EP0534381B1 - Discharge device for washing machines and the like - Google Patents

Discharge device for washing machines and the like Download PDF

Info

Publication number
EP0534381B1
EP0534381B1 EP92116239A EP92116239A EP0534381B1 EP 0534381 B1 EP0534381 B1 EP 0534381B1 EP 92116239 A EP92116239 A EP 92116239A EP 92116239 A EP92116239 A EP 92116239A EP 0534381 B1 EP0534381 B1 EP 0534381B1
Authority
EP
European Patent Office
Prior art keywords
tub
pump
impeller
filter
pump casing
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.)
Expired - Lifetime
Application number
EP92116239A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0534381A1 (en
Inventor
Loris c/o Wirlpool Italia s.r.l. Buccolini
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.)
Whirlpool Europe BV
Original Assignee
Whirlpool Europe BV
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 Whirlpool Europe BV filed Critical Whirlpool Europe BV
Publication of EP0534381A1 publication Critical patent/EP0534381A1/en
Application granted granted Critical
Publication of EP0534381B1 publication Critical patent/EP0534381B1/en
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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • 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 
    • D06F39/10—Filtering arrangements

Definitions

  • This invention relates in general to a washing machine and the like and more particularly to the discharge device for the tub of such a machine.
  • a discharge device is associated with the tub and comprises a discharge port provided in the tub, a bellows connected at one end to said port, a discharge pump (comprising a motor, pump body and impeller) connected to the other end of said bellows, and a filter positioned upstream of said pump.
  • EP-A-0 267 837 discloses a discharge device for a washing machine comprising a plastic tub having a cup-shaped portion and a front lid.
  • the device described in such document comprises a pump body which is an integral part of the cup-shaped portion of the tub and having an horizontal axis.
  • the main object of the present invention is to reduce the number of components used in the discharge device, to simplify the assembly of this device and to reduce the pressure drop therethrough.
  • both the filter and the pump body form an integral part of the tub, the pump motor together with the impeller being directly connected, preferably removably, to said tub.
  • the reference numeral 1 indicates a conventional rotating drum of a washing machine or the like.
  • the drum in mounted in a plastics tub 2 and is provided with a door 3 for access to a filter 4 formed integrally with the tub 2.
  • the filter 4 is defined by an annular pocket 5 which surrounds a central part 6 projecting towards the interior of the tub and defining a discharge hole 7 the inlet of which is covered by a filtering mesh structure 8 also integral with the tub.
  • the tub Towards the outside, beyond the filter, the tub extends in the form of a cylindrical tubular projection 9 which on its outer periphery comprises pin-shaped radial projections, for example four in number, spaced equiangularly apart.
  • This tubular projection forms the casing 9 of the pump 11, and is to contain the centrifugal impeller 12.
  • the pump casing 9 also comprises a discharge nozzle 13, which can either be integral with the tub or be in the form of a separate piece welded or otherwise fixed into a hole in the pump casing.
  • the pump 11 comprises a support means 14 to be connected to the pump casing 9, this means carrying an electric motor 15, its drive shaft 16 and the impeller 12.
  • a raised central part 17 of the means 14 delimits the compartment in which the impeller operates and which is sealed by interposing a conventional gasket 18.
  • the means 14 comprises a surrounding edge or flange 19 which carries a number, equal to the number of projections 10, of angularly equidistant hook-shaped appendices 20, the cavity 21 of which is intended to engage one of the projections 10 (see Figure 3) to removably connect the unit formed by the motor 15, shaft 10, impeller 12 and means 14 to the tub 2 via the pump casing 9.
  • a discharge hose is connected to the nozzle 13.
  • connection between said unit and the tub can also be made by screws, in which case the projections 10 and hook-shaped appendices 20 are not provided, these latter being for example replaced by lugs for receiving the screws, these lugs surrounding parts of the pump casing 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP92116239A 1991-09-27 1992-09-23 Discharge device for washing machines and the like Expired - Lifetime EP0534381B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI910845U 1991-09-27
ITMI910845U IT221916Z2 (it) 1991-09-27 1991-09-27 Dispositivo di scarico per macchine lavabiancheria e simili

Publications (2)

Publication Number Publication Date
EP0534381A1 EP0534381A1 (en) 1993-03-31
EP0534381B1 true EP0534381B1 (en) 1997-09-03

Family

ID=11359305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116239A Expired - Lifetime EP0534381B1 (en) 1991-09-27 1992-09-23 Discharge device for washing machines and the like

Country Status (3)

Country Link
EP (1) EP0534381B1 (it)
DE (1) DE69221977T2 (it)
IT (1) IT221916Z2 (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007053041A1 (en) * 2005-11-04 2007-05-10 Fisher & Paykel Appliances Limited Integrated washing machine pump
EP2405050A1 (en) 2010-07-08 2012-01-11 Electrolux Home Products Corporation N.V. Washing machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818669B1 (fr) * 2000-12-26 2003-04-25 Ciapem Dispositif permettant de realiser une recirculation de fluide destine notamment a un lave-linge
BR102015031315B1 (pt) * 2015-12-14 2021-10-13 Electrolux Do Brasil S.A. Máquina de lavar roupa compreendendo um dispositivo de engate rápido para ajuste do corpo de uma bomba de drenagem
US20230272575A1 (en) * 2022-02-28 2023-08-31 Whirlpool Corporation Laundry treating appliance with foreign object barrier

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB706548A (en) * 1951-12-27 1954-03-31 Gen Electric Improvements relating to strainers for the drain conduits of clothes-washing machines and like receptacles
DE1585822A1 (de) * 1967-12-14 1971-04-15 Licentia Gmbh Behaelter bzw. Gehaeuse fuer Haushaltsgeraete,insbesondere fuer Wasch-,Geschirrspuelmaschinen od.dgl.
IT1181072B (it) * 1984-02-13 1987-09-23 Zanussi A Spa Industrie Vasca in materia plastica per macchine lavabiancheria
DE3443166A1 (de) * 1984-11-27 1986-05-28 Miele & Cie GmbH & Co, 4830 Gütersloh Geschirrspuelmaschine mit einer entleerungspumpe und einem rueckschlagventil
FR2605652B1 (fr) * 1986-10-28 1989-03-31 Ciapem Lave-linge a pompes de recyclage et de vidange

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007053041A1 (en) * 2005-11-04 2007-05-10 Fisher & Paykel Appliances Limited Integrated washing machine pump
EP2405050A1 (en) 2010-07-08 2012-01-11 Electrolux Home Products Corporation N.V. Washing machine

Also Published As

Publication number Publication date
DE69221977D1 (de) 1997-10-09
EP0534381A1 (en) 1993-03-31
IT221916Z2 (it) 1994-12-29
ITMI910845V0 (it) 1991-09-27
ITMI910845U1 (it) 1993-03-27
DE69221977T2 (de) 1998-02-12

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