EP0261363A1 - Maschine zum Waschen von Wäsche mittels Ultraschallschwingungen - Google Patents

Maschine zum Waschen von Wäsche mittels Ultraschallschwingungen Download PDF

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Publication number
EP0261363A1
EP0261363A1 EP87111344A EP87111344A EP0261363A1 EP 0261363 A1 EP0261363 A1 EP 0261363A1 EP 87111344 A EP87111344 A EP 87111344A EP 87111344 A EP87111344 A EP 87111344A EP 0261363 A1 EP0261363 A1 EP 0261363A1
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EP
European Patent Office
Prior art keywords
washing
laundry
tub
drum
elements
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.)
Withdrawn
Application number
EP87111344A
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English (en)
French (fr)
Inventor
Giuseppe Frucco
Roberto Sburlino
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi 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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Publication of EP0261363A1 publication Critical patent/EP0261363A1/de
Withdrawn legal-status Critical Current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
    • D06F19/00—Washing machines using vibrations for washing purposes

Definitions

  • the present invention relates to a laundry washing machine provided with ultrasonic generator devices for assisting the washing of the laundry.
  • a known laundry washing machine of this type is described in FR-PS 1,011,575, according to which the washing of the laundry is carried out by means of ultrasonic waves produced by generator devices in the form of suitable piezoelectric transducers disposed within the tub of the machine, the tub also containing the laundry to be washed and the washing liquid with a detergent dissolved therein.
  • a machine of this type is provided with a washing tub containing a rotatable drum on a vertical axis, and a member of elements of a non-magnetic material associated to respective ultrasonic generators of the magnetostricttive type, said elements being sealingly mounted in the bottom wall of the but so as to project partially into the tub in proximity to the bottom wall of the drum.
  • laundry washing machines of this type are capable of ensuring satisfactory results of the laundry washing operation, they still suffer from the disadvantage of not permitting optimum transmission of the ultrasonic waves from the respective elements to the laundry immersed in the washing liquid, due to the presence of the metallic bottom wall of the drum.
  • this metallic bottom wall permits only part of the ultrasonic waves to penetrate into the interior of the drum through the holes formed in the bottom wall itself for the passage of the washing liquid contained in the tub into the drum, while the imperforate portions of the bottom wall reflects the remaining part of the ultrasonic waves back onto the respective elements, so that this part of the ultrasonic waves does not contribute to the efficiency of the washing operation.
  • a laundry washing machine provided with a laundering tub and a perforate rotatable drum, both of a metallic material and provided with mutually aligned access openings, the access opening of the tub being adapted to be closed by a door hinged to a front portion of the machine, the door being provided with a window, preferably made of glass or a conventional plastic material, and partially projecting into said tub and said drum in the closed position of the door, the machine being further provided with ultrasonic generator devices of a conventional type associated to respective elements adapted to produce ultrasonic waves for assisting in the washing of the laundry contained in the drum in the presence of a washing liquid in the tub.
  • a laundry washing machine of the type defined above is characterized in that said elements are hermetically attached to the interior wall surface of said window at positions whereat they are covered by said washing liquid, and directed towards the interior wall surfaces of said drum, said elements being in addition connected to respective ones of said ultrasonic generator devices by means of flexible electric conductors.
  • FIG. 1 With reference to fig. 1, there is shown a diagrammatic illustration of a laundry washing machine according to the invention, comprising a washing tub 3 made of metallic material and supported in a per se known manner in a substantially rectangular housing 4, a drum 5 being mounted in tub 3 for rotation about a horizontal axis by means of an electric motor 13 of conventional construction.
  • Tub 3 and drum 5 are each provided with a respective access opening 6 and 7 alignment with one another, opening 6 of tub 3 being adapted to be closed by a door 8 hinged to a front portion of housing 4.
  • Door 8 is provided with a window 9, preferably made of glass, a plastic material or any other non-metallic transparent material of conventional type, and projecting a certain distance into tub 3 and drum 5 in the closed position of door 8.
  • the present laundry washing machine is also provided with ultrasonic generator devices 10 in the form of piezoelectric transducers or other suitable electronic circuits of conventional type, said ultrasonic generator devices 10 being associated to respective elements 11 mounted in the machine in a manner to be described and serving the purpose of producing ultrasonic waves of a frequency of about 20 ⁇ 60 kHz to thereby assist in the washing of the laundry contained in drum 5 after the supply to tub 3 of a washing liquid having a detergent dissolved therein.
  • the washing liquid is permitted to enter drum 5 through the perforate circumferential wall 12 thereof to be absorbed by the laundry contained therein.
  • elements 11, which in the present case are of cylindrical shape, but may of course also have any other geometric configuration, are attached to the inner wall surface of door window 9 and connected to respective ultrasonic generator devices 10 by means of flexible electric conductors 14.
  • elements 11 are disposed on window 9 at positions whereat they are completely covered by the washing liquid contained in tub 3, and oriented at different directions towards the interior wall surfaces of drum 5.
  • the inner wall surface of window 9 may additionally be provided with reflecting surfaces 15 (cf. fig. 2) in the form of thin sheets of metal or another reflecting material advantageously disposed between each element 11 and the inner wall surface of the window.
  • Such reflecting surfaces may of course also be attached to other areas of the interior wall surface of drum 5 for the purposes outlined above.
  • the tub of the machine Prior to the initiation of a selected washing p rogramme, the tub of the machine is supplied with an amount of water having a detergent dissolved therein, to fill it up to a predetermined level at which all elements 11 are covered by the liquid for the reasons given above.
  • a not shown heater element of the laundry washing machine is energized to heat the washing liquid to a preselected washing temperature of up to about 90°C.
  • ultrasonic generator devices 10 are energized for generating ultrasonic waves to assist in the washing of the laundry.
  • motor 13 is energized for rotating drum 5 at predetermined intervals and at a reduced speed.
  • ultrasonic generator devices 10 are deenergized and the laundry is rinsed in the conventional manner followed by a spin-drying step and the discharge of the liquid from the tub of the machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP87111344A 1986-08-28 1987-08-05 Maschine zum Waschen von Wäsche mittels Ultraschallschwingungen Withdrawn EP0261363A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT45740/86A IT1201781B (it) 1986-08-28 1986-08-28 Macchina lavabiancheria ad ultrasuoni
IT4574086 1986-08-28

Publications (1)

Publication Number Publication Date
EP0261363A1 true EP0261363A1 (de) 1988-03-30

Family

ID=11257959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111344A Withdrawn EP0261363A1 (de) 1986-08-28 1987-08-05 Maschine zum Waschen von Wäsche mittels Ultraschallschwingungen

Country Status (2)

Country Link
EP (1) EP0261363A1 (de)
IT (1) IT1201781B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010705A1 (de) * 1990-04-03 1991-10-10 Licentia Gmbh Mit ultraschallwellen kombiniertes waschverfahren und waschmaschine zur durchfuehrung des verfahrens
WO1994012716A1 (en) * 1992-11-30 1994-06-09 Antonio Merloni S.P.A. Washing machine
FR2704245A1 (fr) * 1993-04-20 1994-10-28 Ciapem Procédé de lavage dans une machine à laver à ultrasons.
ES2110341A1 (es) * 1994-09-16 1998-02-01 Consejo Superior Investigacion Sistema ultrasonico para lavado de textiles.
GB2392923A (en) * 2002-09-04 2004-03-17 Philip David Meadows Washing machine with ultrasonic means
WO2010058293A3 (en) * 2008-11-21 2010-07-22 Insightec Ltd. Method and apparatus for washing fabrics using focused ultrasound
US20130233030A1 (en) * 2012-03-09 2013-09-12 Vadim Chindyasov Ultrasonic washer
CN106637818A (zh) * 2017-02-27 2017-05-10 北京哈密瓜科技有限公司 一种超声波滚筒洗衣机
WO2018141914A1 (en) * 2017-02-03 2018-08-09 Arcelik Anonim Sirketi A washer-dryer utilizing the volume inside the door
CN111118824A (zh) * 2018-10-30 2020-05-08 无锡小天鹅电器有限公司 超声波发生器和清洁装置
CN111411472A (zh) * 2020-04-01 2020-07-14 南京工业职业技术学院 一种智能袜子洗烘一体机
CN113046985A (zh) * 2019-12-27 2021-06-29 佛山市云米电器科技有限公司 衣物清洗方法、滚筒洗衣机
RU205742U1 (ru) * 2021-04-16 2021-08-06 Игорь Анатольевич Страбыкин Ультразвуковая стиральная машина
CN113882113A (zh) * 2020-07-02 2022-01-04 Id 株式会社 滚筒洗衣机的超声波产生单元及利用其的具有超声波产生功能的滚筒洗衣机
EP3910104A4 (de) * 2019-01-09 2022-02-23 TCL Home Appliances (Hefei) Co., Ltd. Waschmaschinenanordnung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468550A (en) * 1944-10-27 1949-04-26 Motorola Inc Method of and apparatus for cleaning by ultrasonic waves
GB628415A (en) * 1947-05-16 1949-08-29 Gen Electric Co Ltd Improvements in or relating to cleansing apparatus
FR1011575A (fr) * 1950-01-27 1952-06-24 Machine à laver
DE1278981B (de) * 1963-01-12 1968-10-03 Siemens Elektrogeraete Gmbh Verfahren und Vorrichtung zum Waschen von Waesche
DE2261275A1 (de) * 1972-10-20 1974-05-02 San Giorgio Elettrodomesti Waschautomat, an dessen bedienungstuer ein elektrisch gesteuertes geraet angebaut ist
US4356640A (en) * 1980-07-02 1982-11-02 Christian Jansson Method of drying clothes and heating up laundry water and apparatus therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468550A (en) * 1944-10-27 1949-04-26 Motorola Inc Method of and apparatus for cleaning by ultrasonic waves
GB628415A (en) * 1947-05-16 1949-08-29 Gen Electric Co Ltd Improvements in or relating to cleansing apparatus
FR1011575A (fr) * 1950-01-27 1952-06-24 Machine à laver
DE1278981B (de) * 1963-01-12 1968-10-03 Siemens Elektrogeraete Gmbh Verfahren und Vorrichtung zum Waschen von Waesche
DE2261275A1 (de) * 1972-10-20 1974-05-02 San Giorgio Elettrodomesti Waschautomat, an dessen bedienungstuer ein elektrisch gesteuertes geraet angebaut ist
US4356640A (en) * 1980-07-02 1982-11-02 Christian Jansson Method of drying clothes and heating up laundry water and apparatus therefor

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010705A1 (de) * 1990-04-03 1991-10-10 Licentia Gmbh Mit ultraschallwellen kombiniertes waschverfahren und waschmaschine zur durchfuehrung des verfahrens
WO1994012716A1 (en) * 1992-11-30 1994-06-09 Antonio Merloni S.P.A. Washing machine
FR2704245A1 (fr) * 1993-04-20 1994-10-28 Ciapem Procédé de lavage dans une machine à laver à ultrasons.
ES2110341A1 (es) * 1994-09-16 1998-02-01 Consejo Superior Investigacion Sistema ultrasonico para lavado de textiles.
GB2392923A (en) * 2002-09-04 2004-03-17 Philip David Meadows Washing machine with ultrasonic means
GB2392923B (en) * 2002-09-04 2006-05-03 Philip David Meadows Washing machine
WO2010058293A3 (en) * 2008-11-21 2010-07-22 Insightec Ltd. Method and apparatus for washing fabrics using focused ultrasound
US20130233030A1 (en) * 2012-03-09 2013-09-12 Vadim Chindyasov Ultrasonic washer
WO2018141914A1 (en) * 2017-02-03 2018-08-09 Arcelik Anonim Sirketi A washer-dryer utilizing the volume inside the door
CN106637818A (zh) * 2017-02-27 2017-05-10 北京哈密瓜科技有限公司 一种超声波滚筒洗衣机
CN111118824A (zh) * 2018-10-30 2020-05-08 无锡小天鹅电器有限公司 超声波发生器和清洁装置
EP3910104A4 (de) * 2019-01-09 2022-02-23 TCL Home Appliances (Hefei) Co., Ltd. Waschmaschinenanordnung
US11585040B2 (en) 2019-01-09 2023-02-21 Tcl Home Appliances (Hefei) Co., Ltd. Washing machine assembly
CN113046985A (zh) * 2019-12-27 2021-06-29 佛山市云米电器科技有限公司 衣物清洗方法、滚筒洗衣机
CN111411472A (zh) * 2020-04-01 2020-07-14 南京工业职业技术学院 一种智能袜子洗烘一体机
CN113882113A (zh) * 2020-07-02 2022-01-04 Id 株式会社 滚筒洗衣机的超声波产生单元及利用其的具有超声波产生功能的滚筒洗衣机
RU205742U1 (ru) * 2021-04-16 2021-08-06 Игорь Анатольевич Страбыкин Ультразвуковая стиральная машина

Also Published As

Publication number Publication date
IT1201781B (it) 1989-02-02
IT8645740A0 (it) 1986-08-28

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