US20050028295A1 - Method for controlling drum-type washing machine - Google Patents

Method for controlling drum-type washing machine Download PDF

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Publication number
US20050028295A1
US20050028295A1 US10/833,109 US83310904A US2005028295A1 US 20050028295 A1 US20050028295 A1 US 20050028295A1 US 83310904 A US83310904 A US 83310904A US 2005028295 A1 US2005028295 A1 US 2005028295A1
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Prior art keywords
switching
drum
wash water
circulation pump
water
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Abandoned
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US10/833,109
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English (en)
Inventor
Si Jeon
Sang Hong
Byung Choi
Moon Hong
Hyun Seo
Tae Lee
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LG Electronics Inc
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LG Electronics Inc
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Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHOI, BYUNG KEOL, HONG, MOON HEE, HONG, SANG WOOK, JEON, SI MOON, LEE, TAE HEE, SEO, HYUN SEOK
Publication of US20050028295A1 publication Critical patent/US20050028295A1/en
Abandoned legal-status Critical Current

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    • 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 
    • D06F33/46—Control of the energy or water consumption
    • 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
    • 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
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
    • 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
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress

Definitions

  • the present invention relates to a drum-type washing machine, and more particularly to a method for controlling a drum-type washing machine, in which a small quantity of wash water is supplied and heated, thereby reducing the supply rate of the wash water and the electric consumption rate required to heat the wash water.
  • drum-type washing machines are apparatuses for removing contaminants from laundry and bedding contained in a drum using the action of detergent and wash water contained in a tub through a series of washing, rinsing, and dehydrating modes.
  • FIG. 1 is a sectional view of a conventional drum-type washing machine.
  • the conventional drum-type washing machine comprises a base 1 , a casing 2 positioned on the base for forming an external appearance of the washing machine and provided with an opening 2 a for allowing laundry (m) to be put into and taken out of the washing machine, a door 4 rotatably installed at a front surface of the casing 2 for opening and closing the opening 2 a , a tub 6 supported in the casing 102 , a water supply unit 10 for supplying water containing detergent dissolved therein or clean water (hereinafter, referred to as “wash water (w)”) into the tub 6 , a drain unit 12 for discharging the wash water (w) in the tub 6 to the outside of the casing 2 , a drum 20 rotatably positioned in the tub 6 for containing the laundry (m), and a motor 30 for rotating the drum 20 .
  • wash water (w) for supplying water containing detergent dissolved therein or clean water
  • An opening 7 is formed through the tub 6 in the rear of the opening 2 a of the casing 2 for allowing the laundry (m) to be put into and taken out of the drum 20 .
  • the drum 20 is provided with a lower part submerged in the wash water (w) in the tub 6 , and includes an opening 21 formed therethrough in the rear of the opening 2 a of the casing 2 for allowing the laundry (m) to be put into and taken out of the drum 20 , and a plurality of water holes 22 formed through the circumference or the rear surface thereof so that the wash water (w) in the tub 6 is put into the drum 20 through the water holes 22 .
  • a plurality of lifters 26 for lifting up the laundry (m) contained in the drum 20 and allowing the laundry (m) to drop due to the force of gravity are installed on the inner circumference of the drum 20 .
  • the motor 30 is installed at the rear surface of the tub 6 , and is approximately horizontally disposed such that a rotary shaft 32 of the motor 30 traverses the central portion of the rear surface of the tub 6 and is then connected to the central portion of the rear surface of the drum 20 .
  • the drum-type washing machine further comprises a heater 8 installed on the lower surface of the tub 6 for heating the wash water (w) in the tub 6 , thereby increasing force for washing the laundry (m).
  • Non-described reference numeral 48 represents a gasket installed at the tub 6 for preventing water leakage between the door 4 and the opening 7 of the tub 6 when the door 4 is closed.
  • the laundry (m) is put into the drum 20 , and the door 4 is closed. Thereafter, when the washing machine is operated, the water supply unit 10 supplies the wash water (w) into the tub 6 from the lower surface of the tub 6 .
  • the water supply unit 10 supplies the wash water (w) to a level (h) higher than the lower end of the drum 20 , thus allowing the lower part of the drum 20 to be sufficiently submerged in the wash water (w).
  • the wash water (w) is introduced into the drum 20 through the water holes 22 or the opening 21 of the drum 20 , thereby soaking the laundry (m) (S 1 ).
  • the motor 30 is operated to rotate the drum 20 .
  • the laundry (m) is lifted up and dropped by the lifters 26 , thereby being cleaned by the action of the wash water (w) and a detergent (S 2 ).
  • the heater 8 heats the wash water (w) by means of power supplied thereto, and the wash water heated by the heater 8 has an increased solubility of the detergent, thus promoting the reaction between the detergent and dirt attached to the laundry (m) and rapidly and sanitarily eliminating the dirt from the laundry (m).
  • the contaminated wash water (w) in the tub 6 is discharged to the outside of the drum-type washing machine through the drain unit 12 (S 3 ).
  • the drum-type washing machine is operated in a rinse mode for rinsing detergent foam remaining in the laundry (m).
  • the water supply unit 10 supplies the wash water (w) to the level (h) higher than the lower end of the drum 20 , the wash water (w) is introduced into the drum 20 through the water holes 22 or the opening 21 of the drum 20 , the motor 30 rotates the drum 20 , and the laundry (m) in the drum 20 is lifted up and dropped by the lifters 26 so that the detergent foam remaining in the laundry (m) is rinsed (S 4 and S 5 ).
  • the heater 8 receives power supplied thereto and heats the wash water (w), and the detergent foam remaining in the laundry (m) is rapidly rinsed by the wash water (w) heated by the heater 8 .
  • the contaminated wash water containing the detergent foam is discharged to the outside through the drain unit 12 (S 6 ).
  • the motor 30 rotates the drum 20 at a high speed and the laundry (m) in the drum 20 is dehydrated by centrifugal separation (S 7 , S 8 , S 9 and S 10 ).
  • the above-described method for controlling the conventional drum-type washing machine is disadvantageous in that excessive wash water is consumed.
  • the heater heats a large quantity of the wash water
  • the above-described method for controlling the conventional drum-type washing machine is disadvantageous in that it has an increased energy consumption rate.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for controlling a drum-type washing machine, which reduces the amount of wash water supplied thereto.
  • a method for controlling a drum-type washing machine comprising the steps of: (a) switching on a water supply valve to supply wash water into a tub, and switching on a circulation pump to circulate the wash water in the tub into a drum; (b) switching off the water supply valve when a first predetermined time from the switching-on of the water supply valve elapses or the level of the supplied wash water is not less than a first predetermined level; and (c) switching off the circulation pump when a second predetermined time from the switching-off of the water supply valve elapses or the level of the supplied wash water is less than a second predetermined level, wherein the steps (a) to (c) are sequentially repeated several times.
  • a method for controlling a drum-type washing machine comprising the steps of: (a) switching on a water supply valve to supply wash water into a tub, switching on a circulation pump to circulate the wash water in the tub into a drum, and switching on a heater to heat the wash water in the tub; (b) switching off the water supply valve when a first predetermined time from the switching-on of the water supply valve elapses or the level of the supplied wash water is not less than a first predetermined level; and (c) switching off the circulation pump and the heater when a second predetermined time from the switching-off of the water supply valve elapses or the level of the supplied wash water is less than a second predetermined level, wherein the steps (a) to (c) are sequentially repeated several times.
  • FIG. 1 is a sectional view of a conventional drum-type washing machine
  • FIG. 2 is a flow chart illustrating a method for controlling the conventional drum-type washing machine
  • FIG. 3 is a perspective view of a drum-type washing machine of the present invention.
  • FIG. 4 is a sectional view of the drum-type Washing machine of the present invention.
  • FIG. 5 is a flow chart illustrating a method for controlling a drum-type washing machine in accordance with a first embodiment of the present invention.
  • FIG. 6 is a flow chart illustrating a method for controlling a drum-type washing machine in accordance with a second embodiment of the present invention.
  • FIG. 3 is a perspective view of a drum-type washing machine of the present invention.
  • FIG. 4 is a sectional view of the drum-type washing machine of the present invention.
  • the drum-type washing machine of the present invention comprises a base 103 , a cabinet 104 positioned on the base 103 , a cabinet cover 105 installed on a front surface of the cabinet 104 and provided with an opening 105 a for allowing laundry (m) to be put into and taken out of the cabinet 104 , a door 109 rotatably installed at a front surface of the cabinet cover 105 for opening and closing the opening 105 a , a top plate 106 installed on an upper surface of the cabinet 104 , and an operating panel 107 installed on the upper surface of the top plate 106 or the cabinet cover 105 and manipulated by a user for selecting one mode out of wash, rinse and dehydration modes.
  • a tub 110 is positioned above the base 103 and is supported by a spring 103 a and a damper 104 a.
  • the tub 110 having a cylindrical structure is transversely laid down in the cabinet 104 .
  • An opening 112 is formed through the tub 110 in the rear of the opening 105 a of the cabinet 105 , and a gasket 114 provided with a sealing portion adhered to the door 109 is installed around the edge of the opening 112 .
  • a drum 120 for containing laundry (m) to be cleaned is positioned in the tub 110 such that the drum 120 is spaced from the inner surface of the tub 110 .
  • the drum 120 having a cylindrical structure is transversely laid down in the tub 110 .
  • An opening 121 for allowing the laundry (m) to be put into and taken out of the drum 120 is formed through a front surface of the drum 120 , a plurality of water holes 122 are formed through a circumference or a rear surface of the drum 120 so that wash water (w) in the tub 110 is put into the drum 120 through the water holes 122 , and lifters 123 for lifting up the laundry (m) contained in the drum 20 and allowing the laundry (m) to drop are installed on the inner circumference of the drum 20 .
  • a motor 130 for supporting and rotating the drum 120 is installed at the tub 110 .
  • a rotary shaft 132 of the motor 130 traverses the central portion of the rear surface of the tub 110 and is supported by the tub 110 , and a front end of the rotary shaft 132 is connected to the rear surface of the drum 120 .
  • a water supply unit for supplying the wash water into the tub 110 is provided on the tub 110 .
  • the water supply unit includes a water supply valve 142 connected to an external hose 141 for intermitting clean water supply from the external hose 141 , a water supply hose 142 ′ for guiding the water passing through the water supply valve 142 , a detergent chamber 143 , having a detergent storage space, a water supply passage and an outlet, for mixing the water supplied through the water supply hose 142 with a detergent stored in advance and then discharging the mixture, and a water supply bellows tube 144 provided with one end connected to the outlet of the detergent chamber 143 and the other end connected to a water supply inlet formed on the upper surface of the tub 110 for guiding the mixture discharged from the detergent chamber 143 into the tub 110 .
  • a drain outlet 115 for discharging the wash water is formed through the lower surface of the tub 110 , and a drain bellows tube 148 for guiding the discharged wash water is connected to the drain outlet 115 .
  • a pump unit 150 for pumping out the wash water discharged from the tub 110 through the drain outlet 115 and the drain bellows tube 148 or re-circulating the discharged wash water into the drum is connected to the drain bellows tube 148 .
  • the pump unit 150 includes a filter case 152 , a drain pump 154 , and a circulation pump 156 .
  • a connector connected to the drain bellows tube 148 is installed at the filter case 152 , a passage for the wash water connected to the drain pump 154 and the circulation pump 156 is installed in the filter case 152 , and a filter (not shown) for filtering out foreign substances such as pieces of thread contained in the wash water is installed in the filter case 152 .
  • a drain hose 155 extended from the casing 102 is connected to the drain pump 154 , thereby allowing the drain pump 154 to discharge the water introduced into the filter case 152 to the outside therethrough.
  • a circulation hose 160 extended toward the upper part of the gasket 114 is connected to the circulation pump 156 , thereby allowing the circulation pump 156 to pump the water introduced into the filter case 142 to the circulation hose 160 .
  • One end of the circulation hose 160 is close to the upper part of the gasket 114 .
  • a spray hole 162 provided with a nozzle opened into the drum 120 and connected to the upper part of the gasket 114 for spraying the guided wash water into the drum 120 is connected to the circulation hose 160 .
  • an electric heater 170 for heating the wash water is installed in the lower part of the tub 110 .
  • the drum-type washing machine further comprises a water level sensing apparatus for sensing the level of the supplied wash water.
  • the above water level sensing apparatus includes a water level sensing bellows tube 180 connected to one end of the drain bellows tube 148 , an air chamber 182 communicating with a lower end of the water level sensing bellow tube 180 and filled with air, to which a pressure is applied, according to the level of water of the water level sensing bellows tube 180 , a water level sensing tube 184 connected to a lower end connected to one end of the air chamber 182 , and a water level sensor 186 connected to an upper end of the water level sensing tube 184 for sensing the level of the supplied wash water by sensing an air pressure in the water level sensing tube 184 .
  • Non-described reference numeral 190 represents a control unit for controlling the motor 130 , the water supply valve 142 , the drain pump 154 , the circulation pump 156 and the heater 170 based on the manipulation of the operating panel 107 and the level of the wash water sensed by the water level sensor 186 .
  • FIG. 5 is a flow chart illustrating a method for controlling a drum-type washing machine in accordance with a first embodiment of the present invention.
  • the drum-type washing machine is operated. Then, the control unit 190 determines whether or not a wash mode is selected, and in case that it is determined that the wash mode is selected, the control unit 190 switches on the water supply valve 142 and switches on the circulation pump 156 (S 101 ).
  • Wash water (w) supplied from the external hose 141 is introduced into the detergent chamber 143 through the water supply valve 142 and the water supply hose 142 ′, when the water supply valve 142 is switched on, passes through the detergent chamber 143 , and is then supplied into the tub 110 .
  • the wash water (w) supplied into the tub 110 is discharged to the filter case 152 and the drain bellows tube 148 through the drain outlet 115 of the tub 110 , and fills the filter case 152 and the drain bellows tube 148 .
  • the wash water (w) is pumped by the circulation pump 156 , and is sprayed into the drum 120 through the circulation hose 160 and the spray hole 162 , thereby rapidly soaking the laundry (m).
  • the control unit 190 controls the water supply valve 142 such that only a small quantity of the wash water is supplied.
  • control unit 190 switches off the water supply valve 142 when a first predetermined time (T 1 ) from the switching-on of the water supply valve 142 elapses or the level (h) of the supplied wash water is not less than a first predetermined level (h 1 ) (S 102 and S 103 ).
  • the first predetermined time (T 1 ) and the first predetermined level (h 1 ) are set such that the supplied wash water has a quantity pumped by the circulation pump 156 , and preferably, the level of the supplied wash water is lower than the lower end of the drum 120 .
  • the control unit 190 switches off the circulation pump 156 when a second predetermined time (T 2 ) from the switching-off of the water supply valve 142 elapses or the level (h) of the supplied wash water is less than a second predetermined level (h 2 ) (S 104 and S 105 ).
  • the second predetermined level (h 2 ) is set to be lower than the first predetermined level (h 1 ).
  • the control unit 190 re-supplies a quantity of the wash water required to operate the circulation pump 156 .
  • T 3 a third predetermined time from the switching-off of the circulation pump 156 elapses
  • the control unit 190 determines whether or not the wash water is re-supplied or not based on the frequency of the switching-on/off of the water supply valve 142 and the circulation pump 156 and the level (h) of the supplied wash water, thereby determining whether or not the switching-on of the water supply valve 142 and the circulation pump 156 , the switching-off of the water supply valve 142 , and the switching-off of the circulation pump 156 are repeated (S 106 and S 107 ).
  • control unit 190 repeats the switching-on of the water supply valve 142 and the circulation pump 156 , the switching-off of the water supply valve 142 , and the switching-off of the circulation pump 156 are repeated, until the frequency of the switching-on/off of the water supply valve 142 and the circulation pump 156 is more than a predetermined number (for example, four times) or the level (h) of the supplied wash water is not less than a third predetermined level (h 3 )
  • the third predetermined level (h 3 ) is set to be higher than the first predetermined level (h 1 ).
  • the wash water Since the wash water is supplied into the drum-type washing machine, is circulated, and is then re-supplied to the drum-type washing machine, the wash water rapidly and sufficiently soaks the laundry (m) and the laundry (m) is effectively washed by only a small quantity of the wash water (w).
  • the control unit 190 stops the resupply of the wash water, and switches on the motor 130 to rotate the drum 120 (S 108 ).
  • the wash water (w) soaking the laundry (m) fills the tub 110 through the water holes 122 of the drum 120 , and is collected in the filter case 152 or the drain bellows tube 148 .
  • the wash water (w) collected in the filter case 152 or the drain bellows tube 148 is pumped by the circulation pump 156 and is sprayed into the drum 120 so as to soak the laundry (m).
  • the wash water soaking the laundry (m) increases the weight of the laundry (m), thus increasing the dropping force of the laundry (m) having the increased weight and improving launderability.
  • the control unit 190 switches off the motor 130 and the circulation pump 156 , thereby terminating the wash mode (S 111 and S 112 ).
  • control unit 190 switches on the drain pump 154 for a designated time so that the contaminated wash water is discharged to the outside through the drain hose 155 , and switches off the drain pump 154 (S 113 ).
  • the control unit 190 determines whether or not a rinse mode is selected after the water supply, the water re-supply, the wash and the drain steps are performed, and in case that it is determined that the rinse mode is selected, the control unit 190 repeats at least one cycle of the water supply, the water re-supply, the rinse and the drain steps the same as the above wash mode.
  • control unit 190 determines whether or not a dehydration mode is selected, and in case that it is determined that the dehydration mode is selected, the control unit 190 switches on the motor 130 at a high speed for a designated time, thereby dehydrating moisture remaining in the laundry (m) by centrifugal separation.
  • FIG. 6 is a flow chart illustrating a method for controlling a drum-type washing machine in accordance with a second embodiment of the present invention.
  • the drum-type washing machine is operated. Then, the control unit 190 determines whether or not a wash mode is selected, and in case that it is determined that the wash mode is selected, the control unit 190 switches on the water supply valve 142 and switches on the heater 170 and the circulation pump 156 (S 201 ).
  • wash water (w) supplied from the external hose 141 is introduced into the tub 110 , and the wash water (w) supplied into the tub 110 is heated by the heater 170 positioned at the lower part of the tub 110 and fills the filter case 152 and the drain bellows tube 148 through the drain outlet 115 of the tub 110 .
  • the wash water (w) filling the filter case 152 and the drain bellows tube 148 is pumped by the circulation pump 156 , and is sprayed into the drum 120 through the circulation hose 160 and the spray hole 162 , thereby rapidly soaking the laundry (m).
  • control unit 190 controls the water supply valve 142 such that only a small quantity of the wash water is supplied.
  • control of the water supply valve in the second embodiment is substantially the same as that of the first embodiment, and a detailed description thereof will thus be omitted because it is considered to be unnecessary (S 202 and S 203 ).
  • the heater 170 heats only the small quantity of the wash water (w) dropped down to the bottom of the tub 110 , it is possible to rapidly heat the wash water (w), thereby increasing heating efficiency of the heater 170 and reducing a power consumption rate required to operate the heater 170 .
  • the control unit 190 switches off the circulation pump 156 and the heater 170 when a second predetermined time (T 2 ) from the switching-off of the water supply valve 142 elapses or the level (h) of the supplied wash water is less than a second predetermined level (h 2 ) (S 204 and S 205 ).
  • the switching-off of the circulation pump 156 of the second embodiment is substantially the same as that of the first embodiment, and a detailed description thereof will thus be omitted because it is considered to be unnecessary.
  • the control unit 190 re-supplies a quantity of the wash water required to operate the circulation pump 156 .
  • T 3 a third predetermined time from the switching-off of the circulation pump 56 elapses
  • the control unit 190 determines whether or not the wash water is re-supplied or not based on the frequency of the switching-on/off of the water supply valve 142 , the circulation pump 156 and the heater 170 , and the level (h) of the supplied wash water, thereby determining whether or not the switching-on of the water supply valve 142 , the circulation pump 156 and the heater 170 , the switching-off of the water supply valve 142 , and the switching-off of the circulation pump 156 and the heater 170 are repeated (S 206 and S 207 ).
  • control unit 190 repeats the switching-on of the water supply valve 142 , the circulation pump 156 and the heater 170 , the switching-off of the water supply valve 142 , and the switching-off of the circulation pump 156 and the heater 170 are repeated, until the frequency of the switching-on/off of the water supply valve 142 , the circulation pump 156 and the heater 170 is more than a predetermined number (for example, four times) or the level (h) of the supplied wash water is not less than a third predetermined level (h 3 ).
  • the third predetermined level (h 3 ) is set to be higher than the first predetermined level (h 1 ).
  • the wash water Since the wash water is supplied into the drum-type washing machine, is circulated, and is then re-supplied to the drum-type washing machine, the wash water rapidly and sufficiently soaks the laundry (m) and the laundry (m) is effectively washed by only a small quantity of the wash water (w). Further, since the heater 170 heats only the small quantity of the supplied wash water (w), it is possible to rapidly heat the wash water (w), thereby increasing heating efficiency of the heater 170 and reducing a power consumption rate required to operate the heater 170 .
  • the control unit 190 stops the resupply and heating of the wash water, and switches on the motor 130 to rotate the drum 120 (S 208 ).
  • the drum 120 When the motor 130 is switched on, the drum 120 is rotated, and the laundry (m) is lifted up by the lifters 126 and is then dropped, thereby being cleaned by the action of the wash water (w).
  • the wash water (w) heated by the heater 170 has an increased solubility of the detergent, thus promoting the reaction between the detergent and dirt attached to the laundry (m) and rapidly and sanitarily eliminating the dirt from the laundry (m).
  • the wash water (w) soaking the laundry (m) fills the tub 110 through the water holes 122 of the drum 120 , and is collected in the filter case 152 or the drain bellows tube 148 .
  • the switching-on of the circulation pump 156 of the second embodiment is substantially the same as that of the first embodiment, and a detailed description thereof will thus be omitted because it is considered to be unnecessary.
  • the control unit 190 switches off the motor 130 and the circulation pump 156 , thereby terminating the wash mode (S 211 and S 212 ).
  • control unit 190 switches on the drain pump 154 for a designated time so that the contaminated wash water is discharged to the outside through the drain hose 155 , and switches off the drain pump 154 (S 213 ).
  • the control unit 190 determines whether or not a rinse mode is selected after the water supply, the water re-supply, the wash and the drain steps are performed, and in case that it is determined that the rinse mode is selected, the control unit 190 repeats at least one cycle of the water supply, the water re-supply, the rinse and the drain steps the same as the above wash mode.
  • the rinse and dehydration modes of the second embodiment are substantially the same as those of the first embodiment, and detailed descriptions thereof will thus be omitted because they is considered to be unnecessary.
  • the present invention is not limited to the above-described embodiments. That is, whether or not the water supply valve 142 is switched off may be determined using only one of the first predetermined time (T 1 ) and the first predetermined level (h 1 ), and whether or not the circulation pump 156 and the heater 170 are switched off using only one of the second predetermined time (T 2 ) and the second predetermined level (h 2 ). Further, whether or not the wash water is re-supplied may be determined using only one of the predetermined frequency and the third predetermined level (h 3 ).
  • the present invention provides a method for controlling a drum-type washing machine comprising the steps of: (a) switching on a water supply valve and switching on a circulation pump; (b) switching off the water supply valve after the switching-on of the water supply valve; and (c) switching off the circulation pump after the switching-off of the water supply valve, wherein the steps (a) to (c) are sequentially repeated several times, thus allowing a small quantity of the wash water to rapidly and sufficiently soak laundry (m) and the laundry (m) to be effectively washed using a small quantity of the wash water.
  • the present invention provides a method for controlling a drum-type washing machine comprising the steps of: (a) switching on a water supply valve and switching on a circulation pump and a heater; (b) switching off the water supply valve after the switching-on of the water supply valve; and (c) switching off the circulation pump and the heater after the switching-off of the water supply valve, wherein the steps (a) to (c) are sequentially repeated several times, thus allowing the laundry (m) to be effectively washed using a small quantity of the wash water and minimizing a power consumption rate required to operate the heater.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US10/833,109 2003-08-07 2004-04-28 Method for controlling drum-type washing machine Abandoned US20050028295A1 (en)

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KR2003-54628 2003-08-07
KR1020030054628A KR100550543B1 (ko) 2003-08-07 2003-08-07 드럼 세탁기의 제어 방법

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US (1) US20050028295A1 (ja)
EP (1) EP1505190A3 (ja)
JP (1) JP2005052632A (ja)
KR (1) KR100550543B1 (ja)
CN (1) CN100374639C (ja)

Cited By (13)

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US20070118997A1 (en) * 2005-08-23 2007-05-31 Choi Du H Washing machine
US20080083132A1 (en) * 2005-01-26 2008-04-10 Bsh Bosch Und Siemens Hausgerate Bmbh Method for Spin-Drying Textiles After an Impregnation Process
US20080216250A1 (en) * 2007-03-05 2008-09-11 Samsung Electronics Co., Ltd. Washing machine and method for controlling the same
WO2011025316A3 (en) * 2009-08-27 2011-04-21 Lg Electronics Inc. Control method of laundry machine
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EP2703537A1 (en) * 2012-08-29 2014-03-05 Electrolux Home Products Corporation N.V. Method for washing laundry in a laundry washing machine and laundry washing machine
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US20210087734A1 (en) * 2018-02-22 2021-03-25 Lg Electronics Inc. Washing apparatus and method for controlling same
US11169548B2 (en) 2018-07-25 2021-11-09 Kohler Co. Water level detection via pressure sensing device
US11906990B2 (en) 2018-07-25 2024-02-20 Kohler Co. Water level detection via pressure sensing device
US11459692B2 (en) 2019-01-31 2022-10-04 Ecolab Usa Inc. Laundry machine kit to enable control of water levels, recirculation, and spray of chemistry
US11525200B2 (en) 2019-01-31 2022-12-13 Ecolab Usa Inc. Controller for a rinse water reuse system and methods of use
US11572652B2 (en) 2019-01-31 2023-02-07 Ecolab Usa Inc. Controlling water levels and detergent concentration in a wash cycle
US11725373B2 (en) 2019-12-14 2023-08-15 Kohler Co. Drain system for bathtub

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EP1505190A3 (en) 2005-03-02
JP2005052632A (ja) 2005-03-03

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