EP2464274B1 - Wasserführendes hausgerät mit einer pumpe - Google Patents

Wasserführendes hausgerät mit einer pumpe Download PDF

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Publication number
EP2464274B1
EP2464274B1 EP10737575A EP10737575A EP2464274B1 EP 2464274 B1 EP2464274 B1 EP 2464274B1 EP 10737575 A EP10737575 A EP 10737575A EP 10737575 A EP10737575 A EP 10737575A EP 2464274 B1 EP2464274 B1 EP 2464274B1
Authority
EP
European Patent Office
Prior art keywords
duct
pump
water
line
domestic appliance
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
EP10737575A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2464274A1 (de
Inventor
Hans Eglmeier
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL10737575T priority Critical patent/PL2464274T3/pl
Publication of EP2464274A1 publication Critical patent/EP2464274A1/de
Application granted granted Critical
Publication of EP2464274B1 publication Critical patent/EP2464274B1/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
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/08—Drain or recirculation pump parameters, e.g. pump rotational speed or current absorbed by the motor
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction

Definitions

  • the invention relates to a water-conducting domestic appliance, in particular a device for washing and / or drying laundry or for washing dishes. Specifically, the invention relates to the field of washing machines, washer-dryers and dishwashers.
  • the Laugenabpumpstrang the known washing machine on a Flusenabscheider, a pump and a drain hose.
  • An upper branch of the pumping line can be connected to a drain or hung in a drainage basin.
  • the from the EP 1 209 275 A2 known washing machine has the disadvantage that no return pumping function is provided, can be pumped back to the liquid back into the tub.
  • the rinsing water is circulated by default. So describes the example DE 101 54 630 A1 an electric motor operated pump, which acts both as a liquor circulation and as a drainage pump. On the Laugenumlaufseite there is a water switch, which switches between the various rotating arms of the flushing system and thus acts as a reversing device.
  • Washing machines with Laugenumpumpsystem are for example from the DE 195 14 204 A1 known. Here is usually a 2-way valve with a reversing device available, which allows switching between pumping and pumping.
  • the object of the invention is to provide a water-conducting domestic appliance, in which an operation is improved. Specifically, it is an object of the invention to provide a water-conducting domestic appliance in which a back pumping of liquid into a treatment area and / or a pumping out of liquid from the treatment area is made possible in a simple manner.
  • a water-conducting household appliance which serves in particular as a device for washing and / or drying laundry or for washing dishes, with a specialistssiungs Symposium in which liquid is introduced, a mechaniklosen, d. H. without reversing device for switching executed, two-way Ventll and a pump over the liquid from the treatment area as a liquid flow to the non-mechanical two-way valve is feasible, the pump via the two-way mechanical valve on the one hand with a first Line and the other is connected to a second line and wherein the two-way mechanical valve is designed so that, depending on a modifiable via a speed of the pump flow rate of the liquid flow to the two-way mechanical valve, a division of the liquid flow to one the first line and on the other hand, the second line is changeable.
  • the first line is designed as a drain line and that the second line is configured as a return line leading back to the treatment area.
  • a pumping of liquid, in particular a wash liquor take place.
  • pumping over the returning to the treatment area return line is possible.
  • the treatment area can be predetermined for example by a tub.
  • the return line leads back to the tub, so that, for example, an advantageous wetting of laundry is possible.
  • a control is provided for the pump, which serves to control the rotational speed of the pump, that an outlet level of the first line is higher than a discharge level of the second line, that the control of the pump in a first mode, in particular a pump down Mode, in which a relatively large portion of the liquid flow is split to the first line, at a high speed drives and that the control of the pump in a second mode, in particular a return pump mode, in which the liquid flow at least substantially in the second Line is guided, with a low speed controls.
  • the controller controls the pump in the first operating mode with such a high operating speed Speed controls that the liquid flow is guided at least substantially in the first conduit.
  • the second operating mode which serves in particular as a return pumping mode
  • at least substantially complete pumping over is achieved.
  • a partial pumping is avoided.
  • the first operating mode which serves in particular as Abpump mode
  • a partial pumping may be sufficient if the second line serves as a return line, so that the pumped back liquid flow over the treatment area back to the pump anyway.
  • an at least substantially complete diversion of the liquid flow at the two-way valve into the first line may also be advantageous in order, for example, to achieve faster pumping.
  • control drives the pump in a third operating mode, in which a part of the liquid flow into the first line and another part of the liquid flow into the other line, with a medium speed.
  • a division of the liquid flow onto the first line and the second line can take place in a targeted manner.
  • at least pointwise a characteristic curve is stored in the control, which allows for the third mode via the speed of the pump predeterminable division of the liquid flow on the one hand to the first line and the other on the second line.
  • the controller can set a ratio of the part of the liquid flow led into the first line to the other part of the liquid flow led into the second line by presetting the respective speed of the pump and possibly vary it ,
  • the two-way mechanical valve is designed as Venturi pump, wherein the first line is connected to an output of the Venturi pump and wherein the second line is connected to a suction portion of the Venturi pump.
  • the first line is connected to an output of the Venturi pump and wherein the second line is connected to a suction portion of the Venturi pump.
  • the second line can be generated by the resulting negative pressure and a suction, so that, for example, air is sucked from the second line, which is guided with the liquid flow through the first line.
  • a low speed of the pump there is no Bernoulli bin in the Venturi pump, so that the Liquid flow passes in the suction section in the second line.
  • the liquid in the first conduit optionally rises to the exit level of the second conduit and complete diversion of the fluid flow into the second conduit. As a result, for example, a pumping can be realized.
  • the mechanical two-way valve has a curved piece, that an input of the elbow to the pump and an output of the elbow are connected to the first line and that the second line at a curve inner point of the elbow in the Elbow opens.
  • a high speed of the pump there is a high flow velocity, so that due to the centrifugal force of the flowing liquid, a negative pressure in the inner curve region of the elbow arises.
  • the inner curve of the bend piece, where the second line opens into the elbow to a negative pressure.
  • at least substantially the entire liquid flow can be guided via the first conduit.
  • the first line can advantageously be configured, at least in sections, as a longitudinal line which exceeds an exit level of the second line.
  • Fig. 1 shows a water-conducting domestic appliance 1 in a partial, schematic representation according to a first embodiment.
  • the water-bearing domestic appliance 1 can be configured in particular as a laundry treatment appliance and serve for washing and optionally additionally for drying laundry.
  • the water-bearing domestic appliance 1 can be configured as a washing machine, washer-dryer or dishwasher.
  • this water-bearing domestic appliance 1 is suitable in a corresponding embodiment, however, for other applications.
  • the water-bearing domestic appliance 1 has a treatment area 2, which is formed for example by a tub.
  • liquid can be introduced via a line.
  • the line 3 can lead from an induction bowl into the treatment area 2, so that a mixture of water and a detergent or the like passes into the treatment area 2 during operation.
  • a liquid which can be introduced into the treatment area 2 also includes the possibility that substances are contained and / or dissolved in the liquid.
  • powdered detergents can be flushed via the line 3 into the treatment area 2, which only dissolve in the treatment area 2 in the water.
  • the treatment area 2 is connected via a line 4 to a pump 5.
  • the pump 5 is connected to a non-mechanized two-way valve 6, which is designed in this embodiment as Venturi pump 6.
  • the Venturi pump 6 has an inlet 7, an outlet 8 and a suction section 9, which is arranged between the inlet 7 and the outlet 8. From the two-way valve 6 branch off on the one hand a drain line 10 and on the other a return line 11 from.
  • the discharge line 10 is connected to the outlet 8 of the Venturi pump 6.
  • the return line 11 is connected to the suction section 9 of the Venturi pump 6.
  • the pump 5 is connected via a connecting piece 12 to the input 7 of the Venturi pump 6.
  • the return line 11 leads from the two-way valve 6 back into the treatment area 2.
  • the discharge line 10 leads to an outlet 13 of the water-bearing domestic appliance 1, which can be connected, for example, by means of a flexible hose to a wastewater connection of a domestic installation.
  • the return line 11 has an outlet level 15, which in the Fig. 1 is illustrated with respect to a horizontal bottom plate 16 of the water-bearing household appliance 1.
  • the drain line 10 has a discharge level 17, which is also illustrated with respect to the horizontal bottom plate 16.
  • the outlet level 17 of the discharge line 10 is higher than the outlet level 15 of the return line 11.
  • the discharge line 10 sections a longitudinal line 18, which is oriented vertically. Through the longitudinal line 18, the outlet level 17 of the drain line 10 exceeds the outlet level 15 of the return line eleventh
  • the water-bearing domestic appliance 1 has a controller 20 which serves to control a rotational speed of the pump 5. Thereby, the flow rate of a liquid flow from the conduit 4 through the connector 12 to the two-way valve 6 can be controlled.
  • the two-way valve 6 in this case represents a branch point.
  • the controller 20 controls the pump 5 at a high speed, so that a high flow rate through the conduit 4 and the connector 12 is formed.
  • the suction section 9 is also designed in the case of the venturi pump 6 with a reduced cross section, in particular diameter, in relation to the inlet 7 and the outlet 8.
  • the controller 20 drives the pump 5 at low speed.
  • the liquid passes from the treatment area 2 with a relatively low flow rate through the conduit 4 and the connector 12 to the Venturi pump 6.
  • the slow flow rate is formed in the suction section 9 no suction.
  • the exit level 17 of the discharge line 10 is significantly greater than the exit level 15 of the return line 11, the liquid flows back completely through the return line 11 into the treatment area 2.
  • the liquid may possibly also rise slightly in the longitudinal line 18, the control with respect to the length of the longitudinal line 18, that is, the difference in level between the outlet level 17 of the drain line 10 and the outlet level 15 of the return line 11, so is configured such that the desired pumping rate is achieved without the liquid level in the longitudinal line 18 rises to the outlet level 17.
  • the controller 20 may also implement a third mode of operation besides the pumpdown mode and the pumpback mode, if desired.
  • the liquid flow caused by the pump 5 can be divided into a part which flows off via the outflow line 10 and another part which flows back into the treatment area 2 via the return line 11.
  • the pump 5 is driven at a medium speed, with some variation is possible to change the distribution.
  • Fig. 2 shows a water-conducting household appliance 1 in a partial, schematic representation according to a second embodiment.
  • the mechaneless two-way valve 6 has a curved piece 25.
  • an input 26 is provided, which is connected to the connecting piece 12.
  • the pump 5 is connected via the connecting piece 12 to the input 26 of the elbow 25.
  • the elbow 25 has an output 27.
  • the longitudinal line 18 of the drain line 10 is attached.
  • the elbow 25 has a curve-side side 28 and a curve-side 29. On the inside of the curve 29 a curve-internal point 30 is provided, at which a portion 31 of the return line 11 opens into the elbow 25.
  • the controller 20 drives the pump 5 at high speed. Thereby, a high flow velocity through the connecting piece 12th achieved.
  • a high flow velocity through the connecting piece 12th achieved.
  • a negative pressure due to the centrifugal force of the flowing medium is formed on the inside of the curve 29 and thus also on the inner curve 30 of the elbow 25, a negative pressure due to the centrifugal force of the flowing medium.
  • the liquid thereby passes at least substantially only into the longitudinal line 18 and at the outlet level 17 of the discharge line 10 via the remaining part of the discharge line 10 to the outlet 13. In this way, a rapid pumping out of the liquid from the treatment area 2 can be achieved.
  • the controller 20 drives the pump 5 at low speed so that the liquid flows slowly into the elbow 25.
  • the level initially rises both in section 31 and in the outflow line 10 to the outlet level 15 of the return line 11. Then it comes to drainage of the liquid in the treatment area 2. Since the exit level 17 of the discharge line 10 is significantly higher than the exit level 15 of the return line 11 in this case no liquid passes to the output 13. This allows pumping.
  • the low speed of the pump 5 may be selected so that the liquid level increases in the longitudinal line 18 via the outlet level 15 of the return line 11, but does not reach the outlet level 17 of the drain line 10. As a result, a higher pumping rate can be made possible.
  • a third mode is implemented, in which the pump 5 is driven by the controller 20 at a medium speed.
  • a division is possible, in which a part of the liquid flow passes via the discharge line 10 to the outlet 13 and another part passes via the return line 11 back into the treatment area 2. If necessary, a ratio of the division may also be varied.
  • FIG. 12 is a graph showing a characteristic to further illustrate the configuration of a water-conducting home appliance 1;
  • the liquid flow F 10 through the discharge line 10 in the third mode is shown on the abscissa, while the ordinate, the ratio of the liquid flow F 10 through the drain line 10 with respect to the liquid flow through the return line 11th is shown.
  • the liquid flow F 10 is standardized to an arbitrarily selected liquid flow.
  • points 32, 33, 34, 35 are shown, which can be determined in a copy of a water-bearing household appliance by measurement.
  • the points 32 to 35 are at least approximately on a straight line.
  • the volume flow of the part of the liquid flow which flows through the return line 11 may be at least approximately constant over the measuring range.
  • the volume flow through the return line 11 depends, inter alia, on the back pressure in the return line 11.
  • the flow rate through the drain line 10 may vary from 2 l / min to 9 l / min while the flow through the return line 11 increases between 0.9 and 1.0 l / min.
  • the ratio V of the part of the liquid flow through the outflow line 10 to the part of the liquid flow through the return line 11 can serve to determine a characteristic which is at least pointwise deposited in the controller 20. Based on this characteristic, the controller 20 can then control the pump 5 at the corresponding speed with respect to a desired ratio V.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • External Artificial Organs (AREA)
EP10737575A 2009-08-12 2010-07-30 Wasserführendes hausgerät mit einer pumpe Active EP2464274B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10737575T PL2464274T3 (pl) 2009-08-12 2010-07-30 Prowadzące wodę urządzenie gospodarstwa domowego z pompą

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028484A DE102009028484B3 (de) 2009-08-12 2009-08-12 Wasserführendes Hausgerät mit einer Pumpe
PCT/EP2010/061110 WO2011018364A1 (de) 2009-08-12 2010-07-30 Wasserführendes hausgerät mit einer pumpe

Publications (2)

Publication Number Publication Date
EP2464274A1 EP2464274A1 (de) 2012-06-20
EP2464274B1 true EP2464274B1 (de) 2013-03-20

Family

ID=42727405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10737575A Active EP2464274B1 (de) 2009-08-12 2010-07-30 Wasserführendes hausgerät mit einer pumpe

Country Status (6)

Country Link
EP (1) EP2464274B1 (zh)
CN (1) CN102481082B (zh)
DE (1) DE102009028484B3 (zh)
EA (1) EA019395B1 (zh)
PL (1) PL2464274T3 (zh)
WO (1) WO2011018364A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011007685A1 (de) 2011-04-19 2012-10-25 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine
CN111227755A (zh) * 2018-11-29 2020-06-05 宁波方太厨具有限公司 一种用于清洗机的节水装置
DE102019207351A1 (de) * 2019-05-20 2020-11-26 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514204A1 (de) * 1995-04-15 1996-10-17 Miele & Cie Trommelwaschmaschine mit einer Vorrichtung zur Laugenumwälzung
US5566696A (en) * 1995-05-26 1996-10-22 White Consolidated Industries, Inc. Dishwasher with balancing vanes on pump impeller
US6086635A (en) * 1997-08-22 2000-07-11 Greenearth Cleaning, Llc System and method for extracting water in a dry cleaning process involving a siloxane solvent
CN1207427A (zh) * 1998-04-14 1999-02-10 李世维 滚筒式洗衣机与烘干机
DE10058413B4 (de) * 2000-11-24 2006-07-27 BSH Bosch und Siemens Hausgeräte GmbH Laugenabpumpstrang in einer Waschmaschine
DE10154630C5 (de) * 2001-11-07 2008-02-07 Diehl Ako Stiftung & Co. Kg Verfahren zum Betreiben einer elektromotorisch angetriebenen Pumpe in einer Spülmaschine
US7862665B2 (en) * 2005-02-09 2011-01-04 Maytag Corporation Pump system for a drawer-type dishwasher

Also Published As

Publication number Publication date
DE102009028484B3 (de) 2011-01-05
EP2464274A1 (de) 2012-06-20
PL2464274T3 (pl) 2013-08-30
WO2011018364A1 (de) 2011-02-17
CN102481082A (zh) 2012-05-30
EA201270244A1 (ru) 2012-09-28
EA019395B1 (ru) 2014-03-31
CN102481082B (zh) 2014-12-03

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