EP2381827B1 - Verfahren zum abpumpen einer flüssigkeit aus einem wasserführenden haushaltsgerät - Google Patents

Verfahren zum abpumpen einer flüssigkeit aus einem wasserführenden haushaltsgerät Download PDF

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Publication number
EP2381827B1
EP2381827B1 EP09799572.4A EP09799572A EP2381827B1 EP 2381827 B1 EP2381827 B1 EP 2381827B1 EP 09799572 A EP09799572 A EP 09799572A EP 2381827 B1 EP2381827 B1 EP 2381827B1
Authority
EP
European Patent Office
Prior art keywords
speed
circulation pump
household device
pump
nmin
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
EP09799572.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2381827A2 (de
Inventor
Michael Fauth
Erwin Oberstaller
Andreas Reiter
Roland Rieger
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 PL09799572T priority Critical patent/PL2381827T3/pl
Publication of EP2381827A2 publication Critical patent/EP2381827A2/de
Application granted granted Critical
Publication of EP2381827B1 publication Critical patent/EP2381827B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0031—Water discharge phases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of 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
    • 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
    • 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
    • A47L2401/20—Time, e.g. elapsed operating time
    • 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
    • A47L2501/02—Water discharge, e.g. opening or closure of discharge valve
    • 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
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid

Definitions

  • the invention relates to a method for pumping out a liquid from a water-conducting domestic appliance, in particular from a household dishwasher, according to the preamble of patent claim 1.
  • Domestic water appliances such as domestic dishwashers, include a recirculating pump for circulating liquid to allow them to spray such as e.g. supply rotating spray arms, which can be applied to be cleaned dishes with liquid.
  • a drain pump is provided which can be connected to a house-side sewage disposal system.
  • the circulating pump is operated in parallel, i. There is a simultaneous operation of both pumps instead.
  • the EP 1 882 438 A1 referenced which discloses a corresponding Mullsgesrhirr Wegmaschine.
  • the emptying of the washing liquid takes place at least initially running circulation pump.
  • both the circulation pump and the drain pump are in operation, so that the solution results in increased energy consumption of the system.
  • the object of the invention is based on a method for pumping out a liquid from a water-conducting household appliance, in particular a domestic dishwasher, during which at least temporarily water is conveyed for operating a drain pump from the water-conducting household appliance and at least water is temporarily circulated to operate a circulating pump.
  • the rotational speed of the circulating pump is lowered before start-up of the drain pump substantially pressure surge free of a maximum speed at least up to a minimum speed.
  • the rotational speed of the circulation pump is reduced in the first step before starting up the drain pump from a maximum speed to a minimum speed.
  • the speed of the circulation pump from the maximum speed to the minimum speed is reduced at least temporarily linear, i. at a constant rate over time.
  • the number of revolutions of the circulation pump from the maximum speed to the minimum speed may also be reduced correspondingly stepwise with a plurality of steps or an exponential function.
  • Time of 10 to 15 seconds is reduced from the maximum speed to the minimum speed. This makes it possible to exclude a scrubanschmutzung and at the same time to leave the duration of an Abpumpvorgangs almost unchanged.
  • the speed is reduced from 0 to the minimum speed. That is, the operation of the circulation pump is completely stopped.
  • the duration of the pumping process can be reduced to a minimum. It is provided in a development that after the second step by operating the drain pump, an amount of liquid is pumped out. That is, there is no simultaneous or simultaneous operation of the drain pump and the circulation pump instead.
  • the circulation pump is operated. That is, the operation of the circulation pump is interrupted during the Abpumpvorgangs at least once of a phase during which an Abpumpvorgang is performed with the drain pump.
  • the circulating pump is at least temporarily operated at a medium speed, which is between the maximum speed and the minimum speed at which the circulation pump is operated.
  • a medium speed which is between the maximum speed and the minimum speed at which the circulation pump is operated.
  • the dishwasher is operated during operation with the medium speed in a lower basket spray. That is, the dishwasher has an upper and a lower spray, each associated with an upper and a lower Geschinicorb, with an operation is possible, in which either only the upper basket with its associated sprayer or the lower basket with its associated Sprayer is operated. This ensures that any residues of dirt that have come loose, are transported back to the filter device.
  • the circulating pump is operated substantially for a period of time between 5 and 60 seconds, in particular between 10 and 30 seconds.
  • the rotational speed of the circulating pump is reduced in at least two steps when the circulating pump is operated after deactivation of the drain pump. As a result, a cleaning of the filter device can be effected.
  • the speed of the circulation pump in a first step before operating the drain pump from the average speed to a minimum speed wherein in a development, the speed of the circulation pump from the central speed to the minimum speed is at least temporarily reduced.
  • the number of revolutions of the circulating pump from the center speed to the minimum speed may be gradually reduced by a plurality of steps or an exponential function.
  • the rotational speed of the circulating pump is reduced from the maximum rotational speed to the minimum rotational speed essentially in a time duration of 3 to 60 seconds, in particular in a time duration of 8 to 12 seconds.
  • a second quantity of liquid is pumped out by operating the drain pump.
  • the second amount of liquid is less than the first amount of liquid.
  • the maximum speed substantially between 2000 and 3000 revolutions per minute, in particular between 2300 and 2700 per minute, is chosen. This allows an energy-efficient operation of the circulation pump with simultaneously reduced noise emission.
  • the minimum speed is selected substantially between 1200 and 1800 revolutions per minute, in particular between 1300 and 1700 revolutions per minute.
  • the average speed is selected substantially between 1500 and 2000 revolutions per minute, in particular between 1700 and 2300 revolutions per minute. This allows an energy-efficient operation of the circulation pump at the same time reduced noise emission, since the speed of the correspondingly reduced amount of liquid in the water-bearing household appliance is adjusted, so as to ensure that no air bubbles are sucked by the circulation pump, which has an undesirable noise.
  • the drain pump and the circulation pump are controlled by a power electronics of the control electronics. That is, it is only a power electronics provided, which is used alternately to control the lye and circulation pump. Thus, a power electronics can be saved, which reduces the component requirements.
  • the power electronics may, for example, be designed to control pump motors designed as BLDC motors.
  • a water-conducting household appliance in particular a domestic dishwasher, at least comprising a drain pump with which at least temporarily water from the water-conducting household appliance can be conveyed and at least comprising a circulating pump, is circulated with the liquid in the water-conducting household appliance, and with control means for driving the drain pump and the circulation pump, wherein according to the invention it is provided that the control means are designed for substantially pressure shock-free lowering the speed of the circulating pump from a maximum speed to at least a minimum speed before the start of the drain pump.
  • a water-conducting household appliance embodied as a domestic dishwasher GS in the present exemplary embodiment has an interior space IR serving as a washing container, which can be opened or closed for loading and unloading by means of a door (not shown) pivotably hinged to the household dishwasher GS.
  • a door (not shown) pivotably hinged to the household dishwasher GS.
  • baskets GK are provided for receiving items to be cleaned, which can be pulled out of the interior IR of the household dishwasher GS to facilitate loading and unloading.
  • sprayers are provided in the interior IR of the household dishwasher GS as spraying arms SA applied to liquid with liquid, which may be, for example, with detergents or with rinse aid added water so as to effect a cleaning effect or streak-free drying of the items to be washed.
  • liquid which may be, for example, with detergents or with rinse aid added water so as to effect a cleaning effect or streak-free drying of the items to be washed.
  • the liquid flowing down from the items to be washed collects in a pump sump PS, which is arranged in the bottom area of the interior IR of the domestic dishwasher GS.
  • a filter device (not shown) is provided, with the dirt or particles can be separated from the circulating liquid.
  • the spray arms SA are fluidly connected via a supply line ZL with a circulation pump UP, which is arranged in a floor assembly BO below the interior IR of the household dishwasher GS next to other components of the household dishwasher GS.
  • a circulation pump UP In operation, i. when the circulation pump UP is running, the circulation pump UP sucks the liquid accumulating in the pump sump PS and delivers it through the supply line ZL to the spray arms SA.
  • the circulation pump UP in the present exemplary embodiment has an integrated water heater WZ for heating the liquid. Alternatively, a separate instantaneous water heater or another water heater may be provided for heating the liquid.
  • a drain pump LP is provided, which is also in liquid-conducting connection with the pump sump PS and can be connected to a disposal line EL to a home-side disposal network.
  • control electronics SE designed as control means, which are formed by means of conduit (not shown) for driving the circulating pump and the drain pump LP.
  • the control electronics SE can be designed to control drive motors, designed as BLDC motors, of the circulation pump UP and drain pump LP.
  • a corresponding power electronics may be provided for each of the pumps or only one power electronics for both pumps, so that a power electronics for alternating activation of the drain pump LP or the circulation pump UP can be used.
  • FIGS. 1 and 2 taken together.
  • the speed of the circulation pump UP is reduced from a maximum speed nMax linear during a first scrap I from the time t0 starting to the time t1 to a minimum speed nMin.
  • the rotational speed of nMin is reduced to zero, ie the circulation pump is stopped. This ensures that there can be no detachment and no flooding of a filter cake on the filter device, since the amount of liquid flowing back can no longer reach a level approaching the filter device.
  • a first Abpumpvorgang AP1 which extends from the time t1 to the time t2 and during which, for example, a quantity of 0.5 to 3 liters is pumped out.
  • the first Abpumpphase AP1 only the drain pump LP is in operation, while the circulation pump UP is deactivated and therefore has the speed 0.
  • the drain pump LP is deactivated and the circulation pump UP is reactivated. It is operated for this purpose with a medium speed nUk.
  • the domestic dishwasher GS is operated in a lower basket washing operation, in which only the lower spray arm SA of the two spray arms SA is operated.
  • a step III for filter cleaning the rotational speed of the circulation pump UP is linearly reduced from the average speed nUk to the minimum speed nMin.
  • the rotational speed at time t3 is then reduced from the minimum rotational speed nMin to 0, ie the circulation pump UP is stopped.
  • a second Abpumpphase AP2 which extends from the time t3 to the time t4 and during which by sole operation of the drain pump LP a residual amount of water is conveyed from the domestic dishwasher GS, this second amount of liquid is less than the first amount of liquid, which was pumped out of the water-bearing household appliance during the first pumping-down phase AP1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP09799572.4A 2008-12-19 2009-12-04 Verfahren zum abpumpen einer flüssigkeit aus einem wasserführenden haushaltsgerät Active EP2381827B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09799572T PL2381827T3 (pl) 2008-12-19 2009-12-04 Sposób wypompowywania cieczy z prowadzącego wodę urządzenia gospodarstwa domowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810055022 DE102008055022A1 (de) 2008-12-19 2008-12-19 Verfahren zum Abpumpen einer Flüssigkeit aus einem wasserführenden Haushaltsgerät
PCT/EP2009/066402 WO2010079021A2 (de) 2008-12-19 2009-12-04 Verfahren zum abpumpen einer flüssigkeit aus einem wasserführenden haushaltsgerät

Publications (2)

Publication Number Publication Date
EP2381827A2 EP2381827A2 (de) 2011-11-02
EP2381827B1 true EP2381827B1 (de) 2013-06-26

Family

ID=42193943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09799572.4A Active EP2381827B1 (de) 2008-12-19 2009-12-04 Verfahren zum abpumpen einer flüssigkeit aus einem wasserführenden haushaltsgerät

Country Status (8)

Country Link
US (1) US9609996B2 (zh)
EP (1) EP2381827B1 (zh)
CN (1) CN102256527B (zh)
DE (1) DE102008055022A1 (zh)
ES (1) ES2420781T3 (zh)
PL (1) PL2381827T3 (zh)
RU (1) RU2515463C2 (zh)
WO (1) WO2010079021A2 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010031234A1 (de) * 2010-07-12 2012-01-12 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine
KR101699976B1 (ko) * 2010-09-02 2017-01-25 엘지전자 주식회사 식기 세척기 및 그 제어방법
US20130174877A1 (en) * 2012-01-11 2013-07-11 General Electric Company Low speed drain delay
EP2746451A1 (de) * 2012-12-18 2014-06-25 Miele & Cie. KG Verfahren zum Abpumpen einer Flüssigkeit aus einem wasserführenden Haushaltsgerät, insbesondere aus einer Waschmaschine, sowie wasserführendes Haushaltsgerät
CN203730393U (zh) * 2014-01-22 2014-07-23 博西华电器（江苏）有限公司 排液泵及具有该泵的家用电器
EP3359008A1 (en) * 2015-10-07 2018-08-15 Electrolux Appliances Aktiebolag Method of controlling a circulation pump in an appliance for washing and rinsing goods
DE102017211571A1 (de) * 2017-07-06 2019-01-10 BSH Hausgeräte GmbH Verfahren zum Betrieb eines wasserführenden Haushaltsgerätes mit verbesserter Bestimmung einer Leerlauflast einer Pumpe und Haushaltsgerät hierfür

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DE19750266A1 (de) * 1997-11-13 1999-05-20 Miele & Cie Verfahren zum Betrieb einer Umwälzpumpe bei einer programmgesteuerten Geschirrspülmaschine
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Also Published As

Publication number Publication date
RU2515463C2 (ru) 2014-05-10
DE102008055022A1 (de) 2010-06-24
EP2381827A2 (de) 2011-11-02
CN102256527B (zh) 2014-03-26
US9609996B2 (en) 2017-04-04
RU2011125655A (ru) 2013-01-27
ES2420781T3 (es) 2013-08-26
CN102256527A (zh) 2011-11-23
PL2381827T3 (pl) 2013-11-29
WO2010079021A3 (de) 2010-10-14
US20110232702A1 (en) 2011-09-29
WO2010079021A2 (de) 2010-07-15

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