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WO2010012357A1 - Lave-linge sèche-linge avec condenseur intégré pour le groupe de lavage - Google Patents

Lave-linge sèche-linge avec condenseur intégré pour le groupe de lavage Download PDF

Info

Publication number
WO2010012357A1
WO2010012357A1 PCT/EP2009/004934 EP2009004934W WO2010012357A1 WO 2010012357 A1 WO2010012357 A1 WO 2010012357A1 EP 2009004934 W EP2009004934 W EP 2009004934W WO 2010012357 A1 WO2010012357 A1 WO 2010012357A1
Authority
WO
WIPO (PCT)
Prior art keywords
condenser
water
drying
tub
machine according
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.)
Ceased
Application number
PCT/EP2009/004934
Other languages
English (en)
Inventor
Silvano Cimetta
Roberto Mazzocco
Paolo Olivaro
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Publication of WO2010012357A1 publication Critical patent/WO2010012357A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 
    • D06F58/24—Condensing 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents

Definitions

  • the present invention relates to an improved, preferably household combined washing-drying machine, provided with a condenser for the condensation of the moisture collected by a hot air-flow which crosses the washing drum and therefore takes the moisture away from the wet clothes which are contained in said drum.
  • Combined laundry washing and drying machines provided with a condenser for the drying air, are well known; in said machines the hot drying air is made to circulate in a closed loop across the drum in which the laundry to be washed and dried is contained.
  • Said machines are generally represented in the patents EP 1 302 586 and EP 1 199 397; they are generally produced as a conventional washing machine, provided with a tub, a drum rotating inside it, a detergent drawer to contain the detergent and other substances used for the washing, a conduit, comprising a siphon, which allows a flow of water which carries with it said detergent/substances from said drawer into said tub, and further operating and control devices which are generally known in se.
  • said machine is added also with a hot drying air path comprising a condenser with a suction mouth which opens on the tub side wall, and a fan which sucks the air from said condenser and which blows it in a proper heating unit, wherefrom the air-flow is again being introduced into the drum, generally across the same opening for the laundry loading.
  • Such additional water circuit obviously requires at least a proper water supply conduit and a related electro-valve with the relevant man-hour costs for the mounting operations; such additional costs appear to be particularly burdensome, as in the facts said machine must include also the devices which are used in the washing cycles only, i.e. the siphon conduit conveying the water from the detergent drawer down into the tub, and the electro-valves to control the water flow from the mains into the detergent drawer.
  • Fig. 1 is a schematic view of the water circuit and of the drying air-flow path of a combined washing and drying machine according to the prior art
  • Fig. 2 is view similar to the fig. 1 view, but describing a combined machine according to the instant invention
  • Fig. 3 is an outer view of the rear side of the tub in a combined washing and drying machine according to the invention
  • FIG. 4 show a simplified and symbolic view of an improved operating mode of a machine according to the invention.
  • a combined washing and drying machine according to the prior art comprises:
  • a detergent drawer 2 wherein various compartments are defined for pouring and storing the detergent and further substances to be introduced into said tub during the washing and drying process
  • a channel 7 conveying said air flow, going out from said condenser, to a proper fan 8, wherefrom said air-flow is being blown into a container 9 lodging one or more electric heating resistors, not shown,
  • conduit connecting the detergent drawer to the tub, and which is normally provided with a siphon, and the small pipe injecting water into said condenser which according to the prior art are two separate devices, are instead here unified as a single conduit 10, which:
  • said single conduit 10 is also able of supplying a water flow for the condensation process into the condenser 6 in a fully controllable way, as ruled by the electro-valve 4.
  • the specific selected embodiment allows o a first but essential improvement: in the facts during a washing cycle the fan 8 is activated into sucking at a proper speed so as the water flow which runs inside the condenser 6, as soon as poured from said single conduit 10, is hindered by the air-flow drawn by the fan; caused by said opposition between the water flow, which goes down, and the air flow which goes up, the water flow is turned into a spray of very small drops licking the condenser upper portion, downstream said intermediate position 11.
  • the second improvement consists in placing said suction mouth 5 in the tub lower portion, in orienting the condenser 6 vertically and upwards, in determining said intermediate admitting position 11 of the conduit 10 in an upper portion of the condenser, so that the water flow by gravity goes out from the conduit 10 into the condenser 6 licking and washing most of its inner wall.
  • the third improvement consists in forming said single conduit 10 with a shape and orientation continuously descending towards the condenser 6; so the siphon is spared, as during the drying process the produced steam, which in the prior art machines escaped from the tub even through the path running across the conduit for the water loading and the detergent drawer, in the instant invention is practically intercepted and condensed inside the condenser; therefore the small part of the steam flow which is not condensed is automatically drawn by the fan.
  • the fourth improvement consists in that during the drying cycle, and while the water is injected into the condenser 6, the fan 8 is activated at two different rotation speeds, wherein a first and lower speed, which can also be zero, i.e.
  • a fifth improvement consists in that these two different rotating speeds are activated in alternate way and with a changing frequency which has to be high enough, so as to allow the fan to be only a little involved by the air- and water- flow.
  • a sixth improvement regards the initial time interval of a drying cycle; in the facts in said initial interval the laundry load is very wet and still quit cold; therefore in such a tome interval the moisture taken from the laundry is still very low, and so there is no need to circulate an high amount of drying air flow.
  • the improvement consists in that, during said initial time interval, said fan 8 is made to operate at a properly reduced speed, what obviously generates a corresponding energy saving, without however suffering a remarkable worsening of the drying performances.
  • a seventh improvement is closely linked to the previous one; in the facts said decrease in the fan 8 rotating speed during the starting drying step is not implemented in the same way for any kind of laundry load, but it is adjusted, as "tylored", for any specific kind of laundry, in order to further optimize the energy saving.
  • the eighth improvement consists in that said machine, in order to let the water into said drawer 2, wherefrom it is poured by gravity into the single conduit 10, uses the same means employed to pour the water into the drawer 2 during a washing cycle, and particularly use the same valve 4 and the same water conduit 3 which from the water mains leads to said valve 4.
  • the optimum condenser shape is that one of a sickle, with the suction mouth 5 placed on the bottom and with the upper end placed in correspondence to the tub upper part; moreover said "sickle" shape and the size of the condenser must be such as to conform and follow the outer circular profile of the tub itself.
  • said intermediate admitting position 11 of the conduit 10 is selected and pick in the condenser 6 upper position; in the facts, said position 11 provides both a proper length of the condenser working stretch, and the possibility of orienting vertically said useful length of the condenser, what is essential to assure an actual counter-current effect between the sprayed water flow coming from said conduit 10, and the drying air flow sucked by the fan and coming from the tub across said suction mouth 5.
  • a further improvement refers a specific machine working mode; to this regard it is remembered that for most of the users it is more and more appreciated and preferred the possibility of making the machine to work also during the night time; in the facts in such a time period the energy cost is less, and moreover during this time period it is normal that the user is at home, while it is not always true in the day time.
  • Such possibility preferably when associated to a reduced power supply on the heating resistors, causes the machine overall working at a generally reduced rate, and especially at a low fan speed; as a matter of facts it is known that the machine noise when it works as a dryer, is mainly caused by the fan and by the drying air flow.
  • a specific "night cycle" cycle program is designed and implemented, wherein the machine working is generally reduced and slowed-down, and which comprises not only a fan speed reduction, but in the case and also a drum rotation speed slowing down, and a decrease of the average power supplied on the heating resistors; such possibility may be given either by a reduction of the power supply voltage, or by a fully rated but intermittent power supply voltage, with a suitable and pre-selectable duty-cycle.

Landscapes

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

Abstract

L'invention porte sur une machine de lavage et de séchage de linge combinée, comprenant un tambour rotatif, une cuve contenant ledit tambour, un tiroir de détergent, des premiers conduits d'eau commandés par des électrovannes respectives et aptes à transporter dans ledit tiroir de détergent un écoulement liquide régulé à partir de l'arrivée d'eau publique, des seconds conduits d'eau aptes à transporter ladite eau dudit tiroir dans ladite cuve, un trajet de séchage à l'air comprenant, reliés en série et connectés les uns aux autres, une embouchure d'aspiration apte à l'admission d'air et d'eau et ouverte dans la partie inférieure de ladite cuve, un condenseur pour la condensation de l'humidité à partir du courant d'air traversant celui-ci, un canal transportant ledit courant d'air à la sortie dudit condenseur vers un ventilateur approprié, des moyens d'admission d'eau aptes à introduire un écoulement d'eau dans ledit condenseur, ladite eau étant apte à servir de moyen de refroidissement pour la condensation, lesdits seconds conduits d'eau comprenant un conduit unique apte à transporter ledit écoulement d'eau dudit tiroir de détergent directement dans ledit condenseur; ils s'étendent à partir de ladite embouchure d'aspiration sensiblement vers le haut, de telle sorte que ladite embouchure d'aspiration forme l'extrémité inférieure dudit condenseur, et que l'ouverture d'admission dudit conduit unique dans ledit condenseur est disposée dans une position intermédiaire dans la partie supérieure dudit condenseur; de préférence, ledit conduit unique descend de façon continue dudit tiroir de détergent vers ledit condenseur. Durant au moins un intervalle de temps du cycle de séchage, ledit ventilateur est actionné à au moins deux vitesses de rotation différentes, l'une permettant à une partie de l'eau (B), introduite dans ledit condenseur à partir dudit conduit unique, d'être entraînée vers la partie dudit condenseur en aval de ladite position intermédiaire dudit condenseur.
PCT/EP2009/004934 2008-08-01 2009-07-08 Lave-linge sèche-linge avec condenseur intégré pour le groupe de lavage Ceased WO2010012357A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08104942.1A EP2149635B1 (fr) 2008-08-01 2008-08-01 Machine à laver sèche-linge dotée d'un condensateur intégré au groupe de lavage
EP08104942.1 2008-08-01

Publications (1)

Publication Number Publication Date
WO2010012357A1 true WO2010012357A1 (fr) 2010-02-04

Family

ID=40246713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/004934 Ceased WO2010012357A1 (fr) 2008-08-01 2009-07-08 Lave-linge sèche-linge avec condenseur intégré pour le groupe de lavage

Country Status (3)

Country Link
EP (1) EP2149635B1 (fr)
RU (1) RU2517009C2 (fr)
WO (1) WO2010012357A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220299211A1 (en) * 2021-03-18 2022-09-22 Alto-Shaam, Inc. Oven Providing Surge Mode Cleaning

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412861B1 (fr) 2010-07-30 2013-03-13 Electrolux Home Products Corporation N.V. Machine à laver et sécher le linge
ITPR20120005U1 (it) * 2012-10-08 2014-04-09 Indesit Co Spa Elettrodomestico di lavaggio e asciugatura di panni.
US12055909B2 (en) 2021-07-02 2024-08-06 Whirlpool Corporation Night cycle algorithm for a laundry appliance to minimize operational noise

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4012172A1 (de) * 1990-03-21 1991-12-05 Licentia Gmbh Programmgesteuerter waschtrockner
EP0499029A1 (fr) * 1991-02-15 1992-08-19 Bosch-Siemens HausgerÀ¤te GmbH Machine à laver domestique équipée pour sécher
GB2291891A (en) * 1994-10-13 1996-02-07 Bosch Siemens Hausgeraete Washing machine equipped for drying

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPN20000062A1 (it) 2000-10-16 2002-04-16 Electrolux Zanussi Elettrodome Macchina asciugabiancheria perfezionata
ITPN20010070A1 (it) 2001-10-10 2003-04-10 Electrolux Zanussi Elettrodome Macchina lavatrice-asciugatrice di biancheria
KR20060097210A (ko) * 2005-03-04 2006-09-14 삼성전자주식회사 세탁기 및 그 거품제거방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4012172A1 (de) * 1990-03-21 1991-12-05 Licentia Gmbh Programmgesteuerter waschtrockner
EP0499029A1 (fr) * 1991-02-15 1992-08-19 Bosch-Siemens HausgerÀ¤te GmbH Machine à laver domestique équipée pour sécher
GB2291891A (en) * 1994-10-13 1996-02-07 Bosch Siemens Hausgeraete Washing machine equipped for drying

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220299211A1 (en) * 2021-03-18 2022-09-22 Alto-Shaam, Inc. Oven Providing Surge Mode Cleaning
US11713885B2 (en) * 2021-03-18 2023-08-01 Alto-Shaam, Inc. Oven providing surge mode cleaning

Also Published As

Publication number Publication date
RU2517009C2 (ru) 2014-05-27
EP2149635A1 (fr) 2010-02-03
RU2009129555A (ru) 2011-02-10
EP2149635B1 (fr) 2013-11-27

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