EP3172372A1 - Haushaltsgerät mit einer flüssigkeitsleitung - Google Patents
Haushaltsgerät mit einer flüssigkeitsleitungInfo
- Publication number
- EP3172372A1 EP3172372A1 EP15736848.1A EP15736848A EP3172372A1 EP 3172372 A1 EP3172372 A1 EP 3172372A1 EP 15736848 A EP15736848 A EP 15736848A EP 3172372 A1 EP3172372 A1 EP 3172372A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contaminants
- liquid
- thread
- household appliance
- flow direction
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 134
- 239000000356 contaminant Substances 0.000 claims description 133
- 238000000034 method Methods 0.000 claims description 26
- 238000011001 backwashing Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 description 20
- 230000008901 benefit Effects 0.000 description 16
- 239000012535 impurity Substances 0.000 description 15
- 230000035508 accumulation Effects 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 8
- 230000002776 aggregation Effects 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 238000005054 agglomeration Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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, such as a heating unit, is covered by thread-like contaminants, this leads to a reduction or a prevention of the treatment effect of the treatment unit.
- 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.
- the object is achieved by a domestic appliance with 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.
- a domestic appliance with a liquid line for guiding a liquid
- 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
- 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.
- thread-like contaminants can accumulate more thread-like contaminants.
- 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. As a result, 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 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. This is particularly advantageous if by a backwashing process clumps of thread-like contaminants have been removed from the front edge of the plates and then flowed by a subsequent change in the flow direction again in the original flow direction with the liquid on the plates.
- Which 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 can recognize, for example, that the flow velocity in the liquid line has been reduced due to a large accumulation of thread-like contaminants, or the flow resistance has thereby increased. 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.
- 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 threadlike contaminants in a storage container.
- Fig. 1 is a schematic view of a household appliance
- Fig. 2 is a plan view of a fluid conduit
- Fig. 3 is a longitudinal view of a fluid conduit
- FIG. 4 is a schematic of a method for removing filamentous contaminants from a fluid conduit.
- Fig. 1 shows a schematic view of a washing machine representative of a general household appliance 100.
- the household appliance 100 comprises 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 liquid line 105 in a household appliance 100.
- the liquid line 105 comprises the flow direction extending plates 109, 1 15.
- the plates 109, 1 15 include a 90 ° angle.
- At the front edge 1 1 1 of the plates 109, 1 15 are filamentous contaminants of flowing in the direction of flow 107 fluid flow at. As a result, the thread-like contaminants are effectively removed from the liquid in the liquid line 105.
- FIG. 2 shows a plan view of the liquid line 105 shown in FIG. 2 in a household appliance 100.
- the plates 109, 15 which enclose 90 [deg.] Angles allow the attachment of thread-like contaminants to the front edge 11 of the plates 109, 15 in FIG Flow direction 107 of the liquid in the liquid line 105.
- Flow direction 107 of the liquid in the liquid line 105 By a backwashing the flow direction 1 13 of the liquid in the liquid line 105 is reversed.
- By reversing the flow direction 1 13 thread-like contaminants from the front edge 1 1 1 of the plates 109, 1 15 are replaced.
- the plurality of attached to the front edge 1 1 1 thread-like contaminants have been converted by aggregation of the individual threads in agglomerated thread-like contaminants, which can be effectively removed from the front edge 1 1 1 of the plates 109, 1 15.
- To remove the thread-like contaminants from the front edge 1 1 1 of the plates 109, 1 15, it is advantageous if the thread-like contaminants do not twist. Twisting in the context of the invention is understood to mean that the thread-like contaminants, which attach to the front edge 1 1 1 of the plates 109, 1 15 in the flow direction 107, by the liquid flow around the rear edge of the plates 109, 1 15 in the flow direction 107th be wrapped.
- the thread-like contaminants are wound around the plates 109, 15, and therefore can not be removed from the plates 109, 15 by a reversal of the flow direction 13 of the liquid in the liquid line 105.
- the twisting of the thread-like contaminants takes place only when the thread-like contaminants are longer than the obstacle to which they hang.
- the obstacle comprises the plates 109, 15.
- the thread-like contaminants no longer twist.
- At least one of the plates 109, 15 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 solution containing filamentous impurities for example rinsing waste water from a washing process
- at least one of the plates 109, 15 sets up a larger accumulation within a certain time interval thread-like contaminants.
- the flow direction 1 13 of the liquid in the liquid line 105 is reversed by a backwashing.
- the accumulated thread-like contaminants from the front edge 1 1 1 of at least one of the plates 109, 1 15 detached and washed away by the liquid.
- the reversal of the flow direction 1 13 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 attachment to at least one of the plates 109, 15.
- 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. 4 shows a schematic of a method of 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 one 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)
Abstract
Description
Claims
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 (de) | 2014-07-23 | 2015-07-17 | Haushaltsgerät mit einer flüssigkeitsleitung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3172372A1 true EP3172372A1 (de) | 2017-05-31 |
| EP3172372B1 EP3172372B1 (de) | 2018-09-19 |
Family
ID=53546230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15736848.1A Active EP3172372B1 (de) | 2014-07-23 | 2015-07-17 | Haushaltsgerät mit einer flüssigkeitsleitung |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP3172372B1 (de) |
| CN (1) | CN106536813B (de) |
| DE (1) | DE102014214350B3 (de) |
| ES (1) | ES2694557T3 (de) |
| PL (1) | PL3172372T3 (de) |
| RU (1) | RU2656953C1 (de) |
| WO (1) | WO2016012380A1 (de) |
Families Citing this family (4)
| 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 |
| DE102023207510A1 (de) | 2023-08-04 | 2025-02-06 | Robert Bosch Gesellschaft mit beschränkter Haftung | Beobachtungsvorrichtung zum Beobachten eines oder mehrerer Fahrzeuginsassen in einem Fahrzeuginnenraum |
| DE102023207509A1 (de) | 2023-08-04 | 2025-02-06 | Robert Bosch Gesellschaft mit beschränkter Haftung | Beobachtungsvorrichtung zum Beobachten eines oder mehrerer Fahrzeuginsassen in einem Fahrzeuginnenraum |
Family Cites Families (6)
| 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 |
-
2014
- 2014-07-23 DE DE102014214350.0A patent/DE102014214350B3/de not_active Expired - Fee Related
-
2015
- 2015-07-17 EP EP15736848.1A patent/EP3172372B1/de active Active
- 2015-07-17 RU RU2017103371A patent/RU2656953C1/ru not_active IP Right Cessation
- 2015-07-17 CN CN201580040232.2A patent/CN106536813B/zh not_active Expired - Fee Related
- 2015-07-17 ES ES15736848.1T patent/ES2694557T3/es active Active
- 2015-07-17 PL PL15736848T patent/PL3172372T3/pl unknown
- 2015-07-17 WO PCT/EP2015/066478 patent/WO2016012380A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| RU2656953C1 (ru) | 2018-06-07 |
| CN106536813B (zh) | 2019-02-12 |
| WO2016012380A1 (de) | 2016-01-28 |
| PL3172372T3 (pl) | 2019-04-30 |
| ES2694557T3 (es) | 2018-12-21 |
| DE102014214350B3 (de) | 2015-09-10 |
| CN106536813A (zh) | 2017-03-22 |
| EP3172372B1 (de) | 2018-09-19 |
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