EP3077587B1 - Lave-linge et sèche-linge ménager - Google Patents

Lave-linge et sèche-linge ménager Download PDF

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Publication number
EP3077587B1
EP3077587B1 EP14828527.3A EP14828527A EP3077587B1 EP 3077587 B1 EP3077587 B1 EP 3077587B1 EP 14828527 A EP14828527 A EP 14828527A EP 3077587 B1 EP3077587 B1 EP 3077587B1
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EP
European Patent Office
Prior art keywords
water
washing
drying
branch
tub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14828527.3A
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German (de)
English (en)
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EP3077587A1 (fr
Inventor
Mauro MANCINI
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.)
Whirlpool EMEA SpA
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Whirlpool EMEA SpA
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Application filed by Whirlpool EMEA SpA filed Critical Whirlpool EMEA SpA
Publication of EP3077587A1 publication Critical patent/EP3077587A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a household appliance for washing and drying laundry or other items in general.
  • washing and drying cycles are carried out, e.g. dishwashers.
  • washing/drying machines are washing machines that can dry the load at the end of the wash cycle.
  • they are equipped with a drying air circulation circuit, wherein heated air is made to lap the humid laundry in the drum of the machine, thereby drying it.
  • the air saturated with aqueous vapour is also a cause of efficiency losses in the ventilation system and in the heating system, which typically includes electric resistors.
  • one possible solution is to draw off some water from the washing circuit and introduce it in countercurrent against the air flow, so that the steam present in the latter will coalesce with the cold water and can be removed along with it, to be then drained through the tub bottom.
  • the air is dehumidified as it flows through a heat exchanger, where it is cooled: the steam condenses in the exchanger, and the condensed water collected and drained.
  • Air cooling is obtained in the exchanger by causing the air to exchange heat with water coming from the washing circuit of the washing/drying machine;
  • the exchanger may be of the plate type, of the finned battery type, or of any other type suitable for air-water thermal exchange.
  • Controlling the water coming from the washing circuit in order to dehumidify the air as explained above requires the presence of further valves and ducts adding up to those that are strictly necessary for a simple washing machine, inevitably leading to a more complex washing/drying machine.
  • the water is often used also for other functions such as, for example, cleaning filters or the dehumidification condenser; it can thus be easily understood that it is important, in machines for washing and drying laundry or the like, to reduce the number of water valves and/or ducts required for such functions.
  • European patent application EP1302586A1 discloses a combined clothes washing and drying machine, possibly of the recirculating type, comprising a tub, a rotating drum holding the clothes to be washed, and supplied with water from the mains via electromagnetic valves, a detergent/additive dispenser and a conduit provided with a siphon, said tub being connected to a circuit comprising a condenser, air circulating means and means for heating the drying air.
  • the condenser is connected to the tub of the machine through a further circuit comprising a pump, for the water needed to cool the condenser.
  • the circuit for the condenser cooling water is connected downstream of the lint filter of the machine.
  • the cooling water for the condenser is supplied into the tub via said electromagnetic valves, at least one of which is energized recurrently.
  • European patent application EP1584729A1 discloses a washing-drying machine having a three-way valve mounted to a circulating hose downstream of the washing tub and connected to a drain hose, for supplying cooling water to a condensing duct or for conveying the cooling water to the outside.
  • German patent application DE4212965A1 discloses a clothes dryer having a three-way valve connected to a condensation water tank, to spray nozzles arranged above filter elements and to a drain pipe.
  • International patent application WO2009/058121A1 discloses a washer having a recirculation line leading to a point just downstream of a valve connected to the city water supply.
  • the technical problem underlying the present invention is to provide a household appliance for washing and drying a load in general, having such structural and operating characteristics as to allow a simplex management of the washing water, for carrying out a plurality of functions.
  • the principle for solving this problem is to exploit the same components for multiple functions, so that their number can be reduced without affecting the machine's performances.
  • a household appliance for washing and drying a load according to claim 1 is defined.
  • reference numeral 1 designates as a whole a tub of a washing/drying machine in accordance with the invention.
  • FIG. 1 For easy understanding, the drawings show the tub 1 without the external cabinet of the washing/drying machine; it is nevertheless apparent that, in the complete version of the household appliance, said tub 1 is inserted into a cabinet or housing structure, in a per se known manner.
  • the tub 1 is of the horizontal-axis type and has a front opening 2 for loading laundry into a rotary drum in the tub's inner cylindrical chamber.
  • the washing/drying machine comprises a motor 6 for rotating the drum, to which it is connected by means of a drive belt 7; of course, any other solution suitable for driving the drum could be used for the purposes of the invention.
  • the drying air circuit comprises an air delivery channel 10 extending from a base 11 that houses an impeller (not shown in the drawings and per se known) to a mouth 12 for supplying the air into the inner chamber of the tub 1.
  • the air circulation circuit further comprises an intake channel 13 upstream of the impeller, which channel is arranged in the rear portion of the tub and extends from the condenser 14 to the base 11 that houses the impeller.
  • the washing water distribution circuit comprises two valves 20, 21 that control the main functions thereof.
  • valves 20 and 21 are electrically controlled by the control system of the household appliance, and are connected upstream to the water supply network where the washing/drying 1 is installed, which is not shown in the drawings because it is per se known, since it is the typical water main commonly found in civil buildings.
  • the electrovalves 20, 21 are connected to the water distribution circuit in the washing/drying machine, which comprises two branches 22, 23: the first branch is used for the laundry washing cycle, while the second one is used for the laundry drying cycle.
  • the second water distribution branch 23 is used for conveying the water to the condenser 14, where the drying air is dehumidified.
  • the water distributed by the electrovalves 20, 21 flows into a fitting 29 formed in a tube bundle 30 that, in accordance with a preferred embodiment of the invention, consists of a moulded piece preferably made from plastic material, arranged next to the washing tub 1.
  • the water that flows into the tube bundle 30 is delivered to the condenser 14 to cool the air circulating in the drying circuit, or is used for cleaning the exchanger during the washing step.
  • Such cleaning is carried out by delivering washing water through the exchanger 14, where air to be dehumidified normally flows.
  • the exchanger 14 is washed by means of water flowing in countercurrent against the air flow, which water is then drained, possibly after having been treated in a filter 32 for removing fibers and lint.
  • a diverter 34 which conveys the flow supplied by the pump 33 either towards said branches or towards the drain.
  • the diverter consists of a valve with three or more ways, even though any other solution suitable for this purpose can be employed.
  • the presence of the diverter 34 is advantageous for recirculating the water into the two branches 22, 23 of the distribution circuit from the washing tub. Should recirculation not be provided, as in the variant of Figure 7 , which shows a diagram of a household appliance not falling within the scope of independent claim 1, the water, downstream of the washing tub 1, is drained by the pump 33 instead of being recirculated into the two branches 22, 23 of the circuit as specified for the other solution ( Fig. 6 ).
  • the washing/drying machine according to the invention operates as follows.
  • the two valves direct the whole flow towards the detergent tank 26, from which the water flows into the duct 28 to reach the washing chamber 1.
  • the washing cycle comprises the usual operating steps of washing/drying machines, i.e. prewash, one or more wash steps followed by respective rinse steps, spin and, finally, drying.
  • valves 20, 21 deliver the water towards the washing branch 22 and/or towards the drying branch 23 of the distribution circuit; in fact, one characteristic of such valves is that they can partialize the water flow and distribute it into the circuit branches with variable flow rates, according to the different steps of the operating cycle.
  • the rinse water is reused, at least partly, for cleaning the exchanger 14.
  • the rinse water contained in the washing tub 1 can be recirculated by the pump 33 towards the electrovalve 21, from where it can be used for washing the condenser 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Detergent Compositions (AREA)

Claims (1)

  1. Appareil ménager de lavage et de séchage d'une charge, comprenant :
    une cuve de lavage (1) comprenant une chambre dans laquelle la charge à laver et séchée est placée ;
    un circuit de circulation d'air (10, 11, 13) conçu pour faire circuler l'air de séchage depuis et vers la chambre et comprenant un canal d'écoulement de sortie d'air de séchage (13) ;
    un condenseur (14) pour l'air de séchage ; et
    un circuit de distribution d'eau (22, 23) pour distribuer de l'eau depuis une conduite d'eau vers la cuve de lavage,
    le circuit de distribution d'eau comprenant au moins une paire de ramifications (22, 23),
    la distribution survenant dans de telles ramifications à l'aide d'une paire de soupapes (20, 21),
    une première ramification (22) du circuit de distribution d'eau comprenant un bac (26) pour les détergents et un conduit (28) pour le raccord à la chambre,
    une seconde ramification (23) du circuit de distribution d'eau étant raccordée au condenseur (14) et comprenant au moins une portion du canal d'écoulement de sortie d'air de séchage (13), la seconde ramification (23) étant utilisée pour transporter l'eau vers le condenseur (14), où l'air de séchage est déshumidifié,
    caractérisé en ce que le circuit de distribution d'eau (22, 23) en aval de la cuve de lavage (1) comprend en outre un déflecteur (34) et une pompe (33) pour pomper l'eau depuis la cuve (1) vers le déflecteur (34) qui transporte l'eau alimentée par la pompe (33) soit vers la première ramification (22), la seconde ramification (23) ou un drain,
    le déflecteur étant constitué d'une soupape ayant trois voies ou plus et
    une partie de la seconde ramification (23) du circuit de distribution d'eau étant mise en oeuvre dans un faisceau de tubes (30).
EP14828527.3A 2013-12-05 2014-12-01 Lave-linge et sèche-linge ménager Active EP3077587B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000999A ITTO20130999A1 (it) 2013-12-05 2013-12-05 Elettrodomestico di lavaggio e asciugatura
PCT/IB2014/066477 WO2015083061A1 (fr) 2013-12-05 2014-12-01 Lave-linge et sèche-linge ménager

Publications (2)

Publication Number Publication Date
EP3077587A1 EP3077587A1 (fr) 2016-10-12
EP3077587B1 true EP3077587B1 (fr) 2023-01-11

Family

ID=49958624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14828527.3A Active EP3077587B1 (fr) 2013-12-05 2014-12-01 Lave-linge et sèche-linge ménager

Country Status (3)

Country Link
EP (1) EP3077587B1 (fr)
IT (1) ITTO20130999A1 (fr)
WO (1) WO2015083061A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115029888A (zh) * 2021-03-05 2022-09-09 博西华电器（江苏）有限公司 衣物处理机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212965A1 (de) * 1992-04-18 1993-10-21 Bauknecht Hausgeraete Kondenswäschetrockner
EP1302586A1 (fr) * 2001-10-10 2003-04-16 Electrolux Home Products Corporation N.V. Machine combinée pour le lavage et le séchage du linge
EP1584729A1 (fr) * 2004-04-09 2005-10-12 Lg Electronics Inc. machine lave-linge séchante
WO2009058121A1 (fr) * 2006-11-06 2009-05-07 Su Heon Kim Procédé et appareil de machine à laver améliorée

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8507722D0 (en) * 1985-03-25 1985-05-01 Hotpoint Ltd Washing machines
KR100456953B1 (ko) * 2002-09-10 2004-11-10 삼성전자주식회사 건조장치를 갖춘 드럼세탁기
EP1577433B2 (fr) 2004-02-17 2015-11-25 LG Electronics, Inc. Procédé de commande d'une machine à laver à tambour
KR20060097210A (ko) * 2005-03-04 2006-09-14 삼성전자주식회사 세탁기 및 그 거품제거방법
CN201386213Y (zh) * 2008-12-29 2010-01-20 博西威家用电器有限公司 家用电器的进水阀系统
EP3192917A1 (fr) * 2012-04-06 2017-07-19 Lg Electronics Inc. Machine de traitement du linge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212965A1 (de) * 1992-04-18 1993-10-21 Bauknecht Hausgeraete Kondenswäschetrockner
EP1302586A1 (fr) * 2001-10-10 2003-04-16 Electrolux Home Products Corporation N.V. Machine combinée pour le lavage et le séchage du linge
EP1584729A1 (fr) * 2004-04-09 2005-10-12 Lg Electronics Inc. machine lave-linge séchante
WO2009058121A1 (fr) * 2006-11-06 2009-05-07 Su Heon Kim Procédé et appareil de machine à laver améliorée

Also Published As

Publication number Publication date
EP3077587A1 (fr) 2016-10-12
ITTO20130999A1 (it) 2015-06-06
WO2015083061A1 (fr) 2015-06-11

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