US20060143836A1 - Washing machine and method for controlling supply of water thereof - Google Patents
Washing machine and method for controlling supply of water thereof Download PDFInfo
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- US20060143836A1 US20060143836A1 US11/188,796 US18879605A US2006143836A1 US 20060143836 A1 US20060143836 A1 US 20060143836A1 US 18879605 A US18879605 A US 18879605A US 2006143836 A1 US2006143836 A1 US 2006143836A1
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- Prior art keywords
- water
- laundry
- supplied
- cold
- washing machine
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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
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
- D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C15/00—Pavings specially adapted for footpaths, sidewalks or cycle tracks
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
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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
- 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
- D06F39/088—Liquid supply arrangements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C2201/00—Paving elements
- E01C2201/20—Drainage details
- E01C2201/202—Horizontal drainage channels
- E01C2201/207—Horizontal drainage channels channels on the bottom
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/22—Pavings made of prefabricated single units made of units composed of a mixture of materials covered by two or more of groups E01C5/008, E01C5/02 - E01C5/20 except embedded reinforcing materials
Definitions
- the present invention relates to a washing machine having a front water supply structure in which water is supplied directly to laundry, and more particularly, to a washing machine for supplying cold water to laundry for soaking the laundry and then supplying warm water at a high temperature to the laundry so as to prevent contaminants from degenerating and a method for controlling the supply of water of the washing machine.
- a washing machine (mainly, a drum washing machine) is an apparatus for washing laundry in a cylindrical rotary drum by force of lifting the laundry and then dropping the laundry when the rotary drum is rotated.
- the drum washing machine has a long washing time, but minimizes damage to the laundry and has a low water consumption rate, and thus demand for drum washing machines is increasing.
- the water when water is supplied to the inside of a tub so as to perform washing operation, the water is supplied from a water supply device to the inside of the tub so that the laundry soaks in the water coming up from the bottom of the tub, or the water is supplied directly to the laundry in the rotary drum through an opening formed through the front surface of the rotary drum so that the laundry soaks in the water.
- the warm water directly contacts the surface of laundry made of a material with poor heat resistance, such as wool, silk or delicate clothes, the warm water damages the laundry and causes detergent to stick to the laundry, thereby generating spots on the laundry.
- a material with poor heat resistance such as wool, silk or delicate clothes
- Illustrative, non-limiting embodiments of the present invention overcome the above disadvantages and other disadvantages not described above.
- the present invention is not required to overcome the disadvantages described above, and an illustrative, non-limiting embodiment of the present invention may not overcome any of the problems described above.
- one aspect of the invention is to provide a washing machine for supplying cold water to laundry for sufficiently soaking the laundry and then supplying swarm water at a high temperature to the laundry thereby preventing contaminants from degenerating, and a method for controlling the supply of water of the washing machine.
- Another aspect of the invention is to provide a washing machine for preventing laundry made of a material having poor heat resistance from becoming stained and damaged by warm water of a high temperature when the laundry is washed.
- the present invention provides a method for controlling the supply of water of a washing machine comprising a determination of whether or not a water supply operation is selected; supplying cold water to soak laundry when it is determined that the water supply operation is selected; and supplying warm water after the soaking of the laundry in the cold water to prevent contaminants of the laundry from degenerating.
- the water supply operation may be a water supply step of a washing operation.
- the cold water may be supplied for a predetermined time, and the predetermined time may be set according to the quantity of the laundry.
- the cold and warm water may be supplied after the soaking of the laundry in the cold water, so that the level of the supplied water reaches a predetermined level, and the predetermined level may be a quantity of the washing water set according to the quantity of the laundry.
- the cold and warm water is supplied after the soaking of the laundry in the cold water, so that the temperature of the supplied water reaches a predetermined temperature, and the predetermined temperature may be a temperature set by a user.
- the present invention provides a method for controlling the supply of water of a washing machine having a rotary drum for containing laundry comprising a determination of whether or not a water supply operation is selected; supplying cold water to soak the laundry when it is determined that the water supply operation is selected; and supplying cold water and warm water after the soaking of the laundry in the cold water to control the level and the washing temperature of the supplied water.
- a motor drives the rotary drum during the soaking of the laundry in the cold water.
- the level and the washing temperature of the supplied water may be controlled by simultaneously or alternately supplying the warm water and the cold water.
- the present invention provides a method for controlling the supply of water of a washing machine, in which cold water or warm water is supplied directly to laundry, comprising a determination of whether or not a water supply operation is selected; supplying cold water for a designated time to soak the laundry when it is determined that the water supply operation is selected; simultaneously supplying cold water and warm water after the soaking of the laundry in the cold water so that the level of the supplied water reaches a predetermined level; and alternately supplying cold water and warm water after the soaking of the laundry in the cold water so that the temperature of the supplied water reaches a predetermined washing temperature.
- the present invention provides a method for controlling the supply of water of a washing machine having a rotary drum for containing laundry comprising: a water supply unit for supplying cold water or warm water directly to the laundry; and a control unit for controlling supply of water when a water supply operation is selected so that cold water is first supplied to the rotary drum to soak the laundry and warm water is then supplied to the rotary drum.
- the control of the supply of the water may be performed during a washing operation.
- control unit may control the water supply unit so that cold and warm water is simultaneously supplied to the rotary drum after the soaking of the laundry in cold water and the level of the supplied water reaches a predetermined level.
- control unit may control the water supply unit so that cold water and warm water are alternately supplied to the rotary drum after the soaking of the laundry in cold water and the temperature of the supplied water reaches a predetermined temperature.
- FIG. 1 is a sectional view of a washing machine consistent with an exemplary embodiment of the present invention
- FIG. 2 is a block diagram of an apparatus for controlling the supply of water of the washing machine consistent with an exemplary embodiment of the present invention.
- FIG. 3 is a flow chart illustrating a method for controlling the supply of water of the washing machine consistent with an exemplary embodiment of the present invention.
- FIG. 1 is a sectional view of a washing machine consistent with an exemplary embodiment of the present invention.
- the washing machine of the present invention comprises a drum-shaped tub 11 installed in a main body 10 for containing washing water, and a rotary drum 12 rotatably installed in the tub 11 .
- the tub 11 slopes toward the installation ground of the washing machine at a designated angle (a) so that a front surface 11 a of the tub 11 , through which an opening 11 b is formed, is located at a position higher than that of the rear surface 1 c of the tub 11 .
- the rotary drum 12 installed in the tub 11 has the same structure as that of the tub 11 so that a front surface 12 a of the rotary drum 12 , through which an opening 12 b is formed, is located at a position higher than that of the rear surface 12 c of the rotary drum 12 .
- the front surface 12 a of the rotary drum 12 provided with the opening 12 b ascends forward in a slantwise fashion such that a rotary central line A of the rotary drum 12 meets the installation ground of the washing machine at the designated angle ( ⁇ ).
- a rotary shaft 13 connected to the central portion of the rear surface 12 c of the rotary drum 12 , is rotatably supported by the central portion of the rear surface 11 c of the tub 11 , the rotary drum 12 is rotated in the tub 11 .
- a plurality of through holes 12 d are formed through the cylindrical surface of the rotary drum 12 , and a plurality of lifters 14 for lifting and dropping the laundry when the rotary drum 12 is rotated are installed on the inner surface of the rotary drum 12 .
- a motor 15 serving as a driving device for rotating the rotary shaft 13 connected to the rotary drum 12 is installed outside the rear surface 11 c of the tub 11 .
- the motor 15 comprises a stator 15 a fixed to the rear surface 11 c of the tub 11 , a rotor 15 b rotatably disposed outside the stator 15 a , and a rotary plate 15 c connecting the rotor 15 b and the rotary shaft 13 .
- An opening 16 is formed through the front surface of the main body 10 at a position corresponding to the opening 12 b of the rotary drum 12 and the opening 11 b of the tub 11 so that the laundry is inserted into or taken out of the rotary drum 12 through the opening 16 .
- a door 17 for opening and closing the opening 16 is installed on the front surface of the main body 10 .
- a detergent supply device 18 for supplying detergent and a water supply device 20 for supplying washing water are installed above the tub 11 .
- a drainage device 19 comprising a drainage pipe 19 a , a drainage valve 19 b and a drainage pump 19 c for discharging water from the inside of the tub 11 to the outside of the tub 11 is installed below the tub 11 .
- the detergent supply device 18 comprises a space for containing the detergent, and is installed in the front surface of the main body 10 so that a user can easily put the detergent into the detergent supply device 18 .
- the water supply device 20 comprises cold and warm water supply pipes 21 and 22 for respectively supplying cold water and warm water, and cold and warm water valves 23 and 24 , respectively installed in the cold and warm water supply pipes 21 and 22 , for controlling the supply of the water to the cold and warm water supply pipes 21 and 22 .
- the cold and warm water supply pipes 21 and 22 are connected to the detergent supply device 18 so that water is supplied from the outside to the detergent supply device 18 .
- a separate water supply pipe 25 is installed between the detergent supply device 18 and the tub 11 so that the water, passed through the detergent supply device 18 , is supplied to the tub 11 , and a water supply nozzle 26 is installed at the outlet of the water supply pipe 25 .
- the above structure causes the water supplied to the inside of the tub 11 to pass through the detergent supply device 18 , thereby causing the detergent in the detergent supply device 18 to be supplied to the tub 11 .
- FIG. 2 is a block diagram of an apparatus for controlling the supply of water of the washing machine in accordance with an embodiment of the present invention.
- the apparatus comprises a signal input unit 100 , a water level sensing unit 110 , a temperature sensing unit 120 , a control unit 130 , and an operating unit 140 .
- the signal input unit 100 serves to input operating data, such as a washing course, a washing temperature, a dehydration speed, and whether or not a rinsing operation is added, which are selected by a user, to the control unit 130 .
- the water level sensing unit 110 serves to sense the level of the washing water supplied to the tub 11
- the temperature sensing unit 120 serves to sense the temperature of the washing water supplied to in the tub 11 .
- the control unit 130 is a microcomputer for controlling the operation of the cold and warm water valves 23 and 24 according to the operating data inputted from the signal input unit 100 and the values sensed by the water level sensing unit 110 and the temperature sensing unit 120 .
- the control unit 130 includes a timer for counting operating times of the cold and warm water valves 23 and 24 , and a read-only memory for storing data, such as predetermined times and predetermined water levels according to quantities of the laundry.
- the control unit 130 first supplies cold water to soak the laundry, thereby preventing the laundry from degenerating when warm water at a high temperature is supplied to the laundry.
- the control unit 130 secondarily supplies cold water and warm water simultaneously to soak the laundry, thereby causing the supplied water to have a temperature between the temperature of the cold water and the temperature of the warm water
- the control unit 130 thirdly supplies cold water and warm water in an alternating fashion, thereby controlling the washing temperature.
- the operating unit 140 drives the motor 15 , the cold water valve 23 , the warm water valve 24 , the drainage valve 19 b and the drainage pump 19 c according to a driving control signal of the control unit 130 .
- FIG. 3 is a flow chart illustrating a method for controlling the supply of water of the washing machine in accordance with the present invention.
- the operating data selected by the user are inputted to the control unit 130 through the signal input unit 100 (S 100 ).
- the control unit 130 drives the operating unit 140 to open the cold water valve 23 so that cold water (at a temperature of approximately 15.6° C.) is supplied to the inside of the tub 11 through the cold water supply pipe 21 (S 110 ).
- control unit 130 drives the operating unit 140 to drive the motor 15 so that the rotary drum 12 is rotated at a predetermined number of revolutions per minute and a predetermined operation ratio (on/off ratio), thereby causing the laundry to soak in cold water by force for lifting the laundry in the rotary drum 12 and dropping the laundry.
- the turning-on time of the cold water valve 23 is checked, and it is determined whether or not the turning-on time of the cold water valve 23 exceeds a predetermined time (time set by the quantity of the laundry for preventing the contaminants of the laundry from degenerating, due to the supply of warm water of the high temperature, by soaking the laundry in the first-supplied cold water) (S 120 ).
- the control unit 130 drives the operating unit 140 to simultaneously open the cold water valve 23 and the warm water valve 24 so that cold water and warm water are simultaneously supplied to the inside of the tub 12 through the cold and warm water supply pipes 21 and 22 (S 130 ).
- the level of the washing water is sensed, and it is determined whether or not the level of the washing water reaches a predetermined level (level set by the quantity of the laundry for allowing the supplied water to have a temperature half of a predetermined temperature by soaking the laundry in the simultaneously supplied-cold and warm water) (S 140 ).
- the control unit 130 drives the operating unit 140 to alternate the opening and closing of the cold water valve 23 and the warm water valve 24 so that cold water and warm water are alternately supplied to the inside of the tub 11 through the cold and warm water supply pipes 21 and 22 (S 150 ).
- the temperature of the washing water supplied to the tub 11 is sensed, and it is determined whether or not the sensed temperature of the washing water reaches a predetermined temperature (the washing temperature) (S 160 ).
- the control unit 130 commands the operating unit 140 to close the cold water valve 23 and the warm water valve 24 so that the supply of the water to the cold and warm water supply pipes 21 and 22 is stopped (S 170 ).
- control unit 130 drives the operating unit 140 to drive the motor 15 so that the rotary drum 12 is rotated at a low speed and other remaining operations (washing, rinsing, and dehydrating operations) are performed according to the selected washing course (S 180 ).
- the present invention provides a washing machine for supplying cold water to laundry for sufficiently soaking the laundry and then supplying warm water at a high temperature to the laundry, and a method for controlling the supply of water of the washing machine, thereby preventing contaminants from degenerating, and preventing the laundry made of a material having poor heat resistance from being stained and being damaged by warm water of the high temperature directly contacting the laundry when the laundry is washed.
Abstract
A washing machine for preventing contaminants from degenerating and laundry from being damaged when water is supplied in a washing operation, and a method for controlling the supply of water thereof. Particularly, a washing machine for supplying cold water to laundry for sufficiently soaking the laundry and then supplying warm water at a high temperature to the laundry so as to prevent contaminants from degenerating, and a method for controlling the supply of water of the washing machine, thereby preventing the deterioration of washing performance of the washing machine. The method includes determining whether or not a water supply operation is selected, supplying cold water to soak laundry when it is determined that the water supply operation is selected and supplying warm water, after the soaking of the laundry in the cold water, to prevent contaminants of the laundry from degenerating.
Description
- This application claims priority to Korean Patent Application No. 2005-1357, filed Jan. 6, 2005, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to a washing machine having a front water supply structure in which water is supplied directly to laundry, and more particularly, to a washing machine for supplying cold water to laundry for soaking the laundry and then supplying warm water at a high temperature to the laundry so as to prevent contaminants from degenerating and a method for controlling the supply of water of the washing machine.
- 2. Description of the Related Art
- Generally, a washing machine (mainly, a drum washing machine) is an apparatus for washing laundry in a cylindrical rotary drum by force of lifting the laundry and then dropping the laundry when the rotary drum is rotated. Compared to a conventional pulsator washing machine, the drum washing machine has a long washing time, but minimizes damage to the laundry and has a low water consumption rate, and thus demand for drum washing machines is increasing.
- In the above-described drum washing machine, when water is supplied to the inside of a tub so as to perform washing operation, the water is supplied from a water supply device to the inside of the tub so that the laundry soaks in the water coming up from the bottom of the tub, or the water is supplied directly to the laundry in the rotary drum through an opening formed through the front surface of the rotary drum so that the laundry soaks in the water.
- In a front water supply structure of the above washing machine in which the water is supplied from the opening of the rotary drum directly to the laundry, warm water (at a temperature of approximately 57.2° C.) directly contacts the laundry, thereby degenerating contaminants of the laundry and deteriorating the washing performance of the washing machine.
- Further, when the warm water directly contacts the surface of laundry made of a material with poor heat resistance, such as wool, silk or delicate clothes, the warm water damages the laundry and causes detergent to stick to the laundry, thereby generating spots on the laundry.
- Illustrative, non-limiting embodiments of the present invention overcome the above disadvantages and other disadvantages not described above. In addition, the present invention is not required to overcome the disadvantages described above, and an illustrative, non-limiting embodiment of the present invention may not overcome any of the problems described above.
- Therefore, one aspect of the invention is to provide a washing machine for supplying cold water to laundry for sufficiently soaking the laundry and then supplying swarm water at a high temperature to the laundry thereby preventing contaminants from degenerating, and a method for controlling the supply of water of the washing machine.
- Another aspect of the invention is to provide a washing machine for preventing laundry made of a material having poor heat resistance from becoming stained and damaged by warm water of a high temperature when the laundry is washed.
- In accordance with one aspect, the present invention provides a method for controlling the supply of water of a washing machine comprising a determination of whether or not a water supply operation is selected; supplying cold water to soak laundry when it is determined that the water supply operation is selected; and supplying warm water after the soaking of the laundry in the cold water to prevent contaminants of the laundry from degenerating.
- Preferably, the water supply operation may be a water supply step of a washing operation.
- Further, preferably, the cold water may be supplied for a predetermined time, and the predetermined time may be set according to the quantity of the laundry.
- Moreover, preferably, the cold and warm water may be supplied after the soaking of the laundry in the cold water, so that the level of the supplied water reaches a predetermined level, and the predetermined level may be a quantity of the washing water set according to the quantity of the laundry.
- Preferably, the cold and warm water is supplied after the soaking of the laundry in the cold water, so that the temperature of the supplied water reaches a predetermined temperature, and the predetermined temperature may be a temperature set by a user.
- In accordance with a further aspect, the present invention provides a method for controlling the supply of water of a washing machine having a rotary drum for containing laundry comprising a determination of whether or not a water supply operation is selected; supplying cold water to soak the laundry when it is determined that the water supply operation is selected; and supplying cold water and warm water after the soaking of the laundry in the cold water to control the level and the washing temperature of the supplied water.
- Preferably, a motor drives the rotary drum during the soaking of the laundry in the cold water.
- Preferably, the level and the washing temperature of the supplied water may be controlled by simultaneously or alternately supplying the warm water and the cold water.
- In accordance with another aspect, the present invention provides a method for controlling the supply of water of a washing machine, in which cold water or warm water is supplied directly to laundry, comprising a determination of whether or not a water supply operation is selected; supplying cold water for a designated time to soak the laundry when it is determined that the water supply operation is selected; simultaneously supplying cold water and warm water after the soaking of the laundry in the cold water so that the level of the supplied water reaches a predetermined level; and alternately supplying cold water and warm water after the soaking of the laundry in the cold water so that the temperature of the supplied water reaches a predetermined washing temperature.
- In accordance with yet another aspect, the present invention provides a method for controlling the supply of water of a washing machine having a rotary drum for containing laundry comprising: a water supply unit for supplying cold water or warm water directly to the laundry; and a control unit for controlling supply of water when a water supply operation is selected so that cold water is first supplied to the rotary drum to soak the laundry and warm water is then supplied to the rotary drum.
- The control of the supply of the water may be performed during a washing operation.
- Further, the control unit may control the water supply unit so that cold and warm water is simultaneously supplied to the rotary drum after the soaking of the laundry in cold water and the level of the supplied water reaches a predetermined level.
- Moreover, the control unit may control the water supply unit so that cold water and warm water are alternately supplied to the rotary drum after the soaking of the laundry in cold water and the temperature of the supplied water reaches a predetermined temperature.
- Additional aspects and/or advantages of the invention will be set forth in the description that follows and, in part, will be apparent from the description, or may be learned by practice of the invention.
- These and/or other aspects and advantages of the invention will become apparent and more readily appreciated from the following description of the illustrative, * non-limiting embodiments, taken in conjunction with the accompanying drawings in which:
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FIG. 1 is a sectional view of a washing machine consistent with an exemplary embodiment of the present invention; -
FIG. 2 is a block diagram of an apparatus for controlling the supply of water of the washing machine consistent with an exemplary embodiment of the present invention; and -
FIG. 3 is a flow chart illustrating a method for controlling the supply of water of the washing machine consistent with an exemplary embodiment of the present invention. - Reference will now be made in detail to an illustrative, non-limiting embodiment of the present invention, an example of which is illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The illustrative, non-limiting embodiment is described below to explain the present invention by referring to the annexed drawings.
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FIG. 1 is a sectional view of a washing machine consistent with an exemplary embodiment of the present invention. - In
FIG. 1 , the washing machine of the present invention comprises a drum-shaped tub 11 installed in amain body 10 for containing washing water, and arotary drum 12 rotatably installed in thetub 11. - The
tub 11 slopes toward the installation ground of the washing machine at a designated angle (a) so that a front surface 11 a of thetub 11, through which anopening 11 b is formed, is located at a position higher than that of the rear surface 1 c of thetub 11. Therotary drum 12 installed in thetub 11 has the same structure as that of thetub 11 so that afront surface 12 a of therotary drum 12, through which anopening 12 b is formed, is located at a position higher than that of therear surface 12 c of therotary drum 12. - That is, the
front surface 12 a of therotary drum 12 provided with the opening 12 b ascends forward in a slantwise fashion such that a rotary central line A of therotary drum 12 meets the installation ground of the washing machine at the designated angle (α). Here, since arotary shaft 13, connected to the central portion of therear surface 12 c of therotary drum 12, is rotatably supported by the central portion of therear surface 11 c of thetub 11, therotary drum 12 is rotated in thetub 11. - A plurality of through
holes 12 d are formed through the cylindrical surface of therotary drum 12, and a plurality oflifters 14 for lifting and dropping the laundry when therotary drum 12 is rotated are installed on the inner surface of therotary drum 12. - A
motor 15 serving as a driving device for rotating therotary shaft 13 connected to therotary drum 12 is installed outside therear surface 11 c of thetub 11. Themotor 15 comprises astator 15 a fixed to therear surface 11 c of thetub 11, arotor 15 b rotatably disposed outside thestator 15 a, and arotary plate 15 c connecting therotor 15 b and therotary shaft 13. - An
opening 16 is formed through the front surface of themain body 10 at a position corresponding to the opening 12 b of therotary drum 12 and the opening 11 b of thetub 11 so that the laundry is inserted into or taken out of therotary drum 12 through the opening 16. Adoor 17 for opening and closing theopening 16 is installed on the front surface of themain body 10. - A
detergent supply device 18 for supplying detergent and awater supply device 20 for supplying washing water are installed above thetub 11. Adrainage device 19 comprising adrainage pipe 19 a, adrainage valve 19 b and adrainage pump 19 c for discharging water from the inside of thetub 11 to the outside of thetub 11 is installed below thetub 11. - The
detergent supply device 18 comprises a space for containing the detergent, and is installed in the front surface of themain body 10 so that a user can easily put the detergent into thedetergent supply device 18. - The
water supply device 20 comprises cold and warmwater supply pipes warm water valves water supply pipes water supply pipes - Here, the cold and warm
water supply pipes detergent supply device 18 so that water is supplied from the outside to thedetergent supply device 18. A separatewater supply pipe 25 is installed between thedetergent supply device 18 and thetub 11 so that the water, passed through thedetergent supply device 18, is supplied to thetub 11, and awater supply nozzle 26 is installed at the outlet of thewater supply pipe 25. The above structure causes the water supplied to the inside of thetub 11 to pass through thedetergent supply device 18, thereby causing the detergent in thedetergent supply device 18 to be supplied to thetub 11. -
FIG. 2 is a block diagram of an apparatus for controlling the supply of water of the washing machine in accordance with an embodiment of the present invention. The apparatus comprises asignal input unit 100, a waterlevel sensing unit 110, atemperature sensing unit 120, acontrol unit 130, and anoperating unit 140. - The
signal input unit 100 serves to input operating data, such as a washing course, a washing temperature, a dehydration speed, and whether or not a rinsing operation is added, which are selected by a user, to thecontrol unit 130. The waterlevel sensing unit 110 serves to sense the level of the washing water supplied to thetub 11, and thetemperature sensing unit 120 serves to sense the temperature of the washing water supplied to in thetub 11. - The
control unit 130 is a microcomputer for controlling the operation of the cold andwarm water valves signal input unit 100 and the values sensed by the waterlevel sensing unit 110 and thetemperature sensing unit 120. Thecontrol unit 130 includes a timer for counting operating times of the cold andwarm water valves - The
control unit 130 first supplies cold water to soak the laundry, thereby preventing the laundry from degenerating when warm water at a high temperature is supplied to the laundry. Thecontrol unit 130 secondarily supplies cold water and warm water simultaneously to soak the laundry, thereby causing the supplied water to have a temperature between the temperature of the cold water and the temperature of the warm water Thecontrol unit 130 thirdly supplies cold water and warm water in an alternating fashion, thereby controlling the washing temperature. - The
operating unit 140 drives themotor 15, thecold water valve 23, thewarm water valve 24, thedrainage valve 19 b and thedrainage pump 19 c according to a driving control signal of thecontrol unit 130. - Hereinafter, the operation and function of the above washing machine of the present invention and a method for controlling the supply of water of the washing machine will be described.
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FIG. 3 is a flow chart illustrating a method for controlling the supply of water of the washing machine in accordance with the present invention. - When a user puts laundry into the
rotary drum 12 and selects the operating data, such as a washing course, a washing temperature, a dehydration speed, and whether or not a rinsing operation is added, according to materials of the laundry, the operating data selected by the user are inputted to thecontrol unit 130 through the signal input unit 100 (S100). - Then, in order to prevent contaminants of the laundry from degenerating due to the warm water of a high temperature (approximately 57.2° C.) in the first supply of cold water, the
control unit 130 drives theoperating unit 140 to open thecold water valve 23 so that cold water (at a temperature of approximately 15.6° C.) is supplied to the inside of thetub 11 through the cold water supply pipe 21 (S110). - In the above supply of cold water, the
control unit 130 drives theoperating unit 140 to drive themotor 15 so that therotary drum 12 is rotated at a predetermined number of revolutions per minute and a predetermined operation ratio (on/off ratio), thereby causing the laundry to soak in cold water by force for lifting the laundry in therotary drum 12 and dropping the laundry. - Here, the turning-on time of the
cold water valve 23 is checked, and it is determined whether or not the turning-on time of thecold water valve 23 exceeds a predetermined time (time set by the quantity of the laundry for preventing the contaminants of the laundry from degenerating, due to the supply of warm water of the high temperature, by soaking the laundry in the first-supplied cold water) (S120). - When the turning-on time of the
cold water valve 23 exceeds the predetermined time, in order to perform the second simultaneous supply of the cold and warm water to soak the laundry, thecontrol unit 130 drives theoperating unit 140 to simultaneously open thecold water valve 23 and thewarm water valve 24 so that cold water and warm water are simultaneously supplied to the inside of thetub 12 through the cold and warmwater supply pipes 21 and 22 (S130). - In the above simultaneous supply of cold and warm water, in order to sense the level of the washing water supplied to the
tub 11, the level of the washing water is sensed, and it is determined whether or not the level of the washing water reaches a predetermined level (level set by the quantity of the laundry for allowing the supplied water to have a temperature half of a predetermined temperature by soaking the laundry in the simultaneously supplied-cold and warm water) (S140). - When the level of the washing water reaches the predetermined level, in order to adjust the washing temperature by alternating the supply of cold and warm water, the
control unit 130 drives theoperating unit 140 to alternate the opening and closing of thecold water valve 23 and thewarm water valve 24 so that cold water and warm water are alternately supplied to the inside of thetub 11 through the cold and warmwater supply pipes 21 and 22 (S150). - In the above alternating supply of cold and warm water, the temperature of the washing water supplied to the
tub 11 is sensed, and it is determined whether or not the sensed temperature of the washing water reaches a predetermined temperature (the washing temperature) (S160). - When the sensed temperature of the washing water reaches the predetermined temperature, the
control unit 130 commands theoperating unit 140 to close thecold water valve 23 and thewarm water valve 24 so that the supply of the water to the cold and warmwater supply pipes - After the supply of the water is stopped, the
control unit 130 drives theoperating unit 140 to drive themotor 15 so that therotary drum 12 is rotated at a low speed and other remaining operations (washing, rinsing, and dehydrating operations) are performed according to the selected washing course (S180). - As apparent from the above description, the present invention provides a washing machine for supplying cold water to laundry for sufficiently soaking the laundry and then supplying warm water at a high temperature to the laundry, and a method for controlling the supply of water of the washing machine, thereby preventing contaminants from degenerating, and preventing the laundry made of a material having poor heat resistance from being stained and being damaged by warm water of the high temperature directly contacting the laundry when the laundry is washed.
- Although an embodiment of the invention has been shown and described, it would be appreciated by those skilled in the art that changes may be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (19)
1. A method for controlling the supply of water of a washing machine comprising:
determining whether or not a water supply operation is selected;
supplying cold water to soak laundry when it is determined that the water supply operation is selected; and
supplying warm water after the soaking of the laundry in the cold water to prevent contaminants of the laundry from degenerating.
2. The method as set forth in claim 1 , wherein the water supply operation is a water supply step of a washing operation.
3. The method as set forth in claim 1 , wherein cold water is supplied for a predetermined time.
4. The method as set forth in claim 3 , wherein the predetermined time is set according to the quantity of the laundry.
5. The method as set forth in claim 1 , wherein cold and warm water is supplied, after the soaking of the laundry in cold water, so that the level of the supplied water reaches a predetermined level.
6. The method as set forth in claim 5 , wherein the predetermined level is a quantity of the washing water set according to the quantity of the laundry.
7. The method as set forth in claim 1 , wherein cold and warm water is supplied, after the soaking of the laundry in the water, so that the temperature of the supplied water reaches a predetermined temperature.
8. The method as set forth in claim 7 , wherein the predetermined temperature is a temperature set by a user.
9. A method for controlling the supply of water of a washing machine having a rotary drum for containing laundry comprising:
determining whether or not a water supply operation is selected;
supplying cold water to soak the laundry when it is determined that the water supply operation is selected; and
supplying cold water and warm water, after the soaking of the laundry in cold water, to control the level and the washing temperature of the supplied water.
10. The method as set forth in claim 9 , wherein a motor drives to rotate the rotary drum during the soaking of the laundry in cold water.
11. The method as set forth in claim 9 , wherein the level and the washing temperature of the supplied water are controlled by simultaneously or alternately supplying warm water and cold water.
12. A method for controlling the supply of water of a washing machine, in which cold water or warm water is supplied directly to laundry, comprising:
determining whether or not a water supply operation is selected;
supplying cold water for a designated time to soak the laundry when it is determined that the water supply operation is selected;
simultaneously supplying cold water and warm water, after the soaking of the laundry in cold water, so that the level of the supplied water reaches a predetermined level; and
alternately supplying cold water and warm water, after the soaking of the laundry in cold water, so that the temperature of the supplied water reaches a predetermined washing temperature.
13. A washing machine having a rotary drum for containing laundry comprising:
a water supply unit for supplying cold water or warm water directly to the laundry; and
a control unit for controlling supply of water, wherein when a water supply operation is selected, cold water is first supplied to the rotary drum to soak the laundry and warm water is then supplied to the rotary drum.
14. The washing machine as set forth in claim 13 , wherein the control of the supply of the water is performed during a washing operation.
15. The washing machine as set forth in claim 13 , wherein the control unit controls the water supply unit so that cold and warm water is simultaneously supplied to the rotary drum after the soaking of the laundry in cold water and the level of the supplied water reaches a predetermined level.
16. The washing machine as set forth in claim 13 , wherein the control unit controls the water supply unit so that cold water and warm water are alternately supplied to the rotary drum after the soaking of the laundry in the water and the temperature of the supplied water reaches a predetermined temperature.
17. The washing machine as set forth in claim 13 , wherein the water supply unit comprises:
a cold wafer valve opens or closes based on a command from the operating unit; and
a hot water valve that opens or closes based on a command from the operating unit.
18. The washing machine as set forth in claim 17 , wherein the water supply unit further comprises a detergent supply device.
19. The washing machine as set forth in claim 13 , wherein the control unit comprises a read-only memory for storing data associated with predetermined times for supplying hot and cold water and predetermined water levels according to a quantity of laundry.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050001357A KR20060081043A (en) | 2005-01-06 | 2005-01-06 | Washing machine and water supply control method thereof |
KR2005-1357 | 2005-01-06 |
Publications (1)
Publication Number | Publication Date |
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US20060143836A1 true US20060143836A1 (en) | 2006-07-06 |
Family
ID=36088545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/188,796 Abandoned US20060143836A1 (en) | 2005-01-06 | 2005-07-26 | Washing machine and method for controlling supply of water thereof |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060143836A1 (en) |
EP (1) | EP1679398A1 (en) |
KR (1) | KR20060081043A (en) |
TW (1) | TW200624625A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103348051A (en) * | 2010-11-29 | 2013-10-09 | 伊莱克斯家用产品股份有限公司 | Method for controlling the intake of washing liquid in laundry washing machine, and laundry washing machine actuating that method |
Families Citing this family (5)
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KR101460540B1 (en) * | 2008-07-21 | 2014-11-12 | 삼성전자 주식회사 | Method to control of washing machine |
ES2376127B1 (en) * | 2009-12-03 | 2013-02-04 | BSH Electrodomésticos España S.A. | METHOD FOR CONTROLLING WATER FILLING OF A WASHING CUBE OF A WASHING MACHINE AND WASHING MACHINE THAT EXECUTES SUCH METHOD. |
US20120304394A1 (en) * | 2011-05-31 | 2012-12-06 | Fariborz Dawudian | Method and Apparatus for Cleaning Delicate Textiles |
CN105040354A (en) * | 2015-07-23 | 2015-11-11 | 韦振彬 | Washing method of roller washing machine |
KR102477943B1 (en) * | 2017-03-08 | 2022-12-14 | 엘지전자 주식회사 | Method for controlling washing machine |
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MY138987A (en) * | 2002-03-25 | 2009-08-28 | Lg Electronics Inc | Washing method of washing machine |
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- 2005-01-06 KR KR1020050001357A patent/KR20060081043A/en not_active Application Discontinuation
- 2005-07-15 TW TW094124069A patent/TW200624625A/en unknown
- 2005-07-26 US US11/188,796 patent/US20060143836A1/en not_active Abandoned
- 2005-07-28 EP EP05254707A patent/EP1679398A1/en not_active Withdrawn
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US2677950A (en) * | 1945-02-23 | 1954-05-11 | Peyton W Douglas | Machine for cleaning textile fabric articles |
US3063785A (en) * | 1959-12-14 | 1962-11-13 | Clayton E Foreman | Process for cleaning athletic uniforms |
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CN103348051A (en) * | 2010-11-29 | 2013-10-09 | 伊莱克斯家用产品股份有限公司 | Method for controlling the intake of washing liquid in laundry washing machine, and laundry washing machine actuating that method |
US20140123400A1 (en) * | 2010-11-29 | 2014-05-08 | Electrolux Home Products Corporation N.V. | Method for Controlling the Intake of Washing Liquid in a Laundry Washing Machine, and Laundry Washing Machine Actuating that Method |
US11028522B2 (en) | 2010-11-29 | 2021-06-08 | Electrolux Home Products Corporation N.V. | Method for controlling the intake of washing liquid in a laundry washing machine, and laundry washing machine actuating that method |
Also Published As
Publication number | Publication date |
---|---|
KR20060081043A (en) | 2006-07-12 |
EP1679398A1 (en) | 2006-07-12 |
TW200624625A (en) | 2006-07-16 |
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