EP2985382B1 - Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine - Google Patents

Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine Download PDF

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Publication number
EP2985382B1
EP2985382B1 EP14180910.3A EP14180910A EP2985382B1 EP 2985382 B1 EP2985382 B1 EP 2985382B1 EP 14180910 A EP14180910 A EP 14180910A EP 2985382 B1 EP2985382 B1 EP 2985382B1
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EP
European Patent Office
Prior art keywords
washing machine
angular speed
drum
laundry
engine
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
EP14180910.3A
Other languages
English (en)
French (fr)
Other versions
EP2985382A1 (de
Inventor
Zuzana Vasickova
Pavel Stepan
Milan Janicek
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.)
Alliance Laundry Ce SRO
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Alliance Laundry Ce SRO
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 Alliance Laundry Ce SRO filed Critical Alliance Laundry Ce SRO
Priority to ES14180910.3T priority Critical patent/ES2596458T3/es
Priority to DK14180910.3T priority patent/DK2985382T3/en
Priority to SI201430080A priority patent/SI2985382T1/sl
Priority to EP14180910.3A priority patent/EP2985382B1/de
Publication of EP2985382A1 publication Critical patent/EP2985382A1/de
Application granted granted Critical
Publication of EP2985382B1 publication Critical patent/EP2985382B1/de
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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2103/26—Imbalance; Noise 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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
    • 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
    • D06F2105/42—Detergent or additive supply
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance

Definitions

  • the invention concerns the automatic weighing method of laundry in a washing machine.
  • a washing machine consumes specific quantity of water, washing detergent and electric energy.
  • consumption of those items in a washing machine without a weighing system depends on a maximal charge of the washing machine. So, if the washing machine is only one quarter charged of its maximum, a consumption of water, electric energy and detergent is same as for a fully charged washing machine. For the reason of optimal reduction of consumed water and energy the washing machine needs to have an information about amount of laundry inserted into the drum of the washing machine for the specific washing process. There are many ways to detect weight of laundry inside the drum of the washing machine.
  • the aim of the present invention is to disclose an automatic weighing method for a washing machine, which eliminates above mentioned disadvantages of known systems and enables accurate weighing of laundry without substantial increase of price of the system.
  • the automatic weighing method for a washing machine comprising a drum and an engine for rotating said drum wherein the determination of the temperature of the engine is processed by a frequency modulator based on a value of calculated resistance of a winding of the engine of the washing machine, where for the calculation of the resistance of the winding a value of current is measured on the winding of the engine during its inaction, afterwards the angular speed of the drum of the washing machine is increased up to a distribution angular speed ( ⁇ 0 ), which is intended to distribute laundry in the drum of the washing machine, afterwards the angular speed of the drum of the washing machine is increased up to a medium angular speed ( ⁇ 1 ), which is intended to spread the laundry on the inner surface of the drum of the washing machine, afterwards the angular speed of the drum of the washing machine is decreased to a measuring angular speed ( ⁇ 2 ), and during maintenance of the angular speed at the measuring angular speed ( ⁇ 2 ) a value of unbalance of the drum of the
  • the angular speed is increased up to the distribution angular speed ( ⁇ 0 ) by steps.
  • the distribution angular speed ( ⁇ 0 ) is from 90 to 150 rpm.
  • the medium angular speed ( ⁇ 1 ) is from 300 to 500 rpm.
  • the maximal angular speed ( ⁇ 3 ) is from 450 to 550 rpm, while the maximal angular speed ( ⁇ 3 ) is higher than the medium angular speed ( ⁇ 1 ).
  • determination of the value of unbalance depends on a rage of a value of current amplitude of the engine and on an average value of current of the engine during maintenance of the angular speed at the measuring angular speed ( ⁇ 2 ).
  • Fig. 1 presents a graph of continuance of angular speed of a drum of a washing machine.
  • An automatic weighing method of laundry in a washing machine is based on principle of energy conservation, i.e. energy generated by engine intended to start spinning of the drum of the washing machine charged by laundry is directly proportional to weight of the laundry placed in the drum of the washing machine. So, high weight of the laundry means high effected work. Because the value of effected work is not influenced only by weight of laundry inserted into the drum of the washing machine, this method is not possible to use without calculation of correction factors.
  • Second of those correction factors is unbalance of laundry in the drum.
  • High unbalance of the laundry means that high work have to be effected for beginning of rotation of the drum of the washing machine up to predetermined angular speed for the same weight of the laundry. This relation is possible to determine by measuring and subsequently setting the correction factor. According to that, measuring of unbalance of laundry in the drum of the washing machine is needed to be inserted into the measuring sequence.
  • Another correction factor is temperature of an engine and of whole mechanical system of the washing machine. High temperature means lower effected work for acceleration of rotation of the drum of the washing machine for the same weight of laundry. This relation is possible to determine by measuring and subsequently setting the correction parameters. Temperature of the system is specified by temperature of the engine, which is determined without any additional sensors by frequency modulator.
  • Continuance of an automatic weighing method of laundry in the washing machine comprises following steps illustrated on Fig. 1 , which presents the graph of continuance of angular speed of the drum of the washing machine during weighing of laundry:
  • Calculation of weight of laundry in the drum of the washing machine is based on principle of direct proportion between energy consumed during acceleration of the drum, and weight of laundry in the drum of the washing machine, and further it is based on previously set dependencies on temperature of engine and on a value of unbalance of the laundry in the drum of the washing machine.
  • An advantage of the presented technical solution in comparison to prior of the art is determination of weight of laundry without use of any additional sensors arranged in a construction of the washing machine, so production cost of the washing machine is not increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (6)

  1. Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine, die mit einer Trommel und einem Motor versehen ist, dadurch gekennzeichnet, dass
    - Wird die Motortemperatur mit Hilfe des Frequenzumformers, mit Hilfe des Wertes von dem ausgerechneten Widerstand der Motorwindung der Waschmaschine festgestellt, wobei für die Berechnung des Widerstandes der Motorwindung der Waschmaschine der Wert des auf der Motorwindung der Waschmaschine gemessenen Storms im Moment verwendet wird, in dem der Motor nicht läuft,
    - folglich wird die Drehzahl der Trommel der Waschmaschine auf die Distributionsdrehzahl (ω0) erhöht, die für die Verteilung der Wäsche in der Trommel der Waschmaschine vorgegeben ist,
    - folglich wird die Drehzahl der Trommel der Waschmaschine auf die Mitteldrehzahl (ω1) erhöht, die für die Verteilung der Wäsche in der inneren Fläche der Trommel der Waschmaschine vorgegeben ist,
    - folglich wird die Drehzahl der Trommel der Waschmaschine auf die messbaren Drehzahl (ω2) gesenkt, wobei während Verbleiben der Drehzahlgeschwindigkeit auf dem Wert der messbaren Drehzahl (ω2) der Wert der Unwucht der Trommel der Waschmaschine festgestellt wird,
    - folglich wird die Drehzahl der Trommel der Waschmaschine auf die höchste Drehzahl (ω3) erhöht, wobei während Beschleunigung der Wert der für diese Beschleunigung durch den Motor verbrauchten Energie,
    - folglich wird aufgrund der festgestellten Motortemperatur , der Größe der Unwucht der Wäsche in der Trommel der Waschmaschine und der Summe des während der Beschleunigung der Trommel der Waschmaschine von der messbaren Drehzahl (ω2) auf die höchste Drehzahl (ω3) verbrauchten Stroms das Gewicht der Wäsche in der Trommel der Waschmaschine berechnet
  2. Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine nach Anspruch 1 dadurch gekennzeichnet, dass die Drehzahl der Trommel der Waschmaschine werden auf die Distributionsdrehzahl (ω0) stufenweise erhöht.
  3. Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine nach Anspruch 1 dadurch gekennzeichnet, dass die Distributionsdrehzahl (ω0) sich im Bereich von 90 bis 150 RpM bewegt.
  4. Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine nach Anspruch 1 dadurch gekennzeichnet, dass die Mitteldrehzahl (ω1) sich im Bereich von 300 bis 500 RpM bewegt.
  5. Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine nach Anspruch 1 dadurch gekennzeichnet, dass die höchste Drehzahl (ω3) sich im Bereich von 450 bis 550 RpM bewegt, wobei die höchste Drehzahl (ω3) höher als die Mitteldrehzahl (ω1) ist.
  6. Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine nach Anspruch 1 dadurch gekennzeichnet, dass der Wert der Unwucht aufgrund des Verhältnisses der Amplitudengröße des Motorstroms zu dem bei der konstanten messbaren Drehzahl (ω2) gemessenen Mittelwertes des Motorstroms festgestellt wird.
EP14180910.3A 2014-08-14 2014-08-14 Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine Active EP2985382B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES14180910.3T ES2596458T3 (es) 2014-08-14 2014-08-14 Procedimiento de pesaje automático de la colada en una lavadora
DK14180910.3T DK2985382T3 (en) 2014-08-14 2014-08-14 Automatic weighing method of laundry in a washing machine
SI201430080A SI2985382T1 (sl) 2014-08-14 2014-08-14 Postopek samodejnega tehtanja perila v pralnem stroju
EP14180910.3A EP2985382B1 (de) 2014-08-14 2014-08-14 Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14180910.3A EP2985382B1 (de) 2014-08-14 2014-08-14 Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine

Publications (2)

Publication Number Publication Date
EP2985382A1 EP2985382A1 (de) 2016-02-17
EP2985382B1 true EP2985382B1 (de) 2016-08-03

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EP14180910.3A Active EP2985382B1 (de) 2014-08-14 2014-08-14 Verfahren zum automatischen Wiegen von Wäsche in einer Waschmaschine

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EP (1) EP2985382B1 (de)
DK (1) DK2985382T3 (de)
ES (1) ES2596458T3 (de)
SI (1) SI2985382T1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110872762B (zh) * 2018-08-31 2022-02-25 无锡飞翎电子有限公司 滚筒洗衣机的偏心检测方法
CN110872761B (zh) * 2018-08-31 2022-02-25 无锡飞翎电子有限公司 滚筒洗衣机的偏心检测方法
CN111705471A (zh) * 2020-06-17 2020-09-25 江苏新安电器股份有限公司 一种实现bldc滚筒洗衣机干布重量感知的软件算法

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Publication number Priority date Publication date Assignee Title
BR0300737A (pt) 2003-03-13 2004-11-16 Multibras Eletrodomesticos Sa Sistema e processo para detecção de carga de roupa em máquina lavadora automática
DE10331934B3 (de) * 2003-07-15 2004-10-28 Danfoss Drives A/S Verfahren zum Steuern eines Waschmaschinen-Motors und Waschmaschinen-Motor
JP4375447B2 (ja) 2007-06-26 2009-12-02 パナソニック株式会社 洗濯機
US20090106913A1 (en) * 2007-10-30 2009-04-30 Suel Ii Richard D Measuring apparatus and method
KR20100022145A (ko) * 2008-08-19 2010-03-02 삼성전자주식회사 세탁기 및 모터의 제어 방법
IT1394427B1 (it) 2009-06-17 2012-06-15 Grandimpianti Ile Ali S P A Procedimento per la pesatura di biancheria da lavare all'interno di una lavatrice, particolarmente per lavatrici industriali

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DK2985382T3 (en) 2016-11-21
SI2985382T1 (sl) 2016-11-30
EP2985382A1 (de) 2016-02-17
ES2596458T3 (es) 2017-01-09

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