EP2344016B1 - Procédé et appareil pour transférer des agents de lavage dans une cuve de machine à laver - Google Patents

Procédé et appareil pour transférer des agents de lavage dans une cuve de machine à laver Download PDF

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Publication number
EP2344016B1
EP2344016B1 EP09736285.9A EP09736285A EP2344016B1 EP 2344016 B1 EP2344016 B1 EP 2344016B1 EP 09736285 A EP09736285 A EP 09736285A EP 2344016 B1 EP2344016 B1 EP 2344016B1
Authority
EP
European Patent Office
Prior art keywords
tub
inlet
washing
cross
fluid communication
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.)
Not-in-force
Application number
EP09736285.9A
Other languages
German (de)
English (en)
Other versions
EP2344016A1 (fr
Inventor
Costantino Mariotti
Giovanni Bombarideri
Daniele Rossi
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
Original Assignee
Indesit Co SpA
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Publication date
Application filed by Indesit Co SpA filed Critical Indesit Co SpA
Publication of EP2344016A1 publication Critical patent/EP2344016A1/fr
Application granted granted Critical
Publication of EP2344016B1 publication Critical patent/EP2344016B1/fr
Not-in-force 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
    • 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
    • D06F39/028—Arrangements for selectively supplying water to detergent compartments
    • 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

Definitions

  • the present invention relates to a method for conveying washing agents into a tub of a washing machine according to the preamble of the first claim.
  • washing machines such as laundry washing or washing/drying machines or the like, which are equipped with a rotary drum housed in a tub and containing laundry to be washed.
  • Such machines are connected to a water main pipe delivering clean water which enters the machine through a supply duct; clean water is normally also used for carrying two washing agents, e.g. detergent and softener, into the tub.
  • clean water is normally also used for carrying two washing agents, e.g. detergent and softener, into the tub.
  • the supply duct connected to the water main is split in two delivery ducts, each afferent to a respective container or drawer compartment and fitted with a valve allowing it to be individually opened or closed, so that two washing agents can be dispensed independently.
  • cross-jet devices In order to simplify the construction of the machine and limit the production cost thereof, supply devices having two inlets and three outlets, known as "cross-jet" devices, have been conceived, like the one described in patent GB 2353540 to AWECO Appliance System GmbH & CO. KG; in these devices, the three outlets can be supplied alternately depending on how the two inlets are being supplied.
  • a known cross-jet device 1 is also shown in the annexed Fig. 1 : said device 1 receives water from the main through supply duct 7 that branches off into two delivery ducts 2, 3, ending at respective inlets consisting of delivery mouths A, B; it should be noted that each delivery duct 2,3 is provided with a dedicated valve or solenoid valve 22, 23, so that it can be opened or closed.
  • a further object of the present invention is to provide a washing machine according to the appended claim 5.
  • the present invention is based upon the idea of using the circuit for recirculating the wash liquid contained in the tub (which may be either pure water or water mixed with a washing agent, according to the case) also for supplying one of the two inlet mouths of the cross-jet supply device.
  • washing machines are often equipped with recirculation circuits, like the ones described in patents DE 43 37 943 or DE 199 02 911 , both in the name of MIELE & CIE GmbH, and US 5,191,669 in the name of
  • the wash liquid contained in the tub is drawn, possibly filtered and then delivered again into the tub, e.g. by spraying it onto the laundry, without needing any additional clean water supply.
  • known machines are equipped with a pump adapted to circulate the wash liquid in the recirculation circuit; typically, the latter includes the pipes to and from the tub, and possibly also valves or switches and cleaning filters.
  • FIG. 2 and 5 there is shown a cross-jet supply device 1 with the respective hydraulic circuit in accordance with the teachings of the present invention.
  • FIGs. 2 and 5 illustrate a simple and low-cost solution of said circuit through a general diagram ( Fig. 2 ) and a schematic view of the arrangement of said circuit in washing machine 100 ( Fig. 5 ), i.e. a laundry washing or washing/drying machine.
  • Compartments 41, 42, 43 are in turn in fluid communication with tub 101 through a supply hopper 103 (per se known); the washing or washing/drying machine 100 normally also comprises a rotary drum 102 housed in the tub, in which the laundry is placed.
  • a supply hopper 103 per se known
  • the washing or washing/drying machine 100 normally also comprises a rotary drum 102 housed in the tub, in which the laundry is placed.
  • Figs. 2 and 5 also show pump 10, which is in fluid communication with tub 101 through suction duct 11; the outlet of said pump 10 is connected to delivery duct 3 ending in crossing chamber X of device 1, with second mouth B aligned with drain mouth D.
  • pump 10 and suction duct 11 advantageously consist of the recirculation pump and recirculation duct, respectively, of the washing machine.
  • Supply duct 7, intercepted by valve 22, is the second delivery duct 2 ending in crossing chamber X with first mouth A aligned with drain mouth C; third drain mouth E is visible between drain mouths C and D aligned with the respective delivery mouths A and B.
  • washing agents in drawer 43, they will be already swept along by the clean water flow during this initial step.
  • wash liquid which may be either pure water or water mixed with washing agents
  • pump 10 it is conceivable to use pump 10 in order to dispense a washing agent contained in compartment 42 or in compartment 41.
  • compartments 41 and 42 must necessarily be intended for washing agents to be used in operating steps of the machine to be executed after the tub filling step; for instance, compartments 41 and 42 are intended for a detergent and/or a softener, whereas compartment 43 may be used for a dye fixative or a detergent to be dispensed during the prewash step; advantageously, compartment 41 is assigned to detergent and compartment 42 is assigned to softener.
  • the wash liquid recirculation circuit to and from tub 101 also comprises device 1 and drawer 40; during the recirculation step of the machine, the wash liquid taken from the tub flows through both device 1 and drawer 40; more in detail, two types of recirculation are possible: mixed recirculation, where clean water is also used, and unmixed recirculation.
  • valve 22 In mixed recirculation mode, valve 22 is open and pump 10 is on: in this case, the flow of wash liquid taken from the tub is added to the flow of clean water supplied from the water main, and then this combined flow reaches the tub through compartment 42; this mode of operation may be used when the quantity of wash liquid in the tub is insufficient for the subsequent wash steps to be carried out by machine 100; the wash liquid recirculation circuit to/from tub 101 includes in this case suction duct 11, pump 10, delivery duct 3, delivery mouth B, chamber X, outlet mouth E, drain duct 5, compartment 42, and hopper 103.
  • valve 22 In unmixed recirculation mode, valve 22 is closed and pump 10 is on: in this case, the flow of wash liquid taken from the tub is wholly re-admitted into the tub (except for any liquid spilled or partialized by any means) through compartment 41; this mode of operation may be used when the quantity of wash liquid in the tub is sufficient for the subsequent wash steps to be carried out by machine 100; the wash liquid recirculation circuit to/from tub 101 includes in this case suction duct 11, pump 10, delivery duct 3, delivery mouth B, chamber X, outlet mouth D, drain duct 6, compartment 41, and hopper 103.
  • Pump 10 may be a normal recirculation pump, per se known, which will not be discussed any further.
  • a positive displacement pump will also stop the water flow when it is off, thus acting upon duct 11 just like a closed valve.
  • any one of the three outlets C, D, E can be supplied alternately as a function of the two inlets A, B, one of which is supplied with wash liquid from the tub of the washing machine and the other is supplied with clean water from the main.
  • the three compartments 41, 42, 43 of drawer 40 can be fed by using a minimal number of machine parts or components.
  • Pump 10' has two outlets which can be supplied as a function of the direction of rotation of the electric motor of the pump itself; pumps of this type are per se known and have been described, for example, in patent US 6,617,733 in the name of DAEWOO ELECTRONICS CO., LTD.
  • pump 10' is a dynamic impeller-type pump; depending on the direction of rotation of the electric motor that drives the impeller, the wash liquid coming in from suction duct 11 will be alternately delivered into either one of ducts 3 and 13.
  • pump 10' may be replaced with a different pump, e.g. a pump fitted with a flow diverter or a shutter adapted to partialize the output flow in order to direct a portion thereof into duct 3 and the other portion into duct 13.
  • a different pump e.g. a pump fitted with a flow diverter or a shutter adapted to partialize the output flow in order to direct a portion thereof into duct 3 and the other portion into duct 13.
  • Return duct 13 may also include a drain branch which can be opened by means of a dedicated valve (not shown).
  • washing agent contained in compartment 41 or 42 can be dispensed independently of recirculation, unlike the preceding case, where during the first recirculation step the washing agent contained in compartment 41 or 42 (depending on whether solenoid valve 21 is open or closed) is necessarily dispensed; it follows that, if on the one hand this solution implies the presence of a return duct 13 specifically intended for recirculation, on the other hand it offers more flexibility of use.
  • flow diverter 14 can also partialize the wash liquid flow so that device 1 and return duct 13 receive flows which can be adjusted at will by operating diverter 14; such a solution may be advantageous when the jets simultaneously emitted by mouths A and B are not capable of generating a single jet directed towards mouth E (e.g.
  • flow diverter 14 also acts as an element for adjusting and calibrating device 1, thus allowing to change the rate of the wash liquid flowing in one of the two inlets of device 1 for the purpose of obtaining an optimal operation of device 1.
  • compartments 41, 42, 43 for the three washing agents may more generally be three separate washing agent containers associated with or incorporated into other devices of the washing machine; for example, they may be integrated into the machine frame, arranged in a fixed position and filled from above, or else they may be containers internally or externally associated with the tub, e.g. arranged on the door that allows access to the tub and drum.
  • the three containers will be supplied by means of device 1 as previously described, being additionally necessary only to ensure that the three drain ducts 4, 5, 6 are afferent to the respective containers in fluid communication with tub 101.
  • cross-jet device 1 on top of drawer 4 is optional, since device 1 may also be installed in a remote position, at a distance from the drawer or containers.
  • four or more containers may of course be used and supplied alternately depending on the water flow carried by duct 3: in the above-described cross-jet device, in fact, the two input flows generate an output flow directed towards that outlet which is not aligned with the two inlets.
  • the resulting jet may not be directed in the middle, but at a variable angle dependent on the flow rate difference between the two jets, so that it may even supply a fourth outlet (not shown) afferent to a fourth container.
  • This reasoning may be extended to any number of outlets, provided that the flow rate can be adjusted with accuracy.
  • the flow rate may be adjusted by acting upon the pump, e.g. by increasing the revolution speed thereof, if it is a dynamic impeller-type pump, or else through flow diverter 14 as previously described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (10)

  1. Procédé pour alimenter alternativement une des au moins trois sorties (C, D, E) d'un dispositif de jets croisés (1) délivrant un liquide à au moins trois récipients d'agent de lavage (41, 42, 43) dans une machine à laver (100), notamment une machine à laver ou à laver/sécher le linge, lesdits au moins trois récipients (41, 42, 43) sont en communication fluidique avec une cuve de la machine à laver (100), et le dispositif à jets croisés (1) comprenant une chambre de croisement (X) dans laquelle une première et une seconde entrée (A, B) et au moins trois sorties (C, D, E) sont afférentes, lesquelles sorties (C, D, E) sont en communication fluidique avec lesdits au moins trois récipients (43, 41, 42) et peuvent être alimentées alternativement avec ledit liquide selon que l'une des entrées (A, B) ou les deux sont alimentées et ledit liquide alimentant la première entrée (A) est de l'eau propre provenant de la conduite d'eau principale,
    caractérisé en ce que
    le liquide alimentant la second entrée (B) est un liquide de lavage provenant de la cuve.
  2. Procédé selon la revendication 1, comprenant les étapes consistant à :
    - soutirer ledit liquide de lavage de la cuve
    - amener ledit liquide de lavage à la seconde entrée (B) dudit dispositif à jets croisés (1)
    - empêcher l'eau propre de parvenir à la première entrée (A) du dispositif à jets croisés (1)
    de manière à générer un jet dudit liquide de lavage qui parvient, sans interception, à une première desdites sorties (D) puis s'écoule vers un premier récipient d'agent de lavage (41), ce qui amène un agent de lavage contenu dans ledit premier récipient (41) dans la cuve (101) .
  3. Procédé selon la revendication 1, comprenant les étapes consistant à :
    - soutirer ledit liquide de lavage de la cuve
    - amener ledit liquide de lavage à la seconde entrée (B) dudit dispositif à jets croisés (1)
    - alimenter la première entrée (A) du dispositif à jet croisés (1) en eau propre
    de manière à générer un jet dudit liquide de lavage et un jet de ladite eau propre de façon à interférer l'un avec l'autre dans la chambre de croisement (X) pour former un seul jet dirigé vers une troisième desdites sorties (E), qui s'écoule ensuite vers un récipient d'agent de lavage (42) respectif, ce qui amène un agent de lavage contenu dans ledit récipient (42) dans la cuve (101).
  4. Procédé selon l'une quelconque des revendications précédentes, comprenant une étape consistant à partialiser l'écoulement dudit liquide de lavage avant de l'amener à ladite entrée (B).
  5. Machine à laver (100), en particulier machine à laver ou à laver/sécher le linge, du type comprenant une cuve (101) qui loge un tambour rotatif (102), la cuve (101) étant en communication fluidique avec au moins trois récipients d'agent de lavage (41, 42, 43), et comprenant en outre un dispositif à jets croisés (1) destiné à alimenter lesdits au moins trois récipients (41, 42, 43) en liquide, le dispositif à jets croisés (1) comprenant une chambre de croisement (X) dans laquelle une première et une seconde entrée (A, B) et au moins trois sorties (C, D, E) sont afférentes, lesquelles sorties (C, D, E) sont en communication fluidique avec lesdits au moins trois récipients (41, 42, 43) et peuvent être alimentés alternativement avec ledit liquide selon que l'une des entrées (A, B) ou les deux sont alimentées, la première entrée (A) du dispositif à jets croisés (1) étant en communication fluidique avec une conduite d'eau principale,
    caractérisé en ce que
    la seconde entrée (B) du dispositif à jets croisés (1) est en communication fluidique avec la cuve (101) de sorte que le liquide alimentant la seconde entrée (B) est un liquide de lavage provenant de la cuve.
  6. Machine à laver (100) selon la revendication 5, comprenant une pompe (10, 10') en communication fluidique avec la cuve (101) par le biais d'un conduit d'aspiration (11), ladite pompe (10, 10') étant en communication fluidique avec la seconde entrée (B) dudit dispositif à jets croisés (1).
  7. Machine à laver (100) selon la revendication 4 ou 5, comprenant un conduit d'alimentation (7) en communication fluidique avec une conduite d'eau principale et avec ladite première entrée (A), la section transversale dudit conduit d'alimentation (7) peut être fermée par une vanne (22).
  8. Machine à laver (100) selon une ou plusieurs des revendications 5 à 7, dans laquelle la pompe (10') est une pompe dynamique à double-sortie, comprenant également un conduit de retour (13) en communication fluidique avec la pompe dynamique à double sortie (10') et ladite cuve (101).
  9. Machine laver (100) selon une ou plusieurs des revendications 5 à 7, dans laquelle un déflecteur d'écoulement (14) est monté en aval de la pompe (10) et comporte également un conduit de retour (13) en communication fluidique avec ladite cuve (101), et dans laquelle le déflecteur d'écoulement (14) est en communication fluidique avec au moins la pompe (10), la seconde entrée (B) et le conduit de retour (13).
  10. Machine à laver (100) selon une ou plusieurs des revendications 5 à 9, dans laquelle le dispositif transversal d'alimentation à jets croisés (1) est placé au-dessus d'un tiroir (40) destiné à charger les agents de lavage et dans laquelle les trois récipients sont trois compartiments distincts dudit tiroir (40).
EP09736285.9A 2008-09-04 2009-08-28 Procédé et appareil pour transférer des agents de lavage dans une cuve de machine à laver Not-in-force EP2344016B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2008A000655A IT1391855B1 (it) 2008-09-04 2008-09-04 Metodo e dispositivo per convogliare agenti di lavaggio in una vasca di una macchina di lavaggio
PCT/IB2009/053766 WO2010026516A1 (fr) 2008-09-04 2009-08-28 Procédé et appareil pour transférer des agents de lavage dans une cuve de machine à laver

Publications (2)

Publication Number Publication Date
EP2344016A1 EP2344016A1 (fr) 2011-07-20
EP2344016B1 true EP2344016B1 (fr) 2016-06-15

Family

ID=40902876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09736285.9A Not-in-force EP2344016B1 (fr) 2008-09-04 2009-08-28 Procédé et appareil pour transférer des agents de lavage dans une cuve de machine à laver

Country Status (4)

Country Link
EP (1) EP2344016B1 (fr)
IT (1) IT1391855B1 (fr)
RU (1) RU2497435C2 (fr)
WO (1) WO2010026516A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4119718A1 (fr) 2021-07-13 2023-01-18 Whirlpool Corporation Machine à laver le linge équipée de moyens améliorés pour empêcher le reflux d'eau

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FR2959248B1 (fr) * 2010-04-21 2012-10-05 Fagorbrandt Sas Dispositif de distribution d'eau, notamment pour machine a laver le linge
US8850856B2 (en) 2010-12-16 2014-10-07 General Electric Company Apparatus and method for using a dispensing system utilizing a Venturi component
US9051676B2 (en) 2011-03-30 2015-06-09 General Electric Company Apparatus and method for utilizing a venturi effect in a dispenser
DE102011083297B3 (de) * 2011-09-23 2012-11-08 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät mit einer Dosierpumpe
EP2889418B1 (fr) * 2013-12-24 2016-09-21 Electrolux Appliances Aktiebolag Machine à laver
CN107663749B (zh) * 2016-07-29 2023-08-18 无锡小天鹅电器有限公司 洗衣机的自动投放系统和具有其的洗衣机
CN112301667B (zh) * 2019-08-02 2022-07-29 青岛海尔洗衣机有限公司 一种添加剂投放装置及洗衣机
EP4397801A3 (fr) 2019-08-29 2024-08-14 LG Electronics Inc. Tiroir
KR20210027021A (ko) * 2019-08-29 2021-03-10 엘지전자 주식회사 드로워 및 이를 포함하는 의류 처리 장치

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DE4447160A1 (de) * 1994-12-29 1996-07-04 Bosch Siemens Hausgeraete Waschmaschine mit einer Waschmittel-Einspüleinrichtung
DE19503589A1 (de) * 1995-02-03 1996-08-08 Bosch Siemens Hausgeraete Wasserzuführungs-Einrichtung für ein wasserführendes Haushaltgerät
DE19902911A1 (de) * 1998-03-17 1999-09-23 Miele & Cie Waschmaschine
JP4426049B2 (ja) 1999-03-31 2010-03-03 エドワーズ株式会社 磁気軸受装置及び真空ポンプ
DE10009293A1 (de) * 1999-07-26 2001-02-01 Aweco Appliance Sys Gmbh & Co Zulaufvorrichtung für wasserführende Einrichtungen
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4119718A1 (fr) 2021-07-13 2023-01-18 Whirlpool Corporation Machine à laver le linge équipée de moyens améliorés pour empêcher le reflux d'eau

Also Published As

Publication number Publication date
EP2344016A1 (fr) 2011-07-20
RU2497435C2 (ru) 2013-11-10
WO2010026516A1 (fr) 2010-03-11
RU2011112809A (ru) 2012-10-10
ITTO20080655A1 (it) 2010-03-05
IT1391855B1 (it) 2012-01-27

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