EP4534752A1 - Entleerungspumpe für ein haushaltsgerät mit einem filter für mikrokunststoffe und zugehöriges steuerungsverfahren - Google Patents

Entleerungspumpe für ein haushaltsgerät mit einem filter für mikrokunststoffe und zugehöriges steuerungsverfahren Download PDF

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Publication number
EP4534752A1
EP4534752A1 EP24204325.5A EP24204325A EP4534752A1 EP 4534752 A1 EP4534752 A1 EP 4534752A1 EP 24204325 A EP24204325 A EP 24204325A EP 4534752 A1 EP4534752 A1 EP 4534752A1
Authority
EP
European Patent Office
Prior art keywords
discharge pump
filter
control method
rotational speed
flow rate
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.)
Granted
Application number
EP24204325.5A
Other languages
English (en)
French (fr)
Other versions
EP4534752B1 (de
Inventor
Elio Marioni
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.)
Askoll Holding SRL
Original Assignee
Askoll Holding SRL
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 Askoll Holding SRL filed Critical Askoll Holding SRL
Publication of EP4534752A1 publication Critical patent/EP4534752A1/de
Application granted granted Critical
Publication of EP4534752B1 publication Critical patent/EP4534752B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/081—Safety arrangements for preventing water damage
    • D06F39/082—Safety arrangements for preventing water damage detecting faulty draining operations, e.g. filter blockage, faulty pump
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/48—Current or voltage of the motor driving the pump
    • 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
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/74—Responding to irregular working conditions, e.g. malfunctioning of pumps 

Definitions

  • mechanical filters placed on the drain line of a washing machine are known, in order to incorporate microplastic particles before the water is released into the drain: these mechanical filters may be installed between the washing machine drain and the wall connection or, if originally provided by the manufacturer, directly integrated into the casing of the appliance.
  • variable hydraulic resistance of the filter often leads to the need of replacing or cleaning the filter itself before it is completely saturated. Indeed, the progressive decrease in the flow rate, in addition to being potentially unwanted since it lengthens the washing cycle times, conflicts in many cases with the control electronics, which can diagnose a clogging in the drain or a malfunction of the pump due to the lengthening of the water evacuation time.
  • control method for a variable speed discharge pump of a large household appliance for washing and/or drying linen wherein at least one filter for collecting microplastics is placed downstream of said discharge pump, said control method comprising the steps of:
  • the household on which the discharge pump operates is a washing machine, a clothes dryer or a washer dryer.
  • the discharge pump comprises an electric motor, preferably a three-phase direct current electric motor, such as a BLDC motor.
  • the method according to the present invention may comprise a step of obtaining an electric parameter that is indicative of the power input of the discharge pump in order to indirectly monitor the decrease in the flow rate.
  • said speed is thus increased with the decrease in the power input.
  • the electric parameters obtained may comprise electric current and voltage and/or back electromotive force.
  • the condition of exhausted filter may be identified upon reaching a pre-set maximum rotational speed. In this case, previous laboratory tests may have been performed to determine this maximum rotational speed.
  • condition of exhausted filter may be identified in an iterative manner until the moment when the increase in the rotational speed does not allow any longer to restore the power input above a value of minimum threshold.
  • the increase in the rotational speed of the pump occurs by discrete steps each time a control value crossing a threshold is detected.
  • said control value may be the power input, case in which the speed is increased by a discrete step each time the detected power input is below a minimum threshold.
  • control method may operate a continuous adjustment of the feedback rotational speed with respect to the acquired value of the control parameter, for instance the power input.
  • a household appliance for washing and/or drying linen comprising:
  • reference number 1 globally indicates a household appliance for washing and/or drying linen, in particular a washing machine, comprising a discharge pump 4 according to the present invention.
  • the washing machine 1 may also comprise, in a per se known manner, a selector 16 of washing programs, a pressure switch 17, a resistor 18 and a temperature probe 19, which will no further be described since irrelevant to the purposes of this invention.
  • the electrovalve 141 enables the passage of water from the connection connected to the water mains into the duct 142, up to the detergent drawer 15 and from here into the drum 111.
  • the filter 3 comprises an external closing body and an internal filtering body, able to contain and block the microplastic particles present inside the clothing items.
  • the internal filtering body may be advantageously integrated in a cartridge, replaceable by the user. Alternatively, the filter may be reusable after cleaning the filter element by the user.
  • the discharge pump 4 is a variable speed pump; preferably, it comprises a three-phase direct current electric motor, for instance a BLDC motor; however, without departing from the scope of protection of the present invention, the motor may also be of other types, provided that the possibility of speed control is contemplated.
  • control board S Onboard said discharge pump 4 a control board S is provided, which is configured to operate said pump according to a control method described hereinafter.
  • the electrovalve allows the passage of water inside the inlet circuit 14, toward the detergent drawer 15.
  • the method provides for a first control step 300 in which it is checked whether the power input Pass has decreased below a certain threshold value Pmin.
  • the control board S provides for increasing the speed ⁇ from its current value to a higher value, according to a pre-set gradual increase table. For instance, if the initial speed ⁇ 1 is equal to 1000 rpm, a subsequently set speed ⁇ 2 may be equal to 1300 rpm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP24204325.5A 2023-10-04 2024-10-02 Entleerungspumpe für ein haushaltsgerät mit einem filter für mikrokunststoffe und zugehöriges steuerungsverfahren Active EP4534752B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102023000020559A IT202300020559A1 (it) 2023-10-04 2023-10-04 Pompa di scarico per elettrodomestico asservita a filtro per microplastiche e relativo metodo di controllo

Publications (2)

Publication Number Publication Date
EP4534752A1 true EP4534752A1 (de) 2025-04-09
EP4534752B1 EP4534752B1 (de) 2026-04-15

Family

ID=89158630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24204325.5A Active EP4534752B1 (de) 2023-10-04 2024-10-02 Entleerungspumpe für ein haushaltsgerät mit einem filter für mikrokunststoffe und zugehöriges steuerungsverfahren

Country Status (2)

Country Link
EP (1) EP4534752B1 (de)
IT (1) IT202300020559A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012069288A1 (en) * 2010-11-22 2012-05-31 Electrolux Home Products Corporation N.V. Method of operating a washing machine and washing machine
US8439052B2 (en) * 2004-01-23 2013-05-14 Bsh Bosch Und Siemens Hausgeraete Gmbh Liquid-conducting electrical household appliance
WO2019045632A1 (en) * 2017-08-31 2019-03-07 Roderinno Ab WASHING MACHINE AND METHOD
US20210277562A1 (en) * 2018-07-06 2021-09-09 Lg Electronics Inc. Drain pump driving apparatus and laundry treatment machine including the same
WO2022203217A1 (ko) 2021-03-22 2022-09-29 삼성전자주식회사 필터를 포함하는 배수 유로 및 이를 갖는 세탁기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8439052B2 (en) * 2004-01-23 2013-05-14 Bsh Bosch Und Siemens Hausgeraete Gmbh Liquid-conducting electrical household appliance
WO2012069288A1 (en) * 2010-11-22 2012-05-31 Electrolux Home Products Corporation N.V. Method of operating a washing machine and washing machine
WO2019045632A1 (en) * 2017-08-31 2019-03-07 Roderinno Ab WASHING MACHINE AND METHOD
US20210277562A1 (en) * 2018-07-06 2021-09-09 Lg Electronics Inc. Drain pump driving apparatus and laundry treatment machine including the same
WO2022203217A1 (ko) 2021-03-22 2022-09-29 삼성전자주식회사 필터를 포함하는 배수 유로 및 이를 갖는 세탁기

Also Published As

Publication number Publication date
EP4534752B1 (de) 2026-04-15
IT202300020559A1 (it) 2025-04-04

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