energy.
  • the hot air circuit 4 makes it possible to condense as little steam as possible, coming from the drum 2, in order to consume a minimum quantity of water and to limit the supply of thermal energy, and to reduce the noise of the machine to drying the laundry 1 of the order of 2dB.
  • the means used to reduce the efficiency of the condenser 9 is to reduce the flow of ambient air to limit the heat exchange.
  • the efficiency of the condenser 9 with a fan 10 of the cold air circuit 5 rotating in the positive direction is of the order of 70%.
  • the power exchanged in the condenser 9 is of the order of 2000W.
  • the change of direction of rotation of the drum 2 also makes it possible to modify the direction of rotation of the fan 10 and thus to modify the flow of ambient air passing through the condenser 9.
  • a lower air flow generated by the fan 10 creates an exchange less heat between moist warm air and ambient air.
  • the efficiency of the condenser 9 is of the order of 30%.
  • the power exchanged in the condenser 9 is of the order of 800W.
  • the fan 8 of the hot air circuit 4 is also driven by the motor 11 and said fan 8 also rotating in the opposite direction.
  • the hot air circuit 4 has a lower air flow.
  • the power of said at least one heating element 6 is lower to obtain a temperature at the outlet of the pipe 15 substantially identical.
  • a lower hot air flow rate also makes it possible to limit the risk of entrainment of water droplets that can be discharged with the steam in the hot air circuit 4 and consequently to limit the risk of short circuiting of said at least one a heating element 6.
  • the steam generation can be interrupted during the rotation of the drum 2 in said positive direction.
  • the cooling by the condenser 9 is also less important, hence a minimized heat exchange.
  • the steam is introduced and put into circulation in a hot air circuit 4 of the dryer 1 during the third steam generation and steam circulation phase of the steam generator 12 to the drum 2.
  • the introduction of steam is regulated by the on and off times of the steam generator 12.
  • the stopping time of the steam generator 12 is present to stabilize the temperature of said steam generator 12 by cooling it with water drip into it.
  • the water introduced dropwise is at ambient temperature and cools the steam generator being hot. During water supply stopping times in the steam generator, the latter heats up. Stopping water introduction times are necessary to cause the temperature rise of the steam generator. If these water supply stoppages are not provided, the steam generator discharges water droplets into the hot air circuit.
  • the water is not introduced in liquid form into the hot air circuit 4 of the dryer 1 but only in vapor form.
  • the condenser 9 operates at its maximum efficiency during the fourth phase of evacuation of the steam from the drum 2 and cooling the laundry contained in said drum 2.
  • the fans 8 and 10 operate in the positive direction.
  • This fourth phase of the laundry degreasing process makes it possible to remove the laundry from the drum 2 of the dryer 1 without the evacuation of a cloud of steam when the access door of said machine 1 is opened.
  • the fourth phase of the method avoids the user to burn his hands by removing the laundry drum 2.
  • the first phase of the laundry degreasing process has a duration of the order of 2 minutes to 3 minutes.
  • the duration of the first phase of the laundry degreasing process is dependent on the type of steam generator and its power.
  • the second phase of preheating the drum 2 with at least one heating element 6 and a circulation of hot air generated by said at least one fan 8 has a duration of the order of 3 minutes.
  • the first phase and the second phase can be performed simultaneously.
  • the second phase of the laundry degreasing process is approximately one minute longer than said first phase.
  • the third phase of steam generation and steam circulation of the steam generator 12 to the drum 2 has a duration of the order of 10 minutes.
  • the fourth phase of evacuating the steam from the drum 2 and cooling the laundry contained in said drum 2 has a duration of the order of two minutes.
  • the amount of water injected at each cycle of stripping the laundry in the steam generator 12 is of the order of 200mL to 300mL.
  • the method of straightening laundry in a condensing dryer 1 comprises a steam generator 12, a condenser 9 and a drum 2 housed inside a body.
  • Said drum 2 contains the laundry to be stripped and is connected to said condenser 9 by a pipe 13.
  • Said condenser 9 is connected to at least two fans 8 and 10 each by a pipe 14 and 16.
  • said at least one fan 8 is connected to said drum 2 by a pipe 15.
  • This brewing phase of the laundry makes it possible to limit the cooling of the condenser 9 and consequently the condensation of the steam.
  • the consumption of water and energy is optimized during the implementation of a laundry cycle by steam steaming.
  • the duration of the anti-crease cycle is also optimized.
  • Said at least one fan 10 operates periodically and predominantly in the opposite direction of rotation with respect to the operating rotation direction having a maximum flow rate during the brewing phase of the laundry to obtain the minimum efficiency of the condenser 9.
  • the efficiency of the condenser 9 is minimum to prevent condensation of the steam as it passes through said condenser 9.
  • the operating time ratio of said at least one fan 10 in the direction of rotation having a maximum flow rate relative to the reverse direction of rotation is between 1/5 th and 1/15 th , and preferably of the order of 1 / 10 th .
  • Said at least one heating element 6 operates at half of its power during the brewing phase of the laundry, and preferably at a power of the order of 1000W.
  • Said at least one heating element 6 is located in a pipe 15 connecting said at least one fan 8 and the drum 2.
  • said at least one heating element 6 is used on a single part and in particular that placed in the upstream part in the hot air circuit 4.
  • the use of the upstream part of said at least one heating element 6 makes it possible to avoid condensation of all of said at least one heating element 6.
  • the upstream portion of said at least one heating element 6 corresponds to the first lower half of said at least one heating element 6 illustrated in FIG. figure 1 .
  • the steam generator 12 is introduced into the pipe 15 connecting the at least one fan 8 to the drum 2.
  • the positioning of the introduction of steam into the pipe 15 connecting the at least one fan 8 to the drum 2 is downstream of the condenser 9 to limit condensation in said condenser 9.
  • the positioning of the introduction of steam into the pipe 15 connecting the at least one fan 8 to the drum 2 is close to a condensate discharge circuit to allow the evacuation of water droplets formed during the generation of vapor in said condensate circuit.
  • the positioning of the introduction of steam into the pipe 15 connecting said at least one fan 8 to the drum 2 is upstream of said at least one heating element 6 to prevent water droplets from forming, the latter can not falling on said at least one heating element 6.
  • the method of degreasing the laundry according to the invention makes it possible to obtain a cycle of short duration, homogeneity of the diffusion of the vapor over the entire surface of the textiles, to consume a minimum quantity of water and to adapt to the mass of the linen.
  • This method of straightening the laundry also allows to be able to recharge water in the steam generator tray during the cycle or directly after the end of the cycle without risk of deterioration of the machine comprising a steam generator with a water supply drop at drop.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP07110718A 2006-06-21 2007-06-21 Procédé de défroissage du linge dans une machine à sécher le linge Active EP1870506B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09178698.8A EP2163674B1 (fr) 2006-06-21 2007-06-21 Machine à sécher le linge capable d'effectuer un procédé de défroissage du linge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0605734A FR2902806B1 (fr) 2006-06-21 2006-06-21 Procede de defroissage du linge dans une machine a secher le linge

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP09178698.8A Division EP2163674B1 (fr) 2006-06-21 2007-06-21 Machine à sécher le linge capable d'effectuer un procédé de défroissage du linge
EP09178698.8 Division-Into 2009-12-10

Publications (2)

Publication Number Publication Date
EP1870506A1 EP1870506A1 (fr) 2007-12-26
EP1870506B1 true EP1870506B1 (fr) 2012-11-14

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP09178698.8A Active EP2163674B1 (fr) 2006-06-21 2007-06-21 Machine à sécher le linge capable d'effectuer un procédé de défroissage du linge
EP07110718A Active EP1870506B1 (fr) 2006-06-21 2007-06-21 Procédé de défroissage du linge dans une machine à sécher le linge

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09178698.8A Active EP2163674B1 (fr) 2006-06-21 2007-06-21 Machine à sécher le linge capable d'effectuer un procédé de défroissage du linge

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EP (2) EP2163674B1 (es)
ES (2) ES2399250T3 (es)
FR (1) FR2902806B1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101780223B1 (ko) 2016-05-31 2017-10-10 엘지전자 주식회사 의류처리장치의 제어방법
CN107385827B (zh) * 2017-08-18 2023-06-06 浙江海洋大学 一种热泵真空衣物烘干装置
CN112481983B (zh) * 2020-11-20 2023-06-13 广州视源电子科技股份有限公司 衣物护理机
CN113174734B (zh) * 2021-03-29 2022-08-26 无锡小天鹅电器有限公司 一种控制方法、装置、设备及计算机可读存储介质

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207683A (en) * 1979-02-01 1980-06-17 Horton Roberta J Clothes dryer
FR2626588B1 (fr) 1988-01-28 1991-04-26 Martinez Georges Machine a laver le linge dont la cuve est equipee d'elements de lestage
FR2695946B1 (fr) * 1992-09-21 1995-09-08 Moulinex Sa Dispositif de pulverisation d'eau d'un fer electrique a repasser.
FR2706915B1 (es) 1993-06-24 1995-09-08 Martinez Georges Mathias
CH695383A5 (de) * 2001-07-10 2006-04-28 V Zug Ag Wäschetrockner oder Waschautomat mit Bedampfungsvorrichtung.
JP2004057235A (ja) * 2002-07-24 2004-02-26 Matsushita Electric Ind Co Ltd 衣類乾燥機
US8122547B2 (en) * 2004-07-20 2012-02-28 Lg Electronics Inc. Washing machine and method for controlling the same
KR20060061974A (ko) * 2004-12-02 2006-06-09 삼성전자주식회사 의류의 구김제거장치 및 그 방법
US20090139037A1 (en) * 2005-04-22 2009-06-04 Seong Hai Jeong Laundry device and method for controlling the same

Also Published As

Publication number Publication date
EP2163674B1 (fr) 2016-08-24
ES2366236T3 (es) 2011-10-18
FR2902806A1 (fr) 2007-12-28
ES2399250T3 (es) 2013-03-27
FR2902806B1 (fr) 2008-10-17
EP2163674A1 (fr) 2010-03-17
EP1870506A1 (fr) 2007-12-26

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