EP0534381A1 - Discharge device for washing machines and the like - Google Patents
Discharge device for washing machines and the like Download PDFInfo
- Publication number
- EP0534381A1 EP0534381A1 EP92116239A EP92116239A EP0534381A1 EP 0534381 A1 EP0534381 A1 EP 0534381A1 EP 92116239 A EP92116239 A EP 92116239A EP 92116239 A EP92116239 A EP 92116239A EP 0534381 A1 EP0534381 A1 EP 0534381A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tub
- impeller
- pump
- filter
- 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.)
- Granted
Links
Images
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 utility model 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.
- the main object of the present utility model 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 body of the pump 11, and is to contain the centrifugal impeller 12.
- the tubular projection 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 tubular projection.
- the pump 11 comprises a support means 14 to be connected to the tubular projection 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 tubular projection 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 tubular projection 9.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
- This utility model relates in general to a washing machine and the like and more particularly to the discharge device for the tub of such a machine.
- In washing machines and the like, 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.
- The main object of the present utility model 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.
- This and further objects which will be more apparent from the detailed description given hereinafter are attained according to the present utility model in that 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 utility model will be more apparent from the detailed description given hereinafter by way of non-limiting example with reference to the accompanying drawings, in which:
- Figure 1 is a schematic sectional view of the discharge part of a washing machine or the like;
- Figure 2 is a view thereof in the direction of the arow A of Figure 1;
- Figure 3 is a detailed side elevational view of the removable connection between the pump drive motor and the tub.
- In the figures the
reference numeral 1 indicates a conventional rotating drum of a washing machine or the like. The drum in mounted in aplastics tub 2 and is provided with adoor 3 for access to afilter 4 formed integrally with thetub 2. Thefilter 4 is defined by an annular pocket 5 which surrounds acentral part 6 projecting towards the interior of the tub and defining a discharge hole 7 the inlet of which is covered by a filteringmesh structure 8 also integral with 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 body of the
pump 11, and is to contain thecentrifugal impeller 12. - The tubular projection 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 tubular projection. - The
pump 11 comprises a support means 14 to be connected to thetubular projection 9, this means carrying anelectric motor 15, itsdrive shaft 16 and theimpeller 12. A raisedcentral part 17 of themeans 14 delimits the compartment in which the impeller operates and which is sealed by interposing aconventional gasket 18. - The
means 14 comprises a surrounding edge orflange 19 which carries a number, equal to the number ofprojections 10, of angularly equidistant hook-shaped appendices 20, thecavity 21 of which is intended to engage one of the projections 10 (see Figure 3) to removably connect the unit formed by themotor 15,shaft 10,impeller 12 and means 14 to thetub 2 via thetubular projection 9. - A discharge hose, not shown, is connected to the
nozzle 13. - To connect said unit to the tub, it is firstly mounted on the
tubular projection 9 and is then rotated until its hook-shaped appendices 20 engage theprojections 10. The reverse procedure is used for disconnection. - The 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 thetubular projection 9.
Claims (7)
- A discharge device for a washing machine and the like comprising a plastics tub, the device comprising a discharge port provided in the tub, a filter and a pump consisting of a motor, casing and impeller, characterised in that the pump body (9) and filter (4) form an integral part of the tub (2), the pump motor (15) together with the impeller (12) being connected, preferably removably, to said tub (2).
- A device as claimed in claim 1, characterised in that the motor (15) together with the impeller (12) is connected to the tub (2) by way of the pump casing (9).
- A device as claimed in the preceding claims, characterised in that the pump casing (9) is formed from a tubular projection which is provided on the tub (2) and comprises at its inlet the filter (4).
- A device as claimed in the preceding claims, characterised in that the filter (4) comprises an annular recess (5) surrounding a raised portion (6) defining a passageway (7) the mouth of which is covered by a mesh structure (8).
- A device as claimed in the preceding claims, characterised in that the motor (15) and impeller (12) are supported by a support means (14) which together with the casing (9) defines the compartment in which the impeller (12) operates.
- A device as claimed in the preceding claims, characterised in that the casing (9) is provided with a discharge nozzle (13).
- A device as claimed in the preceding claims, characterised in that the support means (14) is connected to the pump casing (9) by an insertion joint (10, 20, 21), or by screwing on, or by means of screws.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI910845U IT221916Z2 (en) | 1991-09-27 | 1991-09-27 | DISCHARGE DEVICE FOR WASHING MACHINES AND SIMILAR |
ITMI910845U | 1991-09-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0534381A1 true EP0534381A1 (en) | 1993-03-31 |
EP0534381B1 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 (en) |
DE (1) | DE69221977T2 (en) |
IT (1) | IT221916Z2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2818669A1 (en) * | 2000-12-26 | 2002-06-28 | Ciapem | Device for re-circulating a fluid, especially water, in a clothes washing machine, has recirculating pump that draws water in wash tub to reintroduce it |
WO2017100895A1 (en) * | 2015-12-14 | 2017-06-22 | Electrolux Do Brasil S.A. | Quick coupling device for adjusting a drain pump body in a washing machine |
EP4234793A1 (en) * | 2022-02-28 | 2023-08-30 | Whirlpool Corporation | Laundry treating appliance with foreign object barrier |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1783263A3 (en) * | 2005-11-04 | 2008-05-07 | Fisher & Paykel Appliances Limited | Integrated washing machine pump |
EP2405050A1 (en) | 2010-07-08 | 2012-01-11 | Electrolux Home Products Corporation N.V. | Washing machine |
Citations (5)
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 (en) * | 1967-12-14 | 1971-04-15 | Licentia Gmbh | Container or housing for household appliances, in particular for washing machines, dishwashers or the like. |
EP0152745A2 (en) * | 1984-02-13 | 1985-08-28 | INDUSTRIE ZANUSSI S.p.A. | Plastic tub for a laundry washing machine |
DE3443166A1 (en) * | 1984-11-27 | 1986-05-28 | Miele & Cie GmbH & Co, 4830 Gütersloh | Dishwasher having an emptying pump and a non-return valve |
EP0267837A1 (en) * | 1986-10-28 | 1988-05-18 | Ciapem | Washing machine with recirculation and discharge pumps |
-
1991
- 1991-09-27 IT ITMI910845U patent/IT221916Z2/en active IP Right Grant
-
1992
- 1992-09-23 DE DE69221977T patent/DE69221977T2/en not_active Expired - Fee Related
- 1992-09-23 EP EP92116239A patent/EP0534381B1/en not_active Expired - Lifetime
Patent Citations (5)
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 (en) * | 1967-12-14 | 1971-04-15 | Licentia Gmbh | Container or housing for household appliances, in particular for washing machines, dishwashers or the like. |
EP0152745A2 (en) * | 1984-02-13 | 1985-08-28 | INDUSTRIE ZANUSSI S.p.A. | Plastic tub for a laundry washing machine |
DE3443166A1 (en) * | 1984-11-27 | 1986-05-28 | Miele & Cie GmbH & Co, 4830 Gütersloh | Dishwasher having an emptying pump and a non-return valve |
EP0267837A1 (en) * | 1986-10-28 | 1988-05-18 | Ciapem | Washing machine with recirculation and discharge pumps |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2818669A1 (en) * | 2000-12-26 | 2002-06-28 | Ciapem | Device for re-circulating a fluid, especially water, in a clothes washing machine, has recirculating pump that draws water in wash tub to reintroduce it |
WO2017100895A1 (en) * | 2015-12-14 | 2017-06-22 | Electrolux Do Brasil S.A. | Quick coupling device for adjusting a drain pump body in a washing machine |
EP4234793A1 (en) * | 2022-02-28 | 2023-08-30 | Whirlpool Corporation | Laundry treating appliance with foreign object barrier |
US20230272575A1 (en) * | 2022-02-28 | 2023-08-31 | Whirlpool Corporation | Laundry treating appliance with foreign object barrier |
Also Published As
Publication number | Publication date |
---|---|
ITMI910845V0 (en) | 1991-09-27 |
DE69221977D1 (en) | 1997-10-09 |
DE69221977T2 (en) | 1998-02-12 |
ITMI910845U1 (en) | 1993-03-27 |
IT221916Z2 (en) | 1994-12-29 |
EP0534381B1 (en) | 1997-09-03 |
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