EP2354290B1 - Method for controlling washing machine furnished with liquid detergent dispenser - Google Patents

Method for controlling washing machine furnished with liquid detergent dispenser Download PDF

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Publication number
EP2354290B1
EP2354290B1 EP09823802.5A EP09823802A EP2354290B1 EP 2354290 B1 EP2354290 B1 EP 2354290B1 EP 09823802 A EP09823802 A EP 09823802A EP 2354290 B1 EP2354290 B1 EP 2354290B1
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EP
European Patent Office
Prior art keywords
liquid detergent
fabric softener
container tank
washing machine
drum
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
EP09823802.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2354290A2 (en
EP2354290A4 (en
Inventor
Yong Wook Kim
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo Electronics Co Ltd
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 Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of EP2354290A2 publication Critical patent/EP2354290A2/en
Publication of EP2354290A4 publication Critical patent/EP2354290A4/en
Application granted granted Critical
Publication of EP2354290B1 publication Critical patent/EP2354290B1/en
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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
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state
    • 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
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user

Definitions

  • the present invention relates to a method for controlling washing machine furnished with liquid detergent dispenser and, more particularly, to a method for controlling washing machine furnished with liquid detergent dispenser, which allows a liquid detergent or a fabric softener to be supplied in an accurate amount depending on the amount of laundry.
  • washing machines remove a variety of contaminants adhered to laundry, such as clothes, bedclothes and the like, using detergent emulsification, rubbing action of a water flow caused by rotation of a pulsator, impact applied to the laundry by the pulsator, and the like.
  • fully automatic washing machines have been developed to automatically perform a series of processes such as a washing cycle, a rinsing cycle and a spin-drying cycle without user's manipulation during operation of the washing machine.
  • washing machines can be generally classified into a top-loading washing machine having an upright tub and a drum washing machine having a horizontally disposed tub.
  • the drum washing machine can further reduce the total height of the washing machine while increasing washing capacity substantially without any laundry entanglement, as compared with the top-loading washing machine, and demand for drum washing machines has been gradually increasing.
  • WO 2005085511 A refers to a load detection method which is used in washers, which enables the washer to operate efficiently by detecting the weight of the laundry placed inside the drum, which determines the water, detergent and softener quantity and the washing program and/or period according to the type and weight of the laundry and at the same time the unbalanced load due to the distribution of the laundry inside drum during spinning.
  • EP 0906983 A2 discloses a method according to the preamble of present claim 1.
  • a series of processes such as a washing cycle, a rinsing cycle and a spin-drying cycle are automatically performed when pressing a start button after setting the kind of laundry or washing time on a control panel.
  • liquid detergents susceptible to dilution in wash water and ensuring excellent emulsification have been broadly distributed in recent years. If the liquid detergent is supplied to a drum of the washing machine where the wash water has already been supplied, it cannot be supplied thereto through an open door of the washing machine. Thus, in this case, the liquid detergent must be applied directly to laundry before supply of wash water or supplied to the drum through the detergent container.
  • the present invention is conceived to solve such problems of the related art, and an aspect of the invention is to provide a method for controlling washing machine furnished with liquid detergent dispenser, which allows a liquid detergent or a fabric softener to be supplied in an accurate amount depending on the amount of laundry.
  • a method for controlling washing machine is defined by the features of claim 1.
  • a preferred embodiment of the invention is defined in claim 2.
  • Fig. 1 is a side view of a washing machine in accordance with one embodiment of the invention
  • Fig. 2 is an enlarged view of a liquid detergent supply unit and a fabric softener supply unit of the washing machine in accordance with one embodiment of the invention.
  • a washing machine 100 includes a cabinet 110, a tub 120, a detergent container 130, a liquid detergent supply unit 140, a fabric softener supply unit 150, and a controller 160.
  • the detergent container 130, the liquid detergent supply unit 140, and the fabric softener supply unit 150 are disposed inside the cabinet 110.
  • the detergent container 130 receives a powdery detergent, which is supplied into the tub 120 while being dissolved by wash water supplied through a water supply pipe 131 connected to a water supply.
  • the tub 120 is provided therein with a drum 125 to which laundry and wash water are supplied.
  • a liquid detergent and a fabric softener are respectively received in the liquid detergent supply unit 140 and the fabric softener supply unit 150 to be supplied in accurate amounts depending on the weight of laundry.
  • Supply of the liquid detergent or the fabric softener depending on the weight of laundry is controlled by the controller 160.
  • the liquid detergent supply unit 140 includes a liquid detergent container tank 141, a supply pipe 143 which connects the liquid detergent container tank 141 to the drum 125 to allow the liquid detergent to be supplied to the drum 125 therethrough, and a detergent discharge part 145 which discharges the liquid detergent from the liquid detergent container tank 141.
  • the liquid detergent container tank 141 is provided at one side thereof with a pouring port 141a through which the liquid detergent can be poured into the liquid detergent container tank 141, and therein with a detector 147 which detects a remaining quantity of the liquid detergent in the liquid detergent container tank 141.
  • the detector 147 includes a first detection sensor 147a for detecting a high level of the liquid detergent in the liquid detergent container tank 141 and a second detection sensor 147b for detecting a low level of the liquid detergent therein.
  • electrode rods may be used as the first and second detection sensors 147a, 147b.
  • the supply pipe 143 is provided with a first open/close valve 143a, which open or close the supply pipe 143 to allow the liquid detergent to flow according to control of the controller 160.
  • the supply pipe 143 is described as being opened or closed by the first open/close valve 143a, but the invention is not limited thereto. That is, supply of the liquid detergent may be controlled without the first open/close valve 143a.
  • a part of the supply pipe 143 extending from the one end of the supply pipe 143 may be bent to pass through a higher point than an upper end of the liquid detergent container tank 141.
  • the liquid detergent can be supplied into the drum 125 through the supply pipe 143 only by supplying compressed air into the liquid detergent container tank 141 through the detergent discharge part 145.
  • the detergent discharge part 145 for discharging the liquid detergent includes a first air-supply tube 145a connected to the liquid detergent container tank 141 and a first compressor 145b for generating compressed air.
  • the compressed air generated by the first compressor 145b is supplied into the liquid detergent container tank 141 through the first air-supply tube 145a.
  • the compressed air generated by the first compressor 145b is supplied into the liquid detergent container tank 141, the liquid detergent inside the liquid detergent container tank 141 is discharged through the supply pipe 143 by an air pressure of the compressed air.
  • the first compressor 145b is controlled by the controller 160 such that a quantity of liquid detergent to be supplied to the drum 125 can be controlled depending on the weight of laundry.
  • the controller 160 controls the first compressor 145b to generate compressed air for a predetermined duration by calculating the supply quantity of liquid detergent based on the weight of laundry.
  • the detergent discharge part 145 allows the first compressor 145b to generate compressed air for a predetermined duration according to control of the controller 160 and supplies the compressed air to the liquid detergent container tank 141 such that the liquid detergent in the liquid detergent container tank 141 is supplied to the drum 125 through the supply pipe 143 by the air pressure.
  • the washing machine 100 further includes the fabric softener supply unit 150 which is also controlled by the controller 160 to supply an accurate quantity of fabric softener depending on the weight of laundry.
  • the fabric softener supply unit 150 includes a fabric softener container tank 151, a connection pipe 153 through which the supply pipe 143 of the liquid detergent supply unit 140 communicates with the fabric softener container tank 151, and a fabric softener discharge part 155 which discharges the fabric softener from the fabric softener container tank 151 according to control of the controller 160.
  • connection pipe 153 is provided with a second open/close valve 153a, which opens or closes the connection pipe 153 according to control of the controller 160.
  • the fabric softener discharged through the connection pipe 153 is supplied to the drum 125 through the supply pipe 143.
  • the fabric softener container tank 151 is provided at one side thereof with a pouring port 151a through which the fabric softener can be poured into the fabric softener container tank 151, and therein with a detector 157 which detects a remaining quantity of fabric softener in the fabric softener container tank 151.
  • the detector 157 of the fabric softener supply unit 150 includes a first detection sensor 157a for detecting a high level of the fabric softener in the fabric softener container tank 151 and a second detection sensor 157b for detecting a low level of the fabric softener therein.
  • electrode rods may be used as the first and second detection sensors 157a, 157b.
  • the fabric softener discharge part 155 supplies compressed air into the fabric softener container tank 151 to control the discharge quantity of fabric softener depending on the weight of laundry.
  • the fabric softener discharge part 155 includes a second air-supply tube 155a which communicates with the fabric softener container tank 151, and a second compressor 155b which generates compressed air.
  • the compressed air generated by the second compressor 155b is supplied to the fabric softener container tank 151 through the second air-supply tube 155a.
  • the fabric softener in the fabric softener container tank 151 is discharged into the drum 125 through the connection pipe 153 by the air pressure of the compressed air.
  • the second compressor 155b is controlled by the controller 160 to generate compressed air for a predetermined duration depending on the weight of laundry.
  • the fabric softener discharge part 155 allows the second compressor 155b to generate compressed air for a predetermined duration according to control of the controller 160 and supplies the compressed air to the fabric softener container tank 151 such that the fabric softener in the fabric softener container tank 151 is supplied to the drum 125 by air pressure.
  • the controller 160 determines the supply quantity of liquid detergent or fabric softener depending on the weight of laundry and operates the first and second compressors 145b, 155b for a predetermined duration depending on the supply quantity of liquid detergent or fabric softener to supply the liquid detergent or fabric softener.
  • controller 160 opens the first open/close valve 143a and closes the second open/close valve 153b during operation of the first compressor 145b, and opens the second open/close valve 153a and closes the first open/close valve 143b during operation of the second compressor 155b.
  • the controller 160 allows a display unit of the washing machine 100 to display the level of the liquid detergent or the fabric softener if the level of the liquid detergent or the fabric softener detected by the detectors 147, 157 of the liquid detergent supply unit 140 and the fabric softener supply unit 150 is a predetermined level or less.
  • the controller 160 detects the weight of laundry and calculates quantities of wash water and liquid detergent or fabric softener to be supplied to the drum 125.
  • the first compressor 145b When the wash water is supplied to the drum 125 depending on the weight of laundry, the first compressor 145b is operated for a predetermined duration so that the liquid detergent is supplied from the liquid detergent container tank 141 to the drum 125. At this time, the first open/close valve 143a of the supply pipe 143 is open and the second open/close valve 153b of the connection pipe 153 is closed.
  • the controller 160 controls the fabric softener supply unit 150 to supply the fabric softener to the drum 125 before a final rinsing cycle is completed. At this time, the controller 160 operates the second compressor 155b for a predetermined duration so that the fabric softener can be supplied in a proper amount to the drum 125 depending on the weight of laundry.
  • the first open/close valve 143a of the supply pipe 143 is closed and the second open/close valve 153a of the connection pipe 153 is open.
  • Fig. 3 is a flowchart of a method for controlling washing machine in accordance with one embodiment of the present invention.
  • the controller 160 calculates quantities of wash water and liquid detergent or fabric softener to be supplied into the drum 125 depending on the weight of laundry in S20.
  • the supply quantity of liquid detergent or fabric softener is calculated based on a level of wash water supplied to the drum 125 by the weight of wash water.
  • the controller 160 determines that the level of the liquid detergent is a predetermined level or less based on the detection result of the liquid detergent by the detector 147 in S41. If the level of the liquid detergent is the predetermined level or less, the controller 160 allows the display unit of the washing machine 100 to display lack of the liquid detergent in S43. If the level of the liquid detergent exceeds the predetermined level, the controller 160 operates the first compressor 145b to supply the liquid detergent to the drum 125 for a predetermined duration in S45.
  • the washing machine 100 When the liquid detergent is supplied to the drum 125 in S45, the washing machine 100 performs a washing cycle and a rinsing cycle according to control of the controller 160 in S50 and S60. While the rinsing cycle proceeds in S60, the controller 160 determines that the current rinsing cycle is a final rinsing cycle in S61. If the current rinsing cycle is the final rinsing cycle, the controller 160 operates the second compressor 155b for a predetermined duration to supply a fabric softener to the drum 125 in S70.
  • the controller 160 controls operation time of the second compressor 155b to control the quantity of fabric softener supplied to the drum 125 depending on the calculation result of the supply quantity of fabric softener (S20). At this time, the controller 160 opens the second open/close valve 153a and closes the first open/close valve 143a.
  • Fig. 4 is a side view of a washing machine in accordance with another embodiment of the invention and Fig. 5 is an enlarged view of a liquid detergent assembly of the washing machine in accordance with another embodiment of the invention.
  • the washing machine 100 includes a cabinet 110, a tub 120, a drum 125 disposed inside the tub 120, and a liquid detergent assembly 200 which supplies a liquid detergent and a fabric softener into the drum 125.
  • the liquid detergent assembly 200 includes a liquid detergent container tank 210, a fabric softener container tank 220, a supply pipe 230 which connects the liquid detergent container tank 210 and the fabric softener container tank 220 to the drum 125, and a discharge part 240 which discharges the liquid detergent and the fabric softener from the liquid detergent container tank 210 and the fabric softener container tank 220, respectively.
  • the liquid detergent container tank 210 and the fabric softener container tank 220 are provided therein with detectors 211, 221 which detect quantities of liquid detergent and fabric softener, respectively. Further, each of the liquid detergent container tank 210 and the fabric softener container tank 220 is provided at one side thereof with a pouring port 213 or 223 through which the liquid detergent or the fabric softener can be poured thereto.
  • the supply pipe 230 is bifurcated at one end thereof into two portions, which are respectively connected to the liquid detergent container tank 210 and the fabric softener container tank 220, and is connected at the other end thereof to the drum 125.
  • the liquid detergent and the fabric softener in the liquid detergent container tank 210 and the fabric softener container tank 220 are supplied to the drum 125 through a single supply pipe 230.
  • the supply pipe 230 is provided at the bifurcated portions thereof with first and second open/close valves 231, 233, respectively, to allow the liquid detergent and the fabric softener to be selectively supplied to the drum 125 through the supply pipe 230.
  • the first open/close valve 231 is provided to the portion of the supply pipe 230 connected to the liquid detergent container tank 210
  • the second open/close valve 233 is provided to the portion of the supply pipe 230 connected to the fabric softener container tank 220.
  • the discharge part 240 includes a compressor 241 for generating compressed air, and first and second air-supply tubes 243, 245 through which the compressed air generated by the compressor 241 is supplied to the liquid detergent container tank 210 and the fabric softener container tank 220, respectively. Further, the discharge part 240 further includes third and fourth open/close valves 243a, 245a which are provided to the first and second air-supply tubes 243, 245 to open or close the first and second air-supply tubes 243, 245, respectively.
  • the compressed air generated by the compressor 241 is supplied to the liquid detergent container tank 210 and the fabric softener container tank 220 through the first and second air-supply tubes 243, 245, respectively.
  • the first air-supply tube 243 is connected to the compressor 241 and the liquid detergent container tank 210
  • the second air-supply tube 245 is connected to the compressor 241 and the fabric softener container tank 220.
  • first air-supply tube 243 is opened and closed by the third open/close valve 243a
  • second air-supply tube 245 is opened and closed by the fourth open/close valve 245a.
  • the discharge part 240 In the discharge part 240 with this configuration, when the compressed air generated by the compressor 241 is supplied into the liquid detergent container tank 210, the third open/close valve 243a is open and the fourth open/close valve 245a is closed. On the contrary, when the compressed air generated by the compressor 241 is supplied into the fabric softener container tank 220, the third open/close valve 243a is closed and the fourth open/close valve 245a is open.
  • the discharge part 240 is controlled by the controller 250.
  • the liquid detergent assembly 200 is controlled by the controller 250 to selectively supply the liquid detergent or the fabric softener to the drum 125 depending on the weight of laundry.
  • the liquid detergent when the liquid detergent is supplied to the drum 125, compressed air is generated by the compressor 241 according to control of the controller 250 and the first and third open/close valves 231, 243a are open to allow the compressed air to be supplied to the liquid detergent container tank 210 through the first air-supply tube 243 and discharge the liquid detergent from the liquid detergent container tank 210.
  • the fourth open/close valve 245a is closed to prevent the compressed air from being supplied to the fabric softener container tank 220 through the second air-supply tube 245, and the second open/close valve 233 is closed to prevent the liquid detergent from infiltrating the fabric softener container tank 220 through the supply pipe 230.
  • the fabric softener when the fabric softener is supplied to the drum 125, compressed air is generated by the compressor 241 according to control of the controller 250 and the second and fourth open/close valves 233, 245a are open to allow the compressed air to be supplied to the fabric softener container tank 220 through the second air-supply tube 245 and discharge the fabric softener from the fabric softener container tank 220.
  • the first and third open/close valve 231, 243a are closed to prevent the compressed air from being supplied to the liquid detergent container tank 210 through the first air-supply tube 243 and to prevent the fabric softener from infiltrating the liquid detergent container tank 210 through the supply pipe 230.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP09823802.5A 2008-10-29 2009-10-27 Method for controlling washing machine furnished with liquid detergent dispenser Active EP2354290B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080106602A KR101211590B1 (ko) 2008-10-29 2008-10-29 액체세제 공급장치를 가지는 세탁기의 제어방법
PCT/KR2009/006219 WO2010050722A2 (ko) 2008-10-29 2009-10-27 액체세제 공급장치를 구비하는 세탁기의 제어방법

Publications (3)

Publication Number Publication Date
EP2354290A2 EP2354290A2 (en) 2011-08-10
EP2354290A4 EP2354290A4 (en) 2013-11-20
EP2354290B1 true EP2354290B1 (en) 2020-10-21

Family

ID=42116073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09823802.5A Active EP2354290B1 (en) 2008-10-29 2009-10-27 Method for controlling washing machine furnished with liquid detergent dispenser

Country Status (5)

Country Link
US (1) US20100101030A1 (zh)
EP (1) EP2354290B1 (zh)
KR (1) KR101211590B1 (zh)
CN (1) CN102197173B (zh)
WO (1) WO2010050722A2 (zh)

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Also Published As

Publication number Publication date
CN102197173B (zh) 2012-12-12
KR101211590B1 (ko) 2012-12-12
WO2010050722A2 (ko) 2010-05-06
EP2354290A2 (en) 2011-08-10
CN102197173A (zh) 2011-09-21
KR20100047625A (ko) 2010-05-10
WO2010050722A3 (ko) 2010-08-05
EP2354290A4 (en) 2013-11-20
US20100101030A1 (en) 2010-04-29

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