EP2902540A1 - Waschmaschine - Google Patents

Waschmaschine Download PDF

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Publication number
EP2902540A1
EP2902540A1 EP14193613.8A EP14193613A EP2902540A1 EP 2902540 A1 EP2902540 A1 EP 2902540A1 EP 14193613 A EP14193613 A EP 14193613A EP 2902540 A1 EP2902540 A1 EP 2902540A1
Authority
EP
European Patent Office
Prior art keywords
detergent
laundry
conduit
washing machine
basin
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
EP14193613.8A
Other languages
English (en)
French (fr)
Other versions
EP2902540B1 (de
Inventor
Aldo 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 EP2902540A1 publication Critical patent/EP2902540A1/de
Application granted granted Critical
Publication of EP2902540B1 publication Critical patent/EP2902540B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D06F39/085—Arrangements or adaptations of pumps
    • 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
    • D06F39/088—Liquid supply arrangements

Definitions

  • the present invention relates to a device and method for washing laundry, particularly a household laundry washing machine.
  • the household laundry washing machines comprise a support and housing structure, inside which a washing tub is housed, which is provided with a front opening that can be closed by a porthole door frontally hinged to the housing.
  • a drum to receive the laundry to be subjected to the washing operation is housed inside the washing tub, in a rotatable manner about a horizontal or inclined axis.
  • the drum also defines a front opening arranged at the washing tub opening, in order to be able to carry out the laundry loading and unloading.
  • the washing tub is suitable to hold the washing liquid during the laundry washing steps.
  • a system for loading the washing water is provided for, which is connectable to the water supply system.
  • a drain conduit is provided for on the washing tub bottom, with an associated drain pump that provides for the removal of the washing liquid from the tub and that controls, together with the loading system, the liquid level inside the tub.
  • an electric resistor is provided for, which is arranged inside the tub in the interspace between the tub wall and the laundry drum.
  • washing and washer-dryer machines of the prior art and the washing and drying methods implemented thereby, while being satisfactory from several aspects, are bulky and have a high consumption of water, electric power, and detergent.
  • pumps are known, which are referred to as jet pumps or ejectors, which use the Venturi effect of a converging-diverging nozzle to convert the pressure energy of a motor fluid into velocity energy, which, in turn, creates a low pressure that draws and drags a driven fluid.
  • the motor fluid and the dragged driven fluid may be liquids or gases.
  • washing systems and methods a number of configurations of electric pumps and ejectors for recirculating the washing liquid from the tub bottom into the laundry drum of the laundry washing machine have been tested.
  • the mains water and the detergent inserted in the washing tub instead of acting immediately and in an intense manner with the laundry, are inserted into the tub by gravity, thus initially building up on the washing tub bottom, and require energy to be pumped again (in the case of a washing system with recirculation) or dragged/lifted upwardly (by the rotation of the laundry drum) and let fall on the laundry drum bottom or inside it, where they finally contact the laundry.
  • the detergent is not yet completely transferred from the detergent basin into the washing tub, and the portion of detergent brought into the tub is not evenly mixed with water, but tends to deposit on the tub bottom. Consequently, in the first washing steps the concentration of detergent in the laundry is undesirably low.
  • the known automatic washing systems and methods are further generally lacking an initial step of direct "soaping" of the laundry, possibly associated to a rubbing operation, which is usual in the manual washing and of great help for a targeted and saving use of cleaning.
  • the main object of the present invention is to provide a washing machine and a washing method, which have such characteristics as to obviate at least some of the drawbacks mentioned with reference to the prior art.
  • Specific objects of embodiments of the invention are the increase of the washing efficiency, the reduction of the consumptions of detergent and water, the reduction of the overall energy usage for an automatic washing of the laundry, and the simplification of the washing system itself.
  • a further object of the invention is to provide a laundry washing machine with an improved water and detergent supply system and, consequently, with improved washing performance.
  • a laundry washing machine comprising:
  • the detergent initially contained in the basin is rinsed away in a quicker and more complete manner, and it mixes in a more intense manner with the water.
  • This mixture with a high detergent concentration instead of falling onto the washing tub bottom, is sprayed directly and with an accelerated jet (compared to the effect only of the gravity) onto the laundry within the laundry drum. Due to the drum rotation, the laundry is located from the start along a "satellized" ring along the drum circumferential wall, exposing a high amount of surface to the jet of the detergent mixture.
  • a direct soaping of the laundry in the initial washing step is thus obtained, along with a mechanical action given by the hydrodynamic pressure of the spray. Furthermore, a deposition of unused detergent onto the tub bottom is obviated, since the mixture of water and detergent sprayed in the laundry within the drum, before being able to reach the outside of the rotating drum, has to pass through, hence to interact with the entire thickness of the laundry ring arranged along the cylindrical wall of the drum.
  • a laundry washing machine 1 or washer-dryer machine intended as a particular embodiment of the laundry washing machine, comprises a support and housing structure 2, inside which a washing tub 3 is housed, which is provided with a front opening that is closable by a porthole door 4 frontally hinged to the housing 5.
  • a drum 5 to receive the laundry to be subjected to the washing operation is housed inside the washing tub 3, in a rotatable manner about a horizontal or inclined axis.
  • the drum 5 also defines a front opening arranged at the washing tub 3 opening, in order to be able to carry out the laundry loading and unloading.
  • the washing tub 3 is suitable to hold the washing liquid during the laundry washing steps.
  • washing water loading system may comprise a plurality of washing flow paths, extending, for example, from two supply electrovalves 6, 7, through respective detergent compartments 11 of a detergent basin 12, up into the washing tub 3.
  • a drain conduit 9 connects to the bottom 12 of the washing tub 3, with associated drain pump 10 which provides for the removal of the washing liquid from the tub 3 and which controls, together with the supply electrovalves 6, 7 the liquid level within the tub 3.
  • an electric coil resistor 11 may be provided for, which is arranged inside the tub 3, particularly on the tub bottom 12, in the interspace between the wall of the tub 3 and the laundry 5.
  • the laundry drum 5 may be actuated in rotation by an electric motor 13 and a transmission 14, for example a belt.
  • the operation of the laundry washing machine 1 is controlled by an electronic, electric, or electromechanical control unit 15, operatively connected to a user control interface 16 which is located at an outer wall of the support structure 2 and which allows selecting the washing cycles and the characteristics thereof.
  • the control unit 15 controls the various components of the laundry washing machine 1 to automatically carry out the washing of the laundry.
  • the laundry washing machine 1 comprises:
  • the detergent initially contained in the basin is rinsed away in a quicker and more complete manner, and it mixes in a more intense manner with the water.
  • This mixture with a high detergent concentration instead of falling onto the washing tub 3 bottom, is sprayed directly (onto the laundry) in the laundry drum 5.
  • a direct soaping of the laundry in the initial washing step is thus obtained, along with a mechanical action given by the hydrodynamic pressure of the spray. Furthermore, a deposition of unused detergent onto the tub bottom 3 is obviated, since the mixture of water and detergent sprayed in the drum 5, before being able to reach the outside of the rotating drum, has to pass through, hence to interact with the entire thickness of the laundry ring arranged along the cylindrical wall 20 of the drum 5.
  • the pumping means comprise an ejector 19 with a motor fluid inlet opening 21 connectable to the water supply system by one of the electrovalves 6, 7, a suction opening 22, and an outlet opening 23 that are connected in the second conduit 18, as illustrated e.g., in Fig. 2 .
  • the invention also contemplates the use of alternative pumping means, e.g., an electric pump.
  • the motor fluid inlet opening 21 of the ejector 19 is connected to a third conduit 24 branching directly from the first conduit 17 in a branch point 25 upstream of the detergent basin 8.
  • a partial flow 26 ( Fig. 2 ) of mains water is directed into the ejector 19, where it performs the function of motor fluid for the pumping operation.
  • a concomitant filling with liquid of the detergent basin 8 and the conduits connected to the ejector 19 is obtained, without any needs for a further synchronization of the introduction of water in the detergent basin 8 and the pumping means.
  • control unit 15 of the laundry washing machine 1 is configured so as to rotate the laundry drum 5 and simultaneously spraying the mixture of water and detergent suctioned from the detergent basin 8 into the laundry drum 5.
  • the rotational motion and the centrifugal force arrange and distribute the laundry in an annular zone along the (cylindrical or conical) side wall 20 of the drum 5 and make it pass continuously under the jet or spray of the water-detergent mixture, which thus reaches directly a large laundry surface.
  • the second supply conduit has a plurality of outlet openings or nozzles 27 so as to produce a plurality of individual jets directed onto different areas within the laundry drum 5, preferably on areas of the inner surface of the side wall 20 along which the laundry subjected to the washing is arranged.
  • the nozzle(s) 27 preferably face the front opening of the laundry drum 5 so as to directly spray through that opening to the inside thereof.
  • the nozzle(s) 27 are located at an elastic gasket 28 formed between the front opening of the tub 3 and the housing 2, as shown, for example, in the Figs. 6 and 8 .
  • the second conduit 18 branches downstream of the pumping means, forming two conduit lengths 29, 30 connected to nozzles 27 that are mutually spaced apart and arranged, for example, on two opposite sides of the front opening of the tub 3 ( Figs. 1 and 8 ).
  • the ejector 19 can be arranged in an otherwise unused space between the detergent basin 8 and the washing tub 3, preferably in the upper third of the height of the tub 3 ( Fig. 6 ). In order to obviate the risk of damages due to the vibrations of the tub 3, the ejector 19 is advantageously located in the proximity of an outer side of the detergent basin 8 facing away from the tub 3.
  • the detergent basin 8 forms a first tank cavity 31 with a first discharge opening 32 formed in a bottom wall of the first tank cavity 31 and connected to the second conduit 18. Adjacent to the first tank cavity 31 a second tank cavity 33 is formed, with a second discharge opening 34 formed in a bottom wall of the second tank cavity 33 and connected by a descending conduit 35 directly to the washing tank 3. Between the first 31 and the second tank cavity 33, a partition wall 36 is formed, with a predetermined height defining an isolated maximum filling level only of the first tank cavity 31.
  • the mains water coming from the first conduit 17 is directed, for example, guided by the shape of the detergent compartments above, in the first tank cavity 31 and, only when the maximum filling level is exceeded, it overflows an upper edge 37 of the partition wall 36 from the first tank cavity 31 into the second tank cavity 33.
  • a further supply conduit (fifth conduit 38) can be provided for, which connects a second supply valve 7 in flow communication with the detergent basin 8 so as to be able to direct a further flow of mains water in the detergent basin 8 and, by the selection and combination of the two independent flows (e.g., single flow from the first conduit, single flow from the fifth conduit or crossed flow from the first and fifth conduit) rinsing detergents and additives from different detergent compartments of the detergent basin 8.
  • the laundry drum 5 has a loading opening, for example, a casement loading opening, formed in a side wall of the drum 5 and that can be overlapped by an upper opening of the washing tub and the support structure, which may be closed and opened by a hinged lid.
  • the detergent basin can be preferably formed or connected directly to the hinged lid, and it is arranged in flow connection with the several conduits at least when the lid is closed (operative state of the machine).
  • the laundry washing machine 1 may further comprise a system for the recirculation of the washing liquid from the tub bottom to the laundry drum, similarly to the recirculation systems described with reference to the prior art.
  • the present invention also relates to the washing method described with exemplary reference to the washing machine 1, and the characteristic thereof are not repeated herein for the sake of brevity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP14193613.8A 2014-01-30 2014-11-18 Waschmaschine Active EP2902540B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20140123 2014-01-30

Publications (2)

Publication Number Publication Date
EP2902540A1 true EP2902540A1 (de) 2015-08-05
EP2902540B1 EP2902540B1 (de) 2020-11-04

Family

ID=50513970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14193613.8A Active EP2902540B1 (de) 2014-01-30 2014-11-18 Waschmaschine

Country Status (3)

Country Link
EP (1) EP2902540B1 (de)
CN (1) CN104818595B (de)
RU (1) RU2685100C2 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150238066A1 (en) * 2013-08-16 2015-08-27 Hangzhou Kambayashi Electronic Co., Ltd. Detergent Release Controller
US10294604B2 (en) 2017-06-22 2019-05-21 Haier Us Appliance Solutions, Inc. Dryer appliance and additive dispensing assembly
US10344419B2 (en) 2016-11-08 2019-07-09 Haier Us Appliance Solutions, Inc. Washing machine appliance and additive dispensing assembly
EP3633095A1 (de) * 2018-10-04 2020-04-08 Miele & Cie. KG Waschmaschine mit einem wasserzufuhrsystem
EP3632289A1 (de) * 2018-10-04 2020-04-08 Miele & Cie. KG Waschmaschine
EP3632288A1 (de) * 2018-10-04 2020-04-08 Miele & Cie. KG Waschmaschine
CN112900018A (zh) * 2019-11-19 2021-06-04 青岛海尔滚筒洗衣机有限公司 衣物处理设备的进水控制方法及衣物处理设备
CN114990855A (zh) * 2022-06-01 2022-09-02 海信（山东）冰箱有限公司 一种滚筒洗衣机
US11519127B2 (en) 2020-09-14 2022-12-06 Ali Rabbani Systems and methods for cleaning fabric

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106319874B (zh) * 2015-06-30 2018-11-13 无锡小天鹅股份有限公司 用于洗衣机的洗衣粉盒和具有其的洗衣机
CN106521884A (zh) * 2015-09-15 2017-03-22 青岛海尔滚筒洗衣机有限公司 一种洗衣机及洗衣机的洗涤剂的投放方法
CN106498667B (zh) * 2016-11-21 2019-07-23 珠海格力电器股份有限公司 一种洗衣机的控制装置、洗衣机及其控制方法
CN109423850A (zh) * 2017-09-04 2019-03-05 无锡小天鹅股份有限公司 供水机构及洗衣机
CN110699927B (zh) * 2018-07-09 2023-06-13 青岛海尔洗涤电器有限公司 一种添加剂自动投放装置及方法及洗衣机
JP7149463B2 (ja) * 2019-04-09 2022-10-07 パナソニックＩｐマネジメント株式会社 洗濯機
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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1168561A (en) * 1966-09-13 1969-10-29 Electrolux Ab Improvements in or relating to Clothes or Dish Washing Machines
DE7735078U1 (de) * 1977-11-16 1978-05-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Waschmaschine mit Zusatzmitteleinspülvorrichtung in einen Laugenbehälter
DE102008054821B3 (de) * 2008-12-17 2010-03-18 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät mit Venturipumpe am Wasserzufuhrstrang
US20110083477A1 (en) * 2009-10-13 2011-04-14 Wooyoung Kim Laundry treating apparatus
US20120151970A1 (en) * 2010-12-16 2012-06-21 Leibman Alexander Apparatus and method for using a dispensing system utilizing a venturi component
US20120246836A1 (en) * 2011-03-30 2012-10-04 Leibman Alexander Apparatus and method for utilizing a venturi effect in a dispenser
EP2508667A1 (de) * 2009-12-03 2012-10-10 Haier Group Corporation Waschmaschine mit einem automatisch durch unterdruck hinzugefügten waschmittel und steuerverfahren dafür

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489455A (en) * 1982-10-28 1984-12-25 The Procter & Gamble Company Method for highly efficient laundering of textiles
DD301607A7 (de) * 1988-11-10 1993-04-15 Waschgeraete Gmbh Schwarzenber Verfahren zum waschen von textilgut
KR100587330B1 (ko) * 2003-11-04 2006-06-08 엘지전자 주식회사 세탁물 건조기 및 그의 드라이크리닝 모드를 위한 운전 방법
CN102086586B (zh) * 2009-12-03 2015-07-01 海尔集团公司 利用负压自动添加洗涤剂的洗衣方法及洗衣机
JP5828123B2 (ja) * 2011-02-23 2015-12-02 パナソニックＩｐマネジメント株式会社 ドラム式洗濯機
EP2511411B1 (de) * 2011-04-15 2020-05-06 Candy S.p.A. Verfahren zur Verstärkung der Aktivierung eines Waschmittels in einer Waschmaschine oder in einer Waschmaschine/Trockner-Maschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1168561A (en) * 1966-09-13 1969-10-29 Electrolux Ab Improvements in or relating to Clothes or Dish Washing Machines
DE7735078U1 (de) * 1977-11-16 1978-05-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Waschmaschine mit Zusatzmitteleinspülvorrichtung in einen Laugenbehälter
DE102008054821B3 (de) * 2008-12-17 2010-03-18 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltsgerät mit Venturipumpe am Wasserzufuhrstrang
US20110083477A1 (en) * 2009-10-13 2011-04-14 Wooyoung Kim Laundry treating apparatus
EP2508667A1 (de) * 2009-12-03 2012-10-10 Haier Group Corporation Waschmaschine mit einem automatisch durch unterdruck hinzugefügten waschmittel und steuerverfahren dafür
US20120151970A1 (en) * 2010-12-16 2012-06-21 Leibman Alexander Apparatus and method for using a dispensing system utilizing a venturi component
US20120246836A1 (en) * 2011-03-30 2012-10-04 Leibman Alexander Apparatus and method for utilizing a venturi effect in a dispenser

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150238066A1 (en) * 2013-08-16 2015-08-27 Hangzhou Kambayashi Electronic Co., Ltd. Detergent Release Controller
US9498103B2 (en) * 2013-08-16 2016-11-22 Hangzhou Kambayashi Electronic Co., Ltd Detergent release controller
US10344419B2 (en) 2016-11-08 2019-07-09 Haier Us Appliance Solutions, Inc. Washing machine appliance and additive dispensing assembly
US10294604B2 (en) 2017-06-22 2019-05-21 Haier Us Appliance Solutions, Inc. Dryer appliance and additive dispensing assembly
EP3632288A1 (de) * 2018-10-04 2020-04-08 Miele & Cie. KG Waschmaschine
EP3632289A1 (de) * 2018-10-04 2020-04-08 Miele & Cie. KG Waschmaschine
EP3633095A1 (de) * 2018-10-04 2020-04-08 Miele & Cie. KG Waschmaschine mit einem wasserzufuhrsystem
DE102018124453A1 (de) * 2018-10-04 2020-04-09 Miele & Cie. Kg Waschmaschine
DE102018124451A1 (de) * 2018-10-04 2020-04-09 Miele & Cie. Kg Waschmaschine
DE102018124446A1 (de) * 2018-10-04 2020-04-09 Miele & Cie. Kg Waschmaschine
CN112900018A (zh) * 2019-11-19 2021-06-04 青岛海尔滚筒洗衣机有限公司 衣物处理设备的进水控制方法及衣物处理设备
CN112900018B (zh) * 2019-11-19 2024-05-28 重庆海尔滚筒洗衣机有限公司 衣物处理设备的进水控制方法及衣物处理设备
US11519127B2 (en) 2020-09-14 2022-12-06 Ali Rabbani Systems and methods for cleaning fabric
US11939718B2 (en) 2020-09-14 2024-03-26 Ali Rabbani Systems and methods for cleaning fabric
CN114990855A (zh) * 2022-06-01 2022-09-02 海信（山东）冰箱有限公司 一种滚筒洗衣机

Also Published As

Publication number Publication date
CN104818595A (zh) 2015-08-05
RU2685100C2 (ru) 2019-04-16
EP2902540B1 (de) 2020-11-04
CN104818595B (zh) 2020-09-29
RU2015102947A (ru) 2016-08-20
RU2015102947A3 (de) 2018-07-13

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