US20070220683A1 - Drum type washing machine and drying method thereof - Google Patents

Drum type washing machine and drying method thereof Download PDF

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Publication number
US20070220683A1
US20070220683A1 US11/723,475 US72347507A US2007220683A1 US 20070220683 A1 US20070220683 A1 US 20070220683A1 US 72347507 A US72347507 A US 72347507A US 2007220683 A1 US2007220683 A1 US 2007220683A1
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Prior art keywords
temperature
drying
drum
tub
washing machine
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US11/723,475
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English (en)
Inventor
Chang Hoo Kim
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WiniaDaewoo Co Ltd
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Daewoo Electronics Co Ltd
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Assigned to DAEWOO ELECTRONICS CORPORATION reassignment DAEWOO ELECTRONICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, CHANG HOO
Publication of US20070220683A1 publication Critical patent/US20070220683A1/en
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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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/46—Control of the operating time
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
    • 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
    • D06F2103/26—Imbalance; Noise level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2105/28—Electric heating
    • 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
    • D06F2105/30—Blowers
    • 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
    • D06F2105/36—Condensing arrangements, e.g. control of water injection therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • 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
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a drum type washing machine, and more particularly, to a drum type washing machine having a short time for drying laundry and a drying method thereof.
  • the humidity, contained in the air due to moisture separated from the laundry is condensed by condensing water introduced into the condenser (S 40 ) and is exhausted out of the drum type washing machine (S 50 ).
  • the conventional drying method can increase drying efficiency of the laundry and it is possible to prevent undesired power consumption and excessive use of condensing water.
  • the drying cycle may be finished before the drying of laundry is not yet finished, resulting in incomplete drying of the laundry. Otherwise, the drying cycle is continued even after the drying is finished so that the laundry may be damaged.
  • the conventional drying method dries the laundry at low temperature and as a result, it takes a long time to dry laundry. Moreover, the laundry may be incompletely dried so that the drying efficiency may be deteriorated.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a drying method of a drum type washing machine of controlling temperature of air supplied into a drum, RPM of the drum, and switching a drying heater on or off according to the temperature of air to reduce time for drying laundry and a drum type washing machine using the same.
  • the drum type washing machine further includes a second temperature sensor for detecting temperature in the tub and outputting the detected temperature to the microcomputer, wherein the second temperature sensor is installed between the tub and the drum to control the RPM of the drum motor based on the temperature detected by the second temperature sensor.
  • step (3) a slope with respect to temperature change in the tub, which is detected by the second temperature sensor for detecting the inner temperature of the tub, is estimated, and when the detected slope is equal to or greater than a predetermined reference slope, the step (3) is carried out.
  • the first motor driving range is 1000 RPM to 1200 RPM
  • the second motor driving range is 40 RPM to 60 RPM
  • the first temperature range is 110 degrees centigrade to 120 degrees centigrade
  • the second temperature range is 95 degrees centigrade to 105 degrees centigrade.
  • FIG. 1 is a flowchart illustrating a drying cycle of a conventional drum type washing machine
  • FIG. 3 is a block diagram illustrating the drum type washing machine according to the preferred embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a drying cycle of a drum type washing machine according to a first preferred embodiment of the present invention
  • FIG. 7 is a flowchart illustrating a drying cycle of a drum type washing machine according to a second preferred embodiment of the present invention.
  • FIGS. 8 , 9 , and 10 are flowcharts illustrating respective drying cycles in FIG. 6 ;
  • FIG. 11 is a graph illustrating the relation between temperature and time during the drying cycle of the drum type washing machine according to the second preferred embodiment of the present invention.
  • the drum type washing machine 100 washes laundry by rotating a cylindrical drum within a washing tub and by dropping the laundry from the upper side of the drum to the lower side of the drum.
  • the drum type washing machine 100 includes a housing 111 for forming an external appearance of the drum type washing machine 100 , a tub 131 installed in the housing 111 , a drum 130 rotated within the tub 131 to serve as the washing tub, a drum motor installed in the rear side of the drum 130 to rotate the drum 130 , a drier 120 for drying the laundry, and a condenser 118 for removing moisture contained in internal air.
  • a washing water supplying pipe 105 is provided to supply washing water from the exterior, and the washing water that is supplied through the washing water supplying pipe 105 is supplied into the tub 131 via a detergent container 106 for accommodating detergent.
  • an exhaust pump 151 and an exhaust pipe 152 are provided to exhaust the washing water, used during the washing process, to the exterior.
  • a door 102 is installed in the front side of the drum type washing machine 100 .
  • the front side means the left side in FIG. 2 and the rear side means the right side in FIG. 2 .
  • a plurality of holes is formed such that the washing water and air may flow therethrough. Through the holes formed in the drum 130 , air in the drum 130 flows into a space formed between the drum 130 and the tub 131 .
  • the drying heater 122 is installed in the drying duct 112 between the blower 121 and an air introducing port 123 .
  • an electric heater for generating heat using electric current is used, and temperature of the drying heater 122 is controlled by a thermistor 125 that is installed in the air discharging part 114 .
  • a second temperature sensor is installed between the tub 131 and the drum 130 to detect washing temperature.
  • the second temperature sensor 132 detects temperature of air in the tub 131 and outputs detected data to the microcomputer 160 .
  • the microcomputer 160 performs the drying cycle according to the detected data inputted from the second temperature sensor 132 .
  • the drum type washing machine 100 includes an air discharging part 114 for discharging humid air to the exterior.
  • a side of the air discharging part 114 is communicated with the tub 131 and the other side 117 a of the air discharging part 114 is communicated with the exterior.
  • an extension part 117 where a fan (not shown) driven by a motor (not shown) is installed and a filter 119 is installed in the extension part 117 .
  • the microcomputer 160 of the drum type washing machine determines whether or not temperature of air in the tub 131 that is inputted from the second temperature sensor 132 is equal to or greater than a reference temperature when the user selects the drying mode through the key input section 170 of the drum type washing machine 100 .
  • the microcomputer 160 performs the corresponding drying process according to whether or not the inputted air temperature is equal to or greater than the reference temperature, and controls the drum motor 140 and the drier 120 to perform the drying process of the present invention during respective drying processes.
  • the drying method of the drum type washing machine is roughly divided into a main drying step and an auxiliary drying step.
  • the preferred embodiments of the present invention will be described in detail according to whether the drum motor 140 is rotated at high speed within a first motor driving range and the drying heater 122 supplies heat simultaneously or for a time interval, based on an allowable current when the user selects the drying mode through the key input section 170 .
  • the allowable current in a case of rotating the drum motor 140 at high speed within the first motor driving range and supplying heat by the drying heater 122 simultaneously, the allowable current must be 15 A. However, in a case of rotating the drum motor 140 at high speed within the first motor driving range and supplying heat by the drying heater 122 for a time interval, 10 A is sufficient for the allowable current.
  • FIGS. 7 to 12 illustrate the second preferred embodiment of the present invention carried out by selecting the completely drying mode
  • FIG. 13 illustrates the third preferred embodiment of the present invention carried out by selecting the time drying mode
  • FIG. 14 illustrates the fourth preferred embodiment of the present invention of performing the auxiliary drying step and the main drying step according to a magnitude of a slope by estimating the slope with respect to temperature changes.
  • the first preferred embodiment of the present invention can be applied to the completely drying mode and the time drying mode like the second, third, and fourth preferred embodiments of the present invention.
  • FIG. 4 illustrates the completely drying mode, and the same description as that of the time drying mode will be omitted.
  • the drying method of a drum type washing machine is a method in which heat is not applied to the laundry when the drum motor 140 is driven with the first motor driving range, but in which heat is applied when the drum motor 140 is driven within a second motor driving range after that.
  • the user firstly selects the drying mode through the key input section 170 (S 710 ), and selects the completely drying mode of the drying modes, and then an eccentricity is measured (S 720 ).
  • the measured eccentricity is compared with a predetermined reference eccentricity. Whether the measured eccentricity is equal to or greater than the reference eccentricity is determined (S 730 ), and when the measured eccentricity is equal to or greater than the reference eccentricity, a detangling cycle is performed (S 735 ) to adjust the eccentricity.
  • the detangling cycle is not carried out and the second temperature sensor 132 detects temperature in the tub 131 (S 740 ) to output the detected data to the microcomputer 160 .
  • the microcomputer 160 determines whether or not the measured temperature in the tub 131 is equal to or greater than a reference temperature, preferably, 50 degrees centigrade, based on the detected data (S 750 ).
  • the second temperature sensor 132 detects the inner temperature of the tub 131 and the detected temperature is compared with the reference temperature such that the next processes are carried out, is to prevent the laundry from damage when air heated in the auxiliary drying step is supplied because the laundry is sufficiently heated when the inner temperature of the tub 131 is equal to or greater than the reference temperature, and to perform a power failure compensation when the electricity is cut off during the drying cycle.
  • auxiliary drying step is not carried out and the processes after that, that is, the supply of the condensing water and the exhaust of water are carried out.
  • the drum motor 140 is driven within a first motor driving range, 1000 RPM to 1200 RPM and a second motor driving range, 40 RPM to 60 RPM for a time interval, and when the drum motor 140 is driven within the second motor driving range, the drying heater 122 and the blower fan are driven within a temperature range where temperature detected by the first temperature sensor 151 is within the first temperature range.
  • the first motor driving range may be variously determined according to models of the drum type washing machine.
  • the first motor driving range is increased as the capacity of the drum type washing machine is increased.
  • the drum motor 140 is driven at a maximal RPM allowed in the corresponding drum type washing machine.
  • the drum motor 140 is driven such that the inner temperature of the tub 131 is maintained within the second motor driving range and the drying heater 122 and the blower fan are driven (S 765 ).
  • the main drying step is performed (S 780 ).
  • the drum motor 140 is driven within the first motor driving range (S 781 ) and whether or not the first predetermined time, 10 minutes, has elapsed is determined (S 782 ) such that the drum motor 140 is driven within the first motor driving range until the first predetermined time has elapsed.
  • the drum motor 140 is driven within the second motor driving range and the blower fan and the drying heater 122 are driven such that the temperature detected by the first temperature sensor 151 is maintained within the second temperature range (S 783 ).
  • FIG. 7 is a flowchart illustrating a drying cycle of a drum type washing machine according to a second preferred embodiment of the present invention
  • FIGS. 8 , 9 , and 10 are flowcharts illustrating respective drying cycles in FIG. 7
  • FIG. 11 is a graph illustrating the relation between temperature and time during the drying cycle of the drum type washing machine according to the second preferred embodiment of the present invention
  • FIG. 12 is a graph illustrating the relation between temperature and time with respect to the quantity of laundry during the drying cycle of the drum type washing machine according to the second preferred embodiment of the present invention.
  • the drying method of a drum type washing machine includes the steps of selecting the drying mode through the key input section 170 by the user (S 110 ), and measuring the eccentricity when the user selects the completely drying mode of the drying modes (S 120 ).
  • the measured eccentricity is compared with the predetermined eccentricity and whether or not the measured eccentricity is equal to or greater than the reference eccentricity is determined (S 130 ).
  • the detangling process is carried out (S 132 ) to adjust the eccentricity.
  • the second temperature sensor 132 detects the inner temperature of the tub 131 (S 140 ) and outputs the detected data to the microcomputer 160 .
  • the microcomputer 160 determines whether the detected data, that is, the inner temperature of the tub 131 is equal to or greater than the reference temperature, preferably, 50 degrees centigrade (S 150 ).
  • the second temperature sensor 132 detects the inner temperature of the tub 131 and the detected temperature is compared with the reference temperature such that the next processes are carried out based on the compared result, is to prevent the laundry from damage when air heated in the auxiliary drying step is supplied because the laundry is sufficiently heated when the inner temperature of the tub 131 is equal to or greater than the reference temperature, and to perform a power failure compensation when the electricity is cut off during the drying cycle.
  • the first auxiliary drying process is not carried out and the processes after that, that is, the supply of the condensing water and the exhaust of water are carried out.
  • the drum motor 140 is driven within the first motor driving range, preferably, within 1000 RPM to 1200 RPM and the drying heater 122 and the blower 121 are driven (S 161 ).
  • the drum motor 140 starts to drive within the first motor driving range and as time is simultaneously counted.
  • the heated air is supplied while the drum motor 140 rotates at high speed, the washing water is dehydrated from the laundry which is heated at temperature where moisture is easily separated.
  • the first temperature sensor 115 detects temperature of air heated by the drying heater 122 and outputs the detected temperature to the microcomputer 160 .
  • the microcomputer 160 controls the temperature of air heated by the drying heater 122 so as to maintain it within the predetermined first temperature range T 2 to T 1 .
  • the first temperature sensor 115 detects the temperature of air heated by the drying heater 122 and continues to output the detected temperature of air to the microcomputer 160 .
  • the microcomputer 160 determines whether or not the detected data, that is, the detected temperature inputted from the first temperature sensor 115 is greater than the predetermined temperature T 1 (S 163 ).
  • the microcomputer 160 stops the drying heater 122 (S 165 ) and determines whether the detected data is equal to or less than the second predetermined temperature T 2 after stopping the drying heater 122 (S 167 ).
  • the microcomputer 160 repeats the process of driving the drying heater 122 (S 169 ).
  • temperature of air supplied to the tub 131 is maintained within the first temperature range T 2 to T 1 , that is, 110 degrees centigrade to 120 degrees centigrade.
  • the first auxiliary drying process is continued until the predetermined time t 1 has elapsed.
  • the first auxiliary drying process (S 160 ) is finished or temperature of the tub 131 detected by the second temperature sensor 132 is less than the reference temperature, the first auxiliary drying process is not carried out and the process of detecting the quantity of laundry (S 170 ) is carried out.
  • the expected remaining time of the drying cycle corresponding to the detected quantity of laundry is estimated and displayed on the display 180 (S 180 ).
  • the drum motor 140 rotates at low speed and the heated air is supplied, the washing water is separated from the laundry and simultaneously temperature is increased to a degree where the moisture is easily extracted from the humid laundry.
  • the first auxiliary drying process is continued until the predetermined time t 2 has elapsed.
  • a predetermined time t 2 preferably, 20 minutes has elapsed
  • the reason why the predetermined time t 2 is set to 20 minutes and time until the second auxiliary drying process is finished is set to 40 minutes, is that it takes 40 minutes until the second auxiliary drying process is finished according to a curve of a reference temperature experimentally performed with respect to a general quantity of 10 Kg of laundry.
  • the determined time t 2 can be variously determined.
  • the main drying step (S 210 ) is carried out.
  • the drum motor 140 is driven within the second motor driving range, preferably, 40 RPM to 60 RPM, and the drying heater 122 and the blower 121 are driven (S 211 ).
  • the first temperature sensor 115 detects the temperature of air heated by the drying heater 122 and continues to output the detected temperature of air to the microcomputer 160 .
  • the microcomputer 160 determines whether or not the detected data, that is, the detected temperature inputted from the first temperature sensor 115 is greater than the predetermined temperature T 3 , that is, 105 degrees centigrade (S 213 ).
  • the microcomputer 160 stops the drying heater 122 (S 215 ) and determines whether the detected data is equal to or less than the predetermined temperature T 4 , that is, 95 degrees centigrade after stopping the drying heater 122 (S 217 ).
  • the microcomputer 160 repeats the process of driving the drying heater 122 .
  • temperature of air supplied to the tub 131 is maintained within 95 degrees centigrade to 105 degrees centigrade.
  • the drying method according to this preferred embodiment of the present invention may be carried out in various ways according to the quantity of laundry. As described above, according to the quantity of laundry, time when the second auxiliary drying process is finished is different from time when the main drying step is started. The slopes with respect to the temperature change during the first and second auxiliary drying processes are different from each other.
  • FIG. 13 is a flowchart illustrating a drying cycle of a drum type washing machine according to the third preferred embodiment of the present invention.
  • the first auxiliary drying process (S 360 ) is not carried out but the processes after the first auxiliary drying process (S 360 ) are carried out.
  • the drum motor 140 is driven within the second motor driving range of 40 RPM to 60 RPM and temperature of air to be supplied to the tub 131 is maintained within the second temperature range T 4 to T 3 , preferably, 95 degrees centigrade to 105 degrees centigrade so that the main drying step (S 390 ) of drying laundry is carried out according to the time drying mode until the drying time has elapsed (S 400 ).
  • the drying time is set and the drying process is carried out only for the drying time.
  • the process of obtaining the expected remaining time of the drying cycle by detecting the quantity of laundry is not carried out unlike the second preferred embodiment of the present invention, and it is not determined whether or not the laundry is completely dried. Therefore, when the predetermined drying time has elapsed, the drying process is finished by force.
  • a drying method according to a fourth preferred embodiment of the present invention will be described with reference to FIG. 14 .
  • FIG. 14 is a flowchart illustrating a drying cycle of a drum type washing machine according to the fourth preferred embodiment of the present invention.
  • the eccentricity is measured (S 520 ) and it is determined whether or not the measured eccentricity is equal to or greater than the reference eccentricity (S 530 ).
  • the detangling cycle is carried out (S 532 ).
  • the second temperature sensor 132 detects temperature of air in the tub 131 (S 540 ) and outputs the detected temperature.
  • the first auxiliary drying process is carried out such that the drum motor 140 is driven within the first motor driving range, that is, at high speed of 1000 RPM to 1200 RPM and temperature of air to be supplied to the tub 131 is maintained within the first temperature range T 2 to T 1 , preferably, 110 degrees centigrade to 120 degrees centigrade (S 560 ).
  • the slope with respect to the temperature change detected by the second temperature sensor 132 is greater than a predetermined reference slope (S 570 ). When the slope is equal to or greater than the reference slope, the first auxiliary drying process is finished and the next processes are carried out.
  • the second auxiliary drying process is carried out as a next process (S 600 ).
  • the condensing water is supplied through the condensing water supplying pipe 113 to remove moisture contained in air during the condensing process, the condensed water is exhausted to the exterior through the exhaust pipe 151 via the lower side of the tub 131 by performing the supply of condensing water and the exhaust of water (S 620 ).
  • the main drying step (S 630 ) is carried out.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
US11/723,475 2006-03-24 2007-03-20 Drum type washing machine and drying method thereof Abandoned US20070220683A1 (en)

Applications Claiming Priority (2)

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KR1020060027154A KR100692582B1 (ko) 2006-03-24 2006-03-24 드럼 세탁기 및 드럼 세탁기 건조방법
KR10-2006-27154 2006-03-24

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US (1) US20070220683A1 (ja)
EP (1) EP2007941A4 (ja)
JP (1) JP2009531124A (ja)
KR (1) KR100692582B1 (ja)
CN (1) CN101410565A (ja)
WO (1) WO2007111413A1 (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060101589A1 (en) * 2004-11-12 2006-05-18 Lg Electronics Inc. Washing machine combined with dryer and controlling method thereof
US20070289607A1 (en) * 2006-06-19 2007-12-20 Samsung Electronics Co., Ltd. Washing machine and washing control method of the same
US20100251777A1 (en) * 2007-11-28 2010-10-07 Nobuo Komoto Washing/drying machine
US7941937B2 (en) * 2002-11-26 2011-05-17 Lg Electronics Inc. Laundry dryer control method
US7975400B2 (en) * 2002-12-20 2011-07-12 Bsh Bosch Und Siemens Hausgeraete Gmbh Device for determining the conductance of laundry, dryers and method for preventing deposits on electrodes
US8015726B2 (en) * 2005-06-23 2011-09-13 Whirlpool Corporation Automatic clothes dryer
US20150059202A1 (en) * 2013-09-03 2015-03-05 Lg Electronics Inc. Laundry treatment apparatus and control method thereof
US20190169785A1 (en) * 2017-12-01 2019-06-06 Lg Electronics Inc. Dryer and method of controlling the same
US11427947B2 (en) * 2018-02-23 2022-08-30 Lg Electronics Inc. Washing machine and control method of washing machine

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101256146B1 (ko) 2007-12-27 2013-04-23 동부대우전자 주식회사 히터 내장형 흡기관을 구비한 건조기의 히터 제어방법
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CN106555320B (zh) * 2015-09-30 2021-11-16 青岛海尔洗衣机有限公司 一种干衣机及烘干方法
CN108004718B (zh) * 2016-10-27 2021-08-03 博西华电器（江苏）有限公司 衣物护理机及检测衣物护理机内衣物量的方法
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KR20210046300A (ko) * 2019-10-18 2021-04-28 엘지전자 주식회사 일체형 세탁물 처리장치 및 그 제어방법
KR20220120366A (ko) * 2021-02-23 2022-08-30 엘지전자 주식회사 의류처리장치 및 의류처리장치의 제어방법
CN114164610B (zh) * 2021-12-13 2022-12-09 珠海格力电器股份有限公司 一种洗衣机偏心检测方法、装置、存储介质及洗衣机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5887456A (en) * 1995-08-30 1999-03-30 Sharp Kabushiki Kaisha Drum type drying/washing machine
US20050044639A1 (en) * 2003-08-26 2005-03-03 Kwang Soo Kim Method of controlling drying cycle in washing machine
US20060048405A1 (en) * 2003-05-23 2006-03-09 Baek Seung M Drum type washing machine and dryer and method for automatic drying by using the same
US7380423B1 (en) * 2002-05-03 2008-06-03 Musone John P Combined washer dryer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3037063B2 (ja) * 1994-04-27 2000-04-24 三洋電機株式会社 衣類乾燥機
JPH07289793A (ja) * 1994-04-28 1995-11-07 Toshiba Corp 乾燥機
KR960010985A (ko) * 1994-09-28 1996-04-20 이헌조 의류건조기의 건조제어방법
KR19990048170A (ko) * 1997-12-08 1999-07-05 윤종용 건조기 및 그 제어방법
US6373032B1 (en) * 1999-06-10 2002-04-16 Maytag Corporation Apparatus and method for multiple temperature range control
KR100375095B1 (ko) * 2000-07-15 2003-03-08 삼성전자주식회사 의류건조기의 건조제어방법
KR100662760B1 (ko) * 2001-01-10 2007-01-02 주식회사 엘지이아이 의류 건조기의 회전 속도 제어 방법
KR100480929B1 (ko) * 2003-08-12 2005-04-07 엘지전자 주식회사 의류건조기의 건조 제어방법
US7421865B2 (en) * 2003-12-18 2008-09-09 Lg Electronics Inc. Washing machine with drying function and method of controlling the same
KR100546611B1 (ko) 2003-12-18 2006-01-26 엘지전자 주식회사 드럼 세탁기
KR100562555B1 (ko) 2004-07-09 2006-03-22 주식회사 대우일렉트로닉스 드럼세탁기의 건조제어 장치 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5887456A (en) * 1995-08-30 1999-03-30 Sharp Kabushiki Kaisha Drum type drying/washing machine
US6032494A (en) * 1995-08-30 2000-03-07 Sharp Kabushiki Kaisha Drum type drying/washing machine
US7380423B1 (en) * 2002-05-03 2008-06-03 Musone John P Combined washer dryer
US20060048405A1 (en) * 2003-05-23 2006-03-09 Baek Seung M Drum type washing machine and dryer and method for automatic drying by using the same
US20050044639A1 (en) * 2003-08-26 2005-03-03 Kwang Soo Kim Method of controlling drying cycle in washing machine

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7941937B2 (en) * 2002-11-26 2011-05-17 Lg Electronics Inc. Laundry dryer control method
US7975400B2 (en) * 2002-12-20 2011-07-12 Bsh Bosch Und Siemens Hausgeraete Gmbh Device for determining the conductance of laundry, dryers and method for preventing deposits on electrodes
US8286369B2 (en) 2002-12-20 2012-10-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Device for determining the conductance of laundry, dryers and method for preventing deposits on electrodes
US20060101589A1 (en) * 2004-11-12 2006-05-18 Lg Electronics Inc. Washing machine combined with dryer and controlling method thereof
US7520145B2 (en) * 2004-11-12 2009-04-21 Lg Electronics, Inc. Washing machine combined with dryer and controlling method thereof
US8015726B2 (en) * 2005-06-23 2011-09-13 Whirlpool Corporation Automatic clothes dryer
US20070289607A1 (en) * 2006-06-19 2007-12-20 Samsung Electronics Co., Ltd. Washing machine and washing control method of the same
US9045852B2 (en) * 2006-06-19 2015-06-02 Samsung Electronics Co., Ltd. Washing machine and washing control method of the same
US8511324B2 (en) * 2007-11-28 2013-08-20 Haier Group Corporation Washing/drying machine
US20100251777A1 (en) * 2007-11-28 2010-10-07 Nobuo Komoto Washing/drying machine
US20150059202A1 (en) * 2013-09-03 2015-03-05 Lg Electronics Inc. Laundry treatment apparatus and control method thereof
US9359715B2 (en) * 2013-09-03 2016-06-07 Lg Electornics Inc. Laundry treatment apparatus and control method thereof
US20190169785A1 (en) * 2017-12-01 2019-06-06 Lg Electronics Inc. Dryer and method of controlling the same
US10760203B2 (en) * 2017-12-01 2020-09-01 Lg Electronics Inc. Dryer and method of controlling the same
US11427947B2 (en) * 2018-02-23 2022-08-30 Lg Electronics Inc. Washing machine and control method of washing machine
US11840789B2 (en) 2018-02-23 2023-12-12 Lg Electronics Inc. Washing machine and control method of washing machine

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KR100692582B1 (ko) 2007-03-14
WO2007111413A1 (en) 2007-10-04

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