WO2009066941A2 - Procédé et appareil pour traiter le linge - Google Patents

Procédé et appareil pour traiter le linge Download PDF

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Publication number
WO2009066941A2
WO2009066941A2 PCT/KR2008/006847 KR2008006847W WO2009066941A2 WO 2009066941 A2 WO2009066941 A2 WO 2009066941A2 KR 2008006847 W KR2008006847 W KR 2008006847W WO 2009066941 A2 WO2009066941 A2 WO 2009066941A2
Authority
WO
WIPO (PCT)
Prior art keywords
wash water
detergent
tub
amount
laundry
Prior art date
Application number
PCT/KR2008/006847
Other languages
English (en)
Other versions
WO2009066941A3 (fr
Inventor
Soo Young Oh
Myong Hun Im
Tae Young Park
Kyung Chul Woo
Original Assignee
Lg Electronics Inc.
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
Priority claimed from KR1020070118729A external-priority patent/KR20090052163A/ko
Priority claimed from KR1020070118725A external-priority patent/KR101464298B1/ko
Priority claimed from KR1020070118726A external-priority patent/KR101455802B1/ko
Priority claimed from KR1020070118728A external-priority patent/KR101455803B1/ko
Priority claimed from KR1020070119203A external-priority patent/KR101394510B1/ko
Priority claimed from KR1020080012756A external-priority patent/KR20090087362A/ko
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to US12/743,794 priority Critical patent/US20100281625A1/en
Priority to EP08851339.5A priority patent/EP2220279A4/fr
Publication of WO2009066941A2 publication Critical patent/WO2009066941A2/fr
Publication of WO2009066941A3 publication Critical patent/WO2009066941A3/fr

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
    • 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
    • D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
    • 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
    • D06F2103/18—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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D06F2103/22—Content of detergent 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
    • 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
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2105/08—Draining of washing liquids
    • 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
    • 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
    • D06F2105/60—Audible signals
    • 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
    • D06F34/22—Condition of the washing liquid, e.g. turbidity

Definitions

  • the present invention relates to a laundry treatment method and apparatus, and more particularly, to a laundry treatment method and apparatus which can reduce the amount of detergent remained and can output information regarding the amount of detergent.
  • the duration of a rinsing process may be increased.
  • an increase in the duration of a rinsing process may result in a prolonged washing operation and an increase in the consumption of electricity.
  • the present invention provides a laundry treatment method and apparatus which can reduce the amount of detergent remained and can output information regarding the amount of detergent.
  • a laundry treatment method including (a) measuring the amount of detergent in wash water in a tub during a rinsing operation; and (b) automatically determining whether to continue performing the rinsing operation based on a plurality of operating variables including the amount of detergent in the wash water.
  • a laundry treatment apparatus including a tub in which wash water for washing laundry is loaded; a wash water sensing apparatus which measures the amount of detergent remained in the wash water; and an alarm device which outputs information regarding the amount of detergent remained in the wash water.
  • the present invention it is possible to reduce the amount of detergent remained in laundry and thus to reduce the number of times a rinsing process needs to be performed. [13] According to the present invention, it is possible for a user to easily determine whether too much detergent has been supplied or how a rinsing operation progresses based on information regarding the amount of detergent. [14] According to the present invention, it is possible to provide an electrode sensor, which has a simple structure and is thus easy to assemble. [15]
  • FIG. 1 illustrates an exploded perspective view of a laundry treatment apparatus according to an exemplary embodiment of the present invention
  • FIG. 2 illustrates a cross-sectional view of the laundry treatment apparatus shown in
  • FIG. 1 A first figure.
  • FIG. 3 illustrates a block diagram of the laundry treatment machine shown in FIG. 1;
  • FIG. 4 illustrates a flowchart of a laundry treatment method according to an exemplary embodiment of the present invention
  • FIG. 5 illustrates a block diagram for explaining control logic for performing an additional rinsing process shown in FIG. 4;
  • FIG. 6 illustrates a diagram of an example of a display unit shown in FIG. 3;
  • FIG. 7 illustrates a diagram of another example of the display unit shown in FIG. 3;
  • FIG. 8 illustrates a diagram of another example of the display unit shown in FIG. 3;
  • FIG. 9 illustrates a diagram of another example of the display unit shown in FIG. 3;
  • FIG. 10 illustrates a cross-sectional view showing how an electrode sensor according to an exemplary embodiment of the present invention is coupled to a tub shown in FIG.
  • FIG. 11 illustrates an exploded lateral view of the electrode sensor shown in FIG. 10;
  • FIG. 12 illustrates a lateral view of the electrode sensor shown in FIG. 10;
  • FIG. 13 illustrates a perspective view of the electrode sensor shown in FIG. 10;
  • FIG. 14 illustrates an exploded perspective view of the electrode sensor shown in
  • FIG. 19; [36] FIG. 21 illustrates a perspective view of an electrode sensor according to another exemplary embodiment of the present invention.
  • FIG. 22 illustrates a perspective view of an electrode sensor according to another exemplary embodiment of the present invention.
  • FIG. 23 illustrates a plan view of a sensor body shown in FIG. 22, as seen from direction A of FIG. 22;
  • FIG. 24 illustrates a plan view of a sensor body of an electrode sensor according to another exemplary embodiment of the present invention;
  • FIG. 25 illustrates a perspective view of a wash water sensing apparatus according to an exemplary embodiment of the present invention;
  • FIG. 26 illustrates a plan view of the wash water sensing apparatus shown in FIG. 25, as seen from direction A of FIG. 25;
  • FIG. 27 illustrates a perspective view of a wash water sensing apparatus according to another exemplary embodiment of the present invention; and
  • FIG. 28 illustrates a perspective view of a wash water sensing apparatus according to another exemplary embodiment of the present invention.
  • FIG. 1 illustrates an exploded perspective view of a laundry treatment apparatus according to an exemplary embodiment of the present invention, i.e., a drum-type washing machine 100
  • FIG. 2 illustrates a cross-sectional view of the drum-type washing machine 100.
  • the drum- type washing machine 100 may include a cabinet 110 defining the interior of the drum- type washing machine 100.
  • a laundry inlet/outlet hole 112 may be formed at the front of the cabinet 110, and thus, laundry may be injected into or ejected from a drum 125 through the laundry inlet/outlet hole 112.
  • a door assembly 130 may be disposed at the front of the cabinet 110 so as to be able to open or close the laundry inlet/outlet hole 112.
  • the drum- type washing machine 100 may also include a tub 120 which is disposed in the cabinet 110 so as to be buffered by a spring and a damper and can be loaded with wash water; the drum 125 which is disposed in the tub 120 so as to be rotatable and can be loaded with laundry; and a driving device 145 which is disposed at the rear of the tub 120 and applies rotation force to the drum 125.
  • a plurality of through holes 127 may be formed on the drum 125 so that wash water can pass through the through holes 127.
  • a lifter 129 may be disposed on an inner side surface of the drum 125 and may lift and then drop laundry with the use of gravitational force during the rotation of the drum 125.
  • the drum- type washing machine 100 may also include a control panel 117 which is disposed at an upper part of the cabinet 110, displays various information regarding the operation of the drum- type washing machine 100, and controls the operation of the drum-type washing machine 100; a drain device 170 which is disposed at the bottom of the tub 120 and discharges wash water from the tub 120; and a water supply device 140 which is disposed at the top of the tub 120 and supplies water into the tub 120.
  • the water supply device 140 may include a water supply bellows 141, a water supply hose 142 and a water supply valve 143.
  • a detergent supply device 149 may be disposed on a water supply path of the water supply device 140 and may supply detergent with the use of wash water supplied into the tub 120.
  • the drain device 170 may include a drain bellows 171, a drain pump 172 and a drain hose 173.
  • the drum- type washing machine 100 may also include a gasket 115 disposed between the opening of the drum 125 and the laundry inlet/outlet hole 112 of the cabinet 110.
  • the gasket 115 may alleviate shock to the door assembly 130 during the rotation of the drum 125 and may prevent a water leak from the tub 120.
  • the drum-type washing machine 100 may also include an electrode sensor 150 which measures the conductivity of wash water in the tub 120.
  • the term 'wash water' as used herein, may indicate not only water alone but also the mixture of water and detergent.
  • the term 'detergent', as used herein, may indicate not only a solid detergent but also a liquid detergent.
  • the electrode sensor 150 may measure the conductivity of wash water and may thus determine the amount of detergent remained in the wash water.
  • a wash water sensing apparatus measuring the hardness or turbidity of wash water may be provided in the drum- type washing machine 100, instead of the electrode sensor 150. That is, the electrode sensor 150 is an example of such wash water sensing apparatus.
  • the electrode sensor 150 may be attached to the rear of a lower part of the tub 120.
  • the electrode sensor 150 may be coupled to the rear of the tub 120 through a hole 5a formed on a rear surface 5 of the tub 120, but the present invention is not restricted to this. That is, the electrode sensor 150 may be disposed at various locations, other than that set forth herein.
  • FIG. 3 illustrates a block diagram of the drum-type washing machine 100.
  • a control unit 160 may receive various information from a weight sensing unit 183, the electrode sensor 150 and an input unit 184 and may control the operations of the water supply device 140, the driving device 145, and an alarm device 180.
  • the control unit 160 may also control the operations of, for example, the driving device 145, the water supply device 140 and the drain device 170.
  • the weight sensing unit 183 may sense the weight of laundry loaded in the drum
  • the input unit 184 may receive a user manipulation signal from a user.
  • the input unit 184 may be included in the control panel 117. Examples of the user manipulation signal include a signal for turning on or off the drum- type washing machine 100, a signal for choosing a washing course, a signal for performing an additional rinsing process, and a signal for performing an additional spin-drying operation.
  • An alarm device 180 may include the audio output unit 181 and the display unit 182.
  • the audio output unit 181 may output audio data regarding the amount of detergent.
  • the display unit 182 may output video data regarding the amount of detergent.
  • the drum- type washing machine 100 may also include a memory unit 170 in which various audio data and display information is stored.
  • the control unit 160 may control the alarm device 180 to notify the user of the amount of detergent either auditorily or visually using the information present in the memory unit 170.
  • the audio output unit 181 may output information regarding the amount of detergent as an audio message.
  • the audio output unit 181 may be implemented as a speaker.
  • the display unit 182 may output text data or graphic data regarding the amount of detergent.
  • the display unit 182 may account for part of the control panel 117 for setting a washing course.
  • the display unit 182 may be implemented as a liquid crystal display (LCD) or a light-emitting diode (LED) and may be disposed on one side of the control panel 117.
  • the display unit 182 may display not only information regarding the amount of detergent but also various other information indicating how a washing operation progresses such as information indicating the beginning and/or the end of a washing operation.
  • FIG. 4 illustrates a flowchart of a laundry treatment method according to an exemplary embodiment of the present invention.
  • the laundry treatment method may largely include performing a preparation operation (Sl 10), performing a washing operation (S 120), performing a rinsing operation (S 130) and performing a spin-drying operation (S 180). More specifically, operation SI lO may involve loading laundry in the drum 125 (Si l l) and measuring the weight of the laundry (Sl 12). In operation S 120, wash water may be supplied to the laundry, and the laundry may be washed with the wash water while rotating the drum 125. Once operation S120 is complete, the laundry may be rinsed (S130).
  • the electrode sensor 150 may measure the conductivity of wash water and may output the result of the measurement to the control unit 160.
  • the control unit 160 may determine the amount of detergent in wash water based on data present in the memory unit 170 and measurement data provided by the electrode sensor 150 regarding the conductivity of wash water.
  • the control unit 160 may also determine whether too little detergent has been supplied into the tub 120 by comparing the determined detergent amount with a standard detergent amount stored in the memory unit 170.
  • the drum- type washing machine 100 may provide the user with video data regarding the amount of detergent supplied into the tub 120. More specifically, the display unit 182 may display a text message, "Too much detergent has been input,” “An appropriate amount of detergent has been input,” or "Too little detergent has been input.”
  • the display unit 182 may display graphic data such as geometrical figures, images, or colors, instead of a text message, in order to provide information regarding the amount of detergent supplied into the tub 120.
  • the display unit 182 will be described later in further detail with reference to FIG. 6.
  • control unit 160 may control the audio output unit 181 to output information regarding the amount of detergent supplied into the tub 120 using audio data present in the memory unit 170.
  • the audio output unit 181 may output a voice message, "Too much detergent has been input,” “An appropriate amount of detergent has been input,” or "Too little detergent has been input.”
  • the user may easily recognize whether too much or too little detergent has been supplied into the tub 120 based on the voice message and may thus be able to supply an appropriate amount of detergent into the tub 120.
  • Operation S 130 will hereinafter be described in further detail.
  • a rinsing/spin-drying operation may be performed while rotating the drum 125
  • wash water may be supplied into the tub 120 (S 141), and the laundry may be rinsed with the wash water while rotating the drum 125(S 142).
  • the rinsing process may be performed by supplying wash water into the tub 120 while rotating the drum 125.
  • the electrode sensor 150 may measure the conductivity of the wash water in the tub
  • control unit 160 may determine the amount of detergent remained by comparing measurement data provided by the electrode sensor regarding the conductivity of the wash water in the tub 120 with data present in the memory unit 170 (S 145). Thereafter, the control unit 160 may determine whether a user manipulation signal related to a rinsing operation has been received from the user. Thereafter, the control unit 160 may determine whether an additional rinsing process needs to be performed (S 150). Alternatively, the control unit 160 may determine whether an additional rinsing process needs to be performed during the rinsing process performed in operation S 140.
  • the control unit 160 may output information regarding the amount of detergent remained with the use of the display unit 182 or the audio output unit 181, and this will be described later in further detail with reference to FIG. 6.
  • control unit 160 may determine a set of operating conditions for performing an additional rinsing process (S 155).
  • the operating conditions for performing an additional rinsing process may include the water level in the tub 120, the rotation speed of the drum 125, which is the measure of spin-drying speed, and the duration of a spin-drying process.
  • FIG. 5 illustrates a block diagram for explaining control logic for performing an additional rinsing process.
  • the control unit 160 may use a variety of logic to determine the necessity of an additional rinsing process (S 165 of FIG. 4) and the operating conditions for performing an additional rinsing process.
  • the control unit 160 may use fuzzy logic.
  • the weight of laundry and a user manipulation signal may be condition variables
  • the water level in the tub 120, the rotation speed of the drum 125 and the duration of a spin-drying process may be conclusion variables.
  • the control unit 160 may determine the conclusion variables using a membership function between the condition variables and the conclusion variables.
  • the fuzzy logic may also use various operating variables, other than those set forth herein, as condition variables.
  • operating variables associated with the amount of detergent remained in laundry may be used as condition variables. That is, the conductivity of wash water measured by the electrode sensor 150 and the weight of laundry are important factors for determining the amount of detergent remained in laundry, and a user manipulation signal is also an important factor because it indicates whether to perform an additional rinsing process or whether to terminate a rinsing operation.
  • the weight of laundry and a user manipulation signal are used as condition variables, it is possible to simplify fuzzy control and thus to facilitate the use of a membership function.
  • the operating conditions for performing an additional rinsing process may be determined (S 155). Thereafter, a rinsing/spin-drying operation may be performed (S 160).
  • the control unit 160 may provide the user with information regarding an additional rinsing process to be performed in operation S 165 with the use of the display unit 182 or the audio output unit 181.
  • an additional rinsing process may be performed (S 165). More specifically, wash water may be supplied into the tub 120 (S 167), and the laundry loaded in the drum 125 may be rinsed with the wash water while rotating the drum 125 (S 168). Alternatively, the laundry in the drum 125 may be rinsed by supplying wash water into the tub 120 while rotating the drum 125.
  • the additional rinsing process performed in operation S 165 is complete, the total number of times a rinsing process has been performed may be counted (S 170). If the total number of times a rinsing process has been performed is less than a predefined reference value (S 175), the laundry treatment method returns to operation S 150.
  • control unit 160 may control a total number of times a rinsing process is performed not to exceed the predefined reference value.
  • FIG. 6 illustrates a schematic diagram of an example of the display unit 182.
  • the display unit 182 may include a plurality of first segments 182a which are selectively turned on or off according to the amount of detergent supplied and represent different colors and a second segment 182b whose color changes according to the amount of detergent supplied. More specifically, one of the first segments 182a may be turned on according to the amount of detergent supplied, and the color of the second segment 182b may be determined by the amount of detergent supplied. If the color of the second segment 182b is the same as the color of whichever of the first segments 182a is turned on according to the amount of detergent supplied, the user may be able to easily recognize the amount of detergent supplied.
  • the display unit 182 may also include a third segment 182c displaying information regarding the amount of detergent remained. If a reference remaining detergent amount is " 100%", the third segment 182c may display the information regarding the amount of detergent remained as, for example, "99%” or "98%”. If there is no detergent remained, the third segment 182c may display the information regarding the amount of detergent remained as "0%”. Therefore, the user may easily determine how well laundry in the drum 125 has been rinsed out based on the information regarding the amount of detergent remained. Thus, it is possible to improve user satisfaction.
  • the information regarding the amount of detergent remained may be displayed using the first segments 182a, instead of using the third segment 182c. That is, the first segment 182a labeled as "Too much detergent” may be turned on at the beginning of a rinsing operation. Thereafter, the first segments 182a except the first segment 182a labeled as "Too much detergent” and the first segment 182a labeled as "Too little detergent” may be sequentially turned on in accordance as the amount of detergent remained decreases. If the amount of detergent remained is less than a predefined level, the first segment 182a labeled as "Too little detergent" may be turned on.
  • FIG. 7 illustrates a schematic diagram of another example of the display unit 182, i.e., a display unit 282.
  • the display unit 282 may include a plurality of first segments 282a arranged side by side in a horizontal direction. One of the first segments 282a may be turned on according to the amount of detergent.
  • FIG. 8 illustrates a schematic diagram of another example of the display unit 182, i.e., a display unit 382.
  • the display unit 382 may display information regarding the amount of detergent remained using a progress bar. When a rinsing operation begins, the progress bar may be increasingly filled up according to the amount of detergent remained. If the amount of detergent remained is reduced to a predefined value or below, the progress bar may be completely filled up.
  • the display unit 382 may be implemented as an LCD.
  • FIG. 9 illustrates a schematic diagram of another example of the display unit 182, i.e., a display unit 482. Referring to FIG. 9(a), the display unit 483 may display a progress bar having a certain shape, other than a bar shape. The progress bar may be increasingly filled up according to the amount of detergent remained.
  • the display unit 482 may display, for example, a spinning hourglass, in order to indicate whether the determination of the amount of detergent remained in wash water based on the conductivity of wash water measured by the electrode sensor 150 (S 145) is under way.
  • the alarm device 180 is illustrated in FIG. 3 as including both the audio output unit
  • the alarm device 180 may include only one of the audio output unit 181 and the display unit 182. Even if the alarm device 180 includes both the audio output unit 181 and the display unit 182, the control unit 160 may control the audio output unit 181 and the display unit 182 not to operate at the same time, i.e., the control unit 160 may control only one of the audio output unit 181 and the display unit 182 to operate at a time.
  • FIG. 10 illustrates a cross-sectional view showing how an electrode sensor 150 according to a first exemplary embodiment of the present invention is coupled to the tub 120 shown in FIG. 1,
  • FIG. 11 illustrates an exploded lateral view of the electrode sensor 150 shown in FIG. 10
  • FIG. 12 illustrates a lateral view of the electrode sensor 150 shown in FIG. 10
  • FIG. 13 illustrates a perspective view of the electrode sensor 150 shown in FIG. 10
  • FIG. 14 illustrates an exploded perspective view of the electrode sensor 150 shown in FIG. 10
  • FIG. 15 illustrates a lateral view of the electrode sensor 150, as seen from direction A of FIG. 12.
  • the electrode sensor 150 may include a sealing cover 60 and a sensor body 70.
  • the sealing cover 60 may be coupled to the tub 120 by being inserted into the hole 5a.
  • the sensor body 70 may include a plurality of electrodes 72 and may be coupled to the sealing cover by being inserted into a through hole 61 formed through the sealing cover 60.
  • the sealing cover 60 may be coupled to the tub 120 by pressing the sensor body 70 into the tub 120.
  • the sealing cover 60 may be more elastic than the sensor body 70.
  • the sealing cover 60 may be formed of rubber.
  • the sealing cover 60 may include a cover insertion portion 62 which can be inserted into the hole 5a.
  • the cover insertion portion 62 when the cover insertion portion 62 is yet to be inserted into the hole 5a, the cover insertion portion 62 may have an outer diameter d2, which is greater than a diameter dl of the hole 5a.
  • the outer diameter d2 may be about 5 mm greater than the diameter dl.
  • the cover insertion portion 62 when the cover insertion portion 62 is inserted in the hole 5a, the cover insertion portion 62 may be pressed by the inner circumferential surface of the hole 5a, and thus, the outer diameter of the cover insertion portion 62 may be reduced to an outer diameter d2' which is the same diameter as the diameter dl.
  • the sealing cover 60 may also include first and second ribs 63 and 64.
  • the first and second ribs 63 and 64 may protrude beyond the outer circumferential surface of the cover insertion portion 62.
  • the first and second ribs 63 and 64 may be disposed at the front and the rear, respectively, of the hole 5a on a rear surface 5 of the tub 120 and may thus firmly fix the sealing cover 60 in the hole 5a.
  • the first and second ribs 63 and 64 may protrude radially from the cover insertion portion 62.
  • the first and second ribs 63 and 64 may be a predetermined distance apart from each other. Due to the first and second ribs 63 and 64, the cover insertion portion 62 of the sealing cover 60 may be fit in the hole 5a when the sealing cover 60 is inserted in the hole 5a.
  • a surface 64a of the second rib 64 may be placed in contact with the rear surface 5 of the tub 120 when the sealing cover 60 is inserted into the hole 5a.
  • the surface 64a of the second rib 64 may be recessed toward the centre of the through hole 61.
  • a hem portion 65 of the sealing cover 60 may be tapered so that the sealing cover 60 can be easily inserted into the hole 5a.
  • the sealing cover 60 may also include a cover cylinder portion 66 which extend backwards from the second rib 64 and a number of hook portions 67 which protrude from the cover cylinder portion 66 so as to be able to be coupled to the sensor body 70. At least one hook portion 67 may be formed on the cover cylinder portion 66. Referring to FIGS. 14 and 15, two hook portions 67 may be formed on opposite sides of the cover cylinder portion 66.
  • the sensor body 70 may be formed through injection molding, and the electrodes 72 may be inserted into the sensor body 70 during the formation of the sensor body 70.
  • the electrodes 72 may be inserted into the sensor body 70 so that the ends of the two electrodes 72 can be exposed.
  • the sensor body 70 may include a body insertion portion 73 which can be inserted into the through hole 61 and a body cylinder portion 74 which extends backwards from the body insertion portion 73.
  • the body insertion portion 73 when the body insertion portion 73 is yet to be inserted into the through hole 61, the body insertion portion 73 may have an outer diameter d4 which is greater than a diameter d3 of the through hole 61.
  • the outer diameter d4 may be about 2 mm greater than the diameter d3.
  • the inner circumferential surface of the through hole 61 when the body insertion portion 73 is inserted into the through hole 61, the inner circumferential surface of the through hole 61 may be pressed by the body insertion portion 73, and thus, the diameter of the through hole 61 may be reduced to a diameter d3' which is the same as the outer diameter d4.
  • the sensor body 70 may also include an engaging protrusion 75 which engages with the hook portion 67 when the body insertion portion 73 is inserted into the through hole 61.
  • the engaging protrusion 75 may protrude radially from a portion of the body insertion portion 74 corresponding to the hook portions 67.
  • the body cylinder portion 74 may include a plurality of recessed portions 74a into which the hook portions 67 can be inserted.
  • the sealing cover 60 may be pressed into the hole 5a of the tub 120. Since the sealing cover 60 is formed of rubber and the outer diameter of the cover insertion portion 61 is greater than the diameter of the insertion hole 5 a when the cover insertion portion 61 is yet to be inserted into the hole 5 a, the cover insertion portion 61 may be pressed by and thus firmly attached onto the inner circumferential surface of the hole 5a when the sealing cover 60 is inserted into the hole 5a.
  • the sensor body 70 may be inserted into the through hole 61 of the sealing cover 60. Since the outer diameter of the body insertion portion 73 is greater than the diameter of the through hole 61 when the sensor body 70 is yet to be inserted into the through hole 61, the body insertion portion 73 may be pressed by and thus firmly attached onto the inner circumferential surface of the through hole 61 when the sensor body 70 is inserted into the through hole 61.
  • the electrode sensor 150 measures the conductivity of the wash water in the tub 120.
  • the electrodes 72 of the electrode sensor 150 may be electrically connected, and thus, the electrode sensor 150 may thus be able to measure the conductivity of the wash water in the tub 120.
  • FIG. 16 illustrates a perspective view of an electrode sensor 80 according to a second exemplary embodiment of the present invention.
  • the electrode sensor 80 may include a sealing cover 84, which is coupled to the tub 120 by being inserted into the hole 5a of the tub 120, and a sensor body 86, which is coupled to the sealing cover 84 by being inserted into a through hole of the sealing cover 84 and includes first through third electrode sensors 81 through 83.
  • the second exemplary embodiment is almost the same as the first exemplary embodiment except that the electrode sensor 80 includes at least three electrodes and that at least one of the three electrodes has a different length from the other electrodes.
  • the second exemplary embodiment will hereinafter be described, focusing mainly on differences with the first exemplary embodiment.
  • the first and second electrodes 81 and 82 may have the same length, and the third electrode 83 may be shorter than the first and second electrodes 81 and 82.
  • FIG. 17 illustrates a graph showing the relationship between the concentration of detergent and the voltage of the electrode sensor 80.
  • the concentration of detergent may serve as a resistor. That is, the higher the concentration of detergent, the lower the voltage of each of the first through third electrodes 81, 82 and 83 becomes.
  • the more the voltage of an electrode varies according to the concentration of detergent i.e., the greater the slope of a voltage-detergent concentration curve of an electrode), the better the electrode is able to precisely determine the amount of detergent.
  • any two of the first through third electrodes 81 through 83 producing a greatest voltage variation for a given detergent concentration variation may be selectively used.
  • the amount by which the voltage of each of the first through third electrodes 81 through 83 varies according to the concentration of detergent may differ from a first concentration section Sl to a second concentration section S2.
  • the first concentration section Sl may correspond to a period of time during which there is little, if any, detergent detected, i.e., a period of time during which a rinsing operation is performed.
  • the second concentration section S2 may correspond to a period of time during which a wash operation is performed alone or together with a rinsing operation.
  • the first and second electrodes 81 and 82 may produce a greatest voltage variation for any given detergent concentration variation. More specifically, there is little, if any, detergent detected during the first concentration section Sl.
  • the contact area between each of the first and second electrodes 81 and 82 and wash water is larger than the contact area between the third electrode 83 and the wash water.
  • the first and second electrodes 81 and 82 may be selectively used to detect the amount of detergent.
  • the third electrode 83 and one of the first and second electrodes 81 and 82 may produce first a greatest voltage variation for any given detergent concentration variation. More specifically, the amount of detergent is greater during the second concentration section S2 than during the first concentration section Sl. Thus, during the second concentration section Sl, the third electrode 83 and one of the first and second electrodes 81 and 82 (particularly, the first electrode 81) may be selectively used to detect the amount of detergent.
  • a current may be applied to the first and second electrodes 81 and 82, and thus, the amount of detergent may be determined based on voltage measurements obtained from the first and second electrodes 81 and 82.
  • a current may be applied to the first and third electrodes 81 and 83, and thus, the amount of detergent may be determined based on voltage measurements obtained from the first and third electrodes 81 and 83. In this manner, it is possible to precisely determine the amount of detergent by selectively using the first through third electrodes 81 through 83 according to the concentration of detergent.
  • FIG. 18 illustrates a perspective view of an electrode sensor 90 according to another exemplary embodiment of the present invention.
  • the third exemplary embodiment is almost the same as the second exemplary embodiment except that the electrode sensor 90 includes three electrodes having different lengths.
  • the third exemplary embodiment will hereinafter be described, focusing mainly on differences with the second exemplary embodiment.
  • the electrode sensor 90 may include fourth through sixth electrodes 91 through 93.
  • the fourth electrode 91 may be shorter than the fifth electrode 92, and the fifth electrode 92 may be shorter than the sixth electrode 93.
  • the fourth through sixth electrodes 91 through 93 may be sequentially arranged in order of length.
  • the electrode sensor 90 may be able to precisely measure the amount of detergent by selectively using the fourth through sixth electrodes 91 through 93. In addition, the electrode sensor 90 may be able to prevent foreign materials from being stuck between the fourth through sixth electrodes 91 through 93.
  • FIG. 19 illustrates a perspective view of an electrode sensor 1100 according to a fourth exemplary embodiment of the present invention
  • FIG. 20 illustrates an exploded perspective view of the electrode sensor 1100
  • the electrode sensor 1100 may include a sealing cover 1103 coupled to the tub 120 and a sensor body 1104 coupled to the sealing cover 1103 and including a plurality of electrodes 1102. At least one of the contact surfaces of wash water in the tub 120 and each of the electrodes 1102 may be disposed on a level with a surface of the sensor body 1104.
  • the electrodes 1102 may be inserted into a body insertion portion 1105 of the sensor body 1104, and at least one surface of each of the electrodes 1102 may be exposed on a front surface 1105 a of the body insertion portion 1105, facing the tub 120.
  • Each of the electrodes 1102 may include a first portion 1102a inserted into the body insertion portion 1105 and a second portion 1102b exposed on the front surface 1105 of the body insertion portion 1105 and contacting wash water in the tub 120.
  • the area of the second portions 1102b of the electrodes 1102 may be determined by the thickness of the electrodes 1102. The area of the second portions of the electrodes 1102 may be appropriately adjusted in order to control the performance of the electrode sensor 1100.
  • the electrode sensor 1100 measures the conductivity of the wash water in the tub 120.
  • the voltage of the electrodes 1102 may vary according to the concentration of detergent in the wash water in the tub 120.
  • the electrode sensor 1100 may determine the amount of detergent by measuring the voltage of the electrodes 1102.
  • the electrodes 1102 do not protrude beyond the sensor body 1104, it is possible to prevent foreign materials from being stuck between the electrodes 1102. Therefore, it is possible to prevent deterioration the performance of the electrode sensor 1100 and thus to increase the lifetime of the electrode sensor 1100.
  • FIG. 21 illustrates a perspective view of an electrode sensor 1110 according to a fifth exemplary embodiment of the present invention.
  • the fifth exemplary embodiment is almost the same as the fourth exemplary embodiment except that an electrode 1112 is attached onto the surface of a sensor body 1114.
  • the fifth exemplary embodiment will hereinafter be described, focusing mainly on differences with the fourth exemplary embodiment.
  • the electrode 1112 may be attached onto an outer circumferential surface 1115a of a body insertion portion 1115 of the sensor body 1114.
  • the electrode 1112 may be formed as a plate, but the present invention is not restricted to this. That is, the electrode 1112 may be formed as a stick.
  • the electrode 1112 may be bonded onto the outer circumferential surface 1115a of the body insertion portion 1115 by an adhesive.
  • a groove (not shown) for accommodating the electrode 1112 may be formed on the outer circumferential surface 1115a.
  • FIG. 22 illustrates a perspective view of an electrode sensor 1120 according to a sixth exemplary embodiment of the present invention
  • FIG. 23 illustrates a plan view of a sensor body 1121 of the electrode sensor 1120, as seen from direction A of FIG. 22.
  • the sixth exemplary embodiment is almost the same as the fourth exemplary embodiment except that a body insertion portion 1130 of a sensor body 1121 includes first and second protrusions 1131 and 1132, and that first and second electrodes 1141 and 1142 are disposed on the first and second protrusions 1131 and 1132, respectively.
  • the sixth exemplary embodiment will hereinafter be described, focusing mainly on differences with the fourth exemplary embodiment.
  • the first and second protrusions 1131 and 1132 may protrude toward the tub 120.
  • the first and second protrusions 1131 and 1132 may face each other.
  • a surface 1131a of the first protrusion 1131 on which the first electrode 1141 is disposed and a surface 1131a of the second protrusion 1132 on which the second electrode 1142 is disposed may face each other.
  • the first and second electrodes 1141 and 1142 may face each other.
  • the first and second electrodes 1131 and 1132 may be attached onto or inserted into the first and second protrusions 1131 and 1132, respectively.
  • the first and second electrodes 1141 and 1142 may be exposed on the surfaces 1131a of the first and second protrusions 1131 and 1132 and on top surfaces 1131b and 1132b of the first and second protrusions 1131 and 1132 and may thus be able to contact wash water.
  • FIG. 24 illustrates a plan view of a sensor body of an electrode sensor according to a seventh exemplary embodiment of the present invention.
  • the seventh exemplary embodiment is almost the same as the sixth exemplary embodiment except that first and second electrodes 1151 and 1152 are disposed on opposite sides of a sensor body.
  • first and second electrodes 1151 and 1152 are disposed on opposite sides of a sensor body.
  • the seventh exemplary embodiment will hereinafter be described, focusing mainly on differences with the sixth exemplary embodiment.
  • the first electrode 1151 may be disposed on a surface 1131c of a first protrusion 1131
  • the second electrode 1152 may be disposed on a surface 1132c of a second protrusion 1132.
  • the surfaces 1131c and 1132c may be on opposite sides of the sensor body.
  • FIG. 25 illustrates a perspective view of a wash water sensing apparatus 1200 according to an eighth exemplary embodiment of the present invention
  • FIG. 26 illustrates a plan view of the wash water sensing apparatus 1200, as seen from direction A of FIG. 25.
  • the wash water sensing apparatus 1200 may include a sealing cover 1201 which is coupled to the tub 120 by being inserted into the hole 5a of the tub 120; a sensor body 1202 which is coupled to the sealing cover 1201 by being inserted into a through hole of the sealing cover 1201; an optical sensor 1210 which is disposed on one side of the sensor body 1202 and measures the pollution level of wash water; and an electrode sensor 1220 which is disposed on the other side of the sensor body 1202 and measures the conductivity of wash water.
  • the sealing cover 1201 may be pressed into the tub 120, and the sensor body 1202 may be pressed into the sealing cover 1201.
  • the sealing cover 1201 may be more elastic than the tub 120 or the sensor body 1202.
  • the sealing cover 1201 may be formed of rubber.
  • the sensor body 1202 may include a body insertion portion 1203 which is formed as a protrusion and can thus be inserted into the sealing cover 1201 and a body connector portion 1204 which extends backwards from the body insertion portion 1203 and to which wires connected to the optical sensor 1220 and the electrode sensor 1210 are coupled.
  • the body insertion portion 1203 may be cylindrical.
  • the body insertion portion 1203 may include first and second protrusions 1205 and 1206 which protrude toward the tub 120.
  • the first and second protrusions 1205 and 1206 may face each other.
  • the optical sensor 1210 may include a light emitter 1211 disposed on the first protrusion 1205 and emitting light and a light receptor 1212 disposed on the second protrusion 1206 and receiving the light emitted by the light emitter 1211.
  • a surface of the first protrusion 1205 on which the light emitter 1211 is disposed and a surface of the second protrusion 1206 on which the light receptor 1212 is disposed may face each other.
  • the electrode sensor 1220 may include first and second electrodes 1221 and 1222.
  • the first and second electrodes 1221 and 1222 may be disposed between the first and second protrusions 1205 and 1206.
  • the sensor body 1202 may be formed through injection molding, and the first and second electrodes 1221 and 1222 may be inserted into the sensor body 1202 during the formation of the sensor body 1202.
  • the first and second electrodes 1221 and 1222 may be a predetermined distance apart from each other.
  • Laundry may be loaded into the drum 125, and wash water mixed with detergent may be supplied into the tub 120.
  • the wash water in the tub 120 may be polluted by dust and dirt from the laundry.
  • the wash water sensing apparatus 1200 may measure the quality of the wash water in the tub 120.
  • the wash water sensing apparatus 1200 may determine the pollution level of the wash water in the tub 120 based on the amount of light received by the light receptor 1212. Thus, the wash water sensing apparatus 1200 may determine for how long a washing operation is to be performed and how much detergent is to be used in the washing operation based on the pollution level of the wash water in the tub 120.
  • the wash water sensing apparatus 1200 may determine the amount of detergent in the wash water in the tub 120 based on the voltage of the first and second electrodes 1221 and 1222.
  • the duration of a washing process or the temperature of the wash water in the tub 120 may be reduced. In the latter case, it is possible to reduce the heating energy of a heater and thus to reduce the time and cost required for performing a washing operation.
  • the duration of a washing process or the temperature of the wash water in the tub 120 may be increased.
  • FIG. 27 illustrates a perspective view of a wash water sensing apparatus 1230 according to a ninth exemplary embodiment of the present invention.
  • the ninth exemplary embodiment is almost the same as the eighth exemplary embodiment except that first and second electrodes 1231 and 1232 of an electrode sensor 1230 are disposed on a level with a surface 1202a of a sensor body 1202.
  • the ninth exemplary embodiment will hereinafter be described, focusing mainly on differences with the eighth exemplary embodiment.
  • the electrode sensor 1230 may include the first and second electrodes 1231 and 1232.
  • the first and second electrodes 1231 and 1232 may be disposed between first and second protrusions 1205 and 1206.
  • the first and second electrodes 1231 and 1232 may be inserted in the sensor body 1202 so that at least one surface of each of the first and second electrodes 1231 and 1232 can be exposed on the surface 1202a of the sensor body 1202.
  • the contact area between wash water and each of the first and second electrodes 1231 and 1232 may be determined by the thickness of the first and second electrodes 1231 and 1232.
  • the thickness of the first and second electrodes 1231 and 1232 may be appropriately adjusted in order to control the performance of the electrode sensor 1230.
  • first and second electrodes 1231 and 1232 do not protrude beyond the sensor body 1202, it is possible to prevent foreign materials from being stuck between the electrodes 1231 and 1232. Therefore, it is possible to prevent deterioration the performance of the electrode sensor 1230 and the performance of an optical sensor 1210.
  • FIG. 28 illustrates a perspective view of a wash water sensing apparatus 1240 according to a tenth exemplary embodiment of the present invention.
  • the tenth exemplary embodiment is almost the same as the eighth exemplary embodiment except that first and second electrodes 1241 and 1242 of an electrode sensor 1240 are attached onto a sensor body 1202.
  • first and second electrodes 1241 and 1242 of an electrode sensor 1240 are attached onto a sensor body 1202.
  • the tenth exemplary embodiment will hereinafter be described, focusing mainly on differences with the eighth exemplary embodiment.
  • the first and second electrodes 1241 and 1242 may be attached onto first and second protrusions 1205 and 1206, respectively. More specifically, the first and second electrodes 1241 and 1242 may be disposed on opposite sides of the sensor body 1202. The first and second electrodes 1241 and 1242 may be formed as plates. A pair of grooves for accommodating the first and second electrodes 1241 and 1242 may be respectively formed on the first and second protrusions 1205 and 1206.

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

Abstract

L'invention porte sur un procédé et sur un appareil de traitement de linge. Le procédé de traitement de linge consiste à (a) mesurer la quantité de détergent dans l'eau de lavage dans un bac pendant une opération de rinçage ; et (b) détermination automatiquement s'il faut continuer ou non la réalisation de l'opération de rinçage sur la base d'une pluralité de variables de fonctionnement, incluant la quantité de détergent dans l'eau de lavage.
PCT/KR2008/006847 2007-11-20 2008-11-20 Procédé et appareil pour traiter le linge WO2009066941A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/743,794 US20100281625A1 (en) 2007-11-20 2008-11-20 Method And Apparatus For Treating Laundry
EP08851339.5A EP2220279A4 (fr) 2007-11-20 2008-11-20 Procédé et appareil pour traiter le linge

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
KR1020070118729A KR20090052163A (ko) 2007-11-20 2007-11-20 세탁물 처리장치
KR10-2007-0118729 2007-11-20
KR10-2007-0118725 2007-11-20
KR1020070118725A KR101464298B1 (ko) 2007-11-20 2007-11-20 세탁물 처리기기의 전극센서 및 상기 전극센서를 포함하는세탁물 처리기기
KR1020070118726A KR101455802B1 (ko) 2007-11-20 2007-11-20 세탁물 처리기기의 전극센서 및 상기 전극센서를 포함하는세탁물 처리기기
KR10-2007-0118726 2007-11-20
KR10-2007-0118728 2007-11-20
KR1020070118728A KR101455803B1 (ko) 2007-11-20 2007-11-20 세탁물 처리기기의 세탁수 감지장치 및 상기 세탁수감지장치를 포함하는 세탁물 처리기기
KR10-2007-0119203 2007-11-21
KR1020070119203A KR101394510B1 (ko) 2007-11-21 2007-11-21 세탁물 처리기기의 전극센서 및 상기 전극센서를 포함하는세탁물 처리기기
KR1020080012756A KR20090087362A (ko) 2008-02-12 2008-02-12 세탁물 처리장치의 제어방법
KR10-2008-0012756 2008-02-12

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WO2009066941A2 true WO2009066941A2 (fr) 2009-05-28
WO2009066941A3 WO2009066941A3 (fr) 2009-09-17

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US20100281625A1 (en) 2010-11-11
WO2009066941A3 (fr) 2009-09-17
EP2220279A2 (fr) 2010-08-25

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