EP3172372B1 - Appareil ménager doté d'une conduite pour liquide - Google Patents

Appareil ménager doté d'une conduite pour liquide Download PDF

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Publication number
EP3172372B1
EP3172372B1 EP15736848.1A EP15736848A EP3172372B1 EP 3172372 B1 EP3172372 B1 EP 3172372B1 EP 15736848 A EP15736848 A EP 15736848A EP 3172372 B1 EP3172372 B1 EP 3172372B1
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EP
European Patent Office
Prior art keywords
liquid
contaminants
thread
household appliance
flow
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
EP15736848.1A
Other languages
German (de)
English (en)
Other versions
EP3172372A1 (fr
Inventor
Hartmut Schaub
Antonio BARRADO FRANCO
Andreas Bischof
Torsten Hasse
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL15736848T priority Critical patent/PL3172372T3/pl
Publication of EP3172372A1 publication Critical patent/EP3172372A1/fr
Application granted granted Critical
Publication of EP3172372B1 publication Critical patent/EP3172372B1/fr
Active 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 
    • D06F39/10—Filtering arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0057—Cleaning of machines parts, e.g. removal of deposits like lime scale or proteins from piping or tub

Definitions

  • the present invention relates to a household appliance with a liquid line.
  • Filamentous contaminants include hair and lint.
  • Fluffs are whole fibers or parts of fibers that have come loose from yarns of fabrics.
  • the mechanical and thermal loading of garments in household appliances e.g. In washing machines, often leads to the release of lint from the existing in the garments threads.
  • the fluff in the water can accumulate and form aggregates of lint.
  • hair of the wearer of the garments is deposited in the washing process in household appliances, causing clumps of hair to form.
  • Filamentous contaminants are thus in a thread-like form, or may comprise clumps of filamentous contaminants.
  • filamentous impurities When a liquid containing filamentous impurities is repeatedly circulated in a domestic appliance, after a certain time, filamentous impurities accumulate at the corners and edges of the components in the pumping circulation. When the accumulated thread-like contaminants have reached a sufficient amount, clumps of thread-like contaminants are formed. These agglomerations hinder the fluid circulation in the pumping system. This leads to a reduction in the flow rate of the pumped liquid and / or to an increase in pressure in the pumping system. If an active surface of a treatment unit, e.g. a heating unit covered by thread-like contaminants, this leads to a reduction or a prevention of the treatment effect of the treatment unit.
  • a treatment unit e.g. a heating unit covered by thread-like contaminants
  • filamentous contaminants are normally entrained in the liquid stream and stick to protrusions that protrude into the liquid stream.
  • clumps which are in the form of long threads of thread-like contaminants. If the threads have reached a sufficient length, then the threads can be thread-like Twist impurities on a side of the projection facing away from the flow by a flapping motion. Due to the firm binding of such a twisted thread of thread-like contaminants to a projection in the liquid flow, the threads can not be removed even by reversing the flow direction of the liquid flow.
  • US Pat. No. 6,402,962 B1 is a washing machine with a pump in the water circulation is known in which a filter can be flushed by reversing the direction of pump rotation.
  • the object is achieved by a household appliance having a liquid line for guiding a liquid, wherein the liquid line has a plate extending in the flow direction, at the front edge in the flow direction thread-like contaminants of the liquid can be added, and in which the household appliance a backwashing means for reversing the flow direction in the liquid conduit to remove the thread-like contaminants from the leading edge.
  • the technical advantage is achieved that attach filamentous impurities in the liquid to the plate.
  • the attachment of thread-like contaminants takes place at the front edge of the plate in the flow direction of the liquid moving in the liquid line. At initially attached thread-like contaminants can accumulate more thread-like contaminants. Thus, accumulations of filamentous impurities form over a longer period of time.
  • the addition of thread-like contaminants to the flow direction plate reduces the number of filamentous contaminants in the fluid flow in the fluid conduit.
  • the plate is made of plastic or metal.
  • a household appliance is a device that is used for household management. This may be a large household appliance, such as a washing machine, a tumble dryer, a dishwasher. But this can also be a small household appliance, such as a water heater, a coffee machine, a food processor or a vacuum cleaner.
  • the liquid line comprises a further plate extending in the flow direction.
  • the technical advantage is achieved that through the further plate another edge in the liquid flow is introduced, attach to the thread-like contaminants from the liquid flow. This increases the likelihood that filamentous contaminants present in the fluid stream will attach to a leading edge of the two plates. As a result, the amount of accumulated thread-like contaminants is increased.
  • the plate extending in the flow direction and the further plate intersect.
  • the advantage is achieved that a stable attachment of the two plates is ensured in the liquid flow. This ensures a reliable accumulation of thread-like contaminants on the plates even at a high flow rate of the liquid in the liquid line. Accumulation of thread-like contaminants may form clumps of filamentous contaminants which project from the plates into the liquid stream.
  • An attachment close to the intersection of the two intersecting plates is advantageous. Due to the spatial proximity of the filamentous contaminants deposited on the various plates near the point of intersection, agglomerations are more easily formed. At these points, a faster and thus more effective deposition of threadlike contaminants takes place. This increases the effectiveness of the attachment of threadlike contaminants to the intersecting plates.
  • the plate extending in the direction of flow and the further plate enclose a 90 ° angle.
  • the technical advantage is achieved that an optimal positioning of the front edge of the plates is ensured in the liquid flow.
  • One factor increases the likelihood that filamentous contaminants present in the fluid stream will attach to one of the leading edges of the plates.
  • the 90 ° angle creates identical areas between the plates through which the liquid flows evenly. This prevents swirling of the liquid from forming on the plates, which increases the flow resistance of the plates.
  • the areas between the plates are sufficiently large so that clumps of filamentous contaminants remote from the plates flow through the areas between the plates without much hindrance to the liquid flow.
  • intersecting plates can be materially interconnected.
  • the intersecting plates may be passed by each other at the point where they intersect at the front or back of the respective plates.
  • the intersecting plates can be passed through an opening in one of the plates at the point where they intersect.
  • the household appliance comprises a sensor for detecting a flow direction and / or a flow velocity of liquid in the liquid line.
  • the sensor can detect a flow direction and a flow velocity of a liquid in a liquid line.
  • the sensor may alternatively detect a flow direction or a flow velocity of a liquid in a liquid line.
  • the sensor may e.g. recognize that the flow velocity has reduced in the liquid line due to a large accumulation of thread-like contaminants, or has increased thereby the flow resistance. Thereby, the sensor can trigger an automatic activation of the backwashing device, whereby the flow direction is reversed and the thread-like contaminants are removed from the front edge of at least one of the plates. After a period of time, the sensor stops the backwash phase, changes the flow direction again, and the clusters of filamentous contaminants flow with the liquid past at least one of the plates. Subsequently, filamentous contaminants deposit again at the leading edge of at least one of the plates.
  • the household appliance comprises a reservoir for collecting thread-like contaminants. This achieves the technical advantage that the thread-like contaminants removed by the backwashing device from at least one of the plates are collected in the storage container. As the thread-like contaminants during removal of at least one of the plates are present as agglomerated thread-like contaminants, they are simply removed from the storage system via the reservoir.
  • the reservoir comprises a recess for collecting filamentous contaminants.
  • the recess of the reservoir comprises a discharge opening for removing thread-like contaminants from the household appliance.
  • the discharge port is regulated by, for example, a valve, whereby the removal of thread-like contaminants from the reservoir at desired times in the cleaning process is possible. Through the discharge opening, the thread-like contaminants are removed with a small amount of liquid.
  • At least one of the plates has a length in the flow direction of at least 3 cm. At least one of the plates present in the fluid line may have a length in the direction of flow of 3 cm to 5 cm. At least one of the plates present in the fluid line may have a length in the direction of flow of 3 cm to 20 cm.
  • the cross-sectional area of at least one of the plates in the liquid line with attached thread-like contaminants is less than 30% of the total cross-sectional area of the liquid line.
  • the backwashing device is a pump.
  • a pump has sufficient force to move the liquid flow in the liquid line with sufficient speed over the leading edge of at least one of the plates. This allows effective attachment of thread-like contaminants to the edge, even when a large amount of thread-like contaminants are deposited on at least one of the plates.
  • a sufficiently strong pump allows the fluid in the fluid line to be pumped against gravity, e.g. when the liquid needs to be pumped into a higher part of a household appliance.
  • the pump is designed to move liquid in the liquid line in both directions of flow.
  • the technical advantage is achieved that the pump is designed as a switchable pump.
  • a switchable pump moves the liquid flow by switching the pumping direction at a sufficient speed against the original flow direction. This will effectively remove the at least one of the plates accumulated thread-like contaminants, since they are effectively detached from the plates by the liquid flow.
  • the object is achieved by a method for removing thread-like contaminants from a liquid in a liquid line of a household appliance, wherein the method comprises the step of attaching thread-like contaminants in the liquid to the leading edge of a flow direction Plate, and wherein the method comprises the step of removing the thread-like contaminants from the leading edge of the plate by reversing the flow direction in the liquid line through a backwashing device.
  • the technical advantage is achieved, that are located in the liquid thread-like contaminants at the front edge of the plate.
  • the thread-like contaminants deposited on the front edge of the plate can form clumps of thread-like contaminants as a result of the attachment of further thread-like contaminants.
  • the method comprises the step of attaching thread-like contaminants of a liquid to another, in the flow direction extending plate.
  • the method comprises the step of collecting thread-like contaminants in a storage container.
  • Fig. 1 shows a schematic view of a washing machine representative of a general household appliance 100.
  • the household appliance 100 includes a door 103 for loading the household appliance 100 with laundry.
  • the domestic appliance 100 comprises a storage container 101 into which detergent or other liquid substances are introduced.
  • Fig. 2 shows a longitudinal view of a fluid line 105 in a household appliance 100.
  • the fluid line 105 includes the flow direction extending plates 109, 115.
  • the plates 109, 115 include a 90 ° angle.
  • At the front edge 111 of the plates 109, 115 are filamentous contaminants of flowing past in the flow direction 107 fluid flow at. As a result, the thread-like contaminants are effectively removed from the liquid in the liquid line 105.
  • Fig. 3 shows a top view of in Fig. 2
  • the 90 ° angle enclosing plates 109, 115 allow the attachment of thread-like contaminants at the front edge 111 of the plates 109, 115 in the flow direction 107 of the liquid in the liquid line 105.
  • By a backwashing the flow direction 113 of the liquid in the liquid line 105 vice versa.
  • By reversing the flow direction 113 thread-like contaminants are detached from the front edge 111 of the plates 109, 115.
  • the multiplicity of thread-like contaminants deposited on the front edge 111 have been converted by aggregations of the individual threads into aggregated thread-like contaminants, which can be effectively removed from the front edge 111 of the plates 109, 115.
  • Twisting in the sense of the invention is understood to mean that the thread-like contaminants, which accumulate on the front edge 111 of the plates 109, 115 in the flow direction 107, are wound around the rear edge of the plates 109, 115 in the flow direction 107 by the liquid flow. As a result, the thread-like contaminants are wound around the plates 109, 115 and therefore can not be removed from the plates 109, 115 by reversing the flow direction 113 of the liquid in the liquid line 105.
  • the obstacle comprises the plates 109, 115.
  • the thread-like contaminants no longer twist. This is due to the fact that the thread-like contaminants have no thread parts which project beyond the rear edge of the plates 109, 115 in the flow direction 107, since the length of the plates 109, 115 is significantly greater than the length of the thread-like contaminants.
  • At least one of the plates 109, 115 has a length in the flow direction 107 of at least 3 cm.
  • a length of 3 cm to 10 cm is advantageous, preferably a length of 3 cm to 5 cm.
  • a length of 3 cm to 30 cm is advantageous, preferably a length of 3 cm to 10 cm.
  • a solution containing filamentous impurities for example rinsing waste water from a washing process
  • a liquid line equipped with at least one of the plates 109, 115 a larger accumulation of filamentous impurities settles on at least one of the plates 109, 115 within a certain time interval from.
  • the flow direction 113 of the liquid in the liquid line 105 is reversed by a backwashing. Thereby, the accumulated thread-like contaminants are detached from the front edge 111 of at least one of the plates 109, 115 and washed away by the liquid.
  • the reversal of the flow direction 113 takes place by reversing the conveying direction of a pump or by flowing back a liquid column from above the obstacle.
  • the detached thread-like contaminants are backwashed by the liquid flow in an optionally existing reservoir from which was previously funded. In this case, the thread-like contaminants remain in an agglomerated state, which they have assumed during the attachment to at least one of the plates 109, 115.
  • the agglomerated thread-like contaminants during the next flow again with the liquid pumped through at least one of the plates 109, 115 then the agglomerated thread-like contaminants no longer hang on at least one of the plates 109, 115. This is because the aggregates at the leading edge 111 roll off at least one of the plates 109, 115. Thus, the aggregates pass through at least one of the plates 109, 115 and remain in the liquid and thus no longer constitute a risk of clogging the line system.
  • the agglomerated thread-like contaminants will preferably accumulate in the middle of the resulting circular motion of the liquid. If there is a suitable depression in this region of the container bottom, which allows the flow to settle, the agglomerated thread-like contaminants settle therein. These are then separated at certain time intervals from the liquid volume. If the recess is equipped with a separate discharge device, the aggregated thread-like contaminants are removed from the liquid by discharging a smaller quantity of liquid than the container volume.
  • the essential advantage of the apparatus and method of the present invention is the prevention of clogging by filamentous contaminants on downstream components within a pumping cycle. Finely divided thread-like contaminants of a liquid are accumulated and become concentrated aggregated form separated from the liquid. Such treated liquids hardly contain filamentous impurities and are thus available subsequent use steps in higher quality form. The process runs without any additional mechanical components, is maintenance-free and requires no further energy.
  • the method is also suitable for waste water from dryers, washer-dryers, dishwashers and other, thread-like contaminants containing liquids.
  • FIG. 12 shows a schematic of a process for removing filamentous contaminants from a fluid conduit comprising the attachment of filamentous contaminants as a first process step 201, removing filamentous contaminants as a second process step 203, and collecting filamentous contaminants as a third process step 205 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Cleaning In General (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Filtering Materials (AREA)

Claims (15)

  1. Appareil ménager (100) avec conduite de liquide (105) pour la conduite d'un liquide et d'un dispositif de lavage à contre-courant pour inverser le sens de courant (113) dans la conduite de liquide (105), caractérisé en ce que la conduite de liquide (105) possède une plaque (109) s'étendant dans la direction de courant (107), au bord avant (111) duquel, dans le sens de courant (107), des impuretés filiformes du liquide peuvent s'accumuler et en ce que le dispositif de lavage à contre-courant sert à éliminer les impuretés filiformes du bord avant (111).
  2. Appareil ménager (100) selon la revendication 1, caractérisé en ce que la conduite de liquide (105) comprend une autre plaque (115) s'étendant dans le sens du courant (107).
  3. Appareil ménager (100) selon la revendication 2, caractérisé en ce que la plaque (109) s'étendant dans le sens du courant (107) et l'autre plaque (115) se croisent.
  4. Appareil ménager (100) selon la revendication 2 ou 3, caractérisé en ce que la plaque (109) s'étendant dans le sens du courant (107) et l'autre plaque (115) forment un angle de 90°.
  5. Appareil ménager (100) selon l'une des revendications précédentes, caractérisé en ce que l'appareil ménager (100) comprend un capteur qui détecte le sens du courant (107, 113) et/ou la vitesse du courant du liquide dans la conduite de liquide (105).
  6. Appareil ménager (100) selon l'une des revendications précédentes, caractérisé en ce que l'appareil ménager (100) comprend un bac de stockage pour la collecte des impuretés filiformes.
  7. Appareil ménager (100) selon la revendication 6, caractérisé en ce que le bac de stockage comprend un évidement pour la collecte des impuretés filiformes.
  8. Appareil ménager (100) selon la revendication 7, caractérisé en ce que l'évidement du bac de stockage comprend une ouverture de vidange destinée à l'élimination des impuretés filiformes hors de l'appareil ménager (100).
  9. Appareil ménager (100) selon l'une des revendications 2 à 8, caractérisé en ce qu'au moins une des plaques (109, 115) présente une longueur dans le sens du courant (107) d'au moins 3 cm.
  10. Appareil ménager (100) selon l'une des revendications 2 à 9, caractérisé en ce que l'aire de la section d'au moins une des plaques (109, 115) dans la conduite de liquide (105) avec les impuretés filiformes accumulées, est égale à moins de 30% de l'aire totale de la section de la conduite de liquide (105).
  11. Appareil ménager (100) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de lavage à contre-courant est une pompe.
  12. Appareil ménager (100) selon la revendication 11, caractérisé en ce que la pompe est réalisée pour mettre le liquide en mouvement dans la conduite de liquide (105) dans les deux sens de courant (107, 113).
  13. Procédé d'élimination d'impuretés filiformes hors d'un liquide dans une conduite de liquide (105) d'un appareil ménager (100), caractérisé en ce que
    le procédé comprend l'étape (201) d'accumulation d'impuretés filiformes dans le liquide au bord avant (111) d'une plaque (109) s'étendant dans le sens du courant (107), et
    le procédé comprend l'étape (203) d'une élimination des impuretés filiformes du bord avant (111) de la plaque (109) par l'inversion du sens du courant (113) dans la conduite de liquide (105) par un dispositif de lavage à contre-courant.
  14. Procédé selon la revendication 13, caractérisé en ce que le procédé comprend l'étape d'une accumulation d'impuretés filiformes d'un liquide sur une autre plaque (115) s'étendant dans le sens du courant (107).
  15. Procédé selon la revendication 13 ou 14, caractérisé en ce que le procédé comprend l'étape (205) d'une collecte d'impuretés filiformes dans un bac de stockage.
EP15736848.1A 2014-07-23 2015-07-17 Appareil ménager doté d'une conduite pour liquide Active EP3172372B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15736848T PL3172372T3 (pl) 2014-07-23 2015-07-17 Urządzenie gospodarstwa domowego z przewodem cieczowym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014214350.0A DE102014214350B3 (de) 2014-07-23 2014-07-23 Haushaltsgerät mit einer Flüssigkeitsleitung
PCT/EP2015/066478 WO2016012380A1 (fr) 2014-07-23 2015-07-17 Appareil ménager doté d'une conduite pour liquide

Publications (2)

Publication Number Publication Date
EP3172372A1 EP3172372A1 (fr) 2017-05-31
EP3172372B1 true EP3172372B1 (fr) 2018-09-19

Family

ID=53546230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15736848.1A Active EP3172372B1 (fr) 2014-07-23 2015-07-17 Appareil ménager doté d'une conduite pour liquide

Country Status (7)

Country Link
EP (1) EP3172372B1 (fr)
CN (1) CN106536813B (fr)
DE (1) DE102014214350B3 (fr)
ES (1) ES2694557T3 (fr)
PL (1) PL3172372T3 (fr)
RU (1) RU2656953C1 (fr)
WO (1) WO2016012380A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019107727A1 (de) * 2019-03-26 2020-10-01 Miele & Cie. Kg Verteilerscheibe für eine Reinigungsflüssigkeit, Verteilersystem, Gargerät mit einem Garraum und Verfahren zu dessen Reinigung
DE102020108021A1 (de) 2020-03-24 2021-09-30 Miele & Cie. Kg Verteilerscheibe für eine Reinigungsflüssigkeit, Verteilersystem, Gargerät mit einem Garraum und Verfahren zu dessen Reinigung

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Publication number Priority date Publication date Assignee Title
DE1785610C3 (de) * 1966-11-28 1974-09-26 Bosch-Siemens-Hausgeraete Gmbh, 7000 Stuttgart Filter für eine Wäschebehandlungsmaschine. Ausscheidung aus: 1610105
DE3041594C2 (de) * 1980-11-04 1985-08-29 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Waschmaschine mit einer Filtervorrichtung
US5437789A (en) * 1993-08-20 1995-08-01 Sabo; Darrick K. Washing machine lint strainer
US6402962B1 (en) * 2000-07-26 2002-06-11 Maytag Corporation Self-cleaning filter with bypass
DE102007056919B4 (de) * 2007-11-27 2020-07-02 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät
BRPI1001488A2 (pt) * 2010-05-26 2012-02-28 Electrolux Do Brasil S.A. aperfeiçoamento em filtro auto limpante para máquinas de lavar roupas

Non-Patent Citations (1)

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Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019107727A1 (de) * 2019-03-26 2020-10-01 Miele & Cie. Kg Verteilerscheibe für eine Reinigungsflüssigkeit, Verteilersystem, Gargerät mit einem Garraum und Verfahren zu dessen Reinigung
DE102020108021A1 (de) 2020-03-24 2021-09-30 Miele & Cie. Kg Verteilerscheibe für eine Reinigungsflüssigkeit, Verteilersystem, Gargerät mit einem Garraum und Verfahren zu dessen Reinigung

Also Published As

Publication number Publication date
RU2656953C1 (ru) 2018-06-07
ES2694557T3 (es) 2018-12-21
EP3172372A1 (fr) 2017-05-31
PL3172372T3 (pl) 2019-04-30
CN106536813A (zh) 2017-03-22
WO2016012380A1 (fr) 2016-01-28
DE102014214350B3 (de) 2015-09-10
CN106536813B (zh) 2019-02-12

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