EP1870506A1 - Method of smoothing out the clothes in a laundry drying machine - Google Patents

Method of smoothing out the clothes in a laundry drying machine Download PDF

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Publication number
EP1870506A1
EP1870506A1 EP07110718A EP07110718A EP1870506A1 EP 1870506 A1 EP1870506 A1 EP 1870506A1 EP 07110718 A EP07110718 A EP 07110718A EP 07110718 A EP07110718 A EP 07110718A EP 1870506 A1 EP1870506 A1 EP 1870506A1
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EP
European Patent Office
Prior art keywords
drum
steam
laundry
condenser
steam generator
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
Application number
EP07110718A
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German (de)
French (fr)
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EP1870506B1 (en
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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Brandt Industries SAS
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Filing date
Publication date
Application filed by Brandt Industries SAS filed Critical Brandt Industries SAS
Priority to EP09178698.8A priority Critical patent/EP2163674B1/en
Publication of EP1870506A1 publication Critical patent/EP1870506A1/en
Application granted granted Critical
Publication of EP1870506B1 publication Critical patent/EP1870506B1/en
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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.
  • 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 circulated in a hot air circuit of the dryer in the third stage of steam generation and steam circulation 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 at least one heating element 6 illustrated in FIG.
  • 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.
  • 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.

Abstract

The process of steaming the clothes in a laundry drying machine, comprises pre-heating of a steam generator, pre-heating of a drum (2) using a heating element (6), generating the steam and circulating the steam to the drum, evacuating the steam from the drum, and cooling the clothes contained in the drum. The machine comprises steam generator, a condenser (9) and drum placed inside a body of the machine, where the drum contains steaming cloths and is connected with the condenser by a conduit. The condenser is connected with a ventilator (10) by the conduit. The process of steaming the clothes in a laundry drying machine, comprises pre-heating of a steam generator, pre-heating of a drum (2) using a heating element (6), generating the steam and circulating the steam to the drum, evacuating the steam from the drum, and cooling the clothes contained in the drum. The machine comprises steam generator, a condenser (9) and drum placed inside a body of the machine, where the drum contains steaming cloths and is connected with the condenser by a conduit. The condenser is connected with a ventilator (10) by the conduit, where the ventilator is connected to the drum by the conduit. An air circulation is generated by the ventilator. The heating element is used in half-power during the pre-heating of drum. The drum is rotated to brew the cloths and to homogenize the steam introduction into the drum during the step of generating and circulating the steam. A hot air is introduced and circulated in the machine to dry the cloths during the step of generating and circulating the steam to the drum. The introduction of vapor is controlled and stopped using the steam generator. The condenser functions with its maximum output during the step of evacuation of steam and the cooling of cloths. An independent claim is included for a machine for drying the clothes.

Description

La présente invention concerne d'une part une machine à sécher le linge.The present invention relates on the one hand to a dryer machine.

Elle concerne également un procédé de défroissage du linge dans une machine à sécher le linge de manière à limiter la formation de plis sur le linge lors du séchage, et d'autre part, une machine adaptée à mettre en oeuvre le procédé de défroissage du linge conforme à l'invention.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.

De manière générale, l'invention concerne les machines à sécher le linge, et plus particulièrement les machines à usage domestique.In general, the invention relates to machines for drying clothes, and more particularly machines for domestic use.

On connaît d'une part des machines à laver le linge qui proposent une introduction de vapeur dans le tambour lors d'un cycle de lavage.On the one hand, there are known laundry washing machines which propose an introduction of steam into the drum during a washing cycle.

Ce type de machine à laver le linge est décrit par exemple dans le document EP1275767 .This type of washing machine is described for example in the document EP1275767 .

Cependant, ces machines à laver le linge ont l'inconvénient de ne pas disposer d'un moyen de chauffage de l'air. Par conséquent, la vapeur est introduite dans une structure froide et condense immédiatement sur les parois de la structure. Ces machines à laver le linge ne permettent pas de défroisser le linge efficacement et le linge est humidifié par la vapeur condensée sur les parois du tambour.However, these 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.

La présente invention a pour but de résoudre les inconvénients précités et de proposer un procédé de défroissage du linge dans une machine à sécher le linge permettant de réduire le froissage du linge.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.

A cet effet, la présente invention vise un procédé de défroissage du linge dans une machine à sécher le linge comprenant un générateur de vapeur, un condenseur et un tambour logé à l'intérieur d'une carrosserie, ledit tambour contenant le linge à défroisser, ledit tambour étant relié audit condenseur par une conduite, ledit condenseur étant relié à au moins un ventilateur par une conduite, et ledit au moins un ventilateur étant relié audit tambour par une conduite.For this purpose, 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.

Il comporte successivement les étapes suivantes :

  • une première phase de préchauffage du générateur de vapeur ;
  • une seconde phase de préchauffage du tambour par au moins un élément chauffant et une circulation d'air chaud générée par ledit au moins un ventilateur ;
  • une troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur au tambour ;
  • une quatrième étape d'évacuation de la vapeur du tambour et de refroidissement du linge contenu dans ledit tambour.
It comprises successively the following steps:
  • a first preheating phase of the steam generator;
  • a second phase of preheating of the drum by at least one heating element and a circulation of hot air generated by said at least one fan;
  • a third phase of steam generation and steam circulation from the steam generator to the drum;
  • a fourth step of evacuating the steam from the drum and cooling the laundry contained in said drum.

Ainsi, le préchauffage de la structure par la circulation de l'air chaud permet de limiter la condensation de la vapeur sur les parties métalliques et / ou froides de la machine à sécher le linge.Thus, 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.

En outre, la seconde phase de préchauffage permet d'éviter la dégradation dudit au moins un élément chauffant.In addition, the second preheating phase avoids the degradation of said at least one heating element.

Préférentiellement, ledit au moins un élément chauffant est non blindé de manière à réduire les coûts de fabrication de machine à sécher le linge.Preferably, said at least one heating element is unshielded so as to reduce the cost of manufacturing a machine for drying laundry.

Par ailleurs, la limitation de la condensation de la vapeur dans le tambour permet d'éviter les traces d'eau sur le linge.Moreover, the limitation of the condensation of the steam in the drum makes it possible to avoid traces of water on the laundry.

Le linge introduit dans la machine à sécher le linge peut être sec ou encore mouillé. Lorsque le linge introduit dans le tambour est mouillé, un cycle de séchage classique est effectué avant le cycle de défroissage du linge.The laundry introduced into the dryer may be dry or wet. When the laundry introduced into the drum is wet, a conventional drying cycle is carried out before the laundry unwinding cycle.

Selon une caractéristique préférée de l'invention, ledit au moins un élément chauffant est utilisé à la moitié de sa puissance lors de la seconde phase de préchauffage du tambour.According to a preferred feature of the invention, said at least one heating element is used at half of its power during the second preheating phase of the drum.

Ainsi, le préchauffage à demi puissance dudit au moins un élément chauffant permet de réaliser une économie d'énergie et de limiter la puissance de la machine à sécher le linge.Thus, 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.

En outre, le fonctionnement dudit au moins un élément chauffant à la moitié de sa puissance permet de limiter la température à l'intérieur du tambour pour une meilleure préservation du linge. De cette manière, une surchauffe n'est pas provoquée sur la surface du linge placé à l'intérieur du tambour.In addition, the operation of said at least one heating element to half of its power 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.

Le tambour est entraîné en rotation pour brasser le linge et homogénéiser l'introduction de vapeur dans ledit tambour lors de la troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur audit tambour, d'où la circulation de la vapeur dans le circuit fermé d'air chaud d'une machine à sécher le linge à condensation.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.

La vapeur est introduite et mise en circulation dans un circuit d'air chaud de la machine à sécher le linge lors de la troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur au tambour.The steam is introduced and circulated in a hot air circuit of the dryer in the third stage of steam generation and steam circulation from the steam generator to the drum.

L'introduction de vapeur est régulée par des temps de marche et d'arrêt du générateur de vapeur.The introduction of steam is regulated by the on and off times of the steam generator.

Le temps d'arrêt du générateur de vapeur est présent pour stabiliser la température dudit générateur de vapeur en le refroidissant par de l'eau entrant en goutte à goutte dans ce dernier.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.

L'eau introduite en goutte à goutte est à température ambiante et refroidit le générateur de vapeur étant chaud. Lors des temps d'arrêt d'introduction d'eau dans le générateur de vapeur, ce dernier se réchauffe. Les temps d'arrêt d'introduction d'eau sont nécessaires pour provoquer la montée en température du générateur de vapeur. Si ces temps d'arrêt d'introduction d'eau ne sont pas prévus, le générateur de vapeur évacue des gouttelettes d'eau dans le circuit d'air chaud.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.

Ainsi, l'eau n'est pas introduite sous forme liquide dans le circuit d'air chaud de la machine à sécher le linge mais uniquement sous forme vapeur.Thus, the water is not introduced in liquid form into the hot air circuit of the dryer but only in vapor form.

Le condenseur fonctionne à son rendement maximal lors de la quatrième phase d'évacuation de la vapeur du tambour et de refroidissement du linge contenu dans ledit tambour.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.

Cette quatrième phase du procédé de défroissage du linge permet de retirer le linge du tambour de la machine à sécher le linge sans l'évacuation d'un nuage de vapeur à l'ouverture de la porte d'accès de ladite machine. En outre, la quatrième phase du procédé permet d'éviter à l'utilisateur de se brûler les mains en retirant le linge du tambour.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. In addition, the fourth phase of the method avoids the user to burn his hands by removing the laundry drum.

La présente invention vise également selon un second aspect à fournir une machine à sécher le linge comprenant un générateur de vapeur avec une alimentation en eau par goutte à goutte.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.

Les avantages et caractéristiques particulières propres à la machine à sécher le linge selon l'invention sont similaires à ceux exposés ci-dessus concernant le procédé conforme à l'invention.The particular advantages and characteristics of the clothes drying machine according to the invention are similar to those described above with regard to the process according to the invention.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will become apparent in the description below.

A l'unique dessin annexé, donné à titre d'exemple non limitatif :

  • la figure 1 représente une vue schématique en coupe d'une machine à sécher le linge.
In the only appended drawing, given by way of non-limiting example:
  • Figure 1 shows a schematic sectional view of a machine dryer.

On va décrire tout d'abord en référence à la figure 1 une machine à sécher le linge 1 équipée d'un générateur de vapeur.We will first describe with reference to Figure 1 a dryer machine 1 equipped with a steam generator.

Cette machine à sécher le linge peut être une machine à sécher le linge à usage domestique ou une lavante-séchante.This dryer may be a household clothes dryer or a washer-dryer.

On a illustré sur ce mode de réalisation une machine à chargement par le dessus. Bien entendu, la présente invention s'applique à tous les types de machine à sécher le linge, et notamment à chargement frontal.In this embodiment, an overhead loading machine has been illustrated. Of course, the present invention applies to all types of machine for drying clothes, including front loading.

Cette machine à sécher le linge 1 comporte une carrosserie comprenant une ouverture d'accès à l'intérieur de la carrosserie. Dans les machines à chargement par le dessus, cette ouverture d'accès est réalisée dans une portion supérieure de la carrosserie, et dans cet exemple, dans un plan supérieur de la carrosserie.This dryer 1 comprises a bodywork comprising an access opening inside the bodywork. In top loading machines, this access opening is made in an upper portion of the body, and in this example, in an upper plane of the body.

Une porte d'accès est adaptée à obturer cette ouverture de la carrosserie de la machine 1, notamment lors du fonctionnement de celle-ci.An access door is adapted to close this opening of the body of the machine 1, in particular during operation thereof.

Dans cet exemple de réalisation, et de manière nullement limitative, la porte d'accès est montée pivotante autour d'un axe de rotation solidaire de la carrosserie de la machine 1.In this embodiment, and in no way limiting, the access door is pivotally mounted about an axis of rotation integral with the bodywork of the machine 1.

La carrosserie de la machine 1 est adaptée à loger un tambour 2 qui est adapté notamment à sécher le linge par une circulation d'air chaud. Le tambour 2 est mobile en rotation autour d'un axe 3 lors des différentes phases des cycles de séchage de la machine.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.

On notera que la figure est schématique et que de nombreux organes nécessaires au fonctionnement de la machine ont été omis et n'ont pas besoin d'être décrits en détail ici.Note that the figure is schematic and that many organs necessary for the operation of the machine have been omitted and do not need to be described in detail here.

Afin de permettre l'introduction et le retrait du linge à l'intérieur du tambour rotatif 2, celui-ci comporte de manière connue une porte. Cette porte d'accès, par exemple formée de deux portillons et montés en pivotement sur la virole du tambour 2, permet de fermer une ouverture ménagée dans ladite virole dudit tambour 2.In order to allow the introduction and removal of the laundry inside the rotary drum 2, it comprises in a known manner a door. 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.

Un tableau de commande est également prévu en partie supérieure de la machine 1.A control panel is also provided in the upper part of the machine 1.

Seuls les moyens spécifiques à la mise en oeuvre du procédé de défroissage du linge conforme à l'invention seront décrits ci-après.Only the specific means for the implementation of the method of unwinding the laundry according to the invention will be described below.

Bien entendu, la machine à sécher le linge conforme à l'invention comporte l'ensemble des équipements et moyens nécessaires à la mise en oeuvre d'un processus de séchage classique dans une telle machine à tambour rotatif.Of course, 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.

La machine à sécher le linge 1 comprend un générateur de vapeur 12 avec une alimentation en eau par goutte à goutte.The laundry dryer 1 comprises a steam generator 12 with a water supply by drip.

En pratique, le générateur de vapeur 12 est un générateur de vapeur à tube avec un débit d'eau faible. Le diamètre du tube du générateur de vapeur 12 est de l'ordre de 8mm.In practice, 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.

On va décrire à présent une machine à sécher le linge adapté à mettre en oeuvre le procédé de défroissage du linge conforme à l'invention, en référence à la figure 1.We will now describe a drying machine adapted to implement the method of degreasing the laundry according to the invention, with reference to Figure 1.

Une machine à sécher le linge 1 à condenseur comprend deux circuits d'air. Un premier circuit d'air est communément appelé circuit d'air chaud 4 et un second circuit d'air appelé circuit d'air froid 5.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.

Le circuit d'air chaud 4 est en boucle fermée et l'air chauffé par au moins un élément chauffant 6. L'air chauffé traverse le linge contenu dans le tambour 2 et l'air chauffé se charge de l'humidité contenue par le linge. Lors de cette phase, l'air est refroidi d'une température de l'ordre de 110°C à une température de l'ordre de 70°C.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.

L'air chauffé et humide traverse un filtre 7 placé à une sortie d'évacuation du tambour 2 pour récupérer les peluches contenues dans ledit air chauffé et humide. Un ventilateur 8 fait circuler l'air chaud et humide à l'intérieur d'un condenseur 9. L'air chaud et humide est refroidi dans des tubes du condenseur 9 et l'humidité de l'air est condensée. Le condenseur 9 est refroidi par échange de chaleur avec de l'air ambiant. Puis, l'air est de nouveau chauffé par ledit au moins un élément chauffant 6.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.

La machine à sécher le linge 1 peut également être pourvue d'un condenseur 9 à plaques à la place d'un condenseur 9 à tubes.The laundry dryer 1 may also be provided with a plate condenser 9 in place of a condenser 9 with tubes.

Le circuit d'air froid 5 est en circuit ouvert où de l'air ambiant est aspiré par un ventilateur 10 à l'arrière de la machine à sécher le linge 1. Le ventilateur 10 propulse l'air ambiant dans le condenseur 9 sur l'extérieur des tubes dudit condenseur 9 afin de le refroidir. L'air ambiant réchauffé dans le condenseur 9 est évacué dans une pièce par une face frontale de la machine à sécher le linge 1.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.

Un moteur 11 permet l'entraînement du tambour 2 pour le brassage du linge avec une rotation alternée afin d'éviter le nouage du linge. Ledit moteur 11 peut également entraîner les deux ventilateurs 8 et 10.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.

Les deux ventilateurs 8 et 10 sont de technologie centrifuge. Le débit d'air est plus important dans un sens dit positif par rapport à un sens inversé dit négatif. Le facteur de débit d'air entre le sens positif et le sens négatif des ventilateurs 8 et 10 est sensiblement de l'ordre de 3.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.

L'eau récupérée par le condenseur 9 peut être relevée par une pompe vers un bac placé en partie haute de la machine 1, soit récupérée par gravité dans un bac en partie basse de la machine 1 en fonction de ladite machine à sécher le linge 1.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 .

La machine à sécher le linge 1 est également équipée d'un générateur de vapeur 12 alimenté en eau par une pompe provenant d'un bac. Lors de la mise en oeuvre d'un cycle de défroissage du linge, la vapeur produite par le générateur de vapeur 12 est injectée dans le circuit d'air chaud 4 pour humidifier le linge afin de le défroisser.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.

Le bac du générateur de vapeur 12 peut être rempli par l'utilisateur avec de l'eau du réseau ou encore de l'eau déminéralisée.The tank of the steam generator 12 can be filled by the user with mains water or demineralised water.

Le cycle de défroissage du linge se déroule avec une rotation du tambour 2 alternée pour éviter le nouage du linge. La rotation du tambour 2 contenant le linge à défroisser permet de brasser le linge et créer un échange entre l'air humide et la vapeur et avec le linge.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.

On va décrire à présent le procédé de défroissage du linge conforme à l'invention, en référence à la figure 1.We will now describe the method of unwinding the laundry according to the invention, with reference to Figure 1.

La charge de linge introduite dans le tambour 2 de la machine à sécher le linge 1 est principalement sèche et froissée au départ du cycle de défroissage du linge.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.

Le procédé de défroissage du linge dans une machine à sécher le linge 1 comprend un générateur de vapeur 12, un condenseur 9 et un tambour 2 logé à l'intérieur d'une carrosserie.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.

Ledit tambour 2 contient le linge à défroisser et est relié audit condenseur 9 par une conduite 13. Ledit condenseur 9 est relié à au moins un ventilateur 8 par une conduite 14. Et ledit au moins un ventilateur 8 est relié audit tambour 2 par une conduite 15.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. And said at least one fan 8 is connected to said drum 2 by a pipe 15.

Le procédé de défroissage du linge comporte successivement les étapes suivantes :

  • une première phase de préchauffage du générateur de vapeur 12 ;
  • une seconde phase de préchauffage du tambour 2 par au moins un élément chauffant 6 et une circulation d'air chaud générée par ledit au moins un ventilateur 8 ;
  • une troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur 12 au tambour 2 ;
  • une quatrième étape d'évacuation de la vapeur du tambour 2 et de refroidissement du linge contenu dans ledit tambour 2.
The method of degreasing the laundry successively comprises the following steps:
  • a first preheating phase of the steam generator 12;
  • a second preheating phase of the drum 2 by at least one heating element 6 and a hot air flow generated by said at least one fan 8;
  • a third phase of steam generation and steam circulation of the steam generator 12 to the drum 2;
  • a fourth step of evacuating the steam from the drum 2 and cooling the laundry contained in said drum 2.

Le remplissage du bac du générateur de vapeur 12 peut être rempli à tout moment du procédé de défroissage du linge conforme à l'invention. Ce remplissage est possible grâce au générateur de vapeur 12 alimenté en eau en goutte à goutte par une ouverture d'entrée. Le générateur de vapeur 12 peut être un réservoir fermé chauffant au niveau de sa partie inférieure. Le générateur de vapeur 12 comprend une ouverture de sortie pour diriger la vapeur produite vers le circuit d'air chaud 4 de la machine à sécher le linge 1.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.

La première phase du procédé de défroissage du linge consiste à chauffer le générateur de vapeur 12 pour que l'eau introduite dans ce dernier tombe sur une surface chauffée et l'eau est vaporisée instantanément.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.

Pour permettre l'introduction de la vapeur dans le circuit d'air chaud 4 de la machine à sécher le linge 1, la structure de ladite machine, en particulier le tambour 2, doit être suffisamment chaude pour éviter la condensation de la vapeur sur les parties métalliques et / ou froides ainsi que sur ledit au moins un élément chauffant 6. Ledit au moins un élément chauffant 6 pourrait être dégradé par la présence d'eau. En particulier dans le cas où ledit au moins un élément chauffant 6 est non blindé.To allow the introduction of steam into the hot air circuit 4 of the clothes dryer 1, the structure of said machine, in particular the drum 2, must be sufficiently hot to prevent condensation of the steam on the machine. metal parts and / or cold and on said at least one heating element 6. 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.

En outre, le fait d'empêcher la condensation de la vapeur supprime la possibilité d'observer des taches d'eau sur le linge.In addition, preventing the condensation of steam eliminates the possibility of observing water spots on the laundry.

Ledit au moins un élément chauffant 6 est utilisé à la moitié de sa puissance lors de la seconde phase de préchauffage du tambour 2.Said at least one heating element 6 is used at half of its power during the second preheating phase of the drum 2.

Préférentiellement, ledit au moins un élément chauffant 6 est utilisé sur une seule partie et notamment celle placée en partie amont dans le circuit de d'air chaud 4. L'utilisation de la partie amont dudit au moins un élément chauffant 6 permet d'éviter la condensation sur la totalité dudit au moins un élément chauffant 6. La partie amont dudit au moins un élément chauffant 6 correspond à la première moitié inférieure dudit au moins un élément chauffant 6 illustré à la figure 1.Preferably, 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 at least one heating element 6 illustrated in FIG.

L'utilisation de la demi puissance dudit au moins un élément chauffant 6 permet d'économiser de l'énergie et de limiter la puissance de la machine 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.

En outre, le fonctionnement dudit au moins un élément chauffant à la moitié de sa puissance permet de limiter la température à l'intérieur du tambour pour une meilleure préservation du linge. De cette manière, une surchauffe n'est pas provoquée sur la surface du linge placé à l'intérieur du tambour.In addition, the operation of said at least one heating element to half of its power 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.

Le tambour 2 est entraîné en rotation pour brasser le linge et homogénéiser l'introduction de vapeur dans ledit tambour 2 lors de la troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur 12 audit tambour 2.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.

Le circuit d'air chaud 4 permet de minimiser la condensation de vapeur pour optimiser la consommation d'eau et l'apport d'énergie thermique.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.

Le circuit d'air chaud 4 permet de condenser le moins possible de vapeur, provenant du tambour 2, afin de consommer une quantité minimale d'eau et de limiter l'apport d'énergie thermique, et de réduire le bruit de la machine à sécher le linge 1 de l'ordre de 2dB.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.

Le moyen utilisé pour diminuer le rendement du condenseur 9 est de réduire le flux d'air ambiant pour limiter l'échange thermique.The means used to reduce the efficiency of the condenser 9 is to reduce the flow of ambient air to limit the heat exchange.

Lors de la troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur 12 au tambour 2, une rotation inversée d'un ventilateur 10 du circuit d'air froid 5 est mise en oeuvre. La rotation du ventilateur 10 du circuit d'air froid 5 est inversée par rapport au sens de fonctionnement optimum dudit ventilateur 10. Ainsi, la condensation de la vapeur est minimisée dans le but d'optimiser le défroissage du linge.During the third steam generation and steam circulation phase of the steam generator 12 to the drum 2, an inverted rotation of a fan 10 of the cold air circuit 5 is carried out. The rotation of the fan 10 of the cold air circuit 5 is reversed relative to the optimum operating direction of said fan 10. Thus, the condensation of the steam is minimized in order to optimize the unwinding of the laundry.

La rotation en sens inverse dudit ventilateur 10 du circuit d'air froid 10, le débit d'air est limité et par conséquent le rendement du condenseur 9 est réduit. Le condenseur 9 est moins refroidi donc la vapeur présente dans le circuit d'air chaud 4 est moins condensée. Ladite vapeur peut alors être réinjectée dans le tambour 2 de la machine à sécher le linge 1.The rotation in the opposite direction of said fan 10 of the cold air circuit 10, the air flow is limited and therefore the efficiency of the condenser 9 is reduced. The condenser 9 is cooled less so the steam present in the hot air circuit 4 is less condensed. Said steam can then be reinjected into the drum 2 of the dryer 1.

Ainsi, un gain d'énergie et de consommation d'eau est réalisé.Thus, a gain in energy and water consumption is achieved.

Dans le cas où un seul moteur 11 entraîne le tambour 2 et ledit ventilateur 10 du circuit d'air froid 5, la rotation du tambour 2 est également inversée lors de ladite troisième phase.In the case where a single motor 11 drives the drum 2 and said fan 10 of the cold air circuit 5, the rotation of the drum 2 is also reversed during said third phase.

L'utilisation d'un même moteur 11 pour entraîner le ventilateur 10 du circuit d'air froid 5 et le tambour 2 permet de réaliser un gain de coût et de place dans la machine 1.The use of the same motor 11 for driving the fan 10 of the cold air circuit 5 and the drum 2 makes it possible to save money and space in the machine 1.

Le rendement du condenseur 9 avec un ventilateur 10 du circuit d'air froid 5 tournant dans le sens positif est de l'ordre de 70%.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%.

La puissance échangée dans le condenseur 9 est de l'ordre de 2000W.The power exchanged in the condenser 9 is of the order of 2000W.

Le changement de sens de rotation du tambour 2 permet également de modifier le sens de rotation du ventilateur 10 et ainsi de modifier le débit d'air ambiant traversant le condenseur 9. Un débit d'air plus faible généré par le ventilateur 10 crée un échange thermique moindre entre l'air chaud humide et l'air ambiant. Ainsi, le rendement du condenseur 9 est de l'ordre de 30%.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. Thus, the efficiency of the condenser 9 is of the order of 30%.

La puissance échangée dans le condenseur 9 est de l'ordre de 800W.The power exchanged in the condenser 9 is of the order of 800W.

En outre, le ventilateur 8 du circuit d'air chaud 4 est aussi entraîné par le moteur 11 et ledit ventilateur 8 tournant également en sens inverse. Ainsi, le circuit d'air chaud 4 a un débit d'air moindre. Par ailleurs, la puissance dudit au moins un élément chauffant 6 est plus faible pour obtenir une température en sortie de la conduite 15 sensiblement identique.In addition, 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. Thus, the hot air circuit 4 has a lower air flow. Moreover, 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.

Un débit d'air chaud plus faible permet également de limiter le risque d'entraînement de gouttelettes d'eau pouvant être évacuées avec la vapeur dans le circuit d'air chaud 4 et par conséquent de limiter le risque de court-circuit dudit au moins un élément chauffant 6.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.

La génération de vapeur peut être interrompue lors de la rotation du tambour 2 dans ledit sens positif.The steam generation can be interrupted during the rotation of the drum 2 in said positive direction.

Le refroidissement par le condenseur 9 est également moins important, d'où, un échange thermique minimisé.The cooling by the condenser 9 is also less important, hence a minimized heat exchange.

La vapeur est introduite et mise en circulation dans un circuit d'air chaud 4 de la machine à sécher le linge 1 lors de la troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur 12 au tambour 2.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.

L'introduction de vapeur est régulée par des temps de marche et d'arrêt du générateur de vapeur 12.The introduction of steam is regulated by the on and off times of the steam generator 12.

Le temps d'arrêt du générateur de vapeur 12 est présent pour stabiliser la température dudit générateur de vapeur 12 en le refroidissant par de l'eau entrant en goutte à goutte dans ce dernier.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.

L'eau introduite en goutte à goutte est à température ambiante et refroidit le générateur de vapeur étant chaud. Lors des temps d'arrêt d'introduction d'eau dans le générateur de vapeur, ce dernier se réchauffe. Les temps d'arrêt d'introduction d'eau sont nécessaires pour provoquer la montée en température du générateur de vapeur. Si ces temps d'arrêt d'introduction d'eau ne sont pas prévus, le générateur de vapeur évacue des gouttelettes d'eau dans le circuit d'air chaud.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.

Ainsi, l'eau n'est pas introduite sous forme liquide dans le circuit d'air chaud 4 de la machine à sécher le linge 1 mais uniquement sous forme vapeur.Thus, the water is not introduced in liquid form into the hot air circuit 4 of the dryer 1 but only in vapor form.

Le condenseur 9 fonctionne à son rendement maximal lors de la quatrième phase d'évacuation de la vapeur du tambour 2 et de refroidissement du linge contenu dans ledit tambour 2.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.

Lors de cette quatrième phase du procédé de défroissage du linge, les ventilateurs 8 et 10 fonctionnent dans le sens positif.During this fourth phase of the laundry degreasing process, the fans 8 and 10 operate in the positive direction.

Cette quatrième phase du procédé de défroissage du linge permet de retirer le linge du tambour 2 de la machine à sécher le linge 1 sans l'évacuation d'un nuage de vapeur à l'ouverture de la porte d'accès de ladite machine 1. En outre, la quatrième phase du procédé permet d'éviter à l'utilisateur de se brûler les mains en retirant le linge du tambour 2.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. In addition, the fourth phase of the method avoids the user to burn his hands by removing the laundry drum 2.

La première phase du procédé de défroissage du linge a une durée de l'ordre de 2 minutes à 3 minutes. La durée de la première phase du procédé de défroissage du linge est dépendante du type de générateur de vapeur et de sa puissance.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.

La seconde phase de préchauffage du tambour 2 par au moins un élément chauffant 6 et une circulation d'air chaud générée par ledit au moins un ventilateur 8 a une durée de l'ordre de 3 minutes.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.

La première phase et la seconde phase peuvent être réalisées simultanément. Dans ce mode de réalisation de l'invention, la deuxième phase du procédé de défroissage du linge se prolonge d'environ une minute par rapport à ladite première phase.The first phase and the second phase can be performed simultaneously. In this embodiment of the invention, the second phase of the laundry degreasing process is approximately one minute longer than said first phase.

La troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur 12 au tambour 2 a une durée de l'ordre de 10 minutes.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.

La quatrième phase d'évacuation de la vapeur du tambour 2 et de refroidissement du linge contenu dans ledit tambour 2 a une durée de l'ordre de deux 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.

La quantité d'eau injectée à chaque cycle de défroissage du linge dans le générateur de vapeur 12 est de l'ordre de 200mL à 300mL.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.

Le procédé de défroissage du linge dans une machine à sécher le linge 1 à condensation comprend un générateur de vapeur 12, un condenseur 9 et un tambour 2 logé à l'intérieur d'une carrosserie.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.

Ledit tambour 2 contient le linge à défroisser et est relié audit condenseur 9 par une conduite 13. Ledit condenseur 9 est relié à au moins deux ventilateurs 8 et 10 chacun par une conduite 14 et 16.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.

Et ledit au moins un ventilateur 8 est relié audit tambour 2 par une conduite 15.And said at least one fan 8 is connected to said drum 2 by a pipe 15.

Le procédé de défroissage du linge dans une machine à sécher le linge 1 à condensation comporte au moins l'étape suivante :

  • une phase de brassage du linge où le fonctionnement du condenseur 9 est à son rendement minimum afin de minimiser la condensation de vapeur lors de son passage dans ledit condenseur 9 ;
  • ladite phase de brassage du linge étant exécuté pendant une phase d'introduction de la vapeur dans un circuit d'air chaud 4 de ladite machine 1.
The method of straightening the laundry in a condensing dryer 1 comprises at least the following step:
  • a laundry mixing phase where the operation of the condenser 9 is at its minimum efficiency in order to minimize the condensation of steam during its passage in said condenser 9;
  • said brewing phase of the laundry being performed during a steam introduction phase in a hot air circuit 4 of said machine 1.

Cette phase de brassage du linge permet de limiter le refroidissement du condenseur 9 et par conséquent la condensation de la vapeur.This brewing phase of the laundry makes it possible to limit the cooling of the condenser 9 and consequently the condensation of the steam.

Ainsi, la consommation en eau et en énergie est optimisée lors de la mise en oeuvre d'un cycle de défroissage du linge par de la vapeur. La durée du cycle de défroissage est également optimisée.Thus, 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.

Ledit au moins un ventilateur 10 fonctionne périodiquement et majoritairement dans le sens de rotation inverse par rapport au sens de rotation de fonctionnement ayant un débit maximum lors de la phase de brassage du linge pour obtenir le rendement minimum du condenseur 9.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.

Ainsi, le rendement du condenseur 9 est minimum pour empêcher la condensation de la vapeur lors de son passage dans ledit condenseur 9.Thus, the efficiency of the condenser 9 is minimum to prevent condensation of the steam as it passes through said condenser 9.

Le rapport de durée de fonctionnement dudit au moins un ventilateur 10 dans le sens de rotation ayant un débit maximum par rapport au sens de rotation inverse est compris entre 1/5ème et 1/15ème, et préférentiellement de l'ordre de 1/10ème.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 .

Ledit au moins un élément chauffant 6 fonctionne à la moitié de sa puissance lors de la phase de brassage du linge, et préférentiellement à une puissance de l'ordre de 1000W.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.

Ledit au moins un élément chauffant 6 est situé dans une conduite 15 reliant ledit au moins un ventilateur 8 et le tambour 2.Said at least one heating element 6 is located in a pipe 15 connecting said at least one fan 8 and the drum 2.

Préférentiellement, ledit au moins un élément chauffant 6 est utilisé sur une seule partie et notamment celle placée en partie amont dans le circuit de d'air chaud 4. L'utilisation de la partie amont dudit au moins un élément chauffant 6 permet d'éviter la condensation sur la totalité dudit au moins un élément chauffant 6. La partie amont dudit au moins un élément chauffant 6 correspond à la première moitié inférieure dudit au moins un élément chauffant 6 illustré à la figure 1.Preferably, 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.

L'introduction de la vapeur du générateur de vapeur 12 s'effectue dans la conduite 15 reliant ledit au moins un ventilateur 8 au tambour 2.The steam generator 12 is introduced into the pipe 15 connecting the at least one fan 8 to the drum 2.

Le positionnement de l'introduction de vapeur dans la conduite 15 reliant ledit au moins un ventilateur 8 au tambour 2 est en aval du condenseur 9 pour limiter la condensation dans ledit condenseur 9.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.

Le positionnement de l'introduction de vapeur dans la conduite 15 reliant ledit au moins un ventilateur 8 au tambour 2 est à proximité d'un circuit d'évacuation des condensas pour permettre l'évacuation de gouttelettes d'eau formées lors de la génération de vapeur dans ledit circuit de condensas.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.

Le positionnement de l'introduction de vapeur dans la conduite 15 reliant ledit au moins un ventilateur 8 au tambour 2 est en amont dudit au moins un élément chauffant 6 pour éviter qu'en cas de formations de gouttelettes d'eau, ces dernières ne puissent tomber sur ledit au moins un élément chauffant 6.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.

Le procédé de défroissage du linge conforme à l'invention permet d'obtenir un cycle de durée courte, une homogénéité de la diffusion de la vapeur sur toute la surface des textiles, de consommer une quantité minimum d'eau et de s'adapter à la masse du linge.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.

Ce procédé de défroissage du linge permet également de pouvoir recharger en eau le bac du générateur de vapeur au cours du cycle ou directement après la fin du cycle sans risque de détérioration de la machine comprenant un générateur de vapeur avec une alimentation en eau en goutte à goutte.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.

Bien entendu, de nombreuses modifications peuvent être apportées à l'exemple de réalisation décrit précédemment sans sortir du cadre de l'invention.Of course, many modifications can be made to the embodiment described above without departing from the scope of the invention.

Claims (8)

Procédé de défroissage du linge dans une machine à sécher le linge (1) comprenant un générateur de vapeur (12), un condenseur (9) et un tambour (2) logé à l'intérieur d'une carrosserie, ledit tambour (2) contenant le linge à défroisser, ledit tambour (2) étant relié audit condenseur (9) par une conduite (13), ledit condenseur (9) étant relié à au moins un ventilateur (8) par une conduite (14), et ledit au moins un ventilateur (8) étant relié audit tambour (2) par une conduite (15), caractérisé en ce qu'il comporte successivement les étapes suivantes : - une première phase de préchauffage du générateur de vapeur (12) ; - une seconde phase de préchauffage du tambour (2) par au moins un élément chauffant (6) et une circulation d'air chaud générée par ledit au moins un ventilateur (8) ; - une troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur (12) au tambour (2) ; - une quatrième étape d'évacuation de la vapeur du tambour (2) et de refroidissement du linge contenu dans ledit tambour (2). Method of straightening laundry in a clothes drying machine (1) comprising a steam generator (12), a condenser (9) and a drum (2) housed inside a body, said drum (2) containing the laundry to be stripped, said drum (2) being connected to said condenser (9) by a pipe (13), said condenser (9) being connected to at least one fan (8) by a pipe (14), and said at least one fan (8) being connected to said drum (2) by a pipe (15), characterized in that it comprises successively the following steps: a first preheating phase of the steam generator (12); a second phase of preheating of the drum (2) by at least one heating element (6) and a circulation of hot air generated by said at least one fan (8); - a third phase of steam generation and steam circulation of the steam generator (12) to the drum (2); a fourth step of evacuating the steam from the drum (2) and cooling the laundry contained in said drum (2). Procédé de défroissage du linge dans une machine à sécher le linge selon la revendication 1, caractérisé en ce que ledit au moins un élément chauffant (6) est utilisé à la moitié de sa puissance lors de la seconde phase de préchauffage du tambour (2).Method for straightening laundry in a clothes drying machine according to claim 1, characterized in that said at least one heating element (6) is used at half of its power during the second preheating phase of the drum (2) . Procédé de défroissage du linge dans une machine à sécher le linge selon la revendication 1 ou 2, caractérisé en ce que le tambour (2) est entraîné en rotation pour brasser le linge et homogénéiser l'introduction de vapeur dans ledit tambour (2) lors de la troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur (12) audit tambour (2).Method for straightening laundry in a clothes drying machine according to claim 1 or 2, characterized in that the drum (2) is rotated to stir the laundry and homogenize the introduction of steam into said drum (2) when the third phase of steam generation and steam circulation of the steam generator (12) to said drum (2). Procédé de défroissage du linge dans une machine à sécher le linge selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la vapeur est introduite et mise en circulation dans un circuit d'air chaud de la machine à sécher le linge (1) lors de la troisième phase de génération de vapeur et de circulation de la vapeur du générateur de vapeur (12) au tambour (2).Method for straightening laundry in a clothes drying machine according to one of claims 1 to 3, characterized in that the steam is introduced and circulated in a hot air circuit of the dryer ( 1) during the third phase of steam generation and steam circulation of the steam generator (12) to the drum (2). Procédé de défroissage du linge dans une machine à sécher le linge selon l'une quelconque des revendications précédentes, caractérisé en ce que l'introduction de vapeur est régulée par des temps de marche et d'arrêt du générateur de vapeur (12).Method for straightening laundry in a clothes drying machine according to any one of the preceding claims, characterized in that the introduction of steam is regulated by the on and off times of the steam generator (12). Procédé de défroissage du linge dans une machine à sécher le linge selon l'une quelconque des revendications précédentes, caractérisé en ce que le condenseur (9) fonctionne à son rendement maximal lors de la quatrième phase d'évacuation de la vapeur du tambour (2) et de refroidissement du linge contenu dans ledit tambour (2).Method for straightening laundry in a clothes drying machine according to one of the preceding claims, characterized in that the condenser (9) operates at its maximum efficiency during the fourth phase of evacuation of the steam from the drum (2) and cooling of the laundry contained in said drum (2). Machine à sécher le linge comprenant un générateur de vapeur (12) avec une alimentation en eau par goutte à goutte, caractérisé en qu'elle est adaptée à mettre en oeuvre le procédé de défroissage du linge conforme à l'une des revendications 1 à 6.A clothes drying machine comprising a steam generator (12) with a drip water supply, characterized in that it is adapted to carry out the laundry de-creasing process according to one of claims 1 to 6 . Machine à sécher le linge selon la revendication 7, caractérisé en ce que ledit au moins un élément chauffant (6) est non blindé.A clothes drying machine according to claim 7, characterized in that said at least one heating element (6) is unshielded.
EP07110718A 2006-06-21 2007-06-21 Method of smoothing out the clothes in a laundry drying machine Active EP1870506B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09178698.8A EP2163674B1 (en) 2006-06-21 2007-06-21 Laundry drying machine capable of carrying out a method of smoothing out the clothes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0605734A FR2902806B1 (en) 2006-06-21 2006-06-21 METHOD FOR LAUNDRYING LAUNDRY IN A LAUNDRY DRYER

Related Child Applications (2)

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EP09178698.8 Division-Into 2009-12-10

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ES (2) ES2366236T3 (en)
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CN107385827A (en) * 2017-08-18 2017-11-24 浙江海洋大学 A kind of heat pump vacuum clothing drying unit
CN112481983A (en) * 2020-11-20 2021-03-12 广州视源电子科技股份有限公司 Clothes nursing machine
CN113005739A (en) * 2016-05-31 2021-06-22 Lg电子株式会社 Control method of clothes treatment device
WO2022205920A1 (en) * 2021-03-29 2022-10-06 无锡小天鹅电器有限公司 Control method, apparatus and device, and computer readable storage medium

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US4207683A (en) * 1979-02-01 1980-06-17 Horton Roberta J Clothes dryer
EP0326502B1 (en) 1988-01-28 1992-12-23 Georges Martinez Washing machine tub with ballast elements
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WO2022205920A1 (en) * 2021-03-29 2022-10-06 无锡小天鹅电器有限公司 Control method, apparatus and device, and computer readable storage medium

Also Published As

Publication number Publication date
EP1870506B1 (en) 2012-11-14
FR2902806A1 (en) 2007-12-28
EP2163674B1 (en) 2016-08-24
EP2163674A1 (en) 2010-03-17
ES2399250T3 (en) 2013-03-27
ES2366236T3 (en) 2011-10-18
FR2902806B1 (en) 2008-10-17

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