EP0610876A1 - Machine à laver améliorée - Google Patents

Machine à laver améliorée Download PDF

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Publication number
EP0610876A1
EP0610876A1 EP94101871A EP94101871A EP0610876A1 EP 0610876 A1 EP0610876 A1 EP 0610876A1 EP 94101871 A EP94101871 A EP 94101871A EP 94101871 A EP94101871 A EP 94101871A EP 0610876 A1 EP0610876 A1 EP 0610876A1
Authority
EP
European Patent Office
Prior art keywords
tube
washing machine
tub
pump
wash
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Withdrawn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
EP94101871A
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German (de)
English (en)
Inventor
Giovanni Spadoni
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.)
IAR-SILTAL SpA
Original Assignee
IAR-SILTAL 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 IAR-SILTAL SpA filed Critical IAR-SILTAL SpA
Publication of EP0610876A1 publication Critical patent/EP0610876A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • D06F39/086—Arrangements for avoiding detergent wastage in the discharge conduit

Definitions

  • This invention relates to an improved washing machine.
  • this invention relates to an improved washing machine provided with devices for the recirculation of the washing water where the detergent has been preliminarily dissolved.
  • Different types of rotatory basket washing machines, which perform the washing operations according to different methods, are known to prior art.
  • the most traditional method performs washing by repeated immersion of the linen into the water contained on the bottom of the machine.
  • the continuous rotation, intermittent and in alternate direction, of the basket causes the linen to move within said basket and to plunge repeatedly into the washing fluid.
  • a second method which also comprises a rotatory basket and the systematic immersion of the linen into the washing water, involves the presence of special devices which convey part of the water from the bottom of the wash-tub upwards, to unload it on to the linen, in order to achieve, at least partly, a so-called aspersion washing.
  • the washing water which is caused to recirculate in the wash-tub, is run through a pump into the drilled basket in the form of jets of fluid.
  • a first drawback which concerns in general all of the known washing machines, arises from the fact that the detergent introduced into the wash-tube through the traditional cup, gets lost to a large extent through the discharge pipe. Besides, the detergent requires in general a rather long time to fully dissolve and to be therefore capable of developing an efficacious activity on the linen.
  • the washing machine described in such application comprises a device which allows to prevent in the first place the dispersal of a part of the detergent in the tub, permitting in the same time the almost immediate and complete dissolution of the detergent in the washing water, even in the presence of cold water only.
  • An object of this invention is to further improve the washing machine subject matter of the preceding patent application, such as to obviate all of the aforementioned drawbacks.
  • an object of this invention is to provide an improved washing machine equipped with devices suitable to rapidly and completely dissolve the detergent in the water and to convey the pressurized washing fluid directly on to the linen contained in the drilled basket.
  • a further object of this invention is to provide an improved washing machine in which, during some stages of the washing or prewashing cycle, the pressurized water is directly conveyed on to the linen which is not caused to move by the rotation of the drilled basket.
  • Still a further object of this invention is to provide an improved washing machine capable of carrying out a complete washing of linen by means of cycles having a duration significantly shorter that the cycles required by traditional machines.
  • a further not least object of this invention is to provide an improved washing machine capable of ensuring a high degree of reliability and a long work life, and also such as to be easily and economically fabricated.
  • an improved washing machine comprising: a casing from metal sheet; a cylindrical wash-tub housed in said casing; a drilled gasket which rotates in said wash-tub; and equipped with a motor and the relevant motion transmission gears; a door with a porthole circumscribed by a peripheral bellows-gasket; a detergent-holding cup connected through a tube to said wash-tub; a pump located in the lower part of the wash-tub and connected to same by means of a mouthpiece; a discharge pipe provided with an hydraulic air vessel, connected on one side to the discharge mouthpiece and, on the opposite side, to the detergent cup by means of a tube provided with a valve or an electro-valve; and at least a tube branching from said discharge pipe and which connects said discharge pipe with an opening circumscribing the door porthole.
  • Fig. 1 shows the schematic view of a preferred, non limitative embodiment.
  • the improved washing machine subject matter of this invention comprises a casing from metal sheet (10), which incorporates an horizontal axis traditional cylindrical wash-tub (12).
  • a basket (14) is housed which is provided with a plurality of peripheral holes, and which is caused to rotate by a generical motor and the relevant connection and transmission gears of a known type (not shown).
  • Wash-tub (12) is provided with a front door (16) with a porthole (18), through which the linen to be washed is introduced into basket (14).
  • Door (16) is perimetrally circumscribed by a bellows-tight-gasket (40) or the like, made preferably from rubber and fastened, with known means, on one end to the front wall of the washing machine, and on the opposite end to the wash-tub (12).
  • the washing machine subject matter of this invention comprises also a traditional detergent-holder (20), located preferably and by way of example in correspondence of the upper front of the machine.
  • Said container or detergent-holding cup (20) is provided, in correspondence of its lower basis (20'), with an opening (22) which connects said container (20) to wash-tub (12) and communicates with the hollow space where the drilled basket rotates (14).
  • a mouthpiece (24) is provided opposing opening (22) relatively to the rotation axis of basket (14), on the bottom of wash-tub (12).
  • a pump (26) is connectd to the free end of said mouthpiece (24).
  • the means are connected which allow the full recovery and rapid dissolution of the detergent introduced into wash-tub (12) through cup (20). Said means, which constitute the device for the detergent recovery and dissolution, are described in the co-pending Italian patent application nr. Mi93A000231, filed on February 10, 1993, to which reference is made for a better understanding of its structural and functional characteristics.
  • Said device for the recovery and dissolution of the detergent comprises a pipe (28) which connects pump (26) of a traditional type, such as for instance a lift and force type pump, to an hydraulic air vessel (30).
  • Said hydraulic air vessel (30) is connected at its upper end, opposite to the one connected to the pump, to a tube (32), which debouches in the detergent-holding cup (20), and, in opposing position, to a discharge mouthpiece (34).
  • a valve or electro-valve (36) is provided along tube (32).
  • the detergent introduced into wash-tub (12) through cup (20) is dragged by the water into mouthpiece (24); pump (26), pulse-activated, alternately pushes the water with the detergent into the hydraulic air vessel (30).
  • pump (26) is not activated, the water with the detergent runs back into wash-tub (12). In this way the detergent is fully recovered and dissolves rapidly and completely in the water.
  • a tube (28) is connected, which develops in the inside of the casing of the washing machine along the base sector and the front of same.
  • the free end (42) of tube (38) reaches the opening housing porthole (18) of door (16), through which the linen is introduced into basket (14).
  • the bellows-gasket (40) which circumscribes perimetrally said opening is provided with a hole through which end (42) of tube (38) passes. Said end (42) is bent towards the inside in the direction of wash-tub (12) and protrudes into said wash-tub and basket (14) contained in the former.
  • Said end (42) may be provided with a revolving nozzle, constituted, for instance, by a cap from plastic material clutched on end (42) of tube (38), or directly obtained from the bellows-gasket (40) during its moulding.
  • valve or electro-valve (44) is provided, preferably located near the connection point of said tube (38) with pipe (28).
  • Said valve or electro-valve (44) has the function of temporarily closing said tube during some stages of the washing or prewashing cycle, as specified later on.
  • the washing machine subject matter of this invention is provided with a tratitional timer which allows users to select the most suitable washing cycle (for instance as concerns the duration and the temperature of water) according to the type of linen to be washed.
  • said timer is advantageously set in such a way as to cause the drilled basket (14) containing the linen to rotate, for the whole washing or prewashing cycle or for shorter periods during said cycle, at a higher speed compared to what happens in the known traditional washing machines.
  • the aforementioned basket is periodically caused to rotate, during the washing or prewashing cycle, at a speed of between 80 and 120 revolutions per minute.
  • the linen to be washed which is contained in the drilled basket (14)
  • the linen is forced, by centrifugal force, to draw up peripherally and to remain in touch with the wall of said gasket.
  • the linen continue to impregnate with the water additivated with the detergent which is in the wash-tub (12), but is not subject to friction, as the articles do not rub among one another.
  • the effect of the quick rotation creates in basket (14) a central distribution chamber for the water recirculated by tube (38), as specified hereafter.
  • cup (20) The detergent contained in cup (20) is pushed by the water current and conveyed in mouthpiece (24) of pump (26).
  • Pump (26) is pulse-activated and conveys repeatedly or continuously the fluid containing the detergent into the hydraulic air vessel (30) through pipe (28).
  • basket (14) is preferably caused to rotate at a speed of between 80 and 120 rotations per minutes, so that, by centrifugal force, the linen adheres to the peripheral surface of the basket.
  • the water containing the fully dissolved detergent is run into basket (14) through end (42) of tube (38) and radially hits the linen under the effect of the centrifugal force created by the rotation of the drilled basket (14).
  • the linen is not subject to friction, while it is at the same time hit by a direct water jet which permits to achieve an efficacious washing.
  • pump (26) which is of a traditional type, pushes water partly into the hydraulic air vessel (30) and partly in tube (38), debouching herefrom into basket (14).
  • the improved washing machine subject matter of this invention allows to carry out linen washing or prewashing cycles which are particularly efficacious as concerns the detergent power, preventing moving linen to be subject to friction.
  • Particularly advantageous is the possibility of recirculating washing water which, run into the drilled basket without intermediate barriers, directly hits linen, penetrating through the fibers and passing repeatedly through it, due to the high rotation speed to which the drilled basket is subject.
  • the washing machine might be equipped with two or more recirculation circuits debouching into the hollow space circumscribed by the door provided with a porthole.
  • the tubes might develop starting from a manifold whatever connected to an hydraulic air vessel, in a different way relatively to what has been disclosed and schematically described hereabove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP94101871A 1993-02-11 1994-02-08 Machine à laver améliorée Withdrawn EP0610876A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI930248A IT1263893B (it) 1993-02-11 1993-02-11 Macchina lavabiancheria perfezionata
ITMI930248 1993-02-11

Publications (1)

Publication Number Publication Date
EP0610876A1 true EP0610876A1 (fr) 1994-08-17

Family

ID=11364969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101871A Withdrawn EP0610876A1 (fr) 1993-02-11 1994-02-08 Machine à laver améliorée

Country Status (2)

Country Link
EP (1) EP0610876A1 (fr)
IT (1) IT1263893B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000045029A (ko) * 1998-12-30 2000-07-15 전주범 세탁기의 세제 용해 장치
EP1087051A3 (fr) * 1995-05-12 2002-05-15 Kabushiki Kaisha Toshiba Machine à laver à tambour et procédé de lavage
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
EP1911870A1 (fr) 2006-10-09 2008-04-16 LG Electronics Inc. Machine à laver
CN100464016C (zh) * 2005-11-15 2009-02-25 李武 一种能使洗衣废水全部回收再用的洗衣机
EP2246469A1 (fr) * 2010-02-16 2010-11-03 V-Zug AG Lave-linge doté d'une pompe à circulation et d'une phase d'essorage
EP2415920A1 (fr) * 2010-08-06 2012-02-08 Fagor, S. Coop. Machine à laver avec une porte avec une cavité pour une charge
CN108998926A (zh) * 2017-06-06 2018-12-14 无锡小天鹅股份有限公司 门密封圈清洗组件及洗衣机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2099462A (en) * 1981-05-21 1982-12-08 Philips Nv Washing machine
WO1985003729A1 (fr) * 1984-02-21 1985-08-29 Miele & Cie. Gmbh & Co. Procede et installation pour laver du linge dans une machine a laver a tambour
FR2560615A1 (fr) * 1984-03-02 1985-09-06 Esswein Sa Machine a laver le linge utilisant une lessive sous forme divisee ou visqueuse
DE3811583A1 (de) * 1988-04-07 1989-10-19 Licentia Gmbh Stirnseitig beschickbare trommelwaschmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2099462A (en) * 1981-05-21 1982-12-08 Philips Nv Washing machine
WO1985003729A1 (fr) * 1984-02-21 1985-08-29 Miele & Cie. Gmbh & Co. Procede et installation pour laver du linge dans une machine a laver a tambour
FR2560615A1 (fr) * 1984-03-02 1985-09-06 Esswein Sa Machine a laver le linge utilisant une lessive sous forme divisee ou visqueuse
DE3811583A1 (de) * 1988-04-07 1989-10-19 Licentia Gmbh Stirnseitig beschickbare trommelwaschmaschine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087051A3 (fr) * 1995-05-12 2002-05-15 Kabushiki Kaisha Toshiba Machine à laver à tambour et procédé de lavage
KR20000045029A (ko) * 1998-12-30 2000-07-15 전주범 세탁기의 세제 용해 장치
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
EP1505194A3 (fr) * 2003-08-08 2006-10-04 Samsung Electronics Co., Ltd. Machine à laver
CN100464016C (zh) * 2005-11-15 2009-02-25 李武 一种能使洗衣废水全部回收再用的洗衣机
EP1911870A1 (fr) 2006-10-09 2008-04-16 LG Electronics Inc. Machine à laver
CN101161912B (zh) * 2006-10-09 2012-02-15 Lg电子株式会社 洗衣机
EP2246469A1 (fr) * 2010-02-16 2010-11-03 V-Zug AG Lave-linge doté d'une pompe à circulation et d'une phase d'essorage
EP2415920A1 (fr) * 2010-08-06 2012-02-08 Fagor, S. Coop. Machine à laver avec une porte avec une cavité pour une charge
CN108998926A (zh) * 2017-06-06 2018-12-14 无锡小天鹅股份有限公司 门密封圈清洗组件及洗衣机

Also Published As

Publication number Publication date
ITMI930248A1 (it) 1994-08-11
ITMI930248A0 (it) 1993-02-11
IT1263893B (it) 1996-09-05

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