EP0318069A1 - Machine à laver avec dispositif pour éviter la perte de détergent - Google Patents

Machine à laver avec dispositif pour éviter la perte de détergent Download PDF

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Publication number
EP0318069A1
EP0318069A1 EP88202134A EP88202134A EP0318069A1 EP 0318069 A1 EP0318069 A1 EP 0318069A1 EP 88202134 A EP88202134 A EP 88202134A EP 88202134 A EP88202134 A EP 88202134A EP 0318069 A1 EP0318069 A1 EP 0318069A1
Authority
EP
European Patent Office
Prior art keywords
fresh water
drain
line
washing machine
water line
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
Application number
EP88202134A
Other languages
German (de)
English (en)
Other versions
EP0318069B1 (fr
Inventor
Alfred Hoffmann
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.)
Bauknecht Hausgeraete GmbH
Whirlpool International BV
Original Assignee
Bauknecht Hausgeraete GmbH
Philips Gloeilampenfabrieken NV
Whirlpool International 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 Bauknecht Hausgeraete GmbH, Philips Gloeilampenfabrieken NV, Whirlpool International BV filed Critical Bauknecht Hausgeraete GmbH
Publication of EP0318069A1 publication Critical patent/EP0318069A1/fr
Application granted granted Critical
Publication of EP0318069B1 publication Critical patent/EP0318069B1/fr
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
    • 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

  • the invention relates to a drum washing machine with a tub which can be supplied with washing liquor via a detergent dispenser box which can be connected to a water supply network via a free flow path and which is connected to a drain pump and a drain line via a bellows-type drain connector, with a valve in the drain connector Float is arranged, which is stable in the closed position by hydrostatic pressure in the drain line and / or a fresh water line.
  • the float In a generic drum washing machine (GM 78 13 695), the float is brought into its closed position by hydrostatic water pressure and held there before the actual water inlet and the washing-in of the detergent into the tub. As a result, the float closes an opening formed in the tub in the area of the drain connector. For washing in of detergent when the valve is closed, it is ensured that no detergent gets into the outlet nozzle before the lye is pumped out via the drain pump and can therefore be lost for a washing process to be carried out. After the lye has been pumped out, the valve can be closed again by lye flowing back out of the drain line in order to build up the required hydrostatic pressure.
  • fresh water supplied to the washing machine is first of all not passed through the detergent dispenser to the tub, but fed to the drain pipe via the fresh water pipe.
  • This fresh water supply increases the hydrostatic pressure for a safe closing of the valve at the beginning of each washing process.
  • This branching off of fresh water supplied requires considerable additional design effort and makes the use of additional control means necessary.
  • the invention has for its object to form a drum washing machine of the type mentioned so that the valve is closed with little constructive and without additional control effort during each wash cycle.
  • the fresh water line has at least one area with separate gaps that run alongside one another in the longitudinal direction. Effective venting of the fresh water line is possible via a first intermediate space, so that leakage water can run off unhindered by rising air quickly into the outlet connection or the associated part of the fresh water line to build up a hydrostatic pressure. It has proven particularly expedient to provide such sections in curved parts of the fresh water line.
  • the lower intermediate space essentially serves to pass on leakage water, while the higher intermediate space essentially forms a ventilation channel.
  • the fresh water line has an overflow opening connected to an inlet line. After a predeterminable liquid level in the fresh water line has been reached, leaking water that continues to flow can thus simply be drained off into the tub. It is also advantageous that the fresh water line is connected to the drain port via a housing part of the drain pump, that the suction side of a pump chamber receiving an impeller is arranged adjacent. This arrangement prevents wash liquor from being pumped into the fresh water line during pumping. However, it can also be advantageous to provide a non-return valve in the fresh water line in order to prevent wash liquor from being pumped into the fresh water line, regardless of how a connection is made between the fresh water line and the outlet connection. In order to connect the fresh water pipe to the drain pipe, it can then be connected directly to this or to the drain pipe, for example.
  • a tub 2 shown rotated by 90 °, is elastically held in a housing 1 in a manner not shown.
  • a drum 3 Inside the tub ters 2, a drum 3 is mounted with a loading opening 4.
  • a detergent dispenser 5 Above the tub 2 there is a detergent dispenser 5, which can be at least partially pulled out of the housing 1 and has chambers for holding detergent or the like. slidably supported. Only one chamber 6 is shown in FIG. 1. Detergent contained in the chambers can be supplied together with fresh water to the tub 2 via an inlet line 7 and an inlet bellows 8.
  • the fresh water comes from a network connection 9 to establish a connection to a water supply network, not shown, via a free flow path 10, first of all in a lid 11 arranged above the detergent dispenser 5, having a cavity 11 substantially complete rinsing out of the detergent, in the manner known, for example, from DE-OS 36 04 674, with fresh water.
  • the tub 2 has an outlet opening 14 to which one end of a bellows-type outlet connector 15 is connected, the other end of which, as shown in FIG. 3, with a chamber 16 of an outlet pump 17 with a drive 18 receiving an impeller connected is.
  • a chamber 16 of an outlet pump 17 with a drive 18 receiving an impeller connected Via an inner drain line 19 connected on the pressure side to the drain pump 17 and an adjoining outer drain line 20, wash liquor can be pumped out of the tub 2 at the end of a wash cycle.
  • washing liquor remaining in the inner drain line 19 can flow back into the drain port 15 via the drain pump 17 and there a float 21 for closing the drain opening 14 against a seal arranged in this area press the button.
  • the float 21 is in its position shown in solid lines in FIG. 1 for closing the valve 22.
  • the float 21 assumes its position shown in broken lines in FIG. 1, in which the valve 22 is open.
  • the float 21 is designed to be substantially frustoconical in shape to match the shape of the drain connector 15. In order to avoid warping of the float 21 and thereby possible leaks in the valve 22, the float 21 has an open hollow shape.
  • the float 21 has good buoyancy properties and can be kept in its closed position after the pumping out of the wash liquor by the hydrostatic pressure of a liquid column with height 23 remaining in the inner drain line 19.
  • the valve 22 prevents, in a known manner, that detergent or the like which enters detergent dispenser 5 through detergent dispenser 5 or the like can get directly into drain pipe 15 without actively participating in the washing process.
  • the drain nozzle 15 is next to the wash liquor left in the inner drain line 19 or the like at the beginning of each washing-in of detergent. Fresh water supplied. In a simple way and without additional control effort This is made possible by the fact that leakage water accumulating on the free flow path 10 via a fresh water line 24 can be fed to a housing part 31 of the drain pump 17 opposite the drive 18 and adjacent to the pump chamber 16.
  • One of the free flow section 10 assigned area 24 'of the fresh water line 24 is formed in the exemplary embodiment as a plastic injection part arranged below an area of the cover 11, to which a further area of the fresh water line 24 forming hose 24' connects.
  • an essentially axial partition 26 is arranged.
  • a between the partition 26 and the lower wall of the area 24 'formed the first intermediate space 27 is used essentially for the forwarding of leakage water, corresponding to flow lines A.
  • a second between the partition 26 and the upper wall of the area 24' formed intermediate space 28 leaves in the fresh water device 24 rising air essentially unhindered, so that an effective ventilation of the fresh water line 24 is given during the inflow of leakage water. It is thus possible for the hydrostatic pressure in the outlet connection 15 to rise rapidly and thus for the valve 22 to be closed quickly.
  • a vent line 29 is provided between the area 24 'and the inner drain line 19.
  • the area 24 In order to allow overflow of leaked water accumulated in the fresh water line 24, the area 24 'has an overflow opening 30 to the inlet line 7.
  • the opening of the fresh water line 24 shown in FIG. 3 into a housing part 31 of the drain pump 17, which is arranged at a distance from the pressure side of the pump 17, ensures that substantially no wash liquor can be conveyed into the area of the fresh water line 24 during pumping. But it can also be arranged in a manner not shown in the fresh water line 24, a check valve, for example when the fresh water line 24 is connected directly to the inner drain line 19 or to the drain port 15 to prevent washing liquor into the fresh water line during pumping 24 is funded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP88202134A 1987-10-09 1988-09-29 Machine à laver avec dispositif pour éviter la perte de détergent Expired - Lifetime EP0318069B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3734117 1987-10-09
DE19873734117 DE3734117A1 (de) 1987-10-09 1987-10-09 Trommelwaschmaschine

Publications (2)

Publication Number Publication Date
EP0318069A1 true EP0318069A1 (fr) 1989-05-31
EP0318069B1 EP0318069B1 (fr) 1992-07-22

Family

ID=6337928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202134A Expired - Lifetime EP0318069B1 (fr) 1987-10-09 1988-09-29 Machine à laver avec dispositif pour éviter la perte de détergent

Country Status (3)

Country Link
EP (1) EP0318069B1 (fr)
DE (2) DE3734117A1 (fr)
ES (1) ES2034165T3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0719884A1 (fr) * 1994-12-29 1996-07-03 Bosch-Siemens HausgerÀ¤te GmbH Machine à laver avec dispositif distributeur de produits de lavage
GB2389121B (en) * 2002-05-31 2005-08-31 Electrolux Home Prod Corp Domestic clothes washing machine
EP1619289A1 (fr) * 2004-07-22 2006-01-25 BSH Bosch und Siemens Hausgeräte GmbH Distributeur de détergent pour appareil domestique à circulation d'eau
WO2013066118A1 (fr) * 2011-11-02 2013-05-10 주식회사 대우일렉트로닉스 Appareil d'alimentation en eau pour machine à laver
EP2746448A1 (fr) * 2012-12-21 2014-06-25 Electrolux Home Products Corporation N.V. Système d'évacuation amélioré pour appareil de traitement du linge
EP3228740A1 (fr) * 2016-04-05 2017-10-11 BSH Hausgeräte GmbH Appareil d'entretien de linge doté d'une commande
WO2020043356A1 (fr) 2018-08-31 2020-03-05 Arcelik Anonim Sirketi Machine à laver à performance de lavage améliorée et son procédé de commande

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1283476B1 (it) * 1996-07-22 1998-04-21 Philco Italiana Procedimento di lavaggio perfezionato per macchina lavabiancheria, e macchina llavabiancheria che attua tale procedimento
DE19637742A1 (de) * 1996-09-16 1998-03-19 Bosch Siemens Hausgeraete Haushalt-Waschmaschine mit Leitungen für die Führung von Wasser und Luft

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2337434A1 (de) * 1973-07-24 1975-02-13 Licentia Gmbh Waschmitteleinspuelvorrichtung fuer waschmaschinen
DE7813695U1 (de) * 1977-05-13 1978-08-31 Industrie A. Zanussi S.P.A., Pordenone, Udine (Italien) Waschmaschine, insbesondere Haushaltswaschmaschine, mit einer Einrichtung zur Verhinderung von Waschmittelverlust
DE3540741A1 (de) * 1985-10-03 1987-04-09 Miele & Cie Waschmaschine oder waschtrockner mit einrichtungen zur vermeidung von waschmittelverlusten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2337434A1 (de) * 1973-07-24 1975-02-13 Licentia Gmbh Waschmitteleinspuelvorrichtung fuer waschmaschinen
DE7813695U1 (de) * 1977-05-13 1978-08-31 Industrie A. Zanussi S.P.A., Pordenone, Udine (Italien) Waschmaschine, insbesondere Haushaltswaschmaschine, mit einer Einrichtung zur Verhinderung von Waschmittelverlust
DE3540741A1 (de) * 1985-10-03 1987-04-09 Miele & Cie Waschmaschine oder waschtrockner mit einrichtungen zur vermeidung von waschmittelverlusten

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0719884A1 (fr) * 1994-12-29 1996-07-03 Bosch-Siemens HausgerÀ¤te GmbH Machine à laver avec dispositif distributeur de produits de lavage
GB2389121B (en) * 2002-05-31 2005-08-31 Electrolux Home Prod Corp Domestic clothes washing machine
EP1619289A1 (fr) * 2004-07-22 2006-01-25 BSH Bosch und Siemens Hausgeräte GmbH Distributeur de détergent pour appareil domestique à circulation d'eau
WO2013066118A1 (fr) * 2011-11-02 2013-05-10 주식회사 대우일렉트로닉스 Appareil d'alimentation en eau pour machine à laver
EP2746448A1 (fr) * 2012-12-21 2014-06-25 Electrolux Home Products Corporation N.V. Système d'évacuation amélioré pour appareil de traitement du linge
WO2014095928A1 (fr) * 2012-12-21 2014-06-26 Electrolux Home Products Corporation N.V. Système de décharge amélioré pour appareil de traitement du linge
EP3228740A1 (fr) * 2016-04-05 2017-10-11 BSH Hausgeräte GmbH Appareil d'entretien de linge doté d'une commande
CN107268242A (zh) * 2016-04-05 2017-10-20 Bsh家用电器有限公司 具有控制装置的衣物护理器具
CN107268242B (zh) * 2016-04-05 2021-01-08 Bsh家用电器有限公司 具有控制装置的衣物护理器具
WO2020043356A1 (fr) 2018-08-31 2020-03-05 Arcelik Anonim Sirketi Machine à laver à performance de lavage améliorée et son procédé de commande

Also Published As

Publication number Publication date
EP0318069B1 (fr) 1992-07-22
DE3873036D1 (de) 1992-08-27
ES2034165T3 (es) 1993-04-01
DE3734117A1 (de) 1989-04-20

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