EP0252323B1 - Machine combinée à laver et à sécher le linge - Google Patents

Machine combinée à laver et à sécher le linge Download PDF

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Publication number
EP0252323B1
EP0252323B1 EP87108385A EP87108385A EP0252323B1 EP 0252323 B1 EP0252323 B1 EP 0252323B1 EP 87108385 A EP87108385 A EP 87108385A EP 87108385 A EP87108385 A EP 87108385A EP 0252323 B1 EP0252323 B1 EP 0252323B1
Authority
EP
European Patent Office
Prior art keywords
tub
drum
opening
laundry
drying
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.)
Expired - Lifetime
Application number
EP87108385A
Other languages
German (de)
English (en)
Other versions
EP0252323A2 (fr
EP0252323A3 (en
Inventor
Olindo Regazzo
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Publication of EP0252323A2 publication Critical patent/EP0252323A2/fr
Publication of EP0252323A3 publication Critical patent/EP0252323A3/en
Application granted granted Critical
Publication of EP0252323B1 publication Critical patent/EP0252323B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis

Definitions

  • the present invention relates to a combined laundry washing and drying machine.
  • the invention relates to an electric household appliance of the front-loading type comprising a tub in which a drum adapted to contain the laundry during the washing cycle as well as during the drying cycle is mounted for rotation about a horizontal axis.
  • the drying process may be carried out with a closed air flow path in which a forced air flow is circulated through a heating device, the drum containing the laundry, and a dehumidifying device, as described for instance in Italian Patent Application No. 45718, filed on April 9, l986 by the present applicant, or with an open air flow circuit in which ambient air is aspirated, heated, brought into contact with the laundry, and discharged from the machine in a moist and hot state, as described in IT-PS No. 1,045,582.
  • the heated drying air is brought into contact with the laundry only through the front opening of the drum, as described for instance in German Patent Application No. l,585,675, or is directed through a single opening formed in the tub so as to pass through the cylindrical outer wall of the drum in a radial direction, as decribed for instance in German Patent Application No. 2,306,873.
  • Another disadvantageous aspect of this solution is due to the fact that the thorough drying of the laundry at locations farther away from the opening of the drum results in the laundry more closely adjacent the air entrance opening being excessively dried and in danger of being damaged thereby.
  • the result is a very slow and thus expensive drying process, since the drying effect is mainly obtained by the migration of the moisture from the center towards the peripheral layers of the laundry, and only to a very small degree by direct contact of the laundry with the drying air flow.
  • the hot air flow sweeps the greatest possible surface area of the moist laundry, and that the water vapour is mainly carried away by the movement of the hot air.
  • the washing program provides one or more spin-drying steps in the course of the washing process.
  • a further object of the invention is to prevent in a simple and efficient manner the obturation of the hot drying air supply conduit by the foam formed during the washing process.
  • a combined laundry washing and drying machine particularly of the front-loading type and for domestic use, comprising a tub in which a drum adapted to contain the laundry during the washing cycle as well as during the drying cycle is mounted for rotation about a horizontal axis, a drying air flow circuit including a fan for directing dried and heated air into contact with the laundry via conduit means provided with heater elements and opening through a top wall of the tub adjacent a front wall of the drum, the heated and moist air being discharged from the tub through a further opening thereof, wherein the hot air flow exiting from the opening in the top wall of the tub is directed into the interior of the tub by deflector means effective to devide the major part of the air flow into a first flow directed towards through-openings formed in the front wall of the drum, and a second flow directed towards the upper boundary of the front-loading opening of the drum, the remaining part of the hot air flow being permitted to diffuse between the tub and the drum.
  • a combined laundry washing and drying machine has an outer housing 3 enclosing a tub 4 provided with a counterweight 5 and having a front opening 6 aligned with a front opening 7 of housing 3 and connected thereto by a bellows-type seal 8.
  • drum 9 Mounted in tub 4 for rotation about a horizontal axis is a drum 9 having a cylindrical outer wall 10 formed with through-openings 13, a front wall 11 and a rear wall 12, as well as per se known and therefore not described ledge elements for entraining the laundry.
  • Drum 9 is adapted to be rotated by an electric motor and a per se known and therefore not shown belt transmission, and is formed with a front loading opening 14 aligned with front openings 6 and 7 of tub 4 and housing 3, respectively.
  • Front opening 7 of housing 3 is provided with a door 15 made of a transparent material such as glass or plastics and hinged to housing 3.
  • Laundering tub 4 has a bottom opening 16 connected via a conduit 17 and a filtering device 18 to a discharge pump 19 and a conduit 20 for discharging the washing liquid from the machine at the end of the washing and rinsing cycles.
  • the machine according to the invention is adapted to carry out in a per se known manner a laundering process by immersion of the laundry, or a washing process by spraying the laundry with a reduced amount of a continuously recirculated washing liquid.
  • filtering device 18 is connected via a conduit 21, a collecting receptacle 22 and a recirculation pump 23 to a conduit 24 extending through a top wall of tub 4 for spraying the laundry contained in drum 9 with jets of the washing liquid.
  • the machine according to the invention also includes a forced air-flow drying system in which heated air is caused to flow through drum 9 with the moist laundry contained therein, the air being subsequently dehumidified and recirculated.
  • a fan 25 having its intake connected to a rear opening 26 of tub 4 via a water-cooled condenser device 27, the outlet side of fan 25 being connected to a top opening 28 of tub 4 via a conduit 29 containing electric resistance heater elements 30.
  • Condenser device 27 is of a known type and connected via a conduit 31 and a solenoid valve 32 to the water supply mains for supplying the water required for cooling condenser device 27 via conduit 31 and an associated spray nozzle 33.
  • the heated drying air exiting from top opening 28 of tub 4 is subsequently directed towards drum 9 for entraining the moisture from the laundry contained therein.
  • the flow path of the heated drying air exiting from opening 28 is not defined as in known machines by hermetically sealed conduit means, but is advantageously established by a suitable design of already existing components immediately required for the operation of the machine.
  • a first deflector lip 34 of adequate rigidity is integrally formed with a seal 35 disposed between conduit 29 and tub 4 so as to deflect the hot air flow towards the front wall 36 of tub 4 as indicated by arrows.
  • front wall 36 of tub 4 is formed with a recess 37 adapted to receive the hot air provenient from deflector lip 34 and to direct a first hot air flow towards front wall 11 of drum 9 suitably formed with through-openings 38.
  • the hot drying air bypassing openings 38 approaches the upper boundary of front opening 14 of drum 9 and is deflected into drum 9 by a second deflector lip 39 of adequate rigidity integrally formed with the upper half of bellows-type seal 8.
  • Second deflector lip 39 thus directs a second hot air flow towards the center of the laundry charge contained in drum 9.
  • second deflector lip 39 The advantages arising from the shape and positioning of second deflector lip 39 are mainly due to the fact that the hot air flow deflected thereby is capable of diffusing in the interior of drum 9 so as to sweep the greatest possible surface area of the laundry, and not only a small proportion thereof.
  • Second deflector lip 39 has the further advantageous effect of protecting bellows-type seal 8 and door 15 from direct contact with the hot air, so that specifically door 15 is prevented from becoming heated to a temperature at which the laundry might be singed or the user might sustain burns on contact therewith.
  • Deflector lips 34 and 39 may of course be formed in a different manner, for instance by extending and suitably shaping the top wall and front wall 36 of tub 4, or even by the employ of separate components.
  • the hot air flows deflected by recess 37 and deflector lip 39 are directly received by the moist laundry charge to result in a successive movement of the hot and moist air from the interior to the exterior of drum 9.
  • the indispensable conditions are thus established for obtaining a good result of the drying process, by ensuring that the hot air sweeps the greatest possible surface area of the laundry and the hot and moist air is caused to move from the interior to the exterior of drum 9.
  • the program of laundry washing and drying machines operating on the recirculation principle including spraying the laundry with the washing liquid provides for the execution of one or more spin-drying steps during the washing cycle. This may lead to the formation of substantial amounts of foam capable of entering and thereby obturating the drying air supply conduit.
  • a further advantageous aspect of the machine according to the invention is therefore the provision of an anti-foam feature obtained by suitable subdividing the output of recirculation conduit 24 (fig. 1).
  • recirculation conduit 24 is provided with a first and a second soray nozzle 40 and 41, respectively, for spraying the washing liquid onto cylindrical wall 10 of drum 9 and towards hot air entrance opening 28, respectively.
  • First nozzle 40 is effective in a per se known manner to spray the washing liquid onto the laundry through perforations 13 of drum 9, while second nozzle 41 acts to abate the foam formed during the spin-drying steps for maintaining the hot air supply passage between drum 9 and tub 4 free of obturation.
  • the described laundry washing and drying machine may of course be provided with any of the operating and control elements (program control unit, thermostats, pressure switches etc.) usually employed in machines of this type and therefore not requiring any specific description.
  • the machine according to the invention may also be modified, be it with regard to the arrangement of its functional elements, such as fan 25 or condenser 27, or with regard to the construction of the drying circuit, which may be of the condenser-equipped closed type or of the ambient-air open type, without thereby leaving the scope of protection of the characteristics described and claimed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (3)

  1. Machine combinée à laver et sécher le linge, notamment du type à chargement frontal et pour usage domestique, comprenant une cuve dans laquelle un tambour adapté pour contenir le linge lors du cycle de lavage ainsi que lors du cycle de séchage, est monté pour tourner autour d'un axe horizontal , un circuit de circulation d'air de séchage comprenant un ventilateur pour diriger l'air sec et chaud en contact avec le linge par l'intermédiaire de conduits équipés d'éléments chauffants et d' une ouverture à travers la paroi supérieure de la cuve adjacente à la paroi fron-tale du tambour, l'air chaud et humide étant évacué de la cuve à travers une autre ouverture dans celle-ci, carac-térisée en ce que le courant d'air de séchage chaud sortant de l'ouverture (28) dans la paroi supérieure de la cuve (4) est dirigé dans l'intérieur de la cuve (4) par des déflecteurs (34,37,39) servant à diviser la majeure partie de ce courant d'air en un premier courant dirigé à travers des ouvertures traversantes (38) formées dans la paroi frontale (11) du tambour (9), et un deuxième courant dirigé vers le bord supérieur de l'ouverture de chargement frontal (14) du tambour (9), la partie résiduelle de l'air chaud pouvant diffuser entre la cuve (4) et le tambour (9).
  2. Machine selon la revendication 1, caractérisée en ce que les déflecteurs (34,37,39) comportent un premier déflecteur (34) disposé adjacent à l'ouverture (28) dans la paroi supérieure de la cuve (4) et adapté pour dévier le courant d'air chaud en direction de la paroi frontale (36) de la cuve (4), un évidement (37) formé dans la paroi frontale (36) de la cuve (4) et adapté pour recevoir le courant d'air chaud provenant du premier déflecteur (34) et pour diriger ce premier courant d'air vers la paroi frontale (11) du tambour (9) comportant les ouvertures traversantes (38), et un deuxième déflecteur (39) formé adjacent à la moitié supérieure d'une garniture d'étanchéité de l'ouverture de chargement du type à soufflet (8) et adapté pour recevoir l'air chaud ne pénétrant pas dans les ouvertures (38) du tambour (9) pour diriger ce deuxième courant d'air chaud vers le côté supérieur de cette ouver-ture frontale (14) du tambour (9).
  3. Machine selon les revendications 1 et 2, comprenant un système de recyclage pour recycler le liquide de lavage depuis une portion inférieure de la cuve jusqu'à une portion supérieure de celle-ci pour pulvériser ainsi sur le linge une quantité réduite de ce liquide de lavage, caractérisée en ce qu'un conduit (24) pour le recyclage du liquide de lavage en direction de la portion supérieure de la cuve (4) se divise en une première branche et une deuxième branche équipées respectivement d'une première buse de pulvérisation (40) dirigée sur la paroi extérieure cylin-drique (10) du tambour (9) et une deuxième buse de pulvéri-sation (41) dirigée vers l'ouverture d'entrée de l'air chaud (28) pour maintenir à l'état non-obstrué le trajet de circulation de l'air de séchage chaud entre l'ouverture d'entrée (28) et l'ouverture frontale (14) du tambour (9).
EP87108385A 1986-07-11 1987-06-10 Machine combinée à laver et à sécher le linge Expired - Lifetime EP0252323B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT45736/86A IT1201780B (it) 1986-07-11 1986-07-11 Macchina combinata per il lavaggio e l'asciugatura della biancheria
IT4573686 1986-07-11

Publications (3)

Publication Number Publication Date
EP0252323A2 EP0252323A2 (fr) 1988-01-13
EP0252323A3 EP0252323A3 (en) 1988-07-06
EP0252323B1 true EP0252323B1 (fr) 1991-03-20

Family

ID=11257918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108385A Expired - Lifetime EP0252323B1 (fr) 1986-07-11 1987-06-10 Machine combinée à laver et à sécher le linge

Country Status (4)

Country Link
EP (1) EP0252323B1 (fr)
DE (1) DE3768722D1 (fr)
ES (1) ES2020963B3 (fr)
IT (1) IT1201780B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG111277A1 (en) * 2003-10-23 2005-05-30 Matsushita Electric Ind Co Ltd Drum type washing and drying machine
WO2017186164A1 (fr) * 2016-04-29 2017-11-02 青岛海尔滚筒洗衣机有限公司 Tampon de fenêtre de machine à laver et machine à laver
WO2023036613A1 (fr) * 2021-09-09 2023-03-16 BSH Hausgeräte GmbH Laveuse sécheuse du type à tambour et joint de celle-ci

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT218167Z2 (it) * 1988-05-30 1992-04-08 Zanussi A Spa Industrie Dispositivo di riscaldamento per macchina combinata per il lavaggio e l'asciugatura della biancheria.
IT1233060B (it) * 1989-01-25 1992-03-14 Indesit Macchina lavatrice ed asciugatrice perfezionata per biancheria
JPH02297399A (ja) * 1989-03-27 1990-12-07 Hitachi Ltd 乾燥機および洗濯兼乾燥機
IT1239195B (it) * 1990-04-18 1993-09-28 Zanussi Elettrodomestici Dispositivo di controllo per macchine combinate per il lavassio e l'asciugatura della biancheria
DE4104760A1 (de) * 1991-02-15 1992-08-20 Bosch Siemens Hausgeraete Zum trocknen eingerichtete haushalt-waschmaschine
ITPN20010070A1 (it) * 2001-10-10 2003-04-10 Electrolux Zanussi Elettrodome Macchina lavatrice-asciugatrice di biancheria
US20050138973A1 (en) 2003-12-18 2005-06-30 Lg Electronics Inc. Washing machine with drying function
KR20050101660A (ko) * 2004-04-19 2005-10-25 엘지전자 주식회사 건조겸용 드럼세탁기
KR100743707B1 (ko) 2005-02-03 2007-07-30 엘지전자 주식회사 건조 장치가 구비된 터브 일체형 드럼 세탁기
JP2008125832A (ja) * 2006-11-21 2008-06-05 Sanyo Electric Co Ltd ランドリー機器
EP2019164B1 (fr) * 2007-07-26 2011-05-25 Candy S.p.A. Machine lavante/séchante
EP2241663B1 (fr) * 2009-04-15 2013-03-20 Electrolux Home Products Corporation N.V. Machine à laver et sècher le linge et son procédé de fonctionnement
JP5567978B2 (ja) * 2010-10-21 2014-08-06 パナソニック株式会社 衣類乾燥機および洗濯乾燥機
EP2570544A1 (fr) * 2011-09-15 2013-03-20 Electrolux Home Products Corporation N.V. Machine à laver
JP6626796B2 (ja) * 2016-07-28 2019-12-25 日立グローバルライフソリューションズ株式会社 ドラム式洗濯乾燥機
CN113981659A (zh) * 2021-11-16 2022-01-28 江苏海狮机械股份有限公司 一种洗脱烘一体机中的密封装置
DE102022203313A1 (de) 2022-04-04 2023-10-05 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Pumpe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813843C (de) * 1950-03-28 1951-09-17 Poensgen A G Maschinenfabrik G Trockenvorrichtung fuer Waesche o. dgl.
US3006176A (en) * 1960-06-03 1961-10-31 Borg Warner Combination washer-dryer
NL278336A (fr) * 1961-05-11
DE1585675A1 (de) * 1967-12-29 1970-12-03 Constructa Werke Gmbh Trommelwaschmaschine mit Trocknungseinrichtung
DE2306873A1 (de) * 1973-02-13 1974-08-22 Licentia Gmbh Trommel fuer waeschebehandlungsmaschinen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG111277A1 (en) * 2003-10-23 2005-05-30 Matsushita Electric Ind Co Ltd Drum type washing and drying machine
WO2017186164A1 (fr) * 2016-04-29 2017-11-02 青岛海尔滚筒洗衣机有限公司 Tampon de fenêtre de machine à laver et machine à laver
CN107326620A (zh) * 2016-04-29 2017-11-07 青岛海尔滚筒洗衣机有限公司 一种洗衣机窗垫及洗衣机
CN107326620B (zh) * 2016-04-29 2020-04-24 青岛海尔滚筒洗衣机有限公司 一种洗衣机窗垫及洗衣机
WO2023036613A1 (fr) * 2021-09-09 2023-03-16 BSH Hausgeräte GmbH Laveuse sécheuse du type à tambour et joint de celle-ci

Also Published As

Publication number Publication date
IT1201780B (it) 1989-02-02
EP0252323A2 (fr) 1988-01-13
DE3768722D1 (de) 1991-04-25
ES2020963B3 (es) 1991-10-16
IT8645736A0 (it) 1986-07-11
EP0252323A3 (en) 1988-07-06

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