EP2933365A1 - Procédé de réglage d'un système de pompes à recirculation - Google Patents

Procédé de réglage d'un système de pompes à recirculation Download PDF

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Publication number
EP2933365A1
EP2933365A1 EP15162579.5A EP15162579A EP2933365A1 EP 2933365 A1 EP2933365 A1 EP 2933365A1 EP 15162579 A EP15162579 A EP 15162579A EP 2933365 A1 EP2933365 A1 EP 2933365A1
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EP
European Patent Office
Prior art keywords
pump
volume flow
time
pump system
flow
Prior art date
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Granted
Application number
EP15162579.5A
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German (de)
English (en)
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EP2933365B1 (fr
Inventor
Markus Drücker
Dirk Sieding
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Miele und Cie KG
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Miele und Cie KG
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Publication of EP2933365A1 publication Critical patent/EP2933365A1/fr
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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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • 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
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves

Definitions

  • the invention relates to a method for controlling a Umwutungspumpen system with a Umflutungspumpe with measurable operating characteristics for the circulation of wash liquor with adjustable volume flow in a tub of a washing machine. Furthermore, the invention relates to a washing machine with a control device for a Umwutungspumpen system, wherein the control device is set up and designed such that it performs the inventive use of the washing machine, a method according to the invention for controlling the Umwutungspumpen system.
  • a clocked volume flow operation is performed.
  • Volume flows in the context of the present invention have the dimension volume unit per unit time.
  • the Umflutungspumpe is turned on for a defined period of time and turned off again, before the liquor level in the tub has dropped so far that air could be sucked.
  • the lye collects again, so that the pressure rises again and the pump can be switched on again.
  • a preferred mode of operation of circulating pump systems with adjustable volume flow for example, when using a variable speed Umflutungspumpe, is to operate the Umflutungspumpe alternately with two different flow rates. These are each set for defined periods.
  • the total quantity of introduced wash liquor is divided during the washing process into the bound liquor fixed in the damp laundry and the free liquor circulated in the liquor tank by the circulating pump.
  • the fill level of the free liquor must not fall below a certain minimum level if the purpose of avoiding the needling is to be avoided.
  • the level of the free liquor in the intake of Umflutungspumpe will vary. In this respect, the maximum time interval of a high volume flow, before the Schlumpfpumpen the Umflutungspumpe sets depending on external conditions that can be very different. An on average high flow rate of the free liquor is desirable because it improves the washing result. However, this entails the increased risk of unwanted snorting.
  • the invention thus presents the problem to provide a method for controlling a Umwutppumpen-system, which allows for circulating the free fleet on averaged high volume flow and at the same time minimizes the occurrence of Schlumping.
  • the achievable with the present invention consist in that a high volume flow of free liquor is circulated over time, at the same time running properties of the Umwutpumpsystems are monitored to detect a possibly occurring Schlürfpumpen and initiate countermeasures to prevent the Schlumpfpumpens depending on predetermined reference values , The acoustically disturbing noise of the sneak pump is thereby minimized or avoided.
  • the operation of the bypass pump system with the mentioned operating parameters such as the at least one volumetric flow during the volumetric flow time interval can be carried out over the course of the washing process in the simplest form with only two different volumetric flows, a first and a second volumetric flow. It is preferably switched periodically back and forth between the two flow rates.
  • the further second volume flow is chosen such that a Schlürfpumpen for most laundry situations is safely avoided. That is, it flows per unit time more or at least the same amount of free fleet back into the intake of Umflutungspumpe is circulated as a free fleet by means of the second volume flow.
  • the first volume flow is higher than the amount of free liquor flowing per unit time through the laundry back into the suction of Umflutungspumpe.
  • bypass pump system is operated in a periodic change of different volume flows.
  • the measurable operating characteristics of the bypass pump system are preferably selected from the group comprising: direct pump parameters such as time profile and / or magnitude of electric motor current driving the bypass pump, time profile and / or amount of bypass pump speed and time profile and / or magnitude a received by the Umflutungspumpe electrical power and / or indirect pump parameters such as time course and / or quality of a generated by the Umwutungspumpe sound level and time course and / or quality of a vibration generated by the Umflutungspumpe.
  • direct pump parameters such as time profile and / or magnitude of electric motor current driving the bypass pump
  • indirect pump parameters such as time course and / or quality of a generated by the Umwutungspumpe sound level and time course and / or quality of a vibration generated by the Umflutungspumpe.
  • direct or indirect pump parameters can offer more advantages.
  • the speed-controlled pump motor of the Umflutungspumpe is preferably a frequency converter controlled brushless permanent magnet motor used. With this motor, the direct pump parameters can be analyzed and controlled very simply electronically.
  • the control for terminating the Schlürfpumpens influenced preferably as operating parameters, the direct pump parameters such as time course and / or amount of the Umflutungspumpe driving electric motor current, time course and / or amount of Umwutungspumpen speed and time course and / or amount of electrical power absorbed by the Umflutungspumpe Power.
  • the direct pump parameters such as time course and / or amount of the Umflutungspumpe driving electric motor current, time course and / or amount of Umwutungspumpen speed and time course and / or amount of electrical power absorbed by the Umflutungspumpe Power.
  • the time-averaged volume flow is reduced from a start level to a reduced level, wherein the time-averaged volume flow is subsequently increased from the reduced level by means of a plurality of increase steps with associated increase levels in the direction of the start level.
  • the operation of the bypass pump system is examined for dinghy pumps, with a subsequent increase step of the time-averaged volume flow being executed only when no dart pumping has been detected.
  • the system slowly scans upward after lowering the time-averaged volume flow.
  • this analysis period preferably extends over more than one of these periods.
  • the time-averaged volume flow is preferably reduced again to the increase level before the further increase step.
  • the increase level before the further increase step it has already been determined during the preceding analysis period that no slip pumping occurs.
  • the time-averaged volume flow is preferably lowered by one or more incremental steps that have already been carried out. If the reduction takes place by two or more incremental steps, it is advantageous to significantly extend the analysis period before the renewed increase in the volumetric flow in comparison to the previous course of increase. In this way, it is easier to determine the level of increase below the threshold for the occurrence of snore pumping.
  • the aim of the preferred embodiments of the control method is to find and dynamically maintain this maximum level of increase in a self-learning process if it changes in the course of the washing process.
  • the influencing of the time-averaged volume flow is realized particularly simply by using the at least one volume flow and / or its volume flow time interval as control variables.
  • the speed-controlled Umwutpumps this results in an electronically easy to implement embodiment.
  • the system reacts immediately after a Schlurfpumpen was detected.
  • This is preferably realized in that the Schlürfpump reference value specified and assigned in method step d) is specified at zero.
  • the comparison of the Schlürfpump information with the Schlürfpump standard value carried out in method step e) thus leads directly to a change in the time averaged volume flow by influencing the operating parameters of the bypass pump system.
  • the system does not react immediately after detecting a Schlurfpumpens.
  • the Schlürfpump reference value specified and assigned in method step d) is greater than zero and is compared with the amount of an electronic counter, which increases when a Schlampen pumping of the inundation pump is detected.
  • the electronic counter is continuously increased during the continuation of a detected sniffing pump or that the electronic counter is increased by one counting step during the duration of a detected sniffing pump.
  • the electronic counter is continuously increased during the continuation of a detected sniffing pump or that the electronic counter is increased by one counting step during the duration of a detected sniffing pump.
  • the invention relates to a washing machine with a tub and a Umwutungspumpen system for circulating wash liquor in the tub with different flow rates and a control device for the Umwutpumpsystem, wherein the control device is set up and designed such that this is the intended use of the washing machine of the previously described method for controlling the Umwutpumpsystems performs.
  • FIG. 1 shows the time course of an initially operated with two different volume flows V1 and V2 washing cycle of a Umwutpumpsystems.
  • FIG. 2 shows that too FIG. 1 corresponding time course of the level of free liquor in the tub of a washing machine, which is equipped with the Umwutungspumpen system.
  • the problems to be solved by the invention are based on the time profiles of the volume flow of the bypass pump system in FIG. 1 and the Laugen Stahlllstandes in the tub of a washing machine with the Umwutpump-system in FIG. 2 explained.
  • the curves shown in solid lines represent the course to be improved in the prior art.
  • a preferred mode of operation of Umflutungspumpen-systems with variable-time flow rates is to operate the Umflutungspumpe alternately, in particular periodically alternating, with two different flow rates. These are each set for defined periods.
  • the period T2 has elapsed, the volume flow is increased to the higher value V1 for a period T1. This is desirable, as already mentioned, since the increased volume flow, for example, improves the washing action and / or the distribution of base and detergent. If the time period T1 is too long, the fill level of the wash liquor initially drops below the level h3 which is in FIG.
  • the mode of operation described below leads to recognition of the sneak pumping operation and the resulting automatic setting of a mode which completely avoids or minimizes the sneaking pumping of the flushing pump system.
  • Starting point is initially the operating mode with fixed periods T1 and T2 and the associated volume flows V1 and V2.
  • the slur limit is exceeded and the Schlurfpumpen occurs. This is detected by the drive of the pump.
  • the occurrence of the Schlürfpumpen event can be counted for example by means of a counter. If the Schlurfpumpen again in one of the subsequent cycles T1 and T2, the counter is again increased.
  • a threshold may be defined from which to take action described in the following embodiments. However, it is also possible that this limit is set to zero, so that the measures described below are initiated immediately after a Schlumping event has been detected.
  • a first embodiment of the control method consists in that the increased volume flow V1 is lowered to a value V3 reduced by a factor x (eg 0.9). If the pump in the next cycle with the in FIG. 1 operated volume flow V3 operated, the level is reduced slower. If the reduction of the volume flow is sufficient, then the slur limit h3 is not undershot, before it is converted to the volume flow V2, at which the level rises again. This would ensure operation without snorkelling pumps. On the other hand, if the reduction to the volume flow V3 is insufficient, the Schlürfpump mode is detected and the counter is increased if the slur limit is undershot. If the limit value is exceeded again, the volume flow V3 is then reduced by a factor. This procedure ensures that the volume flow is gradually reduced until the circulation pump system can be operated without the use of scavenge pumps.
  • a factor x eg 0.9
  • the lowered level of the higher volume flow is gradually raised again. After each lift, an analysis period is waited to determine if the level in the tub is sufficient and remains, so that a Schlurfpumpen is avoided. As the level of the originally reduced higher volume flow continues to rise sooner or later, a snorkel pump will occur again. Then again a reduction of the volume flow begins. However, this reduction can be made to one of the previously traversed levels at which no scythes were detected during the analysis period. In this way, the system autonomously learns to maximize its total volume flow averaged over the two alternating periods T1 and T2 without provoking a sniffer pumping operation.
  • the operating parameter of the switch-on time T2 is extended with a low volumetric flow V2, so that the level can rise to a higher level than h1.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP15162579.5A 2014-04-17 2015-04-07 Procédé de réglage d'un système de pompes à recirculation Active EP2933365B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201410105527 DE102014105527B3 (de) 2014-04-17 2014-04-17 Verfahren zur Regelung eines Umflutungspumpen-Systems

Publications (2)

Publication Number Publication Date
EP2933365A1 true EP2933365A1 (fr) 2015-10-21
EP2933365B1 EP2933365B1 (fr) 2019-04-24

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EP15162579.5A Active EP2933365B1 (fr) 2014-04-17 2015-04-07 Procédé de réglage d'un système de pompes à recirculation

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EP (1) EP2933365B1 (fr)
DE (1) DE102014105527B3 (fr)
TR (1) TR201907559T4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016216737A1 (de) 2016-09-05 2018-03-08 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
EP3424398A1 (fr) 2017-07-06 2019-01-09 BSH Hausgeräte GmbH Procédé de fonctionnement d'un appareil électroménager à circulation d'eau à détermination de la durée de marche à vide d'une pompe améliorée et appareil électroménager correspondant

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
CN104797184B (zh) 2012-11-08 2017-07-25 伊莱克斯家用产品公司 检测洗碗机的操作状态
BR112018007020A2 (pt) * 2015-10-07 2018-10-16 Electrolux Appliances AB método para controlar uma bomba de circulação, instrumento, programa de computador e produto
BR112018007322A2 (pt) 2015-11-10 2018-10-23 Electrolux Appliances AB método para determinar se uma água de processo está presente em uma bomba de circulação, aparelho, programa de computador e produto
BR112018008205A2 (pt) 2015-11-25 2018-10-23 Electrolux Appliances AB ?método realizado por um eletrodoméstico, eletrodoméstico, programa de computador e produto de programa de computador?
US11019979B2 (en) 2016-02-15 2021-06-01 Electrolux Appliances Aktiebolag Process water flow detection in circulation pump
DE102017201008B3 (de) 2017-01-23 2018-06-21 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
CN110167412A (zh) 2017-02-24 2019-08-23 伊莱克斯电器股份公司 用于处理堵塞状况的洗碗机、方法和控制系统
DE102017211573A1 (de) 2017-07-06 2019-01-10 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit verbesserter Pumpenzustandserkennung und hierzu geeignete Waschmaschine
DE102017211569A1 (de) 2017-07-06 2019-01-10 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit verbessertem Pumpbetrieb bei zweiphasigen Fluiden und hierzu geeignete Waschmaschine
DE102017115622A1 (de) * 2017-07-12 2019-01-17 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Verfahren zur Niveauregelung in einem Behälter

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DE10065677A1 (de) * 2000-12-29 2002-07-04 Bsh Bosch Siemens Hausgeraete Wasserführendes Haushaltgerät mit optimierter Pumpensteuerung
EP1887443A1 (fr) * 2006-08-10 2008-02-13 Electrolux Home Products Corporation N.V. Equipement ménager muni d'un détecteur d'ambiance et ayant un fonctionnement dépendant de conditions d'ambiance
EP1967121A1 (fr) * 2007-03-06 2008-09-10 Miele & Cie. KG Procédé d'exécution d'une introduction d'eau dans le récipient de rinçage d'un lave-vaisselle

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EP1783264A3 (fr) * 2005-11-04 2008-10-15 Fisher & Paykel Appliances Ltd. Améliorations concernant les machines à laver
US8506725B2 (en) * 2008-02-15 2013-08-13 Electrolux Home Products, Inc. Washing appliance and associated method
US8793828B2 (en) * 2010-04-13 2014-08-05 Whirlpool Corporation Laundry treating appliance with automatic pump shutoff

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
DE10065677A1 (de) * 2000-12-29 2002-07-04 Bsh Bosch Siemens Hausgeraete Wasserführendes Haushaltgerät mit optimierter Pumpensteuerung
EP1887443A1 (fr) * 2006-08-10 2008-02-13 Electrolux Home Products Corporation N.V. Equipement ménager muni d'un détecteur d'ambiance et ayant un fonctionnement dépendant de conditions d'ambiance
EP1967121A1 (fr) * 2007-03-06 2008-09-10 Miele & Cie. KG Procédé d'exécution d'une introduction d'eau dans le récipient de rinçage d'un lave-vaisselle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016216737A1 (de) 2016-09-05 2018-03-08 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
WO2018041590A1 (fr) 2016-09-05 2018-03-08 BSH Hausgeräte GmbH Appareil d'entretien du linge doté d'une commande
DE102016216737B4 (de) * 2016-09-05 2018-03-15 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
EP3424398A1 (fr) 2017-07-06 2019-01-09 BSH Hausgeräte GmbH Procédé de fonctionnement d'un appareil électroménager à circulation d'eau à détermination de la durée de marche à vide d'une pompe améliorée et appareil électroménager correspondant
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

Also Published As

Publication number Publication date
DE102014105527B3 (de) 2015-04-16
TR201907559T4 (tr) 2019-06-21
EP2933365B1 (fr) 2019-04-24

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