FR2738262A1 - IMPROVED DRYING PROCESS FOR LAUNDRY AND MACHINE USING THE SAME - Google Patents

IMPROVED DRYING PROCESS FOR LAUNDRY AND MACHINE USING THE SAME Download PDF

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Publication number
FR2738262A1
FR2738262A1 FR9510300A FR9510300A FR2738262A1 FR 2738262 A1 FR2738262 A1 FR 2738262A1 FR 9510300 A FR9510300 A FR 9510300A FR 9510300 A FR9510300 A FR 9510300A FR 2738262 A1 FR2738262 A1 FR 2738262A1
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FR
France
Prior art keywords
speed
drying
drum
laundry
rotation
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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
FR9510300A
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French (fr)
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FR2738262B1 (en
Inventor
Pascal Chabanne
Daniel Remeur
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.)
Esswein SA
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Esswein SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Esswein SA filed Critical Esswein SA
Priority to FR9510300A priority Critical patent/FR2738262B1/en
Priority to EP96401864A priority patent/EP0761864B1/en
Priority to DE69614328T priority patent/DE69614328D1/en
Publication of FR2738262A1 publication Critical patent/FR2738262A1/en
Application granted granted Critical
Publication of FR2738262B1 publication Critical patent/FR2738262B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/30—Drying processes 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/34—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

Le procédé de l'invention consiste essentiellement à faire tourner le tambour, en phase de séchage du linge, à une vitesse nominale supérieure à la vitesse habituellement utilisée, à savoir environ 65 à 70 t/mm. Avantageusement, la vitesse du tambour peut varier autour de cette vitesse nominale.The process of the invention essentially consists in rotating the drum, during the drying phase of the laundry, at a nominal speed greater than the speed usually used, namely approximately 65 to 70 t / mm. Advantageously, the speed of the drum can vary around this nominal speed.

Description

La présente invention a pour objet un procédé de séchageThe subject of the present invention is a drying process

amélioré du linge et une machine le mettant en oeuvre.  improved linen and a machine using it.

Dans la plupart des machines lavantes-séchantes ou séchantes actuelles, I'air chaud est injecté au centre du tambour et doit sortir par la périphérie de ce tambour. Cependant, assez souvent, le linge s'agglomère en un tas qui obture le centre du tambour pendant la phase de séchage, empêchant ainsi l'entrée normale de l'air chaud dans le tambour, ainsi que I'évacuation correcte de l'air chaud ayant pu pénétrer dans le centre du tambour, et qui passe par un "court-circuit", c'est à dire sort aussitôt du  In most modern washer-dryer or drying machines, hot air is injected into the center of the drum and must exit through the periphery of this drum. However, quite often, the laundry aggregates into a pile which closes the center of the drum during the drying phase, thus preventing the normal entry of hot air into the drum, as well as the correct evacuation of air. hot having been able to penetrate into the center of the drum, and which goes through a "short circuit", that is to say immediately leaves the

tambour en traversant le minimum de linge.  drum through the minimum amount of laundry.

La présente invention a pour objet un procédé permettant d'améliorer le séchage du linge d'une machine lavante-séchante ou séchante, en diminuant, à efficacité égale, le temps de séchage, et ce, le plus simplement possible. La présente invention a également pour objet une  The subject of the present invention is a method making it possible to improve the drying of the linen of a washer-dryer or drying machine, by reducing, at equal efficiency, the drying time, and this, as simply as possible. The present invention also relates to a

machine mettant en oeuvre le procédé de l'invention.  machine implementing the method of the invention.

Le procédé de l'invention consiste, en phase de séchage du linge, à faire tourner le tambour à une vitesse "de séchage amélioré" légèrement inférieure à la vitesse de centrifugation de son contenu. De façon  The method of the invention consists, in the drying phase of the laundry, of rotating the drum at an "improved drying" speed slightly lower than the speed of centrifugation of its contents. In a way

avantageuse, cette vitesse est comprise entre 65 et 70 tours/mm environ.  advantageous, this speed is between 65 and 70 revolutions / mm approximately.

Selon un aspect avantageux du procédé de l'invention, la phase de séchage comporte plusieurs étapes, pendant chacune desquelles la vitesse de rotation du tambour est différente d'une étape à la suivante, avantageusement en alternant des étapes à vitesse supérieure, à vitesse égale et à vitesse inférieure à la vitesse de "séchage amélioré". Dans une même étape de séchage, la vitesse peut varier, par exemple, d'une vitesse minimale d'environ 35 à 50 t/mm à une vitesse maximale d'environ 70 à 100 t/mm. La présente invention sera mieux comprise à la lecture de la  According to an advantageous aspect of the process of the invention, the drying phase comprises several stages, during each of which the speed of rotation of the drum is different from one stage to the next, advantageously by alternating stages at higher speed, at equal speed and at a speed lower than the speed of "improved drying". In the same drying step, the speed can vary, for example, from a minimum speed of approximately 35 to 50 t / mm to a maximum speed of approximately 70 to 100 t / mm. The present invention will be better understood on reading the

description détaillée d'un mode de réalisation, pris à titre d'exemple non  detailed description of an embodiment, taken by way of example not

limitatif et illustré par le dessin annexé, sur lequel - les figures 1 et 2 sont respectivement une vue schématisée de côté et une vue schématisée de dessus d'une machine lavante-séchante de I'art antérieur en phase de séchage de linge, et - les figures 3 et 4 sont respectivement une vue schématisée de côté et une vue schématisée de dessus d'une machine lavante-séchante  limiting and illustrated by the appended drawing, in which - FIGS. 1 and 2 are respectively a diagrammatic side view and a diagrammatic view from above of a washer-dryer machine of the prior art in the laundry drying phase, and - Figures 3 and 4 are respectively a schematic side view and a schematic top view of a washer-dryer machine

conforme à l'invention, en phase de séchage de linge.  according to the invention, in the laundry drying phase.

La présente invention se rapporte aussi bien aux machines lavantesséchantes qu'aux machines seulement séchantes, ces machines pouvant être à chargement frontal ou à chargement par le dessus. Pour  The present invention relates to both drying and drying machines as well as to only drying machines, these machines possibly being front-loading or top-loading. For

simplifier, dans la suite de la description, on les qualifiera uniquement de  simplify, in the following description, they will be qualified only as

machines. La machine 1, représentée en figures 1 et 2, comporte, entre autres, un tambour 2 tournant autour de son axe 3 dans une cuve 4. Le circuit de brassage d'air chaud de la machine 1 comporte une turbine 5 dont la conduite d'aspiration d'air 6 est reliée à la partie supérieure de la cuve 4, et dont la conduite d'injection d'air 7 est reliée à la cuve, coaxialement à l'axe 3. Pour simplifier le dessin, les autres parties du circuit de brassage  machines. The machine 1, represented in FIGS. 1 and 2, comprises, inter alia, a drum 2 rotating around its axis 3 in a tank 4. The hot air mixing circuit of the machine 1 comprises a turbine 5 whose pipe d air intake 6 is connected to the upper part of the tank 4, and whose air injection pipe 7 is connected to the tank, coaxially with the axis 3. To simplify the drawing, the other parts of the brewing circuit

d'air chaud (éléments chauffants et condenseur) n'ont pas été représentés.  hot air (heating elements and condenser) have not been shown.

Dans une machine de l'art antérieur (figures 1 et 2), le tambour tourne, en régime de séchage, à la même vitesse qu'en régime de lavage ou de rinçage (dans le cas d'une machine lavante), ce qui permet de simplifier la commande du moteur d'entraînement du tambour. Ceci a pour effet, lorsque la quantité de linge à sécher est telle que ce linge remplit au moins la moitié du tambour (à l'arrêt du celui-ci), de rassembler le linge 8 en une masse relativement compacte qui obstrue au moins partiellement la conduite d'injection d'air chaud 7. Il en résulte que l'air chaud arrivant par la conduite 7 dans le tambour suit un trajet de "court-circuit" entre la conduite 7 et la conduite 6, c'est à dire qu'il longe la paroi latérale du tambour 2 proche de la conduite 7 en traversant à peine le linge 8 qui est trop tassé pour offrir un  In a machine of the prior art (FIGS. 1 and 2), the drum rotates, in drying mode, at the same speed as in washing or rinsing mode (in the case of a washing machine), which simplifies the control of the drum drive motor. This has the effect, when the quantity of laundry to be dried is such that this laundry fills at least half of the drum (when the latter is stopped), to gather the laundry 8 into a relatively compact mass which at least partially obstructs the hot air injection pipe 7. As a result, the hot air arriving through the pipe 7 in the drum follows a "short-circuit" path between the pipe 7 and the pipe 6, that is to say along the side wall of the drum 2 near the pipe 7, barely crossing the laundry 8 which is too tightly packed to offer a

passage à cet air chaud.passage to this hot air.

Par contre, grâce au procédé de l'invention, (figures 3 et 4) selon lequel on fait tourner le tambour, en phase de séchage, à une vitesse de "séchage amélioré" d'environ 65 à 70 t/mm, on répartit sensiblement uniformément le linge 8' en couronne autour d'un "tuyau" central 9 vide de linge, qui constitue le prolongement de la conduite 7. L'air chaud passe naturellement dans ce tuyau 9 et traverse le linge 8' dans tout son volume, puisque celui-ci, du fait qu'il est beaucoup moins tassé que dans le cas précédent (figures 1 et 2), offre relativement peu de résistance au passage de l'air chaud. En outre, du fait qu'il est moins tassé, le linge est moins froissé après séchage. Le "tuyau" 9 a un diamètre qui dépend de la vitesse de rotation du tambour, et qui est égal ou légèrement supérieur au diamètre de la conduite 7. Ainsi, par rapport à l'art antérieur, on améliore le séchage du linge et on diminue le temps de séchage à degré de séchage égal, et par conséquent on diminue aussi la consommation en énergie électrique. De plus, les pièces de linge se trouvant près du tuyau 9 sont beaucoup moins sujettes à la force centrifuge que celles qui sont les plus éloignées de ce tuyau, et peuvent se déplacer par rapport aux autres pièces de linge, en migrant de l'axe vers la périphérie du tambour, assurant ainsi un brassage  On the other hand, thanks to the process of the invention (FIGS. 3 and 4) according to which the drum is rotated, in the drying phase, at an "improved drying" speed of approximately 65 to 70 t / mm, we distribute substantially uniformly the linen 8 'in a ring around a central "pipe" 9 empty of linen, which constitutes the extension of the pipe 7. The hot air passes naturally through this pipe 9 and passes through the linen 8' in all its volume , since it, because it is much less packed than in the previous case (Figures 1 and 2), offers relatively little resistance to the passage of hot air. In addition, because it is less packed, the laundry is less wrinkled after drying. The "pipe" 9 has a diameter which depends on the speed of rotation of the drum, and which is equal to or slightly greater than the diameter of the pipe 7. Thus, compared to the prior art, the drying of the laundry is improved and decreases the drying time for an equal degree of drying, and consequently the consumption of electrical energy is also reduced. In addition, the pieces of laundry near the pipe 9 are much less subject to centrifugal force than those that are furthest from this pipe, and can move relative to other pieces of laundry, migrating from the axis towards the periphery of the drum, thus ensuring mixing

de linge et améliorant l'homogénéité du séchage.  of linen and improving the uniformity of drying.

Selon un aspect avantageux du procédé de l'invention, la vitesse de rotation du tambour en régime de séchage n'est pas maintenue constante. Elle peut varier par paliers ou progressivement autour de la vitesse de séchage amélioré, entre deux limites qui sont par exemple 35 t/mm et 100 t/mm environ, et peut alternativement augmenter et diminuer entre ces deux limites. On peut avantageusement prévoir de courtes pauses durant la phase de séchage, permettant au linge de retomber au fond du tambour à l'arrêt de celui-ci, et de se répartir différemment lorsque le tambour reprend sa rotation. Les différents paliers de vitesse ou les différentes vitesses de rotation du tambour peuvent correspondre à différentes étapes de séchage du linge: début, milieu et fin du séchage, et refroidissement du linge. A chaque arrêt, le tambour peut changer de sens de rotation, de manière à ne pas emmêler le linge, à favoriser l'homogénéité  According to an advantageous aspect of the process of the invention, the speed of rotation of the drum in the drying regime is not kept constant. It can vary in stages or gradually around the improved drying speed, between two limits which are for example 35 t / mm and about 100 t / mm, and can alternately increase and decrease between these two limits. Advantageously, short breaks can be provided during the drying phase, allowing the laundry to fall to the bottom of the drum when it stops, and to be distributed differently when the drum resumes its rotation. The different speed levels or the different rotation speeds of the drum can correspond to different stages of drying of the laundry: start, middle and end of drying, and cooling of the laundry. At each stop, the drum can change direction of rotation, so as not to tangle the laundry, to promote homogeneity

du séchage et à limiter le froissage de ce linge.  drying and limit wrinkling of this laundry.

Claims (9)

REVENDICATIONS 1. Procédé de séchage amélioré du linge dans une machine lavante- séchante ou séchante, caractérisé en ce que pendant la phase de séchage du linge, on fait tourner le tambour à une vitesse de "séchage amélioré" légèrement inférieure à la vitesse de centrifugation de son contenu.  1. Method for improved drying of the linen in a washer-dryer or drying machine, characterized in that during the drying phase of the linen, the drum is rotated at an "improved drying" speed slightly lower than the centrifugation speed of its content. 2. Procédé selon la revendication 1, caractérisé en ce que la2. Method according to claim 1, characterized in that the vitesse de séchage amélioré est comprise entre 65 et 70 t/mm environ.  improved drying speed is between about 65 and 70 t / mm. 3. Procédé selon la revendication ou 2, caractérisé en ce que pendant la phase de séchage on fait varier la vitesse de rotation du tambour  3. Method according to claim or 2, characterized in that during the drying phase is varied the speed of rotation of the drum autour de la vitesse de séchage amélioré.  around the improved drying speed. 4. Procédé selon la revendication 3 caractérisé en ce que la  4. Method according to claim 3 characterized in that the vitesse de rotation du tambour varie entre 35 et 100 t/mm environ.  drum rotation speed varies between about 35 and 100 rpm. 5. Procédé selon l'une des revendications précédentes,  5. Method according to one of the preceding claims, caractérisé en ce que la phase de séchage comporte plusieurs étapes pendant chacune desquelles la vitesse de rotation du tambour est différente  characterized in that the drying phase comprises several stages during each of which the speed of rotation of the drum is different d'une étape à la suivante.from one step to the next. 6. Procédé selon la revendication 5, caractérisé en ce que l'on alterne des étapes à vitesse supérieure, à vitesse égale et à vitesse  6. Method according to claim 5, characterized in that one alternates steps at higher speed, at equal speed and at speed inférieure à la vitesse de séchage amélioré.  lower than the improved drying speed. 7. Procédé selon l'une des revendications précédentes,  7. Method according to one of the preceding claims, caractérisé en ce que l'on ménage des pauses pendant la phase de  characterized in that breaks are made during the phase of séchage du linge.laundry drying. 8. Procédé selon la revendication 7, caractérisé en ce qu'à  8. Method according to claim 7, characterized in that at chaque arrêt du tambour on change son sens de rotation.  each time the drum is stopped, its direction of rotation is changed. 9. Lave-linge séchant ou sèche-linge caractérisé en ce qu'il met  9. Washer dryer or dryer characterized in that it puts en oeuvre le procédé selon l'une des revendication 1 à 8.  implementing the method according to one of claims 1 to 8.
FR9510300A 1995-09-01 1995-09-01 IMPROVED DRYING PROCESS FOR LAUNDRY AND MACHINE USING THE SAME Expired - Fee Related FR2738262B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9510300A FR2738262B1 (en) 1995-09-01 1995-09-01 IMPROVED DRYING PROCESS FOR LAUNDRY AND MACHINE USING THE SAME
EP96401864A EP0761864B1 (en) 1995-09-01 1996-08-30 Method and machine for drying the laundry
DE69614328T DE69614328D1 (en) 1995-09-01 1996-08-30 Method and machine for drying laundry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9510300A FR2738262B1 (en) 1995-09-01 1995-09-01 IMPROVED DRYING PROCESS FOR LAUNDRY AND MACHINE USING THE SAME

Publications (2)

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FR2738262A1 true FR2738262A1 (en) 1997-03-07
FR2738262B1 FR2738262B1 (en) 1997-09-26

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FR9510300A Expired - Fee Related FR2738262B1 (en) 1995-09-01 1995-09-01 IMPROVED DRYING PROCESS FOR LAUNDRY AND MACHINE USING THE SAME

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EP (1) EP0761864B1 (en)
DE (1) DE69614328D1 (en)
FR (1) FR2738262B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010095902A3 (en) * 2009-02-20 2010-10-14 Lg Electronics Inc. Washing machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0937810T3 (en) * 1998-02-24 2003-10-27 Merloni Antonio Spa Process for drying laundry or the like in washing / drying machines or the like
KR100803119B1 (en) 2003-08-26 2008-02-14 엘지전자 주식회사 Method for controlling drying process of drum type washing and drying machine
KR101053581B1 (en) * 2004-02-17 2011-08-03 엘지전자 주식회사 Dry air supply structure for drum washing machine and its operation control method
KR101053580B1 (en) * 2004-02-17 2011-08-03 엘지전자 주식회사 Drying operation control method of drum washing machine
EP1577433B2 (en) 2004-02-17 2015-11-25 LG Electronics, Inc. Operation control method for a drum type washing machine
FR2907806B1 (en) * 2006-10-25 2008-12-05 Brandt Ind Sas METHOD FOR DRYING THE LAUNDRY OF A DRYING MACHINE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3017109A1 (en) * 1980-05-03 1981-11-05 Miele & Cie GmbH & Co, 4830 Gütersloh Tumble-dry procedure for combined washing and drying machine - interrupts slow drum rotation with short-period fast rotation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3017109A1 (en) * 1980-05-03 1981-11-05 Miele & Cie GmbH & Co, 4830 Gütersloh Tumble-dry procedure for combined washing and drying machine - interrupts slow drum rotation with short-period fast rotation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010095902A3 (en) * 2009-02-20 2010-10-14 Lg Electronics Inc. Washing machine
AU2010216546B2 (en) * 2009-02-20 2015-06-11 Lg Electronics Inc. Washing machine

Also Published As

Publication number Publication date
DE69614328D1 (en) 2001-09-13
EP0761864B1 (en) 2001-08-08
FR2738262B1 (en) 1997-09-26
EP0761864A1 (en) 1997-03-12

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