EP2487289B1 - Pumpvorrichtung für eine Waschmaschine und Waschmaschine - Google Patents

Pumpvorrichtung für eine Waschmaschine und Waschmaschine Download PDF

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Publication number
EP2487289B1
EP2487289B1 EP11401017.6A EP11401017A EP2487289B1 EP 2487289 B1 EP2487289 B1 EP 2487289B1 EP 11401017 A EP11401017 A EP 11401017A EP 2487289 B1 EP2487289 B1 EP 2487289B1
Authority
EP
European Patent Office
Prior art keywords
lid
washing machine
housing
suds container
branch
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.)
Active
Application number
EP11401017.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2487289A1 (de
Inventor
Hermann Bethlehem
Andrea Rottmann
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to ES11401017T priority Critical patent/ES2428730T3/es
Priority to EP11401017.6A priority patent/EP2487289B1/de
Publication of EP2487289A1 publication Critical patent/EP2487289A1/de
Application granted granted Critical
Publication of EP2487289B1 publication Critical patent/EP2487289B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F39/085—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

  • the invention relates to a pumping device for draining, pumping or flooding of washing liquid from the tub of a washing machine, comprising a filter device with a housing and arranged in a cylindrical receiving space of the housing insert part, which is accessible via an opening, wherein the opening by means of a in the housing screw-in lid and an arranged between the lid and a system in the receiving space annular seal is liquid-tightly closed.
  • a washing machine which contains a drain pump as drainage device.
  • the drain device comprises a housing into which a filter has been inserted. Through an opening, the filter is accessible for cleaning purposes, the opening being sealed liquid-tight with a closure lid.
  • the closure lid includes a pivoting handle with a cam which effects the sealing engagement of the lid with the housing. By turning the filter insert this is released in the opening and can be pulled out. After the cleaning process, care must be taken to ensure that the filter element and the cap are carefully inserted and secured in the intended position to prevent leaking washing liquid during subsequent operation.
  • the insert comprises a ring seal, which is pressed axially against a peripheral edge of the female housing part or pump housing when the cover is pressed, thereby providing sealing action.
  • a further seal adapted to close the exit opening when the insert is rotated by a predetermined angle, here a quarter turn, to return liquid from the exit duct to prevent into the pump.
  • a drain pump for a washing machine which comprises an insert with a filter and a lid.
  • the insert is screwed into the pump housing, comprising a threaded portion.
  • the end of the threaded section pointing towards the pump interior is provided with a circumferential annular seal, which comes into contact axially with a circumferential projection in the receiving space and thereby provides the sealing effect.
  • the insert In all known pumps, the insert must be completely and firmly inserted or screwed into the receiving housing, so that no liquid can leak.
  • wash liquid can run out of the filter housing in the subsequent operation and lead to water damage in the environment of the washing machine. Furthermore, it may happen that in case of insufficient interference fit to a leak, which can leak a lot of liquid from the washing machine.
  • a pump device and a filter device which can be closed by a lid.
  • the lid has a seal which is squeezed when screwed against a stop and so unfolds a radial sealing effect. In a partial opening of the lid, the squeezing effect and thus the tightness decreases.
  • the invention is therefore based on the object to provide a pump for a washing machine with improved safety against water damage.
  • the drain device usually comprises a lint filter which comprises a filter housing and an insert part located therein.
  • the insert To carry out regular maintenance work, the insert must be removed from the filter housing and cleaned or replaced. Thereafter, the insert part must be re-inserted into the housing and the access opening by means of the insert itself or a lid to be sealed liquid-tight.
  • the seal In order to prevent unwanted excessive leakage of water or washing liquid in the subsequent operation, the seal is designed and placed in position so that a radial force is provided against a wall portion of the cylindrical receiving space. The lid or the insert with lid can be unscrewed without tools by the user and screwed in again.
  • the seal is designed so that when unscrewing the lid or the insert no more than 0.5 l of liquid per Minute leak.
  • the seal is designed so that even when unscrewing the lid by a full turn not more than 0.5 liters per minute flow out.
  • the radial sealing effect is achieved in that the seal is formed in profile L-shaped, wherein a first leg for the system in the axial direction and a second, angled leg to the first leg protrudes into the cylindrical portion, and that the second leg to a Having wall portion facing, nose-shaped elevation.
  • an optimal adjustment of the contact pressure between the cover and the cylindrical wall portion in the receiving space can be provided by the dimensioning of the second leg, regardless of the dimensioning of the first leg, which provides the sealing effect due to the axially acting force on the system.
  • a sealing profile for an annular seal is particularly easy to manufacture.
  • the second leg is in this case approximately at right angles to the first leg and a partial, strongly deformable contact region of the second leg is created, with which larger differences in the gap width can be bridged or sealed by this region of the seal.
  • the penetration depth of the second leg into the cylindrical wall section is dimensioned such that it corresponds to the extent of one quarter to one and a quarter of a thread of the screw-in lid. This ensures that when the lid is unscrewed by one turn, a part of the second section protrudes so far into the cylindrical section of the receiving space that a certain tightness is given or no more than 0.5 l of liquid flows out of the opening per minute ,
  • the system in profile comprises a nose-shaped, circumferential projection.
  • the projection can penetrate deep into the sealing material due to its pointed shape, whereby an improved sealing effect is achieved when the lid is completely and firmly screwed into the housing.
  • the invention also relates to a washing machine with a tub, a water supply and a drain device for draining or pumping washing liquid from the tub, comprising a pumping device as described above, to convey liquid through a drain line to the outside.
  • the invention further relates to a washing machine with a tub and a rotatable in the tub, mounted in a horizontal or inclined axis drum, a water supply and a Umflut adopted for circulating washing liquid from the lower region of the tub to the upper portion of the tub or the A drum comprising a pumping device as described above for conveying liquid through a bleed line to the upper portion of the tub or to the drum.
  • the FIG. 1 shows a washing machine 1 with a arranged in the housing 2 or vibrating mounted tub 3, which is provided for receiving the washing liquid.
  • the laundry to be washed can be introduced into a drum 4 rotatably mounted within the tub 3.
  • the laundry can also be placed directly in the tub 3 and moved by stirrers, as is common for example in washing machines of Asian or New Zealand design.
  • the washing machine 1 has a water supply 5, which is opened or closed by the control device 25 depending on the step within a washing program.
  • the washing machine 1 has a drain device 8, which comprises a pump device 12 or a controllable valve, with a filter device 14.
  • a discharge pipe 9 connects the lower region of the tub 3 to the drainage device 8 and opens into the filter housing 14 of the pumping device 12.
  • the drainage device 8 further comprises an outlet line 10 which is led outwardly from the filter housing 14, outside the machine housing 2.
  • the housing wall 2a has an opening 18 (FIG. Fig. 2 ), over which the insert part 16 and a screw cap 19 in the filter device 14 is accessible.
  • the lid 19 is here to handle without tools.
  • Fig. 2 shows in a detailed view of the maintenance case in which the lid 19 is removed with the insert 16 from the filter device 14.
  • the lid 19 is hereby pulled out with the insert 16 from the receiving space 15 in the filter housing 14.
  • the downwardly pivoted flap 2b on the front wall 2a serves to cover the maintenance opening in the housing wall 2a flush with the surface. All position information refers to the operational installation position of the washing machine. 1
  • Fig. 3 shows the filter housing 14 with insert 16 and lid 19 in a perspective view.
  • the insert 16 is here designed as a so-called foreign body trap and thus provides the filter function. Other filter characteristics may also be included as needed be provided a suitably trained insert.
  • the insert member 16 is inserted in a cylindrical receiving space 15, wherein in this case a part of the externally accessible opening 18 protrudes.
  • the insert 16 is provided with a lid 19 having a thread 17 a for screwing into the internal thread 17 b in the receiving space 15.
  • To seal the lid 19 comprises a seal 20 which is pressed against a system 22 in the receiving space 15 when the lid 20 is screwed tight.
  • the filter housing 14 further has an inlet pipe 9a for the drain pipe 9 and an outlet nozzle 10a for the outlet pipe 10.
  • Fig. 4 shows the pumping device 12 from the lid-side front view.
  • the cover 20 is in this case screwed into the filter housing 14.
  • a section A - A is in Fig. 5 shown.
  • the insert 16 is located in the receiving space 15.
  • the receiving space 15 has at its free end face an opening 18 which is closed with the lid 19.
  • In the end region of the receiving space 15 has an internal thread 17b, which cooperates with the external thread 17a of the lid 19 and provides the Verschraub sadness.
  • Arranged on the lid 19 is an annular seal 20, which is pressed against a projecting, circumferential abutment 22 in the receiving space 15 and thereby provides the sealing closure.
  • the pump 13 is mounted to form a compact pumping device 12.
  • the outlet port 10a and the inlet port 9a can also be seen.
  • the shape of the seal 20 is in the detail view in Fig. 6 to recognize.
  • the seal 20 is formed in the sectional view or in the profile L-shaped, wherein a first leg 20a rests in the axial direction of the rotating system 22 in the receiving space 15 and is pressed there.
  • the second leg 20 b projects into a limited area 15 a in the receiving space 15 and is provided with an oversize to provide an interference fit between a cylindrical portion 19 a of the lid 19 and the inner wall of the receiving space 15.
  • the second leg 20b in this case has a nose-shaped elevation 20c to the inner wall of the receiving space 15, which, like the ring seal itself, is circumferentially formed.
  • the system 22 is also provided with a circumferential, nose-shaped elevation 23, which can penetrate slightly further into the material of the elastic seal 20 when the lid 19 is screwed firmly into the housing. The sealing effect is thereby improved.
  • Fig. 7 shows a washing machine 1 with a drain device 8, and a flooding device 24.
  • the flooding device 24 includes its own pumping device 12a, which is constructed in the same or similar manner, as described above. Instead of the outlet line a Umflut effet 24 a is connected to the filter housing 14 a, through which the washing liquid in the upper portion of the drum 4 organ. of the tub 3 can be pumped. In this arrangement, both pumping devices 12, 12a through an opening 2c in a housing wall, here the front wall 2a, accessible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP11401017.6A 2011-02-14 2011-02-14 Pumpvorrichtung für eine Waschmaschine und Waschmaschine Active EP2487289B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES11401017T ES2428730T3 (es) 2011-02-14 2011-02-14 Equipo de bombeo para una máquina lavadora y máquina lavadora
EP11401017.6A EP2487289B1 (de) 2011-02-14 2011-02-14 Pumpvorrichtung für eine Waschmaschine und Waschmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11401017.6A EP2487289B1 (de) 2011-02-14 2011-02-14 Pumpvorrichtung für eine Waschmaschine und Waschmaschine

Publications (2)

Publication Number Publication Date
EP2487289A1 EP2487289A1 (de) 2012-08-15
EP2487289B1 true EP2487289B1 (de) 2013-09-11

Family

ID=44260282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11401017.6A Active EP2487289B1 (de) 2011-02-14 2011-02-14 Pumpvorrichtung für eine Waschmaschine und Waschmaschine

Country Status (2)

Country Link
EP (1) EP2487289B1 (es)
ES (1) ES2428730T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107237090B (zh) * 2016-03-28 2021-03-26 青岛海尔洗涤电器有限公司 一种排水过滤器及采用其的洗衣机
CN109957937B (zh) * 2017-12-22 2023-02-03 青岛胶南海尔洗衣机有限公司 一种洗衣机循环过滤装置及洗衣机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH542309A (fr) * 1972-03-16 1973-09-30 Airnaf S A Corps de pompe pour machine à laver
IT1040087B (it) * 1975-07-25 1979-12-20 Eurodomestici Ind Riunite Pompa di drenaggio autopulente in particolare per macchinelavatrici
IT7921337V0 (it) * 1979-04-12 1979-04-12 Siltal Filtro ispezionabile per macchina lavatrice, comprendente un dispositivo di sicurezza atto ad evitare eventuali aperture del filtro non volute.
DE3731371C2 (de) 1987-09-18 1994-07-07 Miele & Cie Waschmaschine oder Waschtrockner mit Laugenpumpe und Flusenfilter
KR20050106259A (ko) 2004-05-04 2005-11-09 삼성전자주식회사 배수 케이싱을 구비한 세탁기

Also Published As

Publication number Publication date
EP2487289A1 (de) 2012-08-15
ES2428730T3 (es) 2013-11-11

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