US20120006355A1 - Dishwasher - Google Patents

Dishwasher Download PDF

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Publication number
US20120006355A1
US20120006355A1 US13/165,818 US201113165818A US2012006355A1 US 20120006355 A1 US20120006355 A1 US 20120006355A1 US 201113165818 A US201113165818 A US 201113165818A US 2012006355 A1 US2012006355 A1 US 2012006355A1
Authority
US
United States
Prior art keywords
circulating pump
dishwasher
liquid volume
pump
liquid
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.)
Abandoned
Application number
US13/165,818
Other languages
English (en)
Inventor
Andreas Heidel
Reinhard Hering
Bernd Kränzle
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
Assigned to BSH BOSCH UND SIEMENS HAUSGERAETE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERAETE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEIDEL, ANDREAS, HERING, REINHARD, KRAENZLE, BERND
Publication of US20120006355A1 publication Critical patent/US20120006355A1/en
Assigned to BSH Hausgeräte GmbH reassignment BSH Hausgeräte GmbH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BSH Bosch und Siemens Hausgeräte GmbH
Assigned to BSH Hausgeräte GmbH reassignment BSH Hausgeräte GmbH CORRECTIVE ASSIGNMENT TO REMOVE USSN 14373413; 29120436 AND 29429277 PREVIOUSLY RECORDED AT REEL: 035624 FRAME: 0784. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Assignors: BSH Bosch und Siemens Hausgeräte GmbH
Abandoned legal-status Critical Current

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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
    • A47L15/42—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
    • 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
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
    • 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
    • A47L2501/26—Indication or alarm to the controlling device or to the user
    • 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
    • A47L2501/34—Change machine operation from normal operational mode into special mode, e.g. service mode, resin regeneration mode, sterilizing mode, steam mode, odour eliminating mode or special cleaning mode to clean the hydraulic circuit

Definitions

  • Dishwashers have a filter unit which can be constructed from a multistage filter, such as for example a coarse strainer, a fine strainer and a microfilter and by means of which soil particles detached as a result of liquid being directed against food-soiled items to be cleaned can be separated from the circulated liquid in order in this way to prevent soil from being redeposited on the items to be cleaned.
  • a filter cake can form on individual strainers of the filter unit, resulting in the filter unit becoming blocked.
  • the residual liquid volume is a volume of liquid remaining in the dishwasher when e.g. a blocked filter prevents it from being pumped out.
  • the quantity of the minimum liquid volume to be pumped out can substantially correspond to the quantity of an operating liquid volume that is required in order to clean food-soiled items.
  • the minimum liquid volume to be pumped out has a minimum quantity, e.g. 0.1 to 1 litre, such as e.g. approx.
  • Discharging a liquid volume from a pump well of a dishwasher is understood to mean that said liquid is pumped into a domestic wastewater disposal system or at least part thereof is stored in a liquid reservoir, such as e.g. a tank, for subsequent reuse; in the latter case the liquid reservoir can be associated with the dishwasher and arranged within the housing of the dishwasher.
  • the electricity consumption of a circulating pump motor driving the circulating pump can be measured and evaluated as operating parameters of the circulating pump. Use is therefore made of the fact that the electricity consumption of a circulating pump motor is increased due to a quantity of liquid being circulated in the dishwasher, whereas if the dishwasher has been pumped completely empty the circulating pump motor has a reduced electricity consumption since only air can be circulated. Accordingly it can be established in a surprisingly simple manner by comparing the electricity consumption measured during the operation of the circulating pump following a pumping-out operation by means of the drain pump with a stored reference value whether an undesirable residual liquid volume has remained in the dishwasher.
  • the circulating pump motor is embodied as a BLAC or BLDC motor, i.e. as a brushless alternating-current or direct-current motor having electronic commutation.
  • BLAC or BLDC motor i.e. as a brushless alternating-current or direct-current motor having electronic commutation.
  • the circulating pump can be activated for a predetermined period of time.
  • a control electronics module of the dishwasher a sub-step of a wash program according to which, following completion of a pumping-out operation, the circulating pump is put into operation for a predetermined time period, for example 0.3 to 10 seconds in order to check whether a residual liquid volume is contained in the dishwasher or not.
  • the circulating pump can be activated and each time the operating parameters of the circulating pump can be evaluated in respect of a circulated residual liquid volume. This permits a developing blockage of the filter unit by a filter cake or grease deposits to be detected at any early stage and countermeasures to be provided as necessary.
  • a visual and/or audible error signal can be generated in response to the residual liquid volume being exceeded. This permits an operator to be alerted in a simple manner to the fact that the filter unit is blocked and/or a residual quantity of dirty liquid has remained behind in the dishwasher.
  • a visual error signal can be indicated for example by means of an appropriate indicator lamp on a control panel of the dishwasher.
  • a cleaning program for cleaning the filter unit to be performed in response to the residual liquid volume being exceeded.
  • a cleaning program of said type can be initiated manually by an operator in response to a visual or audible signal, e.g. by means of an appropriate selection button on the control panel of the dishwasher, or a cleaning program of said type is automatically inserted into a wash program sequence comprising a plurality of subprogram steps, without the necessity for action on the part of an operator.
  • the cleaning program can put the circulating pump and/or drain pump into operation for the purpose of cleaning the filter unit, with pressure surges being generated by means of variations in speed in order to clean the filter unit, and/or to operate the pumps with reversal of the direction of rotation insofar as the drain pump or circulating pump is embodied for doing this.
  • the cleaning program for cleaning the filter unit can furthermore make provision for example to refill the dishwasher and to remove grease deposits on the filter unit by heating the liquid to temperatures of 60-80° C. for example.
  • Also included within the scope of the invention is a method for operating a dishwasher, in particular a domestic dishwasher, during which food-soiled items to be cleaned are impinged upon by liquid at least temporarily by means of an activated circulating pump, and during which a minimum liquid volume of an operating liquid volume is to be discharged from a pump well of the dishwasher at least temporarily by means of an activated drain pump, with soil particles contained in the liquid being kept away from the circulating pump by means of a filter unit, wherein it is provided according to the invention that after activation of the drain pump for the purpose of discharging the minimum liquid volume and its subsequent deactivation, the circulating pump is activated and its operating parameters are evaluated to determine whether there is a residual liquid volume remaining in the dishwasher.
  • FIG. 1 shows a schematic representation of an exemplary embodiment of a dishwasher according to the invention.
  • a domestic dishwasher GS which has a washing compartment SB in which food-soiled items to be cleaned (not shown) can be placed on extractable dish racks (not shown).
  • Spray arms (not shown) are provided in the washing compartment SB for the purpose of directing liquid against the food-soiled items placed in the dish racks for cleaning. Said spray arms are connected in a liquid-conducting manner via a spray arm supply line SZ to a circulating pump UP.
  • a heating device for heating the liquid circulated by means of the circulating pump UP in order for example to increase the cleaning effect of the water mixed with detergents and/or rinsing agent.
  • a drain pump LP is additionally provided which is driven by a drain pump motor LPM and which permits liquid to be pumped out of the pump well PT of the domestic dishwasher GS by means of a drain conduit EL into a domestic wastewater disposal system.
  • the pump well PT is connected in a liquid-conducting manner to the drain pump LP.
  • a control electronics module SM is provided which is connected to the said motors via control lines (not shown).
  • the circulating pump motor UPM and the drain pump motor LPM are electronically commutated brushless alternating-current motors (BLACs) with which measuring the electricity consumption by means of the control electronics module SM is particularly simply by virtue of the electronic commutation.
  • wash liquor passes through a straining area, e.g. a peripheral surface of an e.g. cylindrically embodied strainer of the filter unit FE in order then to be drawn in by the circulating pump UP, whereas during operation of the drain pump LP the liquid does not pass through the peripheral surface of the strainer of the filter unit FE.
  • a straining area e.g. a peripheral surface of an e.g. cylindrically embodied strainer of the filter unit FE in order then to be drawn in by the circulating pump UP
  • the drain pump LP the liquid does not pass through the peripheral surface of the strainer of the filter unit FE.
  • a blockage of the filter unit FE can nonetheless occur, for example due to formation of grease deposits on the filter unit FE as a result of the dishwasher being operated at low operating temperatures, in the range of 45° C. for example, to which the circulated liquid is heated at a maximum during the wash program step.
  • the drain pump LP pumps a liquid volume, i.e. a minimum liquid volume having a detectable minimum quantity, through the drain conduit EL into a domestic wastewater disposal system.
  • the liquid volume can be a pumping-out volume which is less than an operating liquid volume in the case of a partial pumping-out, or the pumping-out volume is equivalent to the operating liquid volume in the case of complete pumping-out.
  • An activation sequence of said kind can be stored for example in the control electronics module SM, in which a plurality of wash programs comprising a plurality of subprogram steps are stored.
  • the measured electricity consumption of the circulating pump motor UPM With the aid of the measured electricity consumption of the circulating pump motor UPM during this time period it can be established on the basis of the correlation between electricity consumption of the circulating pump motor UPM and the pumped liquid volume whether in spite of the drain pump LP having been put into operation there remains a residual liquid volume in the domestic dishwasher GS due to a blocked filter unit FE.
  • the electricity consumption summed during the time period is compared in the control electronics module SM with a stored reference value.
  • This check as to whether the filter unit FE is blocked or not can be carried out every time the liquid has been discharged by putting the drain pump LP into operation or at specific, alternative intervals with a longer interval duration.
  • a visual and/or audible error signal are/is generated upon confirmation that a minimum liquid volume remains in the domestic dishwasher GS, in which case the visual error signal can be indicated for example by means of an indicator lamp (not shown) on a control panel (not shown) of the domestic dishwasher GS.
  • the cleaning program for cleaning the filter unit FE can provide an operating mode of the circulating pump UP and the drain pump LP in which, by appropriate activation of the circulating pump motor UPM and the drain pump motor LPM, pressure peaks are generated in order to release the blockage of the filter unit FE, as well as possibly also a mode of operation reversing the normal operating direction.
  • control electronics module SM automatically inserts such a cleaning program for cleaning the filter unit FE, thereby removing the need for intervention on the part of an operator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
US13/165,818 2010-07-12 2011-06-22 Dishwasher Abandoned US20120006355A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010031234.7 2010-07-12
DE102010031234A DE102010031234A1 (de) 2010-07-12 2010-07-12 Geschirrspülmaschine

Publications (1)

Publication Number Publication Date
US20120006355A1 true US20120006355A1 (en) 2012-01-12

Family

ID=44508753

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/165,818 Abandoned US20120006355A1 (en) 2010-07-12 2011-06-22 Dishwasher

Country Status (4)

Country Link
US (1) US20120006355A1 (pl)
EP (1) EP2407078B1 (pl)
DE (1) DE102010031234A1 (pl)
PL (1) PL2407078T3 (pl)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9220393B2 (en) 2012-09-13 2015-12-29 Whirlpool Corporation Dishwasher with controlled rotation of lower spray arm
US10244919B2 (en) 2012-11-08 2019-04-02 Electrolux Home Products Corporation N.V. Detecting operational state of a dishwasher
EP3585238A1 (de) * 2017-02-21 2020-01-01 BSH Hausgeräte GmbH Geschirrspülmaschine mit hydraulikanordnung zum reinigen einer filtereinrichtung und verfahren
US10595703B2 (en) 2015-11-10 2020-03-24 Electrolux Appliances Aktiebolag Method of determining whether process water is present in a circulation pump of an appliance for washing and rinsing goods, and appliance and computer program therewith
US10786137B2 (en) 2015-11-25 2020-09-29 Electrolux Appliances Aktiebolag Determining whether process water has been added to a sump of an appliance for washing and rinsing goods during interruption of appliance operation
US11019979B2 (en) 2016-02-15 2021-06-01 Electrolux Appliances Aktiebolag Process water flow detection in circulation pump
US11141039B2 (en) 2017-02-24 2021-10-12 Electrolux Appliances Aktiebolag Dishwasher, method and control system for handling clogging condition
US11976401B2 (en) * 2021-03-22 2024-05-07 Samsung Electronics Co., Ltd. Drainage passage including filter and washing machine having the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018083034A1 (en) * 2016-11-07 2018-05-11 Arcelik Anonim Sirketi A dishwasher comprising microfilter

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5330580A (en) * 1992-05-01 1994-07-19 General Electric Company Dishwasher incorporating a closed loop system for controlling machine load
US6034493A (en) * 1997-02-05 2000-03-07 Fisher & Paykel Limited Brushless DC motor control
DE19951838A1 (de) * 1999-10-28 2001-05-10 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einem Spülbehälter
DE10014871A1 (de) * 2000-03-24 2001-10-11 Miele & Cie Verfahren zur Sensierung von Restwasser bei einer programmgesteuerten Geschirrspülmaschine oder Waschmaschine, sowie Spül- oder Waschmaschine zur Durchführung des Verfahrens
US20030019510A1 (en) * 2001-07-27 2003-01-30 Hegeman Arian Johannes Dishwasher including a turbidity sensor
US20040099287A1 (en) * 2002-11-25 2004-05-27 Shin Dong Hoon Dishwasher control method and dishwasher using the same
US6887318B2 (en) * 2003-07-09 2005-05-03 Whirlpool Corporation Adaptive fill for dishwashers
US20050245413A1 (en) * 2004-03-10 2005-11-03 Reinhold Baltes Dishwashing machine
US20060096615A1 (en) * 2002-07-02 2006-05-11 Elick Robert A Wash and rinse system for a dishwasher
WO2006116433A1 (en) * 2005-04-25 2006-11-02 Viking Range Corporation Dishwasher incorporating a pump prime sensing system for managing a filtration system
US20070151579A1 (en) * 2005-12-30 2007-07-05 Hooker John K Methods and apparatus for controlling a dishwasher
US20090056756A1 (en) * 2007-08-31 2009-03-05 Ro Mon Son Dishwasher and method of controlling a dishwasher

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008020475A1 (de) * 2008-04-23 2009-11-05 Miele & Cie. Kg Verfahren zur Durchführung eines Spülprogramms mit Teilaustausch der im Spülbehälter befindlichen Spülflüssigkeit
DE102008055022A1 (de) * 2008-12-19 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Abpumpen einer Flüssigkeit aus einem wasserführenden Haushaltsgerät

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5330580A (en) * 1992-05-01 1994-07-19 General Electric Company Dishwasher incorporating a closed loop system for controlling machine load
US6034493A (en) * 1997-02-05 2000-03-07 Fisher & Paykel Limited Brushless DC motor control
DE19951838A1 (de) * 1999-10-28 2001-05-10 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einem Spülbehälter
DE10014871A1 (de) * 2000-03-24 2001-10-11 Miele & Cie Verfahren zur Sensierung von Restwasser bei einer programmgesteuerten Geschirrspülmaschine oder Waschmaschine, sowie Spül- oder Waschmaschine zur Durchführung des Verfahrens
US20030019510A1 (en) * 2001-07-27 2003-01-30 Hegeman Arian Johannes Dishwasher including a turbidity sensor
US20060096615A1 (en) * 2002-07-02 2006-05-11 Elick Robert A Wash and rinse system for a dishwasher
US20040099287A1 (en) * 2002-11-25 2004-05-27 Shin Dong Hoon Dishwasher control method and dishwasher using the same
US6887318B2 (en) * 2003-07-09 2005-05-03 Whirlpool Corporation Adaptive fill for dishwashers
US20050245413A1 (en) * 2004-03-10 2005-11-03 Reinhold Baltes Dishwashing machine
WO2006116433A1 (en) * 2005-04-25 2006-11-02 Viking Range Corporation Dishwasher incorporating a pump prime sensing system for managing a filtration system
US20070151579A1 (en) * 2005-12-30 2007-07-05 Hooker John K Methods and apparatus for controlling a dishwasher
US20090056756A1 (en) * 2007-08-31 2009-03-05 Ro Mon Son Dishwasher and method of controlling a dishwasher

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Machine translation of DE10014871 dated 10-2001 *
Machine translation of DE10014871A1 dated 10-2001 *
Machine translation of DE19951838A1 dated 05-1991 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9220393B2 (en) 2012-09-13 2015-12-29 Whirlpool Corporation Dishwasher with controlled rotation of lower spray arm
US10244919B2 (en) 2012-11-08 2019-04-02 Electrolux Home Products Corporation N.V. Detecting operational state of a dishwasher
US10595703B2 (en) 2015-11-10 2020-03-24 Electrolux Appliances Aktiebolag Method of determining whether process water is present in a circulation pump of an appliance for washing and rinsing goods, and appliance and computer program therewith
US10786137B2 (en) 2015-11-25 2020-09-29 Electrolux Appliances Aktiebolag Determining whether process water has been added to a sump of an appliance for washing and rinsing goods during interruption of appliance operation
US11019979B2 (en) 2016-02-15 2021-06-01 Electrolux Appliances Aktiebolag Process water flow detection in circulation pump
EP3585238A1 (de) * 2017-02-21 2020-01-01 BSH Hausgeräte GmbH Geschirrspülmaschine mit hydraulikanordnung zum reinigen einer filtereinrichtung und verfahren
US11166615B2 (en) * 2017-02-21 2021-11-09 BSH Hausgeräte GmbH Dishwasher comprising a hydraulic arrangement for cleaning a filter device
US11141039B2 (en) 2017-02-24 2021-10-12 Electrolux Appliances Aktiebolag Dishwasher, method and control system for handling clogging condition
US11976401B2 (en) * 2021-03-22 2024-05-07 Samsung Electronics Co., Ltd. Drainage passage including filter and washing machine having the same

Also Published As

Publication number Publication date
PL2407078T3 (pl) 2020-08-24
EP2407078A2 (de) 2012-01-18
EP2407078B1 (de) 2020-03-04
DE102010031234A1 (de) 2012-01-12
EP2407078A3 (de) 2016-08-10

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Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HEIDEL, ANDREAS;HERING, REINHARD;KRAENZLE, BERND;REEL/FRAME:026503/0485

Effective date: 20110616

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Free format text: CHANGE OF NAME;ASSIGNOR:BSH BOSCH UND SIEMENS HAUSGERAETE GMBH;REEL/FRAME:035624/0784

Effective date: 20150323

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Free format text: CORRECTIVE ASSIGNMENT TO REMOVE USSN 14373413; 29120436 AND 29429277 PREVIOUSLY RECORDED AT REEL: 035624 FRAME: 0784. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME;ASSIGNOR:BSH BOSCH UND SIEMENS HAUSGERAETE GMBH;REEL/FRAME:036000/0848

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