EP3128064A1 - Lave-linge et procede de pompage d'un liquide par un lave-linge - Google Patents

Lave-linge et procede de pompage d'un liquide par un lave-linge Download PDF

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Publication number
EP3128064A1
EP3128064A1 EP16181022.1A EP16181022A EP3128064A1 EP 3128064 A1 EP3128064 A1 EP 3128064A1 EP 16181022 A EP16181022 A EP 16181022A EP 3128064 A1 EP3128064 A1 EP 3128064A1
Authority
EP
European Patent Office
Prior art keywords
washing machine
bypass line
liquid
pumping
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.)
Withdrawn
Application number
EP16181022.1A
Other languages
German (de)
English (en)
Inventor
Karsten Gayk
Martin Brinkmann
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
Publication of EP3128064A1 publication Critical patent/EP3128064A1/fr
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a washing machine and a method for pumping a liquid through a washing machine.
  • the invention has as its object to provide an improved washing machine and an improved method for pumping a liquid through a washing machine.
  • the invention offers the advantage that, by using a bypass line in combination with a circulating pump, a wash liquor can be circulated in a washing machine without the wash liquor being passed through a washing machine tub. This allows a fast and uniform mixing of detergent and washing water can be achieved so that no or at least significantly less detergent residues, such as streaks on a dark textile, remain on the laundry.
  • additional pumping circuit can be used to rinse residues that accumulate when pumping out the water in the circulation pump or prevent accumulation of such residues from the outset, which in turn can have a beneficial effect on the life of the circulation pump ,
  • Another advantage is that for the diversion of the wash liquor via the bypass channel next to the circulation pump no additional pump is required, which on the one hand simplifies the production, maintenance and cleaning of the washing machine and on the other makes the washing machine less susceptible to interference.
  • a washing machine can be a washing machine or a washer-dryer.
  • a tub for example, a barrel or drum-shaped container can be understood.
  • a washing drum can be rotatably arranged.
  • the tub can be suspended within a housing of the washing machine springs and supported on a bottom with struts, shock or friction dampers.
  • the tub can be weighted by weights, such as gray cast iron or concrete.
  • the pumping device can be, for example, a circulating pump or circulating pump and connected to the outlet via an outlet-side line and to the inlet via an inlet-side line.
  • a conduit may for example be a hose or a pipe.
  • the tub and the connected via the lines to the tub pump device can form a Umflut Vietnameselauf for pumping the liquid in the washing machine.
  • the liquid may be suds or water.
  • the bypass line for example, a cross-connection bridging the inlet can be created between the outlet-side and the inlet-side line.
  • the bypass line can open into the inlet-side line, that is, the line connecting the pumping device to the inlet.
  • the bypass line may open into the drain.
  • the bypass line can open into the tub in the region of the drain, ie open into a lower section of the tub. This avoids that the liquid pumped via the bypass line does not come into contact with laundry in the drum.
  • the washing machine may further comprise a connecting line connecting the pumping device and the outlet and a circulating line connecting the pumping device and the inlet.
  • the bypass line can connect the drain or the connection line or the tub to the bypass line.
  • the washing machine may have a cross-section modification device for changing a cross-section of the bypass line and / or the bypass line.
  • the cross-sectional change device can be, for example, a hose crimping device or a valve device.
  • a flow resistance in the circulating or Bypass line can be adjusted so that the liquid flows during operation of the pumping device predominantly through the bypass line.
  • the cross-sectional change device may have at least one movable crimp body for squeezing the purge line and / or the bypass line.
  • the crimping body may, for example, be roll-shaped or have a rounding in order not to damage the bypass or the bypass line during squeezing.
  • Such a cross-sectional modification device is reliable, mechanically robust and particularly cost-effective to implement.
  • the cross-sectional change device can be arranged, for example, between the inlet and an inflow point at which the bypass line opens into the inflow line. This has the advantage that the liquid can be diverted by simply narrowing or closing the Umflutön in the bypass line.
  • the washing machine may have a switching device arranged between the bypass line and the bypass line for controlling a liquid flow from the bypass line into the bypass line.
  • the switching device may for example be a hydraulic switching device in the form of a water diverter. Such a switching device has the advantage that an amount of branched off in the bypass line fluid flow can be controlled in a targeted manner.
  • the washing machine can be provided with at least one radiator for heating the liquid.
  • the bypass line may be formed to pass the liquid to the radiator.
  • an outlet of the bypass line can be arranged so that liquid flowing out of the bypass line is conducted to the radiator.
  • the liquid can be heated via the bypass line during pumping. This allows, for example, a uniform and rapid mixing of water and detergent.
  • bypass line opens at an acute angle in the Umflut ein.
  • the acute angle can exist between a section of the circulating line opening into the pumping device and the bypass line.
  • the washing machine can have a discharge device for pumping out the liquid from the washing machine.
  • the discharge device may be, for example, a drain pump.
  • the pump and the pumping device can have a common sump, depending on the embodiment.
  • the pumping and the pumping device can be connected in series, wherein the pumping device of the pumping device can be upstream or downstream. By this embodiment, the liquid can be pumped out and pumped simultaneously.
  • the washing machine may have a discharge line connected to the discharge device for draining the liquid out of the washing machine and additionally a cleaning line connecting the drainage line and the pumping device fluidly to one another.
  • the cleaning line can serve as a bypass for returning at least a partial volume of a liquid flowing through the drain line into the pumping device, for example, in order to flush a circulating filter of the pumping device.
  • the circulating filter can be cleaned by pumping off the liquid by means of the pumping device.
  • FIG. 1 shows a schematic representation of a washing machine 100, here a washing machine with Umpumpsystem, according to an embodiment of the present invention.
  • the washing machine 100 includes a tub 102 having a drain 104 and an inlet 106.
  • the outlet 104 and the inlet 106 are connected to one another via a pumping device 105.
  • the pumping device 105 comprises a circulating filter housing, in which a circulating pump and a circulating filter for filtering a liquid flowing through the pumping device 105 are arranged.
  • the washing machine 100 has a bypass line 108 for bridging the inlet 106 when pumping the liquid through the pumping device 105.
  • the pumping device 105 is connected on the outlet side via a Umflut ein 110 in the form of a Umflutschlauchs with the inlet 106 and the inlet side via a connecting line 112 in the form of a foundedfaltenbalgs with the drain 104.
  • the connecting line 112 opens, for example, into a pump sump of the pumping device 105.
  • the bypass line 108 is connected to the circulating line 110 in such a way that it opens into the circulating line 110 at an intersection point 114 located between an outlet of the pumping device 105 and the inlet 106 , Furthermore, the bypass line 108 is connected to the connection line 112.
  • the drain 104 is arranged on a bottom side of the tub 102 facing the bottom and the inlet 106 is arranged on an upper side of the tub 102 opposite the drain 104.
  • an optional cross-sectional modification device 116 for changing a cross-section of the circulating line 110 is arranged.
  • the cross-sectional modification device 116 is realized by way of example with two movably arranged, roller-shaped pinch bodies 118, which serve to narrow the hose of the Umflut effet 110 by squeezing in cross section.
  • FIG. 1 shows the cross-sectional change means 110 in the deactivated state in which the Umflut effet 110 is released.
  • a switching device is arranged between the bypass line 108 and the bypass line 110.
  • the switching device is designed, for example, as a connecting piece between the bypass line 108 and the bypass line 110.
  • the washing machine 100 has an optional heating body 120, which in FIG. 1 is arranged for example in the region of the drain 104 within the tub 102 and serves to heat the liquid.
  • the bypass line 108 opens below the radiator 120 in the connecting line 112. Thus, it is ensured that the liquid is flowed past the radiator 120 during pumping over the bypass line 108 and heated.
  • Washing machine 100 shown is further realized with a discharge pump 122 acting as a drain pump for pumping out the liquid from the washing machine 100.
  • the pumping device 120 is merely arranged between the pump device 105 and the connecting line 112 by way of example.
  • the discharge device 122 comprises a drain filter housing, in which a drain pump and a drain filter for filtering a liquid flowing through the discharge device 122 are arranged.
  • the discharge device 122 of the pumping device 105 may also be connected downstream or connected in parallel.
  • a drain line may be connected to the output side of the discharge device 122.
  • the pumping device 105 By the operation of the pumping device 105 as a circulating pump deposits can be dissolved in a filter housing and in the pump area and mixed again with the remaining liquor. In order for these particles, in particular dirt particles, not to get back into the laundry, the liquor is pumped through a bypass in the form of the bypass line 108. For example, a repeated pumping when pumping the liquor after a main wash and rinses to dissolve the deposits in the liquor lead, so they can be significantly reduced or avoided altogether.
  • water with detergent in the area of the pump sump is pumped in, including a heating element as heating element 120, without any laundry charge being included in the circulation.
  • the turbulence of water and detergent can produce a uniform dissolution and concentration in the resulting wash liquor.
  • the bypass hose 108 is connected between the bypass hose 110 and the drainage bellows 112 or a tub cap in the heating area.
  • the circulating hose 110 above a branch 114 with the bypass hose 108 has a hose crimping device as a cross-sectional modification device 116, which makes it possible to narrow the circulating hose 110. Due to the narrowing is increases a flow resistance such that the recirculated water only or at least predominantly flows through the bypass tube 108.
  • the system is constructed so that the water preferably flows through the bypass tube 108, which can be narrowed or shut off by the Schlauchquetschvorraum.
  • the binding of the bypass hose 108 to the Umflutschlauch 110 is such that in unimpeded flooding due to the Venturi effect water is entrained more from the bypass hose 108, rather than that a portion of the volume flow is diverted via the bypass hose 108.
  • the bypass hose 108 can be connected to the circulating hose 110 at a predefined acute angle ⁇ , so that the formation of a Venturi effect during pumping into the laundry is favored.
  • the circulating hose 110 is configured, for example, by means of a squeezing device 116 in the form of two rollers or two rounded bodies or a rounded body and a surface, as in FIG FIG. 3 shown. In this case, the smallest possible relative movement between the tube 110 and the tube 110 contacting the squish components 118 is provided.
  • With increase in the flow resistance is pumped through the bypass 108 either in the pump sump, as in FIG. 2 indicated, or, as in FIG. 3 shown pumped to the radiator 120 to achieve a uniform detergent concentration and heating.
  • a more uniform, overall improved washing effect ie an increase in the detergent performance index or a shortening of the program runtime or an energy saving can be achieved.
  • FIG. 2 shows a schematic representation of a washing machine 100 according to an embodiment of the present invention. Shown above is the basis of FIG. 1
  • By narrowing the cross section of the Umflut ein 110 by means of the cross-sectional change device 116 is achieved that when pumping the liquid in the direction of the inlet 106 at least a majority of the liquid via the bypass line 108, ie without the detour via the tub 102nd , is fed back into the connecting line 112 and thus into the pump sump of the pumping device 105.
  • a flow direction of the liquid is marked with an arrow.
  • FIG. 3 shows a schematic representation of a washing machine 100 according to an embodiment of the present invention.
  • the washing machine 100 essentially corresponds to the previous one with reference to FIG FIG. 2 described washing machine with activated cross-sectional modification device 116, with the difference that the bypass line 108 does not open into the connecting line 112, but above the connecting line 112 into the tub 102 and directly in front of the radiator 120 ends.
  • one of the two crimping body 118 is not roll-shaped, but realized as a rectangular, firmly attached body. A flow direction of the liquid is again marked with an arrow.
  • FIG. 4 shows a schematic representation of a washing machine 100 according to an embodiment of the present invention.
  • a drain line 400 connected to a discharge port of the drain filter housing of the discharge device 122 for discharging a liquid from the washing machine 100 is shown.
  • the drain line 400 is connected via a cleaning line 402 with the Umflutfiltergephaseuse the pumping device 105.
  • another cross-sectional change means 416 is disposed in the purge line 402 to change a cross section of the purge line 402. By using the further cross-sectional change means 416, an amount of the liquid branched from the drain line 400 into the purge line 402 can be adjusted.
  • the Umfluttechnisch 110 is connected, as described with reference to the preceding figures.
  • the purge line 402 may also open into the drain line 400 at an acute angle, corresponding to the bypass line described with reference to the preceding figures, which according to this embodiment is also from the purge line 110 can branch off.
  • the further cross-section modification device 416 serves, for example, as a shut-off device in order to close the cleaning line 402 as required. By closing the cleaning line 402, it is ensured that the volume flow during pumping down, for example during spin-up, is not reduced. For example, the cleaning line 402 only when pumping a free fleet by means of Cross-section changing device 116 is released to flush the purge filter housing and clean. A flow direction of the liquid is marked with two thick arrows.
  • FIG. 12 shows a flowchart of a method 500 for pumping a liquid through a washing machine according to an embodiment of the present invention.
  • the method 500 may be used, for example, in conjunction with any of the foregoing FIGS. 1 to 4 described washing machine are performed.
  • the liquid is pumped in a step 510 by means of the pumping device between the drain and the inlet.
  • the liquid can be circulated in step 510 from the outlet to the inlet and from the inlet via the tub back to the drain.
  • the cross-section of a circulating line connecting the pumping device to the inlet is changed in such a way that the liquid is at least mostly pumped back to the outlet via the bypass line instead of via the tub.
  • the liquid is conducted past the inlet.
  • steps 510, 520 may be performed concurrently or in any order sequentially in time.
  • step 520 may be performed repeatedly at defined time intervals, for example, at the same time as step 510.
  • a pumping device is activated in step 510 in order to pump the liquid out of the washing machine, for example at the end of a washing, rinsing or spinning cycle.
  • the method 500 may be performed in conjunction with a wet wash process.
  • small amounts of water such as small and very small loads, by means of the method 500 first mixed evenly with the detergent.
  • the laundry is moistened with this liquor. After a reasonable amount of time, part of the liquor is spun off and water is filled up so that it can be heated by the radiator.
  • the water level can also be below the radiator, provided that the radiator is continuously wetted during a heating phase on the pumped water.
  • the water is pumped over during the heating or in short heat pauses on the bypass and then returned to the laundry.
  • the water level can be below the radiator, provided that the radiator is continuously wetted during the heating phase on the pumped water.
  • the second bleach-containing component may be added.
  • the pumping device is briefly switched on and off during the heating of the washing liquid, in particular small amounts of water. This allows the water to be heated faster.
  • the advantage of such a method 500 is that the detergent is evenly dissolved before the liquor is pumped into the laundry by the circulating pump. Thus, it is prevented on the one hand that detergent components settle at the places directly hit by the flood water jet and there are still present after washing as residues. On the other hand, can be achieved by the uniform detergent concentration a more uniform and overall stronger washing effect. At the same time deposits of dirt and detergent residues in the bypass pump or in an upstream filter area can be avoided or at least significantly reduced.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP16181022.1A 2015-08-04 2016-07-25 Lave-linge et procede de pompage d'un liquide par un lave-linge Withdrawn EP3128064A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015112776.8A DE102015112776A1 (de) 2015-08-04 2015-08-04 Waschmaschine und Verfahren zum Pumpen einer Flüssigkeit durch eine Waschmaschine

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Publication Number Publication Date
EP3128064A1 true EP3128064A1 (fr) 2017-02-08

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EP16181022.1A Withdrawn EP3128064A1 (fr) 2015-08-04 2016-07-25 Lave-linge et procede de pompage d'un liquide par un lave-linge

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DE (1) DE102015112776A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3710628A1 (fr) * 2017-11-15 2020-09-23 Electrolux Appliances Aktiebolag Lave-linge et son procédé de fonctionnement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401899A1 (de) * 1984-01-20 1985-07-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Trommelwaschmaschine fuer den haushalt
US20050132758A1 (en) * 2003-12-18 2005-06-23 Lg Electronics, Inc. Device for circulating washing water in washing machine
EP2246469A1 (fr) * 2010-02-16 2010-11-03 V-Zug AG Lave-linge doté d'une pompe à circulation et d'une phase d'essorage
EP2703548A1 (fr) * 2012-08-29 2014-03-05 Electrolux Home Products Corporation N.V. Machine à laver le linge et procédé pour laver le linge dans un lave-linge
US20140109323A1 (en) * 2011-07-18 2014-04-24 Kyeonghwan Kim Washing machine and method for supplying wash water of washing machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401899A1 (de) * 1984-01-20 1985-07-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Trommelwaschmaschine fuer den haushalt
US20050132758A1 (en) * 2003-12-18 2005-06-23 Lg Electronics, Inc. Device for circulating washing water in washing machine
EP2246469A1 (fr) * 2010-02-16 2010-11-03 V-Zug AG Lave-linge doté d'une pompe à circulation et d'une phase d'essorage
US20140109323A1 (en) * 2011-07-18 2014-04-24 Kyeonghwan Kim Washing machine and method for supplying wash water of washing machine
EP2703548A1 (fr) * 2012-08-29 2014-03-05 Electrolux Home Products Corporation N.V. Machine à laver le linge et procédé pour laver le linge dans un lave-linge

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