EP0597513A1 - Machine à laver à récirculation avec filtre haut - Google Patents

Machine à laver à récirculation avec filtre haut Download PDF

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Publication number
EP0597513A1
EP0597513A1 EP93202909A EP93202909A EP0597513A1 EP 0597513 A1 EP0597513 A1 EP 0597513A1 EP 93202909 A EP93202909 A EP 93202909A EP 93202909 A EP93202909 A EP 93202909A EP 0597513 A1 EP0597513 A1 EP 0597513A1
Authority
EP
European Patent Office
Prior art keywords
flow
washing machine
tank
washing
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.)
Granted
Application number
EP93202909A
Other languages
German (de)
English (en)
Other versions
EP0597513B1 (fr
Inventor
Silvano Fumagalli
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.)
Candy SpA
Original Assignee
Candy 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 Candy SpA filed Critical Candy SpA
Publication of EP0597513A1 publication Critical patent/EP0597513A1/fr
Application granted granted Critical
Publication of EP0597513B1 publication Critical patent/EP0597513B1/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
    • 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
    • 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 
    • D06F39/10—Filtering arrangements

Definitions

  • the present invention relates to a washing machine with recirculated flow and with an upper filter element.
  • washing machines on the market in which the liquid for filling the tank is recirculated in order to collect detergent from a detergent-holder disposed above the washing tank and/or in order to carry out washing by spraying from above.
  • the recirculation pump which is used for this purpose, and generally also for draining the washing machine, has to be disposed at a lower level than the washing tank since it is not convenient to use self-priming pumps.
  • the washing machine In order to protect the pump and the circulation circuits, the washing machine normally has a removable filter disposed upstream of the pump and at a lower level than the bottom of the tank and hence at the same level as the pump, near the floor supporting the washing machine.
  • a removable filter thus located has two disadvantages; it is inconvenient to remove and requires the user to bend down to floor level. It also involves an overflow of water when it is opened, since it is disposed approximately at the level of the pump and is thus subject to backflow from the draining and recirculation pipes which necessarily transport the liquid to higher levels and cause it to fall towards the pump when the pump is switched off.
  • washing machine with recirculated flow of the present invention which has a filter disposed downstream of the recirculation pump and located above the washing tank, in practice, immediately below the clear top surface of the washing machine, so as not to be affected by backflow and, in any case, in a position such as to enable backflow to be drained into the underlying tank.
  • the filter is also easily and conveniently accessible to the user.
  • the filter element is formed as an integral structure with the detergent-dispenser unit of the washing machine.
  • the filter element is formed as a combined filter and diverter-valve system for diverting the output flow of the pump towards a drain or towards a detergent-holder drawer, considerably simplifying its structure and installation and consequently reducing costs.
  • valve system enables easy inspection and maintenance of the valve system which is disposed downstream of the filter and is thus protected from the damaging effect of solid residues (which are retained upstream) on the seals of the valve system.
  • valve system associated with the filter is subservient to and operated by the same kinematic mechanism which controls the collection of detergent from the drawer, with further structural simplifications and rationalizations and consequent cost reductions.
  • the washing machine of the invention is constituted by a casing 1 housing a washing tank 2 containing a rotary drum 3 driven by a motor, not shown.
  • the bottom of the tank houses heating elements 5.
  • the bottom of the tank communicates directly, by means of a pipe 6, with a suction pump 7, the output 8 of which is connected to a flow-diverter valve system 9 which can be operated to divert the flow output by the pump towards a drain pipe 10 or towards a recirculation pipe 11.
  • the recirculation pipe 11 leads to the input 15 of a filter 12 disposed above the tank 2 near a detergent-holder 4 housed in a box 14 for collecting the flow.
  • the filter is constituted by a fixed housing 12 and a removable, annular filter element 13.
  • the fixed housing of the filter has an outlet pipe 16 terminating in an orientable nozzle 17 disposed above the detergent-holder 4 so that the recirculated flow can remove detergent.
  • the orientation of the nozzle 17 is set by an operating rod 18 which is moved by the rocker-arm of a conventional cam programmer 20.
  • All these elements are housed in the upper portion of the washing machine near the top surface 21 thereof which, in front-loading washing machines, is normally left clear to permit built-in installation.
  • the box 14 communicates with the washing tank by means of a drain pipe 25 terminating in a spray nozzle 26.
  • the filter element 13 can be removed axially from the front of its fixed housing (at least in the case of a front-loading washing machine), by means of a suitable rotation of the filter element and of a closure plug associated therewith.
  • the filter element may be disposed so that the axis of the annular body is vertical, with removal taking place axially upwards.
  • the filter is located in a conveniently accessible position in both cases.
  • the filter housing 12 may have an opening 27 for fractioning the recirculated flow directed towards the nozzle 17.
  • the flow-fractioning path is constituted by a pipe 29 connected to the opening 27 and terminating in an extractor nozzle 30 which cooperates with the nozzle 26 to impart a faster speed to the liquid flowing out of the pipe 25.
  • the flow-fractioning path ensures, if necessary, that the filter is emptied completely when the force of the pump 7 ceases. In the absence of this path, any liquid remaining in the filter collects in the box 14 when the filter is opened.
  • the small opening 27 opens directly into the box 14 and can bring about a very slight fractioning of the recirculated flow and ensure that the filter is drained completely when the pump 7 is inactive.
  • Figures 2 and 3 are a frontal section and a cross section taken in the plane A-A of Figure 2, respectively, of a preferred embodiment of the filter which is formed as an integral part of the detergent-dispenser unit of the washing machine.
  • the detergent dispenser unit comprises a flow-collector box 14, preferably made by moulding reinforced plastics.
  • the box 14 houses the detergent holder 4 and a fixed cylindrical filter housing 33, the axis of which is disposed horizontally and which is open at the front and closed at the rear by a diaphragm 34.
  • a central axial pipe connector 35 for connection to the recirculation pipe 11 opens in the diaphragm 34, as do two respective upper and lower pipe connectors 36 and 37, which are flush with the internal wall of the housing 33.
  • the pipe connector 36 is connected to the output pipe 16 ( Figure 1) and the pipe connector 37 is connected to the choking duct 29.
  • the housing houses a cylindrical filter element 38 closed at the front by a screw plug 39 with a sealing ring 40, engaged and screwed into a corresponding seat in the housing.
  • the flow diverter 9 is disposed upstream of the filter 12 and may therefore be subject to problems caused by lint and solid elements in the washing liquid.
  • this problem is eliminated by the formation of a filter body which also acts as a flow-diverter valve, disposed immediately downstream of the filter.
  • FIG. 4 and 5 show the filter-diverter unit sectioned in a plane perpendicular to the axis of the cylindrical filter housing, and in the planes B-B of Figure 4, respectively.
  • the bottom of the cylindrical housing 43 opens into a chamber formed by a container 44 for the diverter and, unlike the housing of Figure 3, has only the axial pipe connector 35 for connection to the recirculation pipe.
  • the container 44 may be formed in one piece with the fixed housing 43 and the front portion of the collector box by a moulding operation, with multiple cooperating mould elements which are movable in transverse directions.
  • One side of the container 44 is open and has a coupling flange 45 cooperating with a facing flange 46 of a closure cover 47.
  • a through pipe connector 48 is fixed to the side opposite the flange by gluing or by thermocompression bonding and is extended internally by a cylindrical nozzle 49 integral with the connector or, preferably, screwed thereon.
  • the closure cover 47 also has a cylindrical nozzle 50 which is centred axially relative to the nozzle 49 and communicates with an outlet 51.
  • the recirculated flow admitted axially to the filter through the pipe connector 35 After the recirculated flow admitted axially to the filter through the pipe connector 35 has been cleaned of solid residues by the filter element, it is sent into the chamber of the container 44 and, according to the position of the diaphragm 54, is recirculated through the nozzle 49 and the pipe connector 48 or is drained to the outside through the nozzle 50 and the outlet 51.
  • the outlet nozzle 50 may be in the open condition and any liquid residues present in the filter and in the container 44 are thus drained through the outlet 51.
  • the opening of the filter then enables easy inspection and functional checking of the diverter.
  • the diaphragm 54 can also be screwed onto the rod 53 so that any replacement of the diaphragm or of the seals 55, 56 can be carried out quickly and easily, without the need to disassemble structural parts.
  • FIG. 6 is a frontal section of the filter-diverter unit and of the conventional kinematic programming mechanism of the washing machine, which is adapted to operate the diverter.
  • the diaphragm 54 is operated by a rod 53 controlled by an operating lever 57 pivoted at its centre on a pin 58 supported by a box-type support 59.
  • the lower arm 60 of the lever engages a seat 61 in the rod 53.
  • a helical spring 62 wound onto a central bush of the lever 57 with one end engaged by a wall 63 of the support and the other end engaged by the lower arm 60 tends to rotate the lever, urging the diaphragm 54 against the recirculation nozzle 49, by means of the rod 53.
  • the end 64 of the upper arm of the lever 57 is engaged by an entrainment and compensation spring 65 fixed to a rod 66 for moving a nozzle, or equivalent flow-orienting device, over one or a plurality of compartments of a detergent-holder which is not shown since it is of known type.
  • the rod 66 is coupled to a rocker arm 67 of a cam programming device 68, also of known type.
  • the involute cam profile has a plurality greater than 2 of active levels, each of which corresponds to a predetermined position of the rod 66 and predetermined operative conditions.
  • the spring 65 provides a resilient coupling which enables the rod 66 to assume a plurality of more than two working positions.
  • the base of the box-type support 59 conveniently, but not necessarily, opens into a pipe connector 69 which can be connected to the washing tank or to the flow-collector box 14, in order to send thereto any liquid which overflows through the sliding coupling between the rod 53 and the cover 47, thus making the use of seals on the rod unnecessary, in practice.
  • the rod therefore operates particularly smoothly and does not exert an appreciable resisting torque on the rocker arm of the programmer by means of the kinematic mechanism described.
  • a further advantage offered by the solution described in Figure 6 is that the flow-diverter can be operated with the machine switched off, by the manual rotation of the programming cam 68 with the filter element open.
  • the functions of the springs 62 and 65 may be made superfluous by a design of the lever 57 which affords it suitable resilience.
  • the function performed by the nozzle 17 for dispensing detergent from the container 4 may be performed by the nozzle 24 for filling the washing machine, the recirculated flow having the function solely of spraying the washing in the washing tank.
  • the recirculation pipe 16 at the outlet of the filter may be connected directly to the draining pipe 25 and to the spray nozzle 26.
  • the invention is directed specifically towards washing machines with recirculated flow, for filtering the recirculated flow, it can also be applied to washing machines without recirculated flow, in which the self-cleaning pump does not itself require filter protection, in order to solve the same technical problem, that is, that of ensuring the cleanliness of the output flow of the pump which, in this case, is discharged into the domestic waste water drainage system and at the same time enables the filter to be maintained easily and reliably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP93202909A 1992-11-12 1993-10-19 Machine à laver à recirculation et filtre placé en haut Expired - Lifetime EP0597513B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI922596A IT1256102B (it) 1992-11-12 1992-11-12 Macchina lavabiancheria a ricircolazione di flusso con elemento filtrante disposto superiormente
ITMI922596 1992-11-12

Publications (2)

Publication Number Publication Date
EP0597513A1 true EP0597513A1 (fr) 1994-05-18
EP0597513B1 EP0597513B1 (fr) 1997-05-28

Family

ID=11364282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93202909A Expired - Lifetime EP0597513B1 (fr) 1992-11-12 1993-10-19 Machine à laver à recirculation et filtre placé en haut

Country Status (4)

Country Link
EP (1) EP0597513B1 (fr)
DE (1) DE69311063T2 (fr)
ES (1) ES2104045T3 (fr)
IT (1) IT1256102B (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1502987A1 (fr) * 2003-07-31 2005-02-02 Samsung Electronics Co., Ltd. Machine à laver
KR20050017655A (ko) * 2003-08-08 2005-02-22 삼성전자주식회사 드럼 세탁기 및 그 제어방법
EP1500736A3 (fr) * 2003-07-23 2005-03-16 Samsung Electronics Co., Ltd. Machine à laver
FR2873912A1 (fr) * 2004-08-03 2006-02-10 Brandt Ind Sas Procede de reutilisation d'un liquide de lavage ou de rincage dans une machine a laver, machine a laver et systeme de filtrage associes
US20070261177A1 (en) * 2006-05-11 2007-11-15 General Electric Company Bulk dispensing system for washing machine
EP2339059A2 (fr) * 2008-08-28 2011-06-29 Daewoo Electronics Corporation Appareil et procédé de circulation d'eau de lessive pour machine à laver à tambour
EP2492387A1 (fr) * 2011-02-28 2012-08-29 Miele & Cie. KG Dispositif de rinçage pour un lave-linge doté d'un tiroir agencé dans un compartiment d'introduction
WO2013098037A1 (fr) * 2011-12-28 2013-07-04 Arcelik Anonim Sirketi Machine à laver comprenant un distributeur d'agent de nettoyage
CN104153162A (zh) * 2014-08-19 2014-11-19 松下家电研究开发（杭州）有限公司 一种具有自清洁循环过滤系统的洗衣机及其控制方法
USD848692S1 (en) 2017-12-21 2019-05-14 Whirlpool Corporation Bulk dispensing drawer
USD865306S1 (en) 2017-12-21 2019-10-29 Whirlpool Corporation Laundry treating appliance door
USD866887S1 (en) 2017-12-21 2019-11-12 Whirlpool Corporation Pedestal
USD874764S1 (en) 2017-12-21 2020-02-04 Whirlpool Corporation User interface
USD877431S1 (en) 2017-12-21 2020-03-03 Whirlpool Corporation User interface
EP3695768A1 (fr) * 2019-02-12 2020-08-19 BSH Hausgeräte GmbH Appareil électroménager doté d'un élément filtrant
USD899720S1 (en) 2017-12-21 2020-10-20 Whirlpool Corporation Laundry treating appliance
EP3832001A1 (fr) * 2019-12-06 2021-06-09 E.G.O. Elektro-Gerätebau GmbH Appareil électroménager à circulation d'eau et procédé de fonctionnement d'un tel appareil électroménager à circulation d'eau
WO2022025848A3 (fr) * 2020-07-29 2022-07-28 Arcelik Anonim Sirketi Machine à laver comprenant un élément filtrant
EP4225987A4 (fr) * 2020-10-06 2024-08-14 Arcelik As Machine à laver comprenant un élément de filtration

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586508A (en) * 1945-01-18 1952-02-19 Horton Mfg Co Inc Strainer for washing machines
US2936604A (en) * 1957-01-15 1960-05-17 Whirlpool Co Laundry machine with a built-in automatic lint filter
US2959286A (en) * 1957-10-04 1960-11-08 Gorman Rupp Ind Inc Self-cleaning filter system for automatic washer
DE1610190A1 (de) * 1967-12-07 1971-07-08 Siemens Elektrogeraete Gmbh Waschmaschine
DE1785610A1 (de) * 1966-11-28 1973-04-19 Siemens Elektrogeraete Gmbh Waeschebehandlungsmaschine
DE3403368A1 (de) * 1984-01-20 1985-08-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Trommelwaschmaschine fuer den haushalt

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586508A (en) * 1945-01-18 1952-02-19 Horton Mfg Co Inc Strainer for washing machines
US2936604A (en) * 1957-01-15 1960-05-17 Whirlpool Co Laundry machine with a built-in automatic lint filter
US2959286A (en) * 1957-10-04 1960-11-08 Gorman Rupp Ind Inc Self-cleaning filter system for automatic washer
DE1785610A1 (de) * 1966-11-28 1973-04-19 Siemens Elektrogeraete Gmbh Waeschebehandlungsmaschine
DE1610190A1 (de) * 1967-12-07 1971-07-08 Siemens Elektrogeraete Gmbh Waschmaschine
DE3403368A1 (de) * 1984-01-20 1985-08-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Trommelwaschmaschine fuer den haushalt

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500736A3 (fr) * 2003-07-23 2005-03-16 Samsung Electronics Co., Ltd. Machine à laver
EP1502987A1 (fr) * 2003-07-31 2005-02-02 Samsung Electronics Co., Ltd. Machine à laver
KR20050017655A (ko) * 2003-08-08 2005-02-22 삼성전자주식회사 드럼 세탁기 및 그 제어방법
FR2873912A1 (fr) * 2004-08-03 2006-02-10 Brandt Ind Sas Procede de reutilisation d'un liquide de lavage ou de rincage dans une machine a laver, machine a laver et systeme de filtrage associes
EP1632598A2 (fr) 2004-08-03 2006-03-08 Brandt Industries Procédé de réutilisation d'un liquide de lavage ou de rinçage dans une machine à laver, machine à laver et système de filtration associés
EP1632598A3 (fr) * 2004-08-03 2006-06-07 Brandt Industries Procédé de réutilisation d'un liquide de lavage ou de rinçage dans une machine à laver, machine à laver et système de filtration associés
US8931310B2 (en) * 2006-05-11 2015-01-13 General Electric Company Bulk dispensing system for washing machine
US20070261177A1 (en) * 2006-05-11 2007-11-15 General Electric Company Bulk dispensing system for washing machine
EP2339059A2 (fr) * 2008-08-28 2011-06-29 Daewoo Electronics Corporation Appareil et procédé de circulation d'eau de lessive pour machine à laver à tambour
EP2339059A4 (fr) * 2008-08-28 2012-03-21 Daewoo Electronics Corp Appareil et procédé de circulation d'eau de lessive pour machine à laver à tambour
EP2492387A1 (fr) * 2011-02-28 2012-08-29 Miele & Cie. KG Dispositif de rinçage pour un lave-linge doté d'un tiroir agencé dans un compartiment d'introduction
WO2013098037A1 (fr) * 2011-12-28 2013-07-04 Arcelik Anonim Sirketi Machine à laver comprenant un distributeur d'agent de nettoyage
CN104153162A (zh) * 2014-08-19 2014-11-19 松下家电研究开发（杭州）有限公司 一种具有自清洁循环过滤系统的洗衣机及其控制方法
USD866887S1 (en) 2017-12-21 2019-11-12 Whirlpool Corporation Pedestal
USD865306S1 (en) 2017-12-21 2019-10-29 Whirlpool Corporation Laundry treating appliance door
USD848692S1 (en) 2017-12-21 2019-05-14 Whirlpool Corporation Bulk dispensing drawer
USD874764S1 (en) 2017-12-21 2020-02-04 Whirlpool Corporation User interface
USD877431S1 (en) 2017-12-21 2020-03-03 Whirlpool Corporation User interface
USD899720S1 (en) 2017-12-21 2020-10-20 Whirlpool Corporation Laundry treating appliance
USD900418S1 (en) 2017-12-21 2020-10-27 Whirlpool Corporation Laundry treating appliance
USD958479S1 (en) 2017-12-21 2022-07-19 Whirlpool Corporation Laundry treating appliance
EP3695768A1 (fr) * 2019-02-12 2020-08-19 BSH Hausgeräte GmbH Appareil électroménager doté d'un élément filtrant
EP3832001A1 (fr) * 2019-12-06 2021-06-09 E.G.O. Elektro-Gerätebau GmbH Appareil électroménager à circulation d'eau et procédé de fonctionnement d'un tel appareil électroménager à circulation d'eau
WO2022025848A3 (fr) * 2020-07-29 2022-07-28 Arcelik Anonim Sirketi Machine à laver comprenant un élément filtrant
EP4225987A4 (fr) * 2020-10-06 2024-08-14 Arcelik As Machine à laver comprenant un élément de filtration

Also Published As

Publication number Publication date
DE69311063D1 (de) 1997-07-03
IT1256102B (it) 1995-11-28
EP0597513B1 (fr) 1997-05-28
ES2104045T3 (es) 1997-10-01
DE69311063T2 (de) 1998-01-08
ITMI922596A1 (it) 1994-05-12
ITMI922596A0 (it) 1992-11-12

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