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WO2008003710A1 - Machine à laver séchante - Google Patents

Machine à laver séchante Download PDF

Info

Publication number
WO2008003710A1
WO2008003710A1 PCT/EP2007/056709 EP2007056709W WO2008003710A1 WO 2008003710 A1 WO2008003710 A1 WO 2008003710A1 EP 2007056709 W EP2007056709 W EP 2007056709W WO 2008003710 A1 WO2008003710 A1 WO 2008003710A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
washer
water
dryer
load
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.)
Ceased
Application number
PCT/EP2007/056709
Other languages
English (en)
Inventor
Kerem Erenay
Latif Tezduyar
Alper Baykut
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of WO2008003710A1 publication Critical patent/WO2008003710A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 present invention relates to a washer/dryer wherein a weight detecting method is used to determine the weight of the laundry loaded therein providing the efficient operation of the washers.
  • the amount of water intake, cleaning agents such as the detergent, fabric softener and the washing program and/or the duration is determined according to the type and weight of the laundry emplaced therein. Not knowing the amount of the laundry results in using extra water and cleaning agents and also in the increase of energy consumption from using excess water.
  • the load is determined by operating and stopping the motor and monitoring the stopping duration and the number of the voltage waves generated by the potentiometer. The amount of load is found by comparing the data values with the reference values.
  • the object of the present invention is to design a washer/dryer that determines the weight of the laundry emplaced therein as close to actual values as possible before starting the washing process without the requirement of additional measuring devices or sensors.
  • the actuation of the drum is maintained by a variable speed motor.
  • a speed controller is used that compares the actual speed of the motor with a predetermined reference speed and keeps the speed of the motor at the determined level.
  • the output signals of this speed controller are either firing angles or - PWM - pulse width modulation signals depending on the type of the motor and the control card decides on the voltage coefficient based on these signals, regulating the feed voltage of the motor.
  • the control card used in the washer/dryer of the present invention determines the amount of load placed in the washer/dryer by comparing the voltage coefficient values ascertained for adjusting the motor feed voltage with the expected voltage coefficient values already stored in the memory thereof. In order to make the assessment, some amount of water, less than the amount required for washing, is taken into the washer/ dryer before the washing and the voltage coefficient is observed. The aim is to determine the load amount by comparing this voltage coefficient value to the expected voltage coefficient value stored in the memory of the control card for every load amount. However, sometimes making a sound assessment with only one comparison is not possible, therefore water intake is continued and the change in the voltage coefficient values is observed as the water amount changes. Accordingly, the voltage coefficient values read for several water levels are compared with the voltage coefficient values in the memory of the control card for a certain load amount and the load amount can be determined correctly.
  • this data is used by the control card for deciding on the durations of the procedure and the amount of the water, detergent etc. to be used.
  • the control card stops water intake. If the required water volume for the determined load value is not yet reached, then water intake is continued until reaching that volume.
  • the load amount data is used in detecting the unbalanced load resulting from the distribution of laundry in the drum.
  • Rgure 1 - is the schematic view of a washer/dryer.
  • Rgure 2 - is the voltage - time graph that shows the entrance voltage being adjusted for feeding the motor in the preferred embodiment of the present invention.
  • Rgure 3 - is the voltage, current and firing - time graph that shows the entrance voltage being adjusted for feeding the motor in another embodiment of the present invention.
  • Rgure 4 - is the graph that shows the change of voltage coefficient for differing loads based on water volume in a load determining method implemented before a washing phase in the preferred embodiment of the present invention.
  • the washer/dryer (1) of the present invention preferably a washing machine, comprises a drum (2) wherein the laundry defined as load is emplaced, providing to wash and spin-dry by rotating about an axis, a variable speed motor (3) that activates this drum (2) and preferably a PI (proportional integral) or PID (proportional integral derivative) type speed controller (4), that compares a predetermined reference speed with the speed of the motor (3) and keeps the speed of the motor (3) at the determined level, a control card (5) that regulates the motor (3) voltage feeding by monitoring the change of the voltage coefficient with respect to time which is determined with the output signals of the speed controller (4) and specifies the load amount emplaced in the drum (2).
  • PI proportional integral
  • PID proportional integral derivative
  • the speed controller (4) tries to adjust the actual speed of the motor (3) to the reference speed level by constantly comparing the actual speed with the reference speed. For this adjustment, the control card (5) multiplies the entrance voltage with a coefficient of voltage to specify the voltage (V app ) that will be applied to the motor (3).
  • the motor (3) is a brushless direct current (BLDC) motor (3).
  • the output signals of the speed controller (4) are pulse width modulation signals (PWM).
  • PWM pulse width modulation signals
  • the speed controller (4) chops the entrance voltage (V ⁇ ) and applies V 1 and V 0 voltages respectively at T x and T 0 periods, and delivers to the motor (3) phase control switch with square waves.
  • the voltage (V app ) that is converted to the desired value reaches the motor (3) from the motor (3) phase control switch.
  • the speed controller (4) While the entrance voltage (V & ) is converted as mentioned above at the speed controller (4) applying the resulting voltage (V app ) to the motor (3), the speed controller (4) generates pulse width modulation (PWM) control signals as output signals.
  • the control card (5) starting off with PWM signals reaches the data of T [/(T ⁇ T 0 ) rate change with respect to time.
  • the T [/(T ⁇ T 0 ) rate is called PWM dutycycle.
  • the PWM dutycyle is detected as a graph that changes with respect to time according to the varying power requirements of the motor (3), the PWM dutycyle forms different profiles that define the different operating conditions of the motor (3) in the presence of varying loads confronted by the motor (3).
  • the voltage coefficient is the PWM dutycycle.
  • the motor (3) is an alternating current (AC) motor (3).
  • the output signals of the speed controller (4) are firing angle ( ⁇ ) signals.
  • the utilized speed controller (4) is preferably triac.
  • the ZC - zero cross of the alternating current that flows in waveforms of positive and negative alternations are caught and the speed controller (4) (triac) is fired at spaced apart time delays by referencing to the zero crossing points. These time delays are called firing angle ( ⁇ ). Current is produced, from the zero voltage of the power network, when the triac is fired after the firing angle ( ⁇ ).
  • the triac cannot intervene to cut off the current of the motor (3), the current decreases in the negative alternation of the voltage and when shut off the triac closes to fire again.
  • the speed of the motor (3) is regulated by adjusting the firing angle ⁇ .
  • PI Proportional Integral
  • PID Proportional Integral Derivative
  • the voltage coefficient changes with respect to amount of laundry contained and the water volume intake in the washer/dryer (1).
  • the expected voltage coefficient value corresponding to each load- water pair is recorded in the memory of the control card (5).
  • the voltage coefficient for two different loads in a certain volume of water can be the same. However, all of the voltage coefficient values of an amount of load in different volumes of water are not the same as the voltage coefficient values of another amount of load. Therefore, the amount of load cannot always be correctly ascertained by observing the voltage coefficient value of a certain volume of water.
  • the amount of load can be determined if the voltage coefficient values in more than one volume of water is close to the expected voltage coefficient for a load amount.
  • the coefficient of voltage is observed by initially taking a volume of water less than the amount for washing in into the drum (2), then water is taken in incrementally increasing amounts and the voltage coefficient is continued to be observed for each incremental amount (water volume) and at each increment the voltage coefficient value is compared by the control card (5) with the value stored in the memory thereof. As a result of the comparisons done up till that moment, if the voltage coefficient values corresponding to a load amount (X) match while none of the values corresponding to other load amounts matches, then the control card (5) decides that the load is the amount (X).
  • the control card (5) decides that the load is 0 kg. if the voltage coefficient is below 0.1 and around 0.075. For other load amounts the voltage coefficient values are close to each other. In this case, water intake into the drum (2) continues, the values start to be different when 4 and 6 liters are reached respectively.
  • the control card (5) decides that the load is 1 kg. if the voltage coefficient value is decreasing when volume changes from 4 liters to 6 liters, and 3 kg. if it is increasing ( Figure 4).
  • the amounts of required washing, rinsing water, detergent amounts and/or softener amount and at least one of the suitable washing durations for each load amount are recorded in the memory of the control card (5).
  • the amounts of water, detergent and/or softener and the process durations are adjusted.
  • the control card (5) stops the water intake. If the required volume of water is not reached for the determined load amount (X), then water intake continues until reaching that volume. After this phase, the washer/dryer (1) implements pre-washing, washing, rinsing and/or spin-drying or a combination of these depending on the selection specified by the user. During these phases the process durations and the amounts of water, detergent etc. are decided on by using the load amount (X) dala ascertained by the control card (5).
  • the control card (5) uses this information to ascertain the unbalanced load in the drum (2) resulting from the distribution of laundry.
  • the washer/dryer (1) of the present invention By means of the washer/dryer (1) of the present invention, the weight of the laundry placed therein before the washing process starts, that is the load amount (X) is ascertained as close to actual values as possible. By this means, water and detergent savings is possible and extra energy consumption is prevented as well. Furthermore, since the already used voltage coefficient value is utilized for adjusting the motor (3) feed voltage in determining the load amount (X), the need for further measurements and the use of additional measurement devices or sensors is eliminated. The washer/ dryer (1) is enabled to operate more efficiently and reliably.

Landscapes

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

Abstract

La présente invention concerne une machine à laver séchante (1) qui peut identifier le poids du linge placé dans celle-ci de manière aussi proche que possible que la valeur réelle, avant que ne démarre le procédé de lavage, en utilisant la valeur de coefficient de tension déjà utilisée pour ajuster la tension d'alimentation du moteur (3) sans besoin de mesures supplémentaires.
PCT/EP2007/056709 2006-07-04 2007-07-04 Machine à laver séchante Ceased WO2008003710A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRTR2006/03430 2006-07-04
TR200603430 2006-07-04

Publications (1)

Publication Number Publication Date
WO2008003710A1 true WO2008003710A1 (fr) 2008-01-10

Family

ID=38573415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/056709 Ceased WO2008003710A1 (fr) 2006-07-04 2007-07-04 Machine à laver séchante

Country Status (2)

Country Link
TR (1) TR200808269T1 (fr)
WO (1) WO2008003710A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194180A2 (fr) 2008-12-02 2010-06-09 Samsung Electronics Co., Ltd. Machine à laver et procédé de détection du poids du linge contenu dedans
US7971810B2 (en) 2007-09-05 2011-07-05 Emerson Electric Co. Food waste disposer with PWM based control of grinding profile
US8166590B2 (en) 2009-04-16 2012-05-01 Whirlpool Corporation Method and apparatus for determining laundry load size
US8631527B2 (en) 2009-08-10 2014-01-21 Whirlpool Corporation Laundry treating appliance with tumble pattern control
US8914930B2 (en) 2010-04-13 2014-12-23 Whirlpool Corporation Laundry treating appliance with load amount detection

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0527452A1 (fr) * 1991-08-09 1993-02-17 Matsushita Electric Industrial Co., Ltd. Détection de la quantité de linge dans les machines à laver
GB2269825A (en) * 1992-08-21 1994-02-23 Toshiba Kk Compensation of determined laundry volume in accordance with supply voltage
EP0631001A2 (fr) * 1989-08-30 1994-12-28 FISHER & PAYKEL LIMITED Commande du niveau d'eau dans les machines à laver
JPH0739676A (ja) * 1993-07-27 1995-02-10 Matsushita Electric Ind Co Ltd ドラム式電気洗濯機
EP0898004A1 (fr) * 1991-06-28 1999-02-24 General Electric Company Commande électronique de machine à laver comportant une détermination automatique du poids et de la nature du linge
EP1201811A2 (fr) * 2000-10-24 2002-05-02 Kabushiki Kaisha Toshiba Machine à laver à tambour avec dispositif pour déterminer le poids du linge
US20040103485A1 (en) * 2002-11-26 2004-06-03 Do Gi Hyeong Washing machine and control method thereof
US20050016226A1 (en) * 2001-09-05 2005-01-27 Yoji Okazaki Washing machine
US20050015890A1 (en) * 2003-07-23 2005-01-27 Lg Electronics Inc. Method and apparatus for detecting laundry weight of washing machine
US20050028299A1 (en) * 2003-08-07 2005-02-10 Lg Electronics Inc. Method for sensing amount of clothes in washing machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631001A2 (fr) * 1989-08-30 1994-12-28 FISHER & PAYKEL LIMITED Commande du niveau d'eau dans les machines à laver
EP0898004A1 (fr) * 1991-06-28 1999-02-24 General Electric Company Commande électronique de machine à laver comportant une détermination automatique du poids et de la nature du linge
EP0527452A1 (fr) * 1991-08-09 1993-02-17 Matsushita Electric Industrial Co., Ltd. Détection de la quantité de linge dans les machines à laver
GB2269825A (en) * 1992-08-21 1994-02-23 Toshiba Kk Compensation of determined laundry volume in accordance with supply voltage
JPH0739676A (ja) * 1993-07-27 1995-02-10 Matsushita Electric Ind Co Ltd ドラム式電気洗濯機
EP1201811A2 (fr) * 2000-10-24 2002-05-02 Kabushiki Kaisha Toshiba Machine à laver à tambour avec dispositif pour déterminer le poids du linge
US20050016226A1 (en) * 2001-09-05 2005-01-27 Yoji Okazaki Washing machine
US20040103485A1 (en) * 2002-11-26 2004-06-03 Do Gi Hyeong Washing machine and control method thereof
US20050015890A1 (en) * 2003-07-23 2005-01-27 Lg Electronics Inc. Method and apparatus for detecting laundry weight of washing machine
US20050028299A1 (en) * 2003-08-07 2005-02-10 Lg Electronics Inc. Method for sensing amount of clothes in washing machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7971810B2 (en) 2007-09-05 2011-07-05 Emerson Electric Co. Food waste disposer with PWM based control of grinding profile
EP2194180A2 (fr) 2008-12-02 2010-06-09 Samsung Electronics Co., Ltd. Machine à laver et procédé de détection du poids du linge contenu dedans
EP2194180A3 (fr) * 2008-12-02 2010-09-08 Samsung Electronics Co., Ltd. Machine à laver et procédé de détection du poids du linge contenu dedans
US8166590B2 (en) 2009-04-16 2012-05-01 Whirlpool Corporation Method and apparatus for determining laundry load size
US8631527B2 (en) 2009-08-10 2014-01-21 Whirlpool Corporation Laundry treating appliance with tumble pattern control
US8914930B2 (en) 2010-04-13 2014-12-23 Whirlpool Corporation Laundry treating appliance with load amount detection

Also Published As

Publication number Publication date
TR200808269T1 (tr) 2009-02-23

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