EP0404253A1 - Machine à laver - Google Patents

Machine à laver Download PDF

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Publication number
EP0404253A1
EP0404253A1 EP90201584A EP90201584A EP0404253A1 EP 0404253 A1 EP0404253 A1 EP 0404253A1 EP 90201584 A EP90201584 A EP 90201584A EP 90201584 A EP90201584 A EP 90201584A EP 0404253 A1 EP0404253 A1 EP 0404253A1
Authority
EP
European Patent Office
Prior art keywords
washing
tub
drum
pump
washing machine
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Withdrawn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
EP90201584A
Other languages
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.)
OCEAN SpA
Original Assignee
OCEAN 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 OCEAN SpA filed Critical OCEAN SpA
Publication of EP0404253A1 publication Critical patent/EP0404253A1/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Withdrawn legal-status Critical Current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

Definitions

  • the rotary drum is partially submerged in the washing liquid and its rotation consequently causes the washing to be rhythmically submerged with a highly satisfactory mechanical soaking and cleansing action, similar to that which occurs when washing by hand.
  • This method has the disadvantage of calling for relatively large quantities of water and, consequently, of electric power for heating it, as well as detergent.
  • the washing liquid is sprayed inside the rotary drum, so that the soaking and washing action is achieved by the washing liquid falling onto the washing.
  • the general scope of this invention is to obviate the aforementioned problems by providing a washing machine which operates with relatively small quantities of water, but at the same time has the advantages of washing by immersion.
  • a washing machine of the type comprising a substantially cylindrical horizontal tub, containing the washing liquid, within which rotates a drum with a peripherally perforated wall, containing the washing, which is characterized by the fact that the lower portion of the lateral wall of the tub is provided with an aperture to which is tightly secured an intake duct of a pump whose delivery is conveyed to at least one duct which passes tightly through a substantially lower portion of the drum in order to wash the washing by directing jets of washing liquid contained in the tub, against the perforated wall, when the pump is actuated.
  • a washing machine 10 (the rest of which is known and therefore not shown) comprises a tub 11 in which rotates a horizontal cylindrical and peripherally perforated drum 12 containing the washing.
  • the machine comprises a device 15 with a first duct 13 tightly connected to the bottom of the tub which constitutes the intake of an electric pump 14 of known technique with delivery to outlet ducts 16 and 17 which are also tightly connected to the bottom of the tub so as to direct the water expelled by the pump against a substantially lower portion of the drum.
  • the ducts 13, 16 and 17 and the pump 14 are advantageously made in one rigid piece, so that the device 15 can be easily fitted by securing the ducts to the tub, for example by means of flanges and interposed seals, so as to enable it to be removed whenever necessary.
  • the level of the washing liquid in the tub (said liquid being of different composition according to the washing phase; for example, water and detergent or clean rinsing water) can be kept below the drum and, by operating the pump of the device 15, jets of washing liquid are directed against the drum through the ducts 16 and 17 whose ends are substantially above the level of the liquid in the tub. It is thus possible to obtain a pressure of liquid on the washing contained in it due to kinetic energy, with an effect substantially similar to what would occur if the quantity of liquid in the tub were to be very much higher and consequently reached the contents of the drum with a certain hydrostatic pressure, thereby achieving a mechanical washing action with a satisfactory detergent effect.
  • the thrust of the jets against the drum also enables a certain amount of washing liquid to be distributed both by the simple rotation of the perforated drum itself, and by means of systems of known technique such as perforated cams (even though these elements do not touch the actual surface of the water in the tub), so as to also obtain a sprinkling action on the washing.
  • Means of known technique and consequently not shown since they are easily imaginable by the technician (such as, for example, pressure switches connected to solenoid valves) can advantageously be provided to control the introduction of water into the tub in order to maintain the level in the latter substantially constant, so as to compensate the absorption of liquid by the washing.
  • the delivery ducts of the pump are shown as being two in number whereas they can obviously be higher or lower in number.
  • jet recycling phases can be used either in addition to or as an alternative to normal washing phases of known technique.
  • the pump device can moreover be advantageously integrated with other devices such as the water and detergent inlet, outlet, heating elements, connections for pressure switches and thermostats, etc., as described in a copending application on behalf of the same Applicant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP90201584A 1989-06-23 1990-06-18 Machine à laver Withdrawn EP0404253A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2096989 1989-06-23
IT8920969A IT1230907B (it) 1989-06-23 1989-06-23 Macchina lavabiancheria perfezionata

Publications (1)

Publication Number Publication Date
EP0404253A1 true EP0404253A1 (fr) 1990-12-27

Family

ID=11174773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90201584A Withdrawn EP0404253A1 (fr) 1989-06-23 1990-06-18 Machine à laver

Country Status (2)

Country Link
EP (1) EP0404253A1 (fr)
IT (1) IT1230907B (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU665430B2 (en) * 1992-07-29 1996-01-04 N.V. Organon 17-spiromethylene steroids
KR100393994B1 (ko) * 2000-10-19 2003-08-09 엘지전자 주식회사 세탁기의 세탁수 재순환 장치
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1588283A1 (de) * 1967-05-06 1970-05-14 Hanning Elektro Werke Durch einen Elektromotor angetriebene Pumpe,insbesondere fuer Geschirrspuelmaschinen
EP0222264A2 (fr) * 1985-11-06 1987-05-20 INDUSTRIE ZANUSSI S.p.A. Machine à laver le linge
DE3627732A1 (de) * 1986-08-16 1988-02-18 Ego Italiana Foerdereinrichtung fuer fliessstoffe, insbesondere waschloesungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1588283A1 (de) * 1967-05-06 1970-05-14 Hanning Elektro Werke Durch einen Elektromotor angetriebene Pumpe,insbesondere fuer Geschirrspuelmaschinen
EP0222264A2 (fr) * 1985-11-06 1987-05-20 INDUSTRIE ZANUSSI S.p.A. Machine à laver le linge
DE3627732A1 (de) * 1986-08-16 1988-02-18 Ego Italiana Foerdereinrichtung fuer fliessstoffe, insbesondere waschloesungen

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU665430B2 (en) * 1992-07-29 1996-01-04 N.V. Organon 17-spiromethylene steroids
KR100393994B1 (ko) * 2000-10-19 2003-08-09 엘지전자 주식회사 세탁기의 세탁수 재순환 장치
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7904981B2 (en) 2006-08-15 2011-03-15 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7913339B2 (en) 2006-08-15 2011-03-29 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US11993886B2 (en) 2007-05-07 2024-05-28 Whirlpool Corporation Method for controlling a household washing machine
US10844533B2 (en) 2007-05-07 2020-11-24 Whirlpool Corporation Method for controlling a household washing machine
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator

Also Published As

Publication number Publication date
IT1230907B (it) 1991-11-08
IT8920969A0 (it) 1989-06-23

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