EP3332059B1 - Wäschepflegegerät mit einem zirkulationssystem - Google Patents

Wäschepflegegerät mit einem zirkulationssystem Download PDF

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Publication number
EP3332059B1
EP3332059B1 EP16736477.7A EP16736477A EP3332059B1 EP 3332059 B1 EP3332059 B1 EP 3332059B1 EP 16736477 A EP16736477 A EP 16736477A EP 3332059 B1 EP3332059 B1 EP 3332059B1
Authority
EP
European Patent Office
Prior art keywords
pump
washing drum
water
washing
laundry care
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
EP16736477.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3332059A1 (de
Inventor
Rodrigo FERRAZ MAINA
Dirk MISCHKE
Kurt Richter
Raymond Römer
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL16736477T priority Critical patent/PL3332059T3/pl
Publication of EP3332059A1 publication Critical patent/EP3332059A1/de
Application granted granted Critical
Publication of EP3332059B1 publication Critical patent/EP3332059B1/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
    • 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
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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
    • 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
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/02—Water supply

Definitions

  • the present invention relates to a laundry care device with a circulation system.
  • the disclosure EP 2 754 743 A1 shows a washing machine with a circulation pump.
  • the disclosure JP 2010 046125 A shows a washing machine with a circulation pump.
  • circulation systems are used to pump washing liquor out of the tub by means of a pump, and to feed the pumped-out washing liquor back into the tub by means of the pump through the circulation system.
  • the wash liquor supplied to the tub is passed directly onto the laundry in the washing drum in order to wet the laundry with wash liquor. If the pump has a constant pumping capacity, the washing liquor is led into the middle of the laundry in the washing drum, as a result of which the washing liquor supplied may not evenly wet the laundry.
  • the object according to the invention is achieved by a laundry care device with a rotatably mounted washing drum for receiving laundry, a tub for receiving washing liquor, the tub having an outlet opening and an inlet opening, a circulation system which fluidically connects the outlet opening to the inlet opening, wherein the Circulation system comprises a pump for pumping washing liquor into the washing drum, the pump being designed to pump the washing liquor into the washing drum with different pump pressures within the same washing process in order to vary a location of the washing liquor in the rotating washing drum, the pump being designed Pumping wash liquor into the washing drum within the same washing process with periodically changing pump pressures, the periodically changing pump pressures corresponding to a sinusoidal pump pressure change, the laundry care device comprising a drum drive for driving the washing drum with a rotation frequency, the pump being designed, To pump wash liquor into the washing drum with a pump pressure changing according to a pump frequency, the pump frequency differing from the rotation frequency or from a multiple of the rotation frequency, the pump frequency is lower than the rotation frequency.
  • the Circulation system comprises a
  • the pump is operated at a constant speed during the circulation process, as a result of which a constant flow of wash liquor in the circulation system is obtained. Due to the constant flow of wash liquor, the wash liquor is pumped through the inlet opening with a uniform injection pattern into the wash drum, whereby a constant point of occurrence of the wash liquor supplied in the wash drum is obtained when the wash liquor is at rest. If the washing drum rotates rapidly, the laundry may be pressed against the drum wall of the washing drum due to the centrifugal forces which occur, as a result of which a laundry tunnel can form in the middle of the washing drum.
  • the wash liquor injected through the inlet opening wets the laundry tunnel and is pressed outwards in a radial direction by the laundry due to the centrifugal forces that occur.
  • the laundry lying against the front of the washing drum can under certain circumstances only be insufficiently wetted.
  • the pump In order to obtain complete wetting of the laundry even when the washing drum rotates rapidly, the pump is designed to pump washing liquor into the washing drum with different pump pressures through the circulation system within the same washing process.
  • the different pump pressures result in different flow rates of the wash liquor in the circulation system. Because of the different flow rates of wash liquor, there are therefore different injection patterns of the wash liquor passed through the inlet opening into the wash drum and consequently a different point of occurrence of the injected wash liquor on the laundry in the rotating wash drum.
  • a laundry care device is understood to mean a device that is used for laundry care, such as a washing machine or a tumble dryer. Such a laundry care device is understood in particular to mean a household laundry care device. So a laundry care device, which is used in the context of housekeeping, and with which laundry is treated in normal household quantities.
  • the laundry care device comprises a nozzle which is arranged at the inlet opening, the pump being designed to pump the wash liquor through the nozzle into the washing drum.
  • the nozzle arranged at the inlet opening ensures a particularly effective introduction of the washing liquor into the washing drum.
  • the nozzle has an advantageous shape to effectively redirect the liquid flow of the wash liquor pumped through the nozzle, whereby the wash liquor can effectively wet the laundry in the washing drum.
  • the circulation system is fluidly connected to the inlet opening and the nozzle arranged at the inlet opening, so that the pump pumps wash liquor through the nozzle at different pump pressures, as a result of which the wash liquor pumped through the nozzle is directed into the washing drum with different injection patterns.
  • the pump is designed to pump wash liquor into the washing drum within the same washing process with pump pressures that change periodically over time, the pump pressures that change periodically over time corresponding in particular to a sinusoidal pump pressure change.
  • a periodic change in the pump pressures of the pump can advantageously be realized by correspondingly controlling the pump drive, which enables advantageous control of the changing point of occurrence of the wash liquor in the rotating washing drum.
  • the periodic change in the pump pressure can cause the wash liquor to appear in the washing drum at the same time changes periodically, whereby a uniform distribution of the wash liquor on the laundry is achieved.
  • the circulation system comprises a circulation hose which fluidically connects the drain opening to the inlet opening, the pump being connected to the circulation hose in order to pump wash liquor through the drain opening out of the tub into the circulation hose and the pumped wash liquor out of the Pump the circulation hose through the inlet opening into the washing drum.
  • the circulation hose of the circulation system enables an effective circulation of washing liquor from the tub in the circulation hose and from the circulation hose into the washing drum, which enables an effective supply of washing liquor to the laundry in the washing drum.
  • the laundry care device comprises a pump drive for driving the pump and a controller for controlling the pump drive, the controller being designed to operate the pump drive at a first speed during a first time interval of the washing process in order to wash water during the first Pumping time interval with a first pump pressure in the washing drum, and wherein the controller is designed to operate the pump drive at a second speed, which is different from the first speed, during a second time interval following the first time interval, to wash water during the second Pump time interval with a second pump pressure, which is different from the first pump pressure, in the washing drum.
  • the laundry care device comprises a drum drive for driving the washing drum with a rotation frequency
  • the pump is designed to pump washing liquor into the washing drum with a pump pressure that changes according to a pumping frequency, the pumping frequency being dependent on the rotation frequency or a multiple of the rotation frequency different.
  • the pump frequency is lower than the rotation frequency. This achieves the technical advantage that the low pumping frequency ensures that the laundry is advantageously wetted in the washing drum.
  • the washing drum rotates several times under the introduced wash liquor jet several times. Thus, different areas of the laundry in the washing drum are wetted each time the pump pressure changes.
  • the pump can be deactivated during a period of the washing process in order to stop the pumping of wash liquor into the washing drum during the period.
  • the pump is designed to stop the pumping of washing liquor into the washing drum during the period of time, so that the washing present in the washing drum can be sufficiently flooded by washing liquor already present in the washing drum, thereby uniformly wetting the laundry is achieved.
  • the laundry care device comprises a fill level sensor which is designed to detect a fill level of wash liquor in the suds container, the pump being designed to change the pump pressure as a function of the detected fill level of wash liquor.
  • the pump pressure of the pump can be changed as a function of the detected fill level of the wash liquor in the tub, thereby ensuring that the pump pressure can be adapted to the amount of wash liquor in the tub not bound to the laundry , This ensures that the pump does not have to be switched off when the wash liquor level is low, or that the tub is not pumped empty.
  • a flow sensor is arranged in the circulation system, which is designed to detect a flow rate of wash liquor in the circulation system, the pump being designed to change the pump pressure as a function of the detected flow rate of wash liquor.
  • the pump pressure can be changed as a function of the detected flow rate of wash liquor in the circulation system, in particular in the circulation hose, thereby ensuring that the pump pressure can be adapted to the detected flow rate of the wash liquor. This ensures that in the event of a possible blockage in the circulation system and a resulting reduction in the flow rate, the pump pressure of the pump can be changed accordingly in order to ensure an effective circulation of the wash liquor in the circulation system.
  • the inlet opening is arranged on a front side or on an upper side of the suds container, and the outlet opening is arranged on an underside of the suds container.
  • the inlet opening is located on a top or on a front of the laundry care device, e.g. in the vicinity of a sleeve arranged on the tub, thereby allowing washing liquor to circulate effectively in the circulation system.
  • the washing drum comprises a device for moving laundry in the washing drum or a device for moving washing liquor in the washing drum.
  • the device for moving laundry in the washing drum or the device for moving washing liquor in the washing drum such as e.g. Laundry driver
  • the wetting of the laundry in the washing drum with wash liquor is improved.
  • the washing drum rotates items of laundry get caught in the device for moving laundry in the washing drum and are carried along by the washing drum in the direction of rotation of the washing drum.
  • wash liquor can be moved in the direction of rotation of the wash drum by the device for moving wash liquor.
  • the circulation system comprises a recess for depositing contaminants.
  • the laundry care device comprises a filter unit, the filter unit being arranged in the circulation system, and the filter unit preferably comprising a foreign body trap for removing foreign bodies.
  • the object is achieved by a method for varying a point of occurrence of wash liquor in a rotating washing drum in a laundry care device
  • the laundry care device comprising the rotatably mounted washing drum for receiving laundry, a tub for receiving washing liquor, and the tub has a drain opening and an inlet opening, and comprises a circulation system which fluidically connects the drain opening to the inlet opening, the circulation system comprising a pump for pumping wash liquor into the washing drum, the method comprising pumping wash liquor within the same washing process with different pump pressures into the washing drum in order to vary a point of occurrence of the washing liquor in the rotating washing drum, the pump being designed to wash liquor within the same washing process with periodically changing pump pressures n to be pumped into the washing drum, the periodically changing pump pressures corresponding to a sinusoidal pump pressure change, the laundry care device comprising a drum drive for driving the washing drum with a rotation frequency, the pump being designed, washing liquor with a pump pressure changing in accordance with a pump frequency pump the washing drum
  • FIG 1 shows a schematic view of a general laundry care appliance 100, such as a washing machine.
  • the laundry care device 100 comprises a induction bowl 101, into which washing care substance, such as, for example, detergent, can be filled.
  • the laundry care device 100 comprises a door 103 for loading the laundry care device 100 with laundry.
  • FIG. 2 shows a schematic view of a laundry care device with a circulation system.
  • the laundry care device 100 comprises a circulation system 105, as well as a washing drum 107 for receiving laundry, a tub 109 for receiving washing liquor, which has an inlet opening 111 and a drain opening 113.
  • the inlet opening 111 and the outlet opening 113 are fluidly connected by a circulation hose 115, the circulation hose 115 being connected to a pump 117.
  • a nozzle 118 Arranged at the inlet opening 111 is a nozzle 118 which is designed to guide washing liquor into the washing drum 107 and, if appropriate, to wet laundry present in the washing drum 107.
  • the pump 117 is designed to pump wash liquor through the drain opening 113 from the tub 109 into the circulation hose 115 and to pump the pumped wash liquor out of the circulation hose 115 through the inlet port 111 and through the nozzle 118 into the tub 109 again.
  • the laundry care device 100 further comprises a pump drive 119 for driving the pump 117.
  • the use of the circulation system 105 optimizes the washing liquor transport in the laundry care device 100.
  • the washing liquor conveyed in the circulation system 105 is pumped through the nozzle 118 directly onto the laundry in the washing drum 107.
  • the washing liquor injected into the washing drum 107 through the nozzle 118 can be removed from the laundry bounce off and run back into the tub 109 without completely flooding the laundry.
  • the washing drum 107 If the washing drum 107 is rotated very quickly, the laundry is pressed against the drum wall of the washing drum 107 due to the centrifugal forces which occur, as a result of which a laundry tunnel is formed in the washing drum 107.
  • the wash liquor is pumped by the pump 117 through the circulation hose 115 to the nozzle 118 and then introduced into the washing tunnel which forms in the washing drum 107.
  • the pump drive 119 of the pump 117 is operated at a constant rotational speed, as a result of which a constant flow of the wash liquor is provided in the circulation system 105 while the wash liquor is being pumped around.
  • the laundry in the middle of the washing tunnel forming in the washing drum 107 is advantageously wetted, and, due to the centrifugal forces that occur, the washing in the washing drum 107 is flooded in a way away from the washing tunnel outward radial direction.
  • the laundry lying on the end of the tub 109 is insufficiently wetted, since the constant point of occurrence of the wash liquor jet directed through the nozzle 118 into the washing drum 107 is directed at the center of the washing tunnel in the washing drum 107 when the pump pressure of the pump 117 is constant ,
  • the pump 117 is designed to pump the wash liquor with different pump pressures through the circulation system 105, or through the circulation hose 115, through the inlet opening 111 and through the nozzle 118 into the rotating washing drum 107 within the same washing process.
  • the change in the pump pressure of the wash liquor pumped by the pump 117 in the circulation system 105 leads to correspondingly different flow rates of the wash liquor conveyed by the pump 117 in the circulation system 105.
  • the different delivery flows of the wash liquor in the circulation system 105 lead to a correspondingly different injection behavior of the wash liquor into the wash drum 107 through the nozzle 118 and thereby to one vary accordingly
  • the point of occurrence of the wash liquor in the rotating washing drum 107 In the case of a rotating washing drum 107, almost any area of the washing drum 107 can be controlled by changing the point of occurrence of the washing liquor fed into the washing drum 107, and thereby laundry located in the washing drum 107 completely with washing liquor be wetted.
  • the laundry care appliance 100 further comprises a controller 121, which is connected to the pump drive 119 by a control connection 123 and is designed to control the pump drive 119, in particular to change the speed of the pump drive 119.
  • a change in the speed of the pump drive 119 also changes the pump pressure caused by the pump 117 when pumping wash liquor through the circulation system 105.
  • the pump 117 can pump the wash liquor into the washing drum 107 with periodically changing pump pressures, the periodically changing pump pressures corresponding in particular to a sinusoidal pump pressure change.
  • the pump pressure of the pump 117 can be changed in such a way that when the washing drum 107 rotates completely in time almost exactly one sine wave of the change in pump pressure is complete, but not exactly one. It is thereby achieved that, when the washing drum 107 rotates again, the laundry tunnel of the laundry in the washing drum 107 is sprayed offset to the first round trip.
  • Figure 3 shows a sequence of a method for varying the point of occurrence of wash liquor which is passed into the washing drum of a laundry care device, the laundry care device according to Figure 2 is described.
  • the method 200 comprises, as a method step, pumping 201 of washing liquor into the washing drum 107 with different pump pressures within the same washing process in order to vary a location of the washing liquor in the rotating washing drum 107.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP16736477.7A 2015-08-04 2016-07-08 Wäschepflegegerät mit einem zirkulationssystem Active EP3332059B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16736477T PL3332059T3 (pl) 2015-08-04 2016-07-08 Urządzenie do przetwarzania prania z układem cyrkulacji

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015214803.3A DE102015214803A1 (de) 2015-08-04 2015-08-04 Wäschepflegegerät mit einem Zirkulationssystem
PCT/EP2016/066329 WO2017021101A1 (de) 2015-08-04 2016-07-08 Wäschepflegegerät mit einem zirkulationssystem

Publications (2)

Publication Number Publication Date
EP3332059A1 EP3332059A1 (de) 2018-06-13
EP3332059B1 true EP3332059B1 (de) 2020-01-29

Family

ID=56372910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16736477.7A Active EP3332059B1 (de) 2015-08-04 2016-07-08 Wäschepflegegerät mit einem zirkulationssystem

Country Status (6)

Country Link
EP (1) EP3332059B1 (pl)
CN (1) CN107849794B (pl)
DE (1) DE102015214803A1 (pl)
PL (1) PL3332059T3 (pl)
RU (1) RU2673307C1 (pl)
WO (1) WO2017021101A1 (pl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018206364A1 (de) * 2018-04-25 2019-11-21 BSH Hausgeräte GmbH Haushaltsgerät zur Pflege von Wäschestücken und Verfahren zum Betreiben eines Haushaltsgeräts
CN110468554B (zh) * 2018-05-10 2022-01-04 青岛海尔洗涤电器有限公司 滚筒洗衣机及其喷淋控制方法
DE102018214137A1 (de) * 2018-08-22 2020-02-27 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Einlassdüse
DE102019207239A1 (de) * 2019-05-17 2020-11-19 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
KR102771771B1 (ko) 2019-06-28 2025-02-20 엘지전자 주식회사 세탁기의 제어방법
DE102022212508A1 (de) * 2022-11-23 2024-05-23 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung

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JP2011019607A (ja) * 2009-07-14 2011-02-03 Panasonic Corp 洗濯機
JP2013509283A (ja) * 2009-11-02 2013-03-14 エルジー エレクトロニクス インコーポレイティド 洗濯方法及び洗濯機
ES2549388T3 (es) * 2010-01-20 2015-10-27 Miele & Cie. Kg Máquina lavadora y equipo de circulación
ES2397655T3 (es) * 2010-09-14 2013-03-08 Miele & Cie. Kg Procedimiento para operar una bomba en una máquina lavadora, sistema mecatrónico y máquina lavadora
JP5873968B2 (ja) * 2011-09-05 2016-03-01 パナソニックＩｐマネジメント株式会社 洗濯機
JP5919488B2 (ja) * 2011-09-05 2016-05-18 パナソニックＩｐマネジメント株式会社 ドラム式洗濯機
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JP2013223551A (ja) * 2012-04-20 2013-10-31 Hitachi Appliances Inc 洗濯機
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TR201719303T3 (tr) * 2013-02-28 2019-05-21 Arcelik As Bi̇r çamaşir maki̇nesi̇nde kullanilan etki̇nli̇ği̇ i̇yi̇leşti̇ri̇lmi̇ş yikama ve durulama si̇stemi̇
KR102196182B1 (ko) * 2014-10-27 2020-12-29 엘지전자 주식회사 세탁기

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Also Published As

Publication number Publication date
WO2017021101A1 (de) 2017-02-09
DE102015214803A1 (de) 2017-02-09
RU2673307C1 (ru) 2018-11-23
PL3332059T3 (pl) 2020-07-13
CN107849794B (zh) 2020-04-24
CN107849794A (zh) 2018-03-27
EP3332059A1 (de) 2018-06-13

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