Clothing treatment device and method for controlling clothing treatment device

Abstract

The present invention relates to a clothing treatment device comprising a control panel, which includes a display part unit for displaying the running time of a washing course and a drying course, wherein the display part unit first displays the running time of the washing course after a drum is rotated, and the display parted running time of the washing course is changed to the running time of the drying course when a selection command for selecting the drying course is input into a selection unit.

Description

[Technical Field]

[0001] The present disclosure relates to a laundry treatment device and a method of controlling the same. More specifically, it relates to a laundry treatment device capable of supplying steam and hot air to laundry to perform a drying cycle including sterilization, wrinkle removal, deodorization, and drying, and a control method thereof.[Background Art]

[0002] Generally, a laundry treatment device refers to a device capable of performing one or more of washing, drying, or managing laundry. Here, the laundry treatment device may perform only the washing, drying, or management function, or may perform all the washing, drying, and management functions.

[0003] Such a laundry treatment device includes any course for washing, drying, or managing laundry, and the execution time of the course is calculated based on the weight of the laundry. For example, when the weight of the laundry is large, the execution time is set relatively long. When the weight of the laundry is small, the execution time is set relatively short.

[0004] FIG. 1 illustrates a method of performing a course by a conventional laundry treatment device (see, for example, Korean Patent Application Publication Nos. 10-2009-0077097 and 10-2008-0102611).

[0005] FIG. 1-(a) illustrates a control method in which a conventional laundry treatment device performs a course.

[0006] Referring to FIG. 1-(a), the conventional laundry treatment device may include a power supply step (S1) of supplying power to the laundry treatment device by turning on the power button, a selection step (S2) of selecting an appropriate course or option on the control panel of the laundry treatment device, and a start step (S3) of pressing a execution button to execute the course in which multiple options are set.

[0007] When the start step (S3) is performed, a door locking step (S4) may be performed to lock the door to the cabinet.

[0008] The conventional laundry treatment device performs a weight detection step (S5) of detecting the weight based on the applied electrical current while rotating the drum that accommodates the laundry. Once the weight of the laundry is calculated, the controller of the conventional laundry treatment device performs a time display step (S6) of displaying the expected execution time of the selected course to the user, and an execution step (S7) of automatically executing the course.

[0009] As a result, the weight detection step (S5) and the time display step (S6) of the conventional laundry treatment device are performed after the user has input the start step (S3) of executing the course. Therefore, the user is forced to input the execution of the course without receiving information about the weight of the laundry or the expected execution time.

[0010] Consequently, the user cannot actively control the execution time of the course or option, and the time display step (S6) can only provide simple information to the user as a service.

[0011] Further, when the execution time displayed in the time display step (S6) is not suitable for the user's current intention or situation, the user is not given the opportunity to actively take action by adding or removing laundry.

[0012] Also, in conventional laundry treatment devices, when the execution time of the selected course or option does not meet the intention, the user cannot cancel or change the course unless they actively take measures, such as turning off the power of the washing machine.

[0013] This inconvenience becomes more pronounced when remotely controlling the conventional laundry treatment device.

[0014] FIG. 1-(b) illustrates the rotation state of the drum when the conventional laundry treatment device senses weight.

[0015] Referring to FIG. 1-(b), the conventional laundry treatment device rotates the drum D in direction I for at least one full revolution to detect the weight of the laundry L.

[0016] Specifically, while rotating the drum D in direction I, the conventional laundry treatment device measures the current applied to or output from the driver that rotates the drum, thereby calculating the weight of the laundry L.

[0017] When the conventional laundry treatment device rotates the drum D to detect the weight, the laundry L on the bottom surface of the drum rises inside the drum D and falls in direction II due to gravity, colliding with the inner wall of the drum and affecting the current of the driver.

[0018] Therefore, in order to accurately detect the weight of the laundry L despite variations in the driver current, the conventional laundry treatment device must rotate the drum D continuously in direction I for at least one full revolution and align the applied or output current values, which is a limitation.

[0019] As a result, the time required for the conventional laundry treatment device to detect the weight of the laundry may inevitably exceed the time needed to rotate the drum continuously.

[0020] In addition, in conventional laundry treatment devices, because the time required for the weight detection step (S5) is set relatively long, the time display step (S6) of displaying the execution time of the course or option may not quickly provide information to the user.

[0021] Further, in conventional laundry treatment devices, weight detection is performed only after the user selects a course or option and the start step (S3) of pressing the execution button is performed.

[0022] As a result, the user cannot check the weight in advance to select a course or option, and by the time the weight was detected, the user has usually already left the laundry treatment device at the time the weight is detected.

[0023] Therefore, conventional laundry treatment devices have a fundamental problem in that the user cannot check or actively utilize information about the weight.

[0024] For a drying course, the execution time is set longer than that of the washing course because the moisture contained in the laundry must be evaporated. Further, in general, as the weight of the laundry increases, the amount of moisture contained in the laundry also proportionally increases. However, the performance of the laundry treatment device for evaporating moisture per unit time may be similar. Therefore, the difference in execution time according to the difference in weight of the laundry may be set to be much larger for the drying course than for the washing course. For example, when the difference in execution time between washing 1 kg and washing 3 kg of laundry in the washing course is about 1 unit, the difference in execution time between drying 1 kg of laundry and 3 kg of laundry in the drying course may be about 2 to 4 units.

[0025] Despite this fact, conventional laundry treatment devices set the method of detecting the weight of the laundry identically for both the drying and washing courses.

[0026] As a result, in conventional laundry treatment devices, the allowed deviation between the actual weight of the laundry and the detected weight of the laundry may cause unnecessary increases in drying time and higher energy consumption.

[0027] Further, when the same weight of the laundry is detected, conventional laundry treatment devices set the execution time of the drying course to be the same.

[0028] However, even when the detected weight of the laundry is the same, in some drying courses, the actual weight of the laundry may be low but with high moisture content, while in other drying courses, the actual weight of the laundry may be high but with low moisture content. Conventional laundry treatment devices set the execution time of the drying course based solely on the laundry weight without considering the moisture content, failing to completely dry the laundry or excessively drying and damaging the laundry.

[0029] In addition, in some conventional laundry treatment devices configured to perform both the washing and drying courses, the user cannot clearly recognize whether the display parted time corresponds to the execution time of the washing course or the execution time of the drying course.

[0030] Moreover, when the conventional laundry treatment device uniformly sets the display parted execution time in the washing and drying courses based on the weight of the laundry, the user may not be clearly notified of the execution time for each course.[Disclosure][Technical Problem]

[0031] An object of the present disclosure is to provide a laundry treatment device capable of detecting the weight of laundry more accurately when a drying course is performed than when a washing course is performed.

[0032] Another object of the present disclosure is to provide a laundry treatment device capable of accurately detecting whether the laundry is wet fabrics.

[0033] Another object of the present disclosure is to provide a laundry treatment device capable of more accurately detecting the moisture content of laundry.

[0034] Another object of the present disclosure is to provide a laundry treatment device capable of setting and displaying different execution times for the drying course even when the weight of the laundry is the same and the laundry is wet fabrics with different moisture content.[Technical Solution]

[0035] The objects of the present disclosure can be achieved by providing a laundry treatment device. The laundry treatment device may include a cabinet having a front opening, a door coupled to the cabinet to open and close the opening, a sensor provided in the cabinet to sense whether the door has closed the opening, a drum accommodated in the cabinet to accommodate laundry, a driver connected to the drum to rotate the drum, a controller configured to control the driver to sense a weight of the laundry and perform at least one of a washing course for washing the laundry and a drying course for drying the laundry, and a control panel including a power part configured to receive an input of a power-on command to supply power to one or more of the sensor, the driver, and the controller, a selection part configured to receive an input of a selection command to select one of the washing course and the drying course, a display part configured to display execution times of the washing course and the drying course.

[0036] The display part may be configured to display the execution time of the washing course first after the drum starts rotating, wherein the display part may change the display parted execution time of the washing course to the execution time of the drying course when the input of the selection command to select the drying course is received through the selection part.

[0037] The driver may rotate the drum when the input is received through the power part or when the door closes the opening, wherein the display part may display the execution time of the washing course after the drum stops rotating.

[0038] The display part may display the execution time of the washing course and the execution time of the drying course differently when the weight of the laundry accommodated in the drum changes.

[0039] The laundry treatment device may include a locker provided in the cabinet to lock the door to the cabinet such that the door closes the opening.

[0040] The display part may display the execution time of the washing course or the drying course while the locker leaves the door unlocked.

[0041] Based on that a total weight of the laundry accommodated in the drum remains the same and that moisture content of the laundry changes, the display part may display the execution time of the drying course differently.

[0042] The display part may display the execution time of the drying course after the drum rotates and stops two or more times.

[0043] Based on that the input is received through the power part or that the door closes the opening, the display part may display the execution time of the washing course after the drum rotates, wherein, based on that the input of the selection command to select the drying course is received through the selection part, the display part may display the execution time of the drying course after the drum rotates additionally.

[0044] Based on that the input is received through the power part or that the door closes the opening, the driver may rotate the drum less than one full revolution, wherein, based on that the input of the selection command to select the drying course is received through the selection part, the driver may rotate the drum less than one full revolution additionally.

[0045] The driver may rotate the drum such that the number of times of the drum rotates and stops after the selection part is the input is greater than the number of times of the drum rotates and stops after the power part is input or the door closes the opening.

[0046] The driver may rotate the drum such that at least one of a rotation angle or a rotation speed of the drum after the input of the selection command to select the drying course is received through the selection part is different from the at least one of the rotation angle or the rotation speed of the drum after the input is received through the power part or the door closes the opening.

[0047] . The driver may rotate the drum such that a rotation time of the drum after the selection part is input is shorter than a rotation time of the drum than after the power part is input or the door closes the opening.

[0048] The driver may rotate the drum such that a rotate time of of the drum after the selection part is input is longer than a rotate time of the drum than after the power part is input or the door closes the opening..

[0049] Based on that an amount of the laundry accommodated in the drum is greater than a reference amount, the driver may rotate the drum more than when the amount of the laundry accommodated in the drum is less than or equal to the reference amount, and the display part may display the execution time of the washing course or the drying course after the rotation of the drum is completed.

[0050] The driver may rotate the drum such that the number of times the drum rotates and stops when the amount of the laundry accommodated in the drum is greater than the reference amount is greater than when the amount of the laundry accommodated in the drum is less than the reference amount.[Advantageous Effects]

[0051] According to the present disclosure, laundry may be prevented from being over-dried or insufficiently dried during the drying course, and energy efficiency may be improved.

[0052] According to the present disclosure, the weight and condition of laundry may be detected more precisely in the drying course than in the washing course.

[0053] According to the present disclosure, device reliability may be improved by externally displaying the precise detection of the condition of laundry in the drying course.[Description of Drawings]

[0054] FIG. 1 illustrates a control method of a conventional laundry treatment device. FIG. 2 illustrates one embodiment of a laundry treatment device according to the present disclosure. FIG. 3 illustrates an embodiment of an internal structure of the laundry treatment device according to the present disclosure that is provided as a washing machine. FIG. 4 illustrates an embodiment of an internal structure of the laundry treatment device according to the present disclosure that is provided as a dryer. FIG. 5 illustrates an embodiment of a control panel according to the present disclosure. FIG. 6 illustrates the laundry treatment device according to the present disclosure provided as a tower type (hereinafter, a wish tower) in which a washing machine and a dryer are stacked. FIG. 7 illustrates an embodiment of the control panel provided as a shared panel according to the present disclosure. FIG. 8 illustrates another embodiment of the laundry treatment device according to the present disclosure. FIG. 9 illustrates an embodiment of an internal structure of an integrated device 4. FIG. 10 illustrates an embodiment of the structure of an integrated panel. FIG. 11 illustrates the laundry treatment device according to the present disclosure provided as a mini device. FIG. 12 illustrates an embodiment of the internal structure of the laundry treatment device according to the present disclosure provided as a mini device. FIG. 13 illustrates an embodiment of a control panel when the laundry treatment device according to the present disclosure is provided as a mini device. FIG. 14 illustrates an embodiment of the laundry treatment device according to the present disclosure provided as a top-load type washing machine. FIG. 15 illustrates an embodiment of the internal structure of the laundry treatment device according to the present disclosure provided as a top-load type washing machine. FIG. 16 illustrates embodiments in which the laundry treatment device according to the present disclosure senses the weight of laundry. FIG. 17 illustrates an embodiment in which the laundry treatment device according to the present disclosure provided as a top-load type washing machine senses the weight of laundry. FIG. 18 illustrates an embodiment in which a controller of the laundry treatment device according to the present disclosure senses the weight of laundry through a driver. FIG. 19 illustrates an embodiment in which the laundry treatment device according to the present disclosure utilizes a weight detection method based on the above-described structure and method. FIG. 20 illustrates an embodiment in which weight detection is performed depending on whether a door is opened or closed. FIG. 21 illustrates another embodiment in which the laundry treatment device according to the present disclosure determines whether to additionally perform weight detection. FIG. 22 illustrates an embodiment of a control method of the laundry treatment device according to the present disclosure implemented on a washing panel or a drying panel. FIG. 23 illustrates an embodiment of a control method of the laundry treatment device according to the present disclosure implemented on a shared panel. FIG. 24 illustrates an embodiment of a control method of the laundry treatment device according to the present disclosure implemented on an integrated panel, and FIG. 25 illustrates an embodiment of the control method of the laundry treatment device according to the present disclosure implemented on a mini panel. FIG. 26 illustrates an embodiment of the control method applied when the laundry treatment device according to the present disclosure is provided as an integrated device. FIG. 27 illustrates an embodiment in which the laundry treatment device according to the present disclosure senses the weight of laundry in the drying course in a different manner from the washing course. FIG. 28 illustrates one embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry. FIG. 29 illustrates another embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry. FIG. 30 illustrates yet another embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry. FIG. 31 illustrates still another embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry. FIG. 32 illustrates an embodiment in which the laundry treatment device according to the present disclosure selectively performs precise detection according to the detected weight of laundry. FIG. 33 illustrates another embodiment in which the laundry treatment device according to the present disclosure selectively performs precise detection according to the detected weight of laundry. FIG. 34 illustrates an embodiment in which the laundry treatment device according to the present disclosure senses the moisture content of laundry. FIG. 35 illustrates that the laundry treatment device according to the present disclosure sets the execution time of the drying course differently according to the moisture content of laundry. [Best Mode]

[0055] Hereinafter, embodiments disclosed herein will be described in detail with reference to the accompanying drawings. In the present disclosure, the same or similar reference numerals are assigned to the same or similar elements in different embodiments, and each of them will be described only once. As used herein, the singular forms include plural forms unless the context clearly indicates otherwise. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments, the detailed description thereof will be omitted. In addition, it should be noted that the accompanying drawings are merely intended to provide a further understanding of the embodiments disclosed in the present disclosure and are not to be construed as limiting the technical ideas disclosed herein.

[0056] FIG. 2 illustrates one embodiment of a laundry treatment device according to the present disclosure.

[0057] The laundry treatment device of the present disclosure may include at least one of a washing machine 1 configured to wash laundry and a dryer 2 configured to dry laundry. For example, the laundry treatment device according to the present disclosure may include both the washing machine 1 and the dryer 2.

[0058] The washing machine 1 of the present disclosure may be provided as either a front-load type washing machine with an opening at the front for loading laundry or a top-load type washing machine with an opening at the top.

[0059] However, the dryer 2 of the present disclosure is preferably provided as a front-load type with an opening at the front, as laundry must rise from the bottom of the drum and be evenly exposed to hot air.

[0060] The laundry treatment device of the present disclosure may be provided as either the washing machine 1 or the dryer 2 alone, or may include both the washing machine 1 and the dryer 2. In any case, it may include a cabinet 10 defining the exterior and a drum 30 rotatably accommodated in the cabinet 10 to store laundry.

[0061] The cabinet 10 is provided with an opening communicating with the drum 30. Thus, laundry may be loaded into or removed from the drum 30.

[0062] The laundry treatment device of the present disclosure may further include a door 11 rotatably coupled to the cabinet 10. The door 11 may be configured to open or close the opening.

[0063] The laundry treatment device of the present disclosure may further include a sensor 13 configure to sense whether the door 11 has closed the opening. Thus, thse drum 30 may be prevented from rotating while the door 11 is open.

[0064] The sensor 13 may be provided in any form as long as it can sense whether the door 11 has opened or closed the opening. For example, the sensor 13 may include a magnet coupled to the door 11 and a Hall sensor coupled to the cabinet 10 to sense the magnet.

[0065] To prevent laundry or water inside the drum 30 from being ejected through the opening, the door 11 needs to be selectively fixed to the cabinet 10. To this end, the laundry treatment device according to the present disclosure may further include a locker 12 capable of selectively locking the door 11 to the cabinet 10.

[0066] The locker 12 may be provided in any form as long as it can selectively fix the door 11 to the cabinet 10 to prevent the door 11 from arbitrarily opening the opening. For example, the locker 12 may include a hook provided on the door 11 to be inserted into the cabinet 10, a fastening member provided on the cabinet 10 to selectively fasten the hook, and a fixing member configured to selectively maintain the coupling of the fastening member and the hook. The fixing member may include a solenoid and magnet, or may be configured as a mechanical structure such as a push button.

[0067] The laundry treatment device of the present disclosure is configured to perform a course for treating laundry. For example, when the laundry treatment device according to the present disclosure is provided as the washing machine 1, it may perform a washing course to remove foreign substances from the laundry. When provided as the dryer 2, it may perform a drying course to evaporate moisture from the laundry.

[0068] The laundry treatment device of the present disclosure may further include a control panel 100 configured to receive a command to perform the course or to display the status of performing the course or information necessary to perform the course.

[0069] The control panel 100 may include one or more of multiple buttons or a touch panel configured to receive user commands, a microphone configured to receive the user's voice, a camera or proximity sensor configured to receive the user's motion or state, a display part configured to display visual information to the user, and a speaker configured to provide auditory information to the user.

[0070] When the laundry treatment device according to the present disclosure is provided as a front-load type with an opening at the front of the cabinet, the control panel 100 may be disposed above the door 11 on the front of the cabinet 10, thereby ensuring accessibility and visibility.

[0071] When the laundry treatment device according to the present disclosure is provided as a top-load type with an opening at the top of the cabinet, the control panel 100 may be disposed in front of the door 11 on the top surface of the cabinet 10.

[0072] When the laundry treatment device according to the present disclosure is provided as the washing machine 1, the cabinet 10 may include a washing cabinet 10a defining the exterior of the washing machine 1, and the door 11 may include a washing door 11a arranged to open and close the opening formed in the washing cabinet 10a.

[0073] The sensor 13 may include a washing sensor 12a configured to sense whether the washing door 11a has opened or closed the opening.

[0074] The locker 13 may include a washing locker 13a configured to fix the washing door 11a to the washing cabinet 10a.

[0075] The drum 30 may include a washing drum 30a configured to accommodate laundry.

[0076] Additionally, the washing machine 1 of the present disclosure may further include a tub 20 accommodating the washing drum 30a and accommodated in the washing cabinet 10a to store water.

[0077] The control panel 100 may include a washing panel 100a configured to receive commands to control the washing machine 1 or to display information about the washing machine 1.

[0078] When the laundry treatment device according to the present disclosure is provided as the dryer 2, the cabinet 10 may include a drying cabinet 10b defining the exterior of the dryer 2, and the door 11 may include a drying door 11b arranged to open and close the opening formed in the drying cabinet 10b.

[0079] The sensor 13 may include a drying sensor 12b configured to sense whether the drying door 11b has opened or closed the opening.

[0080] The locker 13 may include a drying locker 13b configured to fix the drying door 11b to the drying cabinet 10b.

[0081] The drum 30 may include a drying drum 30b arranged to accommodate laundry.

[0082] Unlike the washing drum 30a, the drying drum 30b may not have through holes in an outer circumferential surface thereof.

[0083] The control panel 100 may include a drying panel 100b configured to receive commands to control the dryer 2 or to display information about the dryer 2.

[0084] FIG. 3 illustrates an embodiment of the internal structure of the laundry treatment device according to the present disclosure that is provided as the washing machine 1.

[0085] The laundry treatment device of the present disclosure may include a water supply part 50 arranged to supply water to the tub 20 and a drainage part 60 arranged to discharge water from the tub 20.

[0086] The water supply part 50 may include a water supply valve 51 coupled to the washing cabinet 10a and connected to an external water source to selectively supply water, a water supply pipe 52 extending from the water supply valve 51 to deliver water supplied from the external water source, and a detergent box 53 arranged to store detergent and to receive water supplied from the water supply pipe 52 and deliver the water to the tub 20.

[0087] The drainage part 60 may include a discharge pipe 61 connected to a lower portion of the tub 20 to discharge water from the tub 20, a drain pump 62 providing power to discharge the water supplied from the discharge pipe 61 to the outside of the washing cabinet 10a, and a drain pipe 63 extending from the drain pump 62 to the outside of the washing cabinet 10a to discharge the water.

[0088] The laundry treatment device of the present disclosure may further include a water level sensor 21 configured to sense the water level in the tub 20.

[0089] The water level sensor 21 may be provided in any form as long as it can sense the water level inside the tub 20. The water level sensor 21 may include a communication pipe communicating with the tub 20 and having a closed end, and a sensor disposed at an upper portion of the communication pipe to sense a change in pressure inside the communication pipe.

[0090] The washing machine 1 of the present disclosure may further include a support 70 arranged to support the tub 20 in the washing cabinet 10a.

[0091] The support 70 may include one or more of a suspension supporting the lower portion of the tub 20 and a spring supporting the upper portion of the tub 20.

[0092] The laundry treatment device of the present disclosure may include a driver 40 configured to rotate the drum 30.

[0093] The driver 40 may include a washing driver 40a configured to rotate the washing drum 30a.

[0094] The washing driver 40a may include a washing stator 41a coupled to the tub 20 to generate a rotating magnetic field, a washing rotor 42a rotated by the washing stator 41a, and a washing rotation shaft 43a coupled to the washing rotor 42a and extending through the tub 20 to be connected to the washing drum 30a.

[0095] The laundry treatment device of the present disclosure may further include a controller configured to control one or more of the driver 40, the water supply valve 51, the drain pump 62, the locker 13, and the water level sensor 21. The controller may be embedded in the control panel 100 or arranged separately from the control panel 100.

[0096] The controller may be configured to provide commands to control one or more of the driver 40, the water supply valve 51, the drain pump 62, the locker 13, and the water level sensor 21 to perform any washing course for washing laundry.

[0097] FIG. 4 illustrates an embodiment of the internal structure of the laundry treatment device according to the present disclosure that is provided as the dryer 2.

[0098] The drying cabinet 10c may further include a base disposed under the drum 30 to support the dryer 2. A heat supplier 90, described below, may be installed on the base.

[0099] The laundry treatment device of the present disclosure may include a heat supplier 90 arranged to supply air into the drum 30 to dry laundry accommodated in the drum 30.

[0100] For example, the heat supplier 90 may include a circulator 90b arranged to cause air in the drum 30 to circulate below the drum 30 and be resupplied.

[0101] The circulator 90b may include a circulation duct 91b arranged on the base, which is disposed under the drying drum 30b, to provide a flow path along which air discharged from the drying drum 30b is circulated, an evaporator 92b disposed in the circulation duct 91b to cool the air and condense moisture, a condenser 93b disposed downstream of the evaporator to heat the air, a compressor 94b configured to supply refrigerant to the condenser 93b to heat the air, an expansion valve configured to expand the refrigerant discharged from the condenser 93b to cool the same, and a circulation fan 96b disposed inside the circulation duct 91b to provide power for circulating the air.

[0102] The circulator 90b may further include a water collector 97b communicating with the circulation duct 91b to collect water condensed by the evaporator 92b, and a storage tank 98b arranged to store the water collected in the water collector 97b.

[0103] The laundry treatment device of the present disclosure may further include a support 70 rotatably supporting the drying drum 30b. The support 70 may include one or more rotating rollers 70b rotatably supporting one or more of the front and rear of the drying drum 30b.

[0104] The driver 40 of the laundry treatment device may further include a drying driver 40b configured to rotate the drying drum 30b.

[0105] The drying driver 40b may be seated on the base, on which the circulation duct 91b is installed, to rotate the drying drum 30b. In this case, the drying driver 40b may include a motor seated on the base, a pulley connected to the motor so as to rotate, and a belt connecting the pulley and the outer circumferential surface of the drum.

[0106] However, when the drying driver 40b is provided with a pulley / belt, it may be difficult to change the rotation speed and rotation direction of the drying drum 30b.

[0107] Therefore, in the laundry treatment device according to the present disclosure, the drying driver 40b may be disposed at the rear of the drying drum 30b, similar to the washing machine 1. That is, the drying driver 40b may include a drying stator 41b disposed at the rear of the drying drum 30b, a drying rotor 42b rotated by the drying stator, and a drying rotation shaft 43b coupled to the drying rotor 42b and extending to the rear of the drying drum 30b.

[0108] Accordingly, the drying driver 40b may freely change the rotation direction and rotation speed of the drying drum 30b.

[0109] The laundry treatment device of the present disclosure may further include a reducer 406b configured to reduce the rpm of the drying rotation shaft 43b and increase torque.

[0110] The reducer 406b may be disposed between the drying driver 40b and the drying drum 30b to transmit power generated by the drying driver 40b to the drying drum 30b.

[0111] The reducer 406b may be connected to and rotate with the drying rotation shaft 43b and include a complex gearbox connected to the drying drum 30b. Accordingly, the reducer 406b may reduce the rpm compared to the drying rotation shaft 43b but increase the torque delivered to the drying drum 30b.

[0112] As a result, while the drying drum 30b rotates, the laundry may rise and fall inside the drying drum 30b without sticking to the inner wall and be evenly exposed to the hot air supplied into the drying drum 30b.

[0113] The laundry treatment device of the present disclosure may further include a drying controller configured to control one or more of the driver 40, the heat supplier 90, the sensor 11, and the locker 12. The drying controller may be embedded in the control panel 100 or arranged separately from the control panel 100.

[0114] The drying controller may be configured to provide commands to control one or more of the driver 40, the heat supplier 90, the locker 13, and the sensor 11 to perform any drying course for drying the laundry.

[0115] FIG. 5 illustrates an embodiment of a control panel according to the present disclosure.

[0116] The control panel 100 of the laundry treatment device may include a power part 110 configured to receive a power command to supply power to all components of the laundry treatment device, a course selection part 130 configured to receive a selection command to select a course for treating laundry, an option selection part 140 configured to receive a course intensity, an execution time, and a selection command to select an option for adjusting or selecting one or more additional functions when performing the course, a execution part 120 configured to receive an execution command to execute the selected course and options, and a display part 150 configured to display one or more of the state of the course and options being performed, weight information about the laundry, or information displayed by the laundry treatment device.

[0117] The additional functions selectable through the option selection part 140 when performing the course may include one or more of steam supply, water temperature control, turbo shot by high-speed drum rotation, reservation setting for course execution, and mode switching to control another laundry treatment device or an external device.

[0118] The weight information about the laundry displayed on the display part 150 may include one or more of the weight of the laundry, the amount of detergent required for the weight of laundry to be treated, or the expected execution time of the course for treating the laundry.

[0119] The control panel 100 may be provided as any one of the washing panel 100a, the drying panel 100b, or other panels. However, in any form of the control panel 100, the functions of the power part 110, execution part 120, course selection part 130, option selection part 140, and display 150 may remain the same.

[0120] Hereinafter, the control panel 100 is illustrated as provided as the washing panel 100a. The washing panel 100a and the drying panel 100b may be configured to receive different commands or display different information, but may have the identical structure.

[0121] The washing panel 100a may include a rotary knob as the course selection part 130. The display part 150 may include a main display 151 disposed inside the course selection part 130 and a sub-display 152 disposed outside the course selection part 130.

[0122] The main display 151 may be circular and configured to display the course selected through the course selection part 130 by rotating the course selection part 130.

[0123] The main display 151 may also display sensed weight information about the laundry.

[0124] The main display 151 may include a screen displaying the selected course and weight information. As a result, the language displayed on the main display 151 may be freely changed according to settings. Therefore, it may be omitted to print the names or descriptions of the courses provided by the laundry treatment device on the washing panel 100a. In addition, the main display 151 may freely display the information intended to be conveyed by the controller in different languages, characters, images, figures, icons, or the like.

[0125] The course selection part 130 may be configured to rotate 360 degrees or more in both directions around the outer periphery of the main display 151, and the course displayed on the main display 151 may be set to change according to the rotation angle of the course selection part 130. The washing panel 100a may include an encoder configured to sense rotation of the course selection part 130 and determine the corresponding command according to the rotation angle, and a control panel configured to determine the content to be displayed on the main display 151 based on the encoder.

[0126] The option selection part 140 may be disposed outside the course selection part 130.

[0127] The option selection part 140 may be partitioned into areas for inputting commands to determine the intensity of each cycle constituting the course, such as a first option, a second option, and a third option, or to input additional functions for the course.

[0128] For example, the first, second, and third options may correspond to determining the intensity of washing, rinsing, and dehydration, respectively. The areas may be provided with touch buttons or physical buttons, or may be provided with a touch panel or touch scheme to receive commands on a display part screen.

[0129] The sub-display 152 may be disposed within the option selection part 140.

[0130] The sub-display 152 may be configured to display information about the options selected or activated through the option selection part 140 to the outside.

[0131] In addition, the sub-display 152 may be arranged spaced apart from the main selection part 151. The sub-display 152 may be disposed outside the course selection part 130 to intuitively indicate that content different from the content displayed on the main selection part 151 is displayed.

[0132] The option selection part 140 may be provided in a rectangular shape.

[0133] The sub-display 152 may include multiple lights intuitively indicating the set level of the intensity of the first, second, and third options.

[0134] For example, when more lights are illuminated or lights in higher positions are on, this indicates a higher intensity of the corresponding option.

[0135] The power part 110 may be disposed between one side of the course selection part 130 and the detergent box 53.

[0136] The execution part 120 may be disposed between the opposite side of the course selection part 130 and the sub-display 152.

[0137] The power part 110 and the execution part 120 may be provided as touch buttons or physical buttons and may selectively emit light to indicate activation or availability for input.

[0138] For example, when the power part 110 is input, the power part 110, the execution part 120, and the display part 150 may illuminate.

[0139] FIG. 6 illustrates the laundry treatment device according to the present disclosure provided as a tower type (hereinafter, a wish tower 3) in which the washing machine 1 and the dryer 2 are stacked.

[0140] The wash tower 3 may have the washing machine 1 disposed at the bottom and the dryer 2 disposed at the top. Except that the washing machine 1 and the dryer 2 share the same cabinet 10, the configuration may be identical to the configurations of the washing machine 1 and the dryer 2.

[0141] Generally, the washing machine 1 having the tub 20 is heavier than the dryer 2, and thus the washing machine 1 may be disposed under the dryer 2. However, depending on design, the dryer 2 may be disposed under the washing machine 1.

[0142] In the wash tower 3, the control panel 100 may include a shared panel 100c disposed between the washing door 11a of the washing machine 1 and the drying door 11b of the dryer 2.

[0143] The shared panel 100c may receive all control commands for the washing machine 1 and the dryer 2 and display all information displayed on the washing machine 1 and the dryer 2.

[0144] As a result, for the wash tower 3 including both the washing machine 1 and the dryer 2, the user may control both the washing machine 1 and the dryer 2 through the shared panel 100c.

[0145] FIG. 7 illustrates an embodiment of the control panel provided as a shared panel according to the present disclosure.

[0146] The shared panel 100c may include an upper portion and a lower portion, wherein one of the portions may be configured to control one of the washing machine and the dryer, and the other one may be configured to control the other one of the washing machine and the dryer.

[0147] The arrangement of the upper and lower portions of the shared panel 100c may correspond to the arrangement of the washing machine 1 and the dryer 2.

[0148] A main display 151 to display the weight information about the laundry may be arranged at the center of the shared panel 100c. A course selection part 130 configured to select a course may be disposed on one side of the main display 151, and an option selection part 140 configured to select an option may be disposed on the opposite side of the main display 151.

[0149] The main display 151 may be partitioned into upper and lower portions. The main display 151 may include a washing main display 151a disposed in the lower portion and having one or more icons or images indicating the weight information about the washing machine 1 and the state information about the washing machine 1, and a drying main display 151b disposed in the upper portion and having one or more icons or images indicating the weight information about the dryer 2 and and the state information about the dryer 2.

[0150] The course selection part 130 may be disposed on the left side of the main display 151 and be partitioned into upper and lower portions.

[0151] The course selection part 130 may include a washing course selection part 130a configured to select multiple washing courses for removing foreign substances or germs from laundry, and a drying course selection part 130b disposed above the washing course selection part 130a and configured to select multiple drying courses for removing moisture from the laundry or supplying steam and hot air for laundry care.

[0152] The option selection part 140 may be disposed on the right side of the main display 151 and be partitioned into upper and lower portions.

[0153] The option selection part 140 may include a washing option selection part 140a configured to select multiple options for setting the intensity, execution time, or additional functions of a washing course, and a drying option selection part 140b disposed below the washing option selection part 140a and configured to select multiple options for setting the intensity, execution time, or additional functions of a drying course.

[0154] The option selection part 140 may indicate whether additional functions, such as steam supply, turbo shot, water temperature control, drum sterilization, or cleaning of the heat supplier, are selected by turning light of the selection part on or off.

[0155] In addition, the sub-display 152 may be configured to indicate the intensity of an option selected through the option selection part 140. The sub-display 152 may be disposed in areas corresponding to the intensity or execution time that may be adjusted with the option selection part 140.

[0156] The sub-display may include a washing sub-display 151a disposed above the washing option selection part 140a to indicate the intensity of the set washing option, and a drying sub-display 151b disposed above the washing sub-display 151a to indicate the intensity of the set drying option.

[0157] The power part 110 may be disposed at one end of the shared panel 110 and be partitioned into upper and lower portions.

[0158] The power part may include a washing power part 110a configured to receive a washing power command to supply power to the washing machine 1, and a drying power part 110b configured to receive a drying power command to supply power to the dryer 2.

[0159] The execution part 120 may be disposed at an opposite end of the shared panel 110 and be partitioned into upper and lower portions.

[0160] The execution part 120 may include a washing execution part 120a configured to receive a washing execution command to perform the selected washing course and options, and a drying execution part 120b disposed above the washing execution part 120a configured to receive a drying execution command to perform the selected drying course and options.

[0161] FIG. 8 illustrates another embodiment of the laundry treatment device according to the present disclosure

[0162] The laundry treatment device of the present disclosure may include an integrated device 4 capable of performing both washing and drying courses.

[0163] When the laundry treatment device according to the present disclosure is configured as the integrated device 4, the cabinet 10 may include an integrated cabinet 10c defining the exterior of the integrated device, and the door 11 may include an integrated door 11d arranged to open and close an opening formed in the integrated cabinet 10c.

[0164] The sensor 13 may include an integrated sensor 12d configured to sense whether the integrated door 11d has opened or closed the opening.

[0165] The locker 13 may include an integrated locker 13d arranged to fix the integrated door 11d to the integrated cabinet 10d.

[0166] The integrated device 4 may perform both the function of the washing machine and the function of the dryer, and a drawer-type laundry treatment device (hereinafter referred to as a mini device) may be additionally installed under the integrated device.

[0167] The control panel 100 of the laundry treatment device may include an integrated panel 100d capable of simultaneously controlling one or more of the washing machine 1, the dryer 2, or the lower mini device 5.

[0168] FIG. 9 illustrates an embodiment of the internal structure of the integrated device 4.

[0169] Referring to FIG. 9, the integrated device 4 may include an integrated tub 20d rotatably accommodated in the integrated cabinet 10d to store water, and an integrated drum 30d rotatably accommodated in the integrated tub 20d to store water.

[0170] The laundry treatment device of the present disclosure may include a water supply part 50 arranged to supply water to the tub 20 and a drainage part 60 arranged to discharge water from the tub 20.

[0171] When the laundry treatment device according to the present disclosure is provided as the integrated device 4, the water supply part 50 may include an integrated water supply valve 51d coupled to the integrated cabinet 10d and connected to an external water source to selectively supply water, an integrated water supply pipe 52d extending from the integrated water supply valve 51d to deliver water supplied from the external water source, and an integrated detergent box 53d arranged to store detergent and to receive water supplied from the integrated water supply pipe 52d and deliver the water to the integrated tub 20d.

[0172] The drainage part 60 may include an integrated discharge pipe 61d connected to a lower portion of the integrated tub 20d to discharge water from the integrated tub 20d, an integrated drain pump 62d providing power to discharge the water supplied from the integrated discharge pipe 61d to the outside of the integrated cabinet 10d, and an integrated drain pipe 63d extending from the integrated drain pump 62d to the outside of the integrated cabinet 10d to discharge the water.

[0173] The laundry treatment device of the present disclosure may further include an integrated water level sensor 21d configured to sense the water level in the integrated tub 20d.

[0174] The integrated water level sensor 21d may be provided in any form as long as it can sense the water level inside the integrated tub 20d. The integrated water level sensor 21d may include a communication pipe communicating with the integrated tub 20d and having a closed end, and a sensor disposed at an upper portion of the communication pipe to sense a change in pressure inside the communication pipe.

[0175] The integrated device 4 of the present disclosure may further include an integrated support 70d arranged to support the integrated tub 20d in the integrated cabinet 10d.

[0176] The integrated support 70d may include one or more of a suspension supporting the lower portion of the integrated tub 20d and a spring supporting the upper portion of the integrated tub 20d.

[0177] The integrated device 4 of the present disclosure may include a driver 40 having the same structure as that of the washing machine 1.

[0178] The integrated device 4 may be configured such that the heat supplier 90 communicates with the integrated tub 20d.

[0179] The cabinet 10d of the integrated device 4 may have a base at a lower portion thereof, similar to the dryer 2, and the heat supplier 90 may be arranged on the base.

[0180] Alternatively, since the integrated device 4 may include the integrated tub 20d that is firmly supported inside the cabinet 10d, and the integrated tub 20d is positioned closest to the integrated drum 30d, the heat supplier 90 may be seated on the integrated tub 20d.

[0181] The heat supplier 90 may include an integrated supplier 90d seated on the upper portion of the integrated tub 20d. This configuration may prevent interference or collision with the drainage part 60 arranged at the lower portion of the integrated tub 20d.

[0182] The integrated supplier 90d may include an integrated duct 91d seated along the front-rear direction of the integrated tub 20d to circulate air inside the integrated tub 20d, an evaporator 92d accommodated in the integrated duct 91d to cool the air and condense moisture, a condenser 93d disposed downstream of the evaporator 92d to heat the air, a compressor 94d arranged to supply refrigerant to the condenser 93d to heat the air, an expansion valve that expands and cools the refrigerant discharged from the condenser 93d, and a circulation fan 96d disposed inside the circulation duct 91d to provide power to circulate the air.

[0183] Since the integrated supplier 90d is arranged on the tub 20, the water collector and the storage tank may be omitted. That is, water condensed inside the integrated duct 91d may flow back to the tub 20 and be discharged through the drainage part 60.

[0184] As a result, the integrated device 4, which is configured by integrating the washing machine 1 and the dryer 2, may perform both the washing course and the drying course.

[0185] The integrated device 4 of the present disclosure may include an integrated controller that integrates the washing controller and the drying controller. The integrated controller may be embedded in the control panel 100 or may be arranged inside the cabinet 10, separately from the control panel 100.

[0186] The integrated panel 100d may switch to either a washing mode configured to receive commands to perform a washing course or display the status of the washing course, or a drying mode configured to receive commands to perform a drying course or display the status of the drying course.

[0187] In addition, when a mini device is provided as described below, the integrated panel may switch to a mini mode configured to receive commands to execute the mini device or display the status of the mini device.

[0188] FIG. 10 illustrates an embodiment of the structure of the integrated panel.

[0189] The integrated panel 100d should implement the washing mode for performing a washing course, the drying mode for performing a drying course, and the mini mode for executing the mini device on a single panel. Therefore, the integrated panel 100d may be entirely a touch panel without physical buttons, displaying the washing, drying, and mini modes selectively.

[0190] The integrated panel 100d may be entirely in the form of a screen or a touch panel.

[0191] The integrated panel 100d may have an oval or track shape with a width longer than the height, and may be provided with a display part 150 in the central rectangular portion thereof.

[0192] A power part 110 and an execution part 120 may be arranged on one side of the display part 150. The power part 110 and execution part 120 may be configured as touch areas that light up when touch input is allowed and turn off when touch input is not allowed.

[0193] The display part 150 may be configured to display weight information and status information about the selected course and options. Further, the display part 150 may be provided as a touch panel to serve as the course input unit 130 and option selection part 140.

[0194] The display part 150 may display a course selection part 130 for selection of a course, and display the currently selected course C1 prominently, while the other selectable courses C2 and C3 in smaller form on the left and right sides.

[0195] The display part 150 may further include a status display 153 configured to indicate the status of the laundry treatment device. The status display 153 may display one or more of an internal water level, an internal temperature, a lock status, a sound emission status, and a course progress status in the form of icons or similar indicators.

[0196] The option selection part 140 may be arranged outside the course selection part 130 or the area where the course is displayed. The option selection part 140 may be spaced apart from and arranged below the status display 153.

[0197] When the option selection part 140 is input, the display part 150 may display selectable or adjustable options. In this process, the display part of the course selection part 130 and the course C may disappear.

[0198] FIG. 11 illustrates the laundry treatment device according to the present disclosure provided as a mini device.

[0199] The laundry treatment device of the present disclosure may further include a mini device 5. The mini device may have a smaller height and volume than the washing machine 1 and dryer 2 or than the integrated device 4.

[0200] The mini device, which serves as an auxiliary laundry treatment device, may be installed in addition to the washing machine 1, dryer 2, or integrated device 4. Of course, the mini device 5 can be arranged independently.

[0201] When the laundry treatment device according to the present disclosure includes the mini device 5, the cabinet 10 may include a mini cabinet 10b having a height less than the width in the lateral direction and the depth in the front-rear direction.

[0202] Since the mini cabinet 10e has a low height, it may be arranged under the washing machine 1, dryer 2, or integrated device 4.

[0203] Of course, the mini device 5 may be arranged on the washing machine 1, dryer 2, or integrated device 4. For simplicity, it is assumed in the following description that the mini device 5 is arranged under or independently of the washing machine 1, dryer 2, or integrated device 4.

[0204] The mini cabinet 10e may have an opening at the front.

[0205] The mini device 5 may further include a drawer 80 arranged to be inserted into and withdrawn from the mini cabinet 10e through the opening.

[0206] The drawer 80 may include a drawer body 82 arranged to accommodate a tub accommodating water or a rotating drum, a drawer panel 81 arranged at the front of the drawer body 82 to open and close the opening, and rails 83 arranged to allow the drawer body 82 to be inserted into and withdrawn from the mini cabinet 10e.

[0207] The drawer body 82 may be formed in the shape of a case with an open top and may include a mini door 29 arranged inside to open or close the tub or drum.

[0208] As the mini device 5 has the drawer 80, it may be prevented from interference with any other laundry treatment device or home appliance placed thereon.

[0209] FIG. 12 illustrates an embodiment of the internal structure of the laundry treatment device according to the present disclosure provided as a mini device.

[0210] The mini device 5 may include a mini tub 20e arranged to accommodate water in the drawer 80, and a mini drum 30e rotatably provided in the mini tub 20e to accommodate laundry.

[0211] The mini tub 20e and mini drum 30e may have a height smaller than the diameter thereof, and a loading inlet for loading laundry may be formed at the top thereof.

[0212] The mini door 29 may be coupled to the top of the mini tub 20e to prevent water or laundry inside the mini tub 20e from spilling arbitrarily.

[0213] The driver 40 may be arranged at the bottom of the mini tub 20e to rotate the mini drum 30e.

[0214] The driver 40 may include a mini stator 41e coupled to the bottom of the mini tub 20d to generate a rotating magnetic field, a mini rotor 42e rotated by the mini stator 41e, and a mini rotation shaft 43e rotated by the mini rotor 42e and coupled to the bottom of the mini drum 30e.

[0215] The water supply part 80 may include a mini water supply valve 51e coupled to the mini cabinet 10e, a mini water supply pipe 52e extending from the mini water supply valve 51e to the drawer to supply water, and a mini box 53e arranged to guide water supplied through the mini water supply pipe 52e to the tub.

[0216] The mini water supply pipe 52e may extend forward as far as the distance by which the drawer 80 is withdrawn from the mini cabinet 10e. The mini box 53e may be configured to receive and store detergent.

[0217] The drainage part 80 may include a mini discharge pipe 61e arranged to discharge water from the mini tub 20e, a mini pump 62e coupled to the mini discharge pipe 61e to provide power to discharge the water, and a mini drain pipe 63e extending from the mini pump 62e to the outside of the mini cabinet 10e.

[0218] The mini drain pipe 63e may extend forward as far as the distance by which the drawer 80 is withdrawn from the mini cabinet 10e.

[0219] The support 70 may include a mini suspension 70d connecting the inner lateral surface of the drawer 80 and the outer lateral surface of the mini tub 20e.

[0220] FIG. 13 illustrates an embodiment of a control panel when the laundry treatment device according to the present disclosure is provided as a mini device.

[0221] The control panel 100 may include a mini panel 100e installed on the drawer 80 to control the mini device 5.

[0222] The mini panel 100e may include a display part 150 at the center thereof, and a power part 110 and an execution part 120 may be arranged on the left and right sides of the display part 150.

[0223] A course selection part 130 may be arranged between the power part 110 and the display part 150 to select a course, and an option selection part 140 may be arranged between the display part 150 and the execution part 120 to select an option.

[0224] The display part 150 may include a main display 151 configured to display weight information or the status of a selected course. A sub-display 152 may be disposed on both sides of the main display 151 to indicate the type of the course selected by the course selection part 130 and the option selected by the option selection part 140.

[0225] The main display 151 may be one of an LCD, a lamp, or a screen, and the sub-display 152 may be one of an LCD, a lamp, or a screen.

[0226] FIG. 14 illustrates an embodiment of the laundry treatment device according to the present disclosure provided as a top-load type washing machine.

[0227] The laundry treatment device of the present disclosure may include a washing machine 1. The washing machine 1 may be a top-load type washing machine.

[0228] When the washing machine 1 is of the top-load type, most components thereof may correspond to those of the washing machine 1 shown in FIGS. 2 and 3.

[0229] To avoid redundant descriptions, only the differences from the washing machine shown in FIGS. 2 and 3 are described.

[0230] When the laundry treatment device according to the present disclosure includes a top-load type washing machine, the cabinet 10 may have an opening at the top, and the washing door 11 may be rotatably coupled to the top of the cabinet 10. The control panel 100 may be disposed in front of the washing door 11 at the top of the cabinet 10.

[0231] The laundry treatment device of the present disclosure may further include a sensor 11 configured to sense whether the washing door 11 has opened or closed the opening, and a locker 12 arranged to fix the position of the washing door 11 with the opening closed.

[0232] FIG. 15 illustrates an embodiment of the internal structure of the laundry treatment device according to the present disclosure provided as a top-load type washing machine.

[0233] The top-load type washing machine may similarly include a tub 20, a drum 30, a driver 40, a water supply part 50, and a drainage part 60.

[0234] The tub 20 and drum 30 may have a cylindrical shape with a loading inlet arranged at the top thereof.

[0235] Unlike in the case of the mini device, the tub 20 and drum 30 may have a height greater than the diameter or width thereof.

[0236] The laundry treatment device of the present disclosure may further include a pulsator 35 arranged under the drum 30 to rotate independently of the drum 30.

[0237] Although the pulsator 35 may rotate together with the drum 30, it may be arranged to rotate separately from the drum 30. As a result, the laundry may be agitated, or a water flow may be formed inside the drum 30.

[0238] The driver 40 may further include a clutch 44 configured to determine whether to rotate the pulsator 35 independently of the drum 30.

[0239] The clutch 44 may be configured to determine whether to transmit rotational power from the rotation shaft 43 to both the pulsator 35 and the drum 30 or to only one of the pulsator 35 and the drum 30.

[0240] The rotation shaft 43 is coupled to the clutch 44, and the clutch 44 may include a separate drive shaft 45 that transmits the power of the rotation shaft 43.

[0241] The drive shaft 45 may be coupled to the pulsator 35, and the housing of the clutch 44 may be coupled to the drum 30.

[0242] As a result, the pulsator 35 and drum 30, which are coupled to different components, may selectively receive power from the driver 40.

[0243] The control panel 100 may control the clutch 44 to rotate the pulsator 35 independently of the drum 30 during washing and rinsing, while rotating the pulsator 35 and drum 30 together during dehydration.

[0244] As a result, during the washing and rinsing, laundry may be twisted or agitated by the water flow, enhancing washing and rinsing performance. During the dehydration, the pulsator 35 and drum 30 may be prevented from rotating at different speeds to cause friction or damage to the laundry.

[0245] FIG. 16 illustrates embodiments in which the laundry treatment device according to the present disclosure senses the weight of laundry.

[0246] The laundry treatment device of the present disclosure may sense the weight of laundry and perform washing and drying courses according to the sensed weight. For heavier laundry, which requires more time and energy for washing and drying, and thus the execution time of the washing and drying courses is set longer. As a result, this may prevent the courses from ending with the laundry being washed insufficiently or dried insufficiently, thereby ensuring washing performance and drying performance.

[0247] Conversely, when the weight of laundry sensed by the laundry treatment device according to the present disclosure is light, it may require a small amount of time and energy for washing and drying, and thus the execution time of the washing and drying courses is set short.

[0248] As a result, over-washing or over-drying of the laundry may be prevented. Thereby, the laundry may be protected from damages and energy may be saved.

[0249] The laundry treatment device of the present disclosure may sense the weight of the laundry by rotating the drum containing the laundry. By measuring the current or load applied to or generated by the driver 40 when rotating the drum 30, the weight of the laundry may be calculated.

[0250] Even when laundry is placed in the drum 30 before power is supplied to the driver 40, the laundry treatment device according to the present disclosure may normally sense the weight of the laundry based on the current output or generated by the driver 40 after power is supplied to the driver 40. Thus, whether the user opens the door 11 and loads laundry with power supplied to the driver 40 by the user by providing an input through the power part 110, or the user provides an input through the power part 110 after opening the door 11 and loading laundry, the laundry treatment device according to the present disclosure may sense the the weight of the laundry in any scenarios.

[0251] Consequently, although the time required to sense the weight of the laundry may be longer than when sensing the weight through a load sensor that directly senses the load of the drum, the laundry treatment device according to the present disclosure may sense the weight of the laundry in any situations where the user opens the door 11, loads the laundry, and then provides an input through the power part 110.

[0252] FIG. 16-(a) illustrates an embodiment in which the laundry treatment device according to the present disclosure senses the weight of laundry. The laundry treatment device of the present disclosure may normally sense the weight of the laundry by rotating the drum less than one full revolution.

[0253] In other words, rotating the drum 30 for a longer time may increase accuracy of sensing of the weight of the laundry. However, even when the drum 30 is rotated by a certain angle, the weight of the laundry may be sensed sufficiently by calculating the necessary inertia or current for the rotation, or torque and energy generated during the brief rotation and stop.

[0254] Therefore, although the laundry treatment device according to the present disclosure can sense the weight of the laundry by rotating the drum one full revolution or more, it may sense the weight of the laundry by rotating the drum less than one full revolution.

[0255] The laundry treatment device of the present disclosure may sense the weight of the laundry by rotating the drum at an angle of 360 degrees or less. The laundry treatment device of the present disclosure may sense the weight of the laundry during the process of rotating the drum at an angle of 360 degrees or less, or it may calculate the weight of the laundry after the process in which the drum rotates and then stops. The process in which the drum rotates and then stops also includes the concept of the drum rotating in reverse to return to its original position.

[0256] In any case, the laundry treatment device according to the present disclosure may completely determine the weight of the laundry within three seconds after the drum begins to rotate.

[0257] As a result, when an input is provided through the power part 110 or the opening and closing of the door 11 is sensed by the sensor 13, the laundry treatment device according to the present disclosure may sense the weight by rotating the drum 30 less than one full revolution by driving the driver 40 before an input is provided through the course selection part 130 or the execution part 120.

[0258] When the weight is sensed, the controller may display the laundry weight information on the display part 150 before an input is provided through the course selection part 130 or the execution part 120. As a result, the user may check the display parted weight information and select and execute an appropriate course.

[0259] The locker 12 is controlled to lock the door 11 to the cabinet 10 only when an input is provided through the execution part 120. Consequently, the laundry treatment device of the present disclosure may sense the weight of the laundry by rotating the drum 30 while the door remains unlocked, and the weight information about the laundry may be displayed on the display part 150.

[0260] Therefore, the user may check the weight information, open the door 11, and then add more laundry or remove laundry in an appropriate direction.

[0261] FIG. 16-(b) illustrates another embodiment in which the laundry treatment device according to the present disclosure senses the weight of laundry.

[0262] Of course, the laundry treatment device according to the present disclosure may sense the weight of the laundry by rotating the drum one full revolution or more. However, when sensing the weight of the laundry by rotating the drum less than one full revolution, the rotation angle of the drum may need to be controlled.

[0263] For example, as shown in FIG. 16-(a), the drum may be rotated to angle A, which is 90 degrees or more, and then stopped. During this operation, the controller may sense the weight of the laundry through the driver 40.

[0264] However, in a front-load type laundry treatment device, when the drum 30 rotates to angle A, the arrangement and shape of the laundry may vary due to the laundry falling or rolling to the lower part of the drum 30 by gravity. As a result, additional current may be applied to or generated by the driver 40 due to the movement or impact of the laundry, which may reduce the accuracy of the controller in sensing the weight of the laundry.

[0265] Therefore, the laundry treatment device according to the present disclosure may sense the weight of the laundry by rotating the drum 30 to angle B, which is less than 90 degrees. As a result, changes in the arrangement and shape of the laundry may be minimized or completely prevented, and the controller may accurately sense the weight of the laundry through the current measured by the driver 40.

[0266] Preferably, the angle B may be set to be less than 45 degrees. Most preferably, it may be set to be less than 15 degrees. As a result, the controller may accurately sense the weight of the laundry by eliminating situations in which the shape or arrangement of the laundry changes.

[0267] In addition, since the laundry rotates that much less, the user may hardly notice that the drum 30 rotates arbitrarily, and thus will not suspect the performance of the laundry treatment device, and the laundry treatment device may display the weight information more quickly.

[0268] FIG. 17 illustrates an embodiment in which the laundry treatment device according to the present disclosure provided as a top-load type washing machine senses the weight of laundry.

[0269] Referring to FIG. 17-(a), until the washing course and the drying course are performed, and while the door is in an unlocked position, the laundry loaded in the drum 30 may remain seated on the pulsator 35.

[0270] Even in this process, the laundry treatment device according to the present disclosure may sense the weight of the laundry through the driver 40 by rotating the drum 30 less than one full revolution.

[0271] However, when sensing the weight of the laundry, the laundry treatment device according to the present disclosure may rotate the drum 30 and the pulsator 35 simultaneously. As a result, damage or twisting of the laundry or changes in the shape or position of the laundry, which may be caused by friction between the drum 30 and the pulsator 35 may be minimized.

[0272] Referring to FIG. 17-(b), in the top-load type washing machine, even when if the drum 30 rotates nearly one full revolution, the probability that the shape or arrangement of the laundry will change is lower than in the front-load type washing machine.

[0273] Therefore, when the laundry treatment device according to the present disclosure is provided as a top-load type washing machine, in order to sense the weight of the laundry, one or both of the drum 30 and the pulsator 35 may be rotated 90 degrees or more and stopped before reaching 360 degrees.

[0274] For example, the laundry treatment device according to the present disclosure may rotate the drum 30 and the pulsator 35 simultaneously to less than 180 degrees and then stop the same. Then, it may measure the load applied the driver 40 to sense the weight of the laundry.

[0275] As a result, before an input is provided through the execution part 120, the laundry treatment device according to the present disclosure may display the weight information about the laundry with the door unlocked.

[0276] FIG. 18 illustrates an embodiment in which a controller of the laundry treatment device according to the present disclosure senses the weight of laundry through a driver.

[0277] Referring to FIG. 18-(a), before performing the washing cycle, rinsing cycle, or dehydration cycle, the laundry treatment device according to the present disclosure may perform a sesing operation (F) of sensing the weight of the laundry inside the drum 30, with the door unlocked.

[0278] To this end, the controller may perform an acceleration operation (F1) of starting to rotate the drum 30, a deceleration operation (F2) of stopping the drum 30, and a weight sensing operation (F3) of sensing the weight of the laundry accommodated in the drum based on a measured acceleration of the driver 40 during the acceleration operation and a measured deceleration of the driver 40 during the deceleration operation.

[0279] While driving the driver 40, the laundry treatment device according to the present disclosure senses the measured acceleration value measured by the driver 40 or applied to the driver 40. While decelerating the driver 40, the laundry treatment device senses a measured deceleration value measured by the driver 40 or applied to the driver 40. Thereafter, the weight of the laundry accommodated in the drum 30 may be sensed by calculating the measured acceleration value and the measured deceleration value.

[0280] The measured acceleration value and the measured deceleration value may be command values applied to the driver 40 while the driver 40 is driven, or may be values measured by the driver 40 while the driver 40 is driven.

[0281] The sensing operation (F) may further include a preparation operation (F0) of checking the position of the driver 40 to set a reference value for performing the acceleration operation (F1) and the deceleration operation (F2). In the preparation operation (F0), the drum 30 may remain stopped.

[0282] In the acceleration operation (F1), the drum that is stopped in the preparation operation (F0) may be accelerated to a first rpm. In the deceleration operation (F2), the drum may be decelerated from the first rpm. In other words, the acceleration operation (F1) and the deceleration operation (F2) may be performed consecutively. The deceleration operation (F2) is performed simply by reducing the current command value to the driver 40 or cutting off the voltage applied to the driver 40 in the acceleration operation (F1), and therefore there is no risk of damage to the controller P or the circuitry.

[0283] In this case, the measured acceleration value and the measured deceleration value may be measured between the first rpm and a second rpm lower than the first rpm. In other words, the weight may be sensed by measuring the value of the current in the section including the peak point in the speed graph. Since the value of the current is measured in a continuous situation, the possibility of errors may be minimized in sensing the weight.

[0284] The measured acceleration value and the measured deceleration value may be measured between the second rpm lower than the first rpm and a third rpm higher than the second rpm but lower than the first rpm. In other words, the weight may be sensed by measuring the value of the current in a section where the same speed is maintained, other than the section including the peak point. Since the change in speed is greatest at the peak point, the accuracy of the weight calculation may be improved by measuring a stabilized current.

[0285] The first rpm may be set to be lower than the fixed rpm at which the laundry accommodated inside the drum 30 is attached to the inner wall of the drum 30. That is, the first rpm may be lower than the rpm applied during the washing, rinsing, and dehydration cycles.

[0286] The acceleration operation (F1) may correspond to the operation of rotating the drum, and the deceleration operation (F2) may correspond to the operation of restoring the drum to the original position thereof. As a result, the restoration operation (D2) may be the operation of actively applying current by the controller P to rotate the driver 40 in the reverse direction.

[0287] The weight sensing operation (F3) may involve an operation in which the controller P directly calculates the moment of inertia, but the operation of comparing and extracting the moment of inertia with weight data about the laundry stored in a storage part linked with the controller may be skipped.

[0288] The amount of current applied in the acceleration operation (F1) may be defined as a first current amount, and the amount of current applied in the deceleration operation (F2) may be defined as a second current amount. The controller P may sense the weight based on the first current amount and the second current amount.

[0289] FIG. 18-(b) illustrates another embodiment in which the controller calculates the weight of the laundry.

[0290] The figure illustrates that the deceleration operation (F2) does not correspond to a deceleration operation in which current is applied to the driver 40 to rotate the drum 30 in the reverse direction, but rather correspond to a stopping operation in which power supplied to the driver 40 is cut off, allowing the driver 40 to be decelerated by the weight of the laundry to be restored.

[0291] The controller P may sense the counter electromotive force generated during the stopping operation and measure the value of current corresponding to the counter electromotive force to sense the weight of the laundry.

[0292] The amount of current applied in the acceleration operation (F1) may be defined as the first current amount, and the amount of current applied in the stopping operation (F2) may be defined as a third current amount. The controller P may sense the weight based on the first current amount and the third current amount.

[0293] FIG. 19 illustrates an embodiment in which the laundry treatment device according to the present disclosure utilizes a weight detection method based on the above-described structure and method.

[0294] FIG. 19A illustrates an embodiment in which the aforementioned weight sensing method is basically used.

[0295] When an input is provided through the power part 110 of the laundry treatment device according to the present disclosure is, power may be supplied to the water supply part 50, the driver 40, the drainage part 60, and the controller P.

[0296] The controller P may be configured to sense the weight of the laundry when power is supplied according to the input provided through the power part 110. For example, in the laundry treatment device according to the present disclosure, the input through the power part 110 may be a prerequisite for sensing the weight of the laundry.

[0297] Therefore, even when the user opens the door 11, places the laundry into the drum 30, and closes the door 11 before providing an input through the power part 110, the controller P may immediately sense the weight of the laundry.

[0298] The controller P may calculate the expected time required for execution of a specific course or option, based on the weight of the laundry.

[0299] To this end, the controller P may recognize the expected time corresponding to the weight of the laundry.

[0300] In addition, the controller P may have data organized for the amount of detergent required when performing any course or option according to the weight of the laundry. The controller P may calculate the amount of detergent required to wash the laundry according to the course or option.

[0301] For example, the laundry treatment device according to the present disclosure may perform a power supply operation (A1) of supplying power by inputting the power part 110, and a weight sensing operation (A2) of sensing the weight of the laundry accommodated in the drum 3 when the power supply operation (A1) is performed.

[0302] In other words, the laundry treatment device according to the present disclosure may sense the weight before an input is provided through the execution part 120.

[0303] When the weight of the laundry is sensed in the weight sensing operation (A2), an information display operation (A3) may be performed in which the display part 150 displays weight information including at least one of the weight of the laundry, the expected execution time of a course or option for performing washing of the laundry, and the amount of detergent required for the course or option.

[0304] In the information display operation (A3), the execution time corresponding to a preset standard course or standard option corresponding to the weight of the laundry may be displayed.

[0305] The user may check the weight of the laundry and the execution time of the preset course or option displayed in the information display operation (A3), compare the same with their schedule, and check the amount of the detergent.

[0306] In other words, the laundry treatment device according to the present disclosure may allow the user to check the weight-related information before an input is provided through the execution part 120, and the user may select a desired course and option and provide an input through the execution part 120. That is, when the information displayed in the information display operation (A3) is satisfactory, the user may provide an input through the execution part 120. The controller P may perform an execution input operation (A6) of sensing the input provided through the execution part 120.

[0307] When the execution input operation (A6) is performed, the controller P may control the locker 12 to lock the door 11 to the cabinet 10 to prevent the door 11 from being arbitrarily opened.

[0308] When the execution input operation (A6) is performed, the controller P may perform one or more of a washing cycle, a rinsing cycle, and a dehydration cycle according to the setting of the course or option.

[0309] However, after the user checks at least one of the weight of the laundry, the execution time of the preset course or option, or the amount of the detergent in the information display operation (A3), a course setting operation (A4) of selecting a course and an option through the course selection part 130 and the option selection part 140 may be further performed.

[0310] That is, the user may select any course or option instead of the standard course that is performed by default.

[0311] For example, through the course setting operation (A4), the user may provide an input through one or more of the course selection part 130 and the option selection part 140 after checking the weight of the laundry. After checking the execution time linked with the weight, the user may provide an input through one or more of the course selection part 130 and the option selection part 140 to change the course or option.

[0312] When the course setting operation (A4) is performed, the controller P may perform a change display operation (A5) of recalculating the expected execution time or detergent amount of the changed course or option corresponding to the weight of the laundry and transmitting the same to the display part 150.

[0313] In the change display operation (A5), the display part 150 may display at least one of the expected execution time of the changed course or option and the changed detergent amount.

[0314] When the user determines that the expected execution time or detergent amount is appropriate, the user may provide an input through the execution part 120. When the expected execution time or detergent amount is not appropriate, the user may re-provide an input through one or more of the course selection part 130 and the option selection part 140.

[0315] The controller P may perform the execution input operation (A6) of sensing the input provided through the execution part 120.

[0316] However, when the input re-provided through one or more of the course selection part 130 and the option selection part 140 is sensed, the course setting operation (A4) and the change display operation (A5) may be performed again.

[0317] As a result, the laundry treatment device according to the present disclosure may complete weight sensing before the user selects and executes the final course and option. Further, by rotating the drum less than one revolution and calculating the weight within three seconds, information related to the weight may be provided before an input is provided through one or more of the course selection part 130 and the option selection part 140.

[0318] For example, weight sensing may already be completed at the time when the display part 150 is booted according to the input provided through the power part 110, and thus information corresponding to the weight may be provided to the user.

[0319] Therefore, the user may check the information related to the weight, check the expected time of the most suitable course and option at the current time, and then set the optimal course and option or introduce the optimal amount of detergent.

[0320] FIG. 19B illustrates an extended embodiment of the control method of FIG. 19A.

[0321] The laundry treatment device according to the present disclosure may perform a power input operation (A1) of supplying power to one or more of the controller P, the driver 40, the water supply part 50, the drainage part 60, and the control panel 100 when a command is input through the power part 110.

[0322] Once the power input operation (A1) is performed, the laundry treatment device may perform a weight sensing operation (A2) of sensing the weight of the laundry.

[0323] To sense the weight in the weight sensing operation (A2), the drum may be rotated less than one revolution, as described above.

[0324] At this time, the controller P may also perform a laundry sensing operation (A2-1) of sensing whether the laundry is accommodated in the drum 30. When there is laundry in the drum 30 in the laundry sensing operation (A2-1), the control method of FIG. 19A may be performed.

[0325] However, when the laundry is not accommodated in the drum 30, the controller P may perform a door opening / closing sensing operation (A2-2) of waiting until the door 11 is opened and closed.

[0326] That is, when the controller P does not sense the weight of the laundry, it may wait until it senses the opening and closing of the door.

[0327] Once the door opening / closing sensing operation (A2-2) is performed, the controller P may perform the weight sensing operation (A2) again to additionally sense the weight of the laundry.

[0328] Thus, for the laundry treatment device, in the case where laundry is accommodated in the drum 30 before an input is provided through the power part 110, the weight may be immediately sensed. However, in the case where laundry is not accommodated in the drum 30 before an input is provided through the power part 110, the weight of the laundry may be sensed when the laundry is put into the drum 30.

[0329] In other words, when an input is provided through the power part 110 and power is supplied to the controller P, the laundry treatment device according to the present disclosure may, in principle, immediately perform weight sensing.

[0330] Accordingly, the user may first put laundry into the drum 30 before providing an input through the power part 110. Then, when the input is provided through the power part 110, the controller P may perform weight sensing.

[0331] However, when there is no laundry inside the drum 30 before the input is provided through the power part 110, the controller P may perform weight sensing only when the door is opened and closed. Of course, whether laundry is present or not may be sensed by sensing the weight. In this case, when no weight is sensed, the weight may not be displayed on the display part 150.

[0332] Upon sensing the opening and closing of the door 11 is sensed after the input is provided through the power part 110, the controller P may determine that laundry has been loaded, and may perform the weight sensing. Of course, when no weight is sensed, the display part 150 may not display the weight, or may display information indicating that no laundry is present inside.

[0333] When weight is sensed, the laundry treatment device according to the present disclosure may display on the display part 150 at least one of the weight information about the laundry, the execution time of a course or option corresponding to the weight, or the required amount of detergent.

[0334] As a result, the laundry treatment device according to the present disclosure may sense the weight of the laundry may be sensed before an input is provided through the execution part 120, and may provide information such as the execution time of a course or option or the required amount of detergent to the user.

[0335] Consequently, sensing and displaying the weight information about the laundry before the input is provided through the execution part 120 means that the drum 30 rotates with the door 11 unlocked, and the weight information is displayed on the display part 150.

[0336] FIG. 20 illustrates an embodiment in which weight detection is performed depending on whether a door is opened or closed.

[0337] Referring to FIG. 20A, the controller P may be configured to sense the weight of the laundry upon sensing the opening and closing of the door 11. That is, the condition for sensing the weight of the laundry may be the opening and closing of the door 11.

[0338] The opening and closing of the door 11 may mean that laundry is highly likely to have been loaded into the drum 30. In addition, the opening and closing of the door 11 may mean that the amount of laundry in the drum 30 has increased or decreased.

[0339] Thus, upon sensing the opening and closing of the door 11, the laundry treatment device according to the present disclosure may immediately sense the weight of the laundry and inform the user of the weight of the laundry, the expected or changed execution time of a course or option, or the required or changed amount of detergent.

[0340] The laundry treatment device of the present disclosure may perform an opening / closing operation (B1) of sensing the opening and closing of the door 11. When the opening and closing of the door 11 is sensed in the opening / closing operation (B1), the controller P may perform a weight sensing operation (B2) of sensing the weight of the laundry, and perform an information display operation (B3) of displaying at least one of the weight of the laundry, the execution time of a preset course or option, and the required amount of detergent according to the sensed weight.

[0341] In other words, the laundry treatment device according to the present disclosure may sense and display the weight of the laundry within three seconds in the above-described manner when the opening and closing of the door 11 is sensed, even before inputs are provided through the course selection part 130 and the execution part 120.

[0342] After the information display operation (B3), the controller P may sense whether the user provides an input through the execution part 120 to perform an execution input operation (B6), and may sense whether the user changes the course or option to perform a course setting operation (B4) and a change display operation (B5).

[0343] The information display operation (B3), the course setting operation (B4), the change display operation (B5), and the execution input operation (B6) may be the same as those in the previous embodiment.

[0344] FIG. 20B illustrates an extended embodiment of FIG. 20A.

[0345] The laundry treatment device of the present disclosure may further perform a power input operation (B0) of sensing whether power has been input before the opening / closing operation (B1).

[0346] The power input operation (B0) should be performed to allow power to be supplied to the controller P to enable the controller P to sense whether the door 11 is opened and closed.

[0347] Therefore, when the controller P senses that the door 11 is opened and closed after the power input operation (B0), it may perform the weight sensing operation (B2).

[0348] Once the opening and closing of the door 11 is sensed in the opening / closing operation (B1), the controller P may perform the weight sensing operation (B2) of sensing the weight of the laundry, and perform the information display operation (B3) of displaying at least one of the weight of the laundry, the execution time of a preset course or option, and the required amount of detergent according to the sensed weight.

[0349] After the information display operation (B3), the controller P may sense whether the user provides an input through the execution part 120 to perform the execution input operation (B6), and may sense whether the user changes the course or option to perform the course setting operation (B4) and the change display operation (B5).

[0350] The information display operation (B3), the course setting operation (B4), the change display operation (B5), and the execution input operation (B6) may be the same as those in the previous embodiment.

[0351] Thus, upon sensing the opening and closing of the door 11 with power supplied to the laundry treatment device according to the present disclosure, the laundry treatment device may immediately sense the weight of the laundry and inform the user of the weight of the laundry, the expected or changed execution time of a course or option, or the required or changed amount of detergent.

[0352] FIG. 20C illustrates another extended embodiment of FIG. 20A.

[0353] The laundry treatment device of the present disclosure may be configured to store the history of the door 11 being opened and closed in a storage unit P2. That is, even when no input is provided through the power part 110, standby power may be supplied to the control panel P, allowing the history of the door 11 being opened and closed to be stored.

[0354] Therefore, even before the input is provided through the power part 110, the laundry treatment device according to the present disclosure may perform a history storage operation (B11) of storing the history of opening / closing of the door 11 in the controller P when the door 11 is opened and closed.

[0355] Subsequently, when the power input operation (B0) is performed in which an input is provided through the power part 110 and power is supplied to the controller P, the controller P may perform the weight sensing operation (B2).

[0356] When the opening and closing of the door 11 are sensed in the opening / closing operation (B1), the controller P may perform the weight sensing operation (B2) of sensing the weight of the laundry, and perform the information display operation (B3) of displaying at least one of the weight of the laundry, the execution time of a preset course or option, and the required amount of detergent according to the sensed weight.

[0357] After the information display operation (B3), the controller P may sense whether the user provides an input through the execution part 120 to perform the execution input operation (B6), and may sense whether the user changes the course or option to perform the course setting operation (B4) and the change display operation (B5).

[0358] The information display operation (B3), the course setting operation (B4), the change display operation (B5), and the execution input operation (B6) may be the same as those in the previous embodiment.

[0359] Thus, even when the user opens the door 11 and pre-loads laundry into the drum 30 before an input is provided through the power part 110, the laundry treatment device according to the present disclosure may sense the weight of the laundry by checking the opening / closing of the door 11 once the input is provided through the power part 110.

[0360] Accordingly, the laundry treatment device according to the present disclosure may assist the user in selecting an optimal course, option, or amount of detergent before an input is provided through the execution part 120.

[0361] Therefore, the controller P may be configured to sense the weight of the laundry when an input is provided through the power part 110 or when the sensor 13 senses that the door closing the opening.

[0362] The controller P may be configured to sense the weight only when both the input provided through the power part 110 and the opening and closing of the door 11 are sensed, or to sense the weight when either the input is provided through the power part 110 or the opening and closing of the door 11 is performed.

[0363] In the laundry treatment device according to the present disclosure, the locker 12 may fix the door 11 to the cabinet 1 only when an input is provided through the execution part 120 and a course and option are started. Therefore, when weight sensing is performed before an input is provided through the execution part 120, the door 11 may remain unlocked by the locker 12.

[0364] Thus, the user may open the door 11 during or even after the weight sensing to additionally load or remove laundry.

[0365] Upon sensing further opening and closing of the door 11, the laundry treatment device according to the present disclosure may re-perform weight sensing to sense whether the weight of the laundry has changed and may display information related to the changed weight on the display part 150.

[0366] That is, sensing the opening and closing of the door as described above for weight sensing may include re-sensing the weight when opening and closing of the door is additionally sensed after the initial weight sensing.

[0367] FIG. 21 illustrates another embodiment in which the laundry treatment device according to the present disclosure determines whether to additionally perform weight detection.

[0368] As described above, the laundry treatment device according to the present disclosure performs weight sensing again when the door 11 is re-opened and closed or when an input is provided again through the power part 110 such that power supply to the controller P is interrupted and then restored.

[0369] However, in the case where the time during which the door 11 is opened and closed is much shorter than a limited time T required to load laundry into the drum 3, the internal state of the drum 3 is unlikely to change. Similarly, in the case where the time during which an input is re-provided through the power part 110 and power is re-supplied to the controller P is much shorter than the limited time T required to load laundry, the internal state of the drum 3 is unlikely to change.

[0370] Accordingly, when the re-opening / closing time of the door 11 or the re-input time of the power part 110 is shorter than the limited time T, the laundry treatment device according to the present disclosure may not additionally perform weight sensing.

[0371] Thus, when the user mistakenly opens and quickly closes the door 11 or mistakenly provides an input through the power part 110 and then re-provides an input, the laundry treatment device according to the present disclosure may block weight sensing, thereby preventing unnecessary energy consumption.

[0372] The controller P may be configured to sense the time interval between an input and a re-input provided through the power part 110, and may also be configured to sense the time interval between the opening and closing of the opening 111 performed by the door 11 through the sensor 13 or the locker 12.

[0373] The limited time T may be, for example, shorter than one second.

[0374] The sensor 13 may be provided in the cabinet 1 to face the door 11or be adjacent to the door 11, and may be configured as a Hall sensor or reed switch configured to sense signals such as a magnetic field generated by the door 11. It may also sense the opening angle of the door 11 by sensing the strength of the magnetic field.

[0375] For example, when the sensor 13 does not sense the magnetic field, it may be determined that the door 11 has been opened beyond a loading gap, which is a minimum distance sufficient to load laundry through the opening 111. When the sensor senses the magnetic field, it may be determined that the door 11 has opened the opening 111 by a distance shorter than or equal to the loading gap.

[0376] In addition, the sensor 13 may be provided at a hinge that rotatably couples the door 11 to the cabinet 1 so as to sense the opening angle of the door 11.

[0377] As such, when the door 11 opens and closes the opening 111 within the loading gap, the laundry treatment device according to the present disclosure senses that may determine that the internal state of the drum 3 has not changed and may skip weight sensing.

[0378] The loading gap may be set, for example, to less than 10 cm.

[0379] Specifically, the laundry treatment device according to the present disclosure may perform a power input operation (M1) of inputting a power command for supplying power to the controller P as an input of the power part 110. Subsequently, a door sensing operation (M2) of sensing whether the door 11 has closed the opening 111 may be performed.

[0380] When the door 11 closes the opening 111, a weight sensing operation (M3) of sensing the weight by rotating the drum less than one revolution may be performed.

[0381] The weight sensing operation (M3) may be sensing the weight based on a current applied or output when the drum rotates less than one revolution. In this regard, the rotation angle of the drum may be set to be less than or equal to the angle at which laundry is separated from the inner wall of the drum or the arrangement of the laundry varies.

[0382] After the drum is rotated, the controller P may calculate the weight within two seconds in the weight sensing operation (M3), and an information display operation (M4) of displaying information related to the sensed weight on the display part 150 may be performed within three seconds.

[0383] Subsequently, before an input is provided through the execution part 120, the controller P may perform a state sensing operation (M5) of sensing whether the door 11 has opened and closed the opening 111, or whether an input has been re-provided through the power part 110.

[0384] In the state sensing operation (L5), when it is sensed that the door 11 has re-opened and closed the opening 111, or that an input has been provided through the power part 110 again to supply interrupted power to the controller P again, the controller P may perform a limit determination operation (M6) of determining whether the time during which the door 11 has re-opened and closed the opening or the time during which an input is repeatedly provided through the power part 110 is within a limited time.

[0385] When the time during which the door 11 has re-opened and closed the opening or the time during which an input is repeatedly provided through the power part 110 is the limited time or longer than the limited time in the limit determination operation (M6), the weight sensing operation (M3) may be performed again, and the information display operation (M4) may be performed again to correct the existing information to information corresponding to the newly sensed weight.

[0386] On the other hand, when the time during which the door 11 has re-opened and closed the opening or the time during which an input is repeatedly provided through the power part 110 is shorter than the limited time in the limit determination operation (M6), the controller P may perform an ignore operation (M7) in which weight sensing is no longer performed even when the door re-opens and closes the opening or an input is re-provided through the power part.

[0387] In the limit determination operation (M6), it may also be determined whether the degree, interval, or angle at which the door 11 opens the opening 111 is smaller than a loading interval that allows the laundry to be loaded.

[0388] For example, the sensor 13 provided in the cabinet 1 may be configured to calculate the degree of opening of the door 11 based on the sensing value sensed by a Hall sensor, or a hinge provided on the door 11 may be configured to sense the opening angle.

[0389] While the ignore operation (M7) is being performed, or while the information display operation (M4) is being performed, an execution input operation (M8) may be performed, in which an input is provided through the execution part 120 and an execution command for executing the course and option selected by the course selection part 130 is input.

[0390] Once the execution input operation (M8) is performed, the locker 12 may perform a door locking operation (M9) of locking the door 11 to the cabinet 1 to block the opening 111 from being opened.

[0391] Hereinafter, a description will be given of how the control method of the laundry treatment device according to the present disclosure is implemented.

[0392] FIG. 22 illustrates an embodiment of a control method of the laundry treatment device according to the present disclosure implemented on a washing panel or a drying panel.

[0393] Since the washing panel 100a and the drying panel 100b have the same structure, an embodiment applied to the washing panel 100a will be described for the sake of avoiding redundant description.

[0394] Referring to FIG. 22-(a), when a user provides an input through the power part 100, power is supplied to the main display 150 disposed inside the course display 130.

[0395] The main display 150 displays booting information G1 indicating that the washing machine 1 is in a preparation state.

[0396] The booting information may include a welcome message such as "Hello," or one or more of an icon, pictogram, or hologram indicating that booting is being performed.

[0397] While the booting information is displayed, the laundry treatment device according to the present disclosure may immediately control the driver 40 to rotate the drum 30 and sense the weight of laundry. To quickly sense the weight of the laundry, the drum 30 may be rotated less than one revolution.

[0398] At this time, since an input has not yet been provided through the execution part 120, the locker 12 may keep the door unlocked.

[0399] When the booting of the washing panel 100a is completed, the controller may have already completed the sensing of the weight of the laundry.

[0400] Referring to FIG. 22-(b), one or more of weight information I and a selected course C may be displayed on the display part 150. The selected course C may correspond to a course that is automatically selected when the washing panel 100a is booted, even when the user does not select the same through the course selection part 130. For example, the automatically selected course C may correspond to a standard course.

[0401] The weight information I may include one or more of information on the weight of the laundry, an expected time I2 for treating the laundry of the weight in the course, and a required detergent amount I3 for treating the laundry of the weight in the course.

[0402] The display part 150 may display the weight information I even when the user has not input a separate command after providing an input through the power part 110. Thus, the user may recognize the amount of detergent required to treat the loaded laundry and the expected execution time of the course for treating the laundry.

[0403] During this process, the user may change the course by rotating the course selection part 130. At this time, the execution time I2 may be changed to an expected execution time corresponding to the changed course and displayed.

[0404] Referring to FIG. 22-(c), after checking one or more of the weight information I and the selected course C, the user may provide an input through the execution part 120. At the time when the user provides the input through the execution part 120, it is highly likely that the user has already recognized the expected execution time I2.

[0405] Therefore, when the user provides an input through the execution part 120, the user may recognize the time at which the course will be completed, and then accurately make a plan to return to the washing machine 1 after that time elapses. After providing the input through the execution part 120, the user may immediately leave the washing machine 1 and carry out personal schedules.

[0406] Referring to FIG. 22-(d), when an input is provided through the execution part 120, the locker 12 may fix the door 11 to the cabinet 10 to block the opening from being arbitrarily opened.

[0407] The display part 150 may display state information about the course that is being executed.

[0408] The state information may include one or more of a guide text indicating that the course is being executed and the remaining time.

[0409] Once an input is provided through the execution part 120, the laundry treatment device according to the present disclosure may execute the selected course. For example, when the course is a washing course, water supply may start immediately, or the drum may rotate to agitate the laundry and then the water supply may start.

[0410] In the case where it is sensed that the door 11 is not closed, the course may be executed after the door 11 is closed.

[0411] FIG. 23 illustrates an embodiment of a control method of the laundry treatment device according to the present disclosure implemented on a shared panel.

[0412] Referring to FIG. 23-(a), when the input is provided through one or more of the washing power part 110 and the drying power part 110, one or more of the washing display 150a and the drying display 150b may display booting information G1.

[0413] The booting information may include a welcome message such as "Hello," or one or more of an icon, pictogram, or hologram indicating that booting is being performed.

[0414] While the booting information is displayed, the laundry treatment device according to the present disclosure may immediately control the driver 40 of the washing machine 1 or the dryer 2 for which the input is provided through the power part 110 to rotate the drum 30 and sense the weight of laundry. To quickly sense the weight of the laundry, the drum 30 of the washing machine 1 or the dryer 2 for which the input is provided through the power part 110 may be rotated less than one revolution.

[0415] At this time, since an input has not yet been provided through the execution part 120, the locker 12 may keep the door unlocked.

[0416] When the booting of of the washing machine 1 or the dryer 2 for which the input is provided through the power part 110 is completed, the controller may have already completed the sensing of the weight of the laundry.

[0417] Referring to FIG. 23-(b), one or more of weight information I and a selected course C may be displayed on the display part 150 of the washing machine 1 or the dryer 2 for which the input is provided through the power part 110. The selected course C may correspond to a course that is automatically selected when the control panel 100 is booted, even when the user does not select the same through the course selection part 130. For example, the automatically selected course C may correspond to a standard course.

[0418] The weight information I may include one or more of information on the weight of the laundry, an expected time I2 for treating the laundry of the weight in the course, and a required detergent amount I3 for treating the laundry of the weight in the course.

[0419] When the weight of laundry in the drum is not sensed, the display part 150 may display information indicating that laundry is not present. In this case, the controller may wait for the opening and closing of the door 11, and then re-sense the weight of laundry in the manner described above.

[0420] The display part 150 of the washing machine 1 or the dryer 2 for which the input is provided through the power part 110 may display the weight information I even when the user has not input a separate command after providing an input through the power part 110. Thus, the user may recognize the amount of detergent required to treat the loaded laundry and the expected execution time of the course for treating the laundry.

[0421] During this process, the user may change the course by pressing the course selection part 130. At this time, the execution time I2 may be changed to an expected execution time corresponding to the changed course and displayed.

[0422] Referring to FIG. 23-(c), after checking one or more of the weight information I and the selected course C, the user may provide an input through the execution part 120. At the time when the user provides the input through the execution part 120, it is highly likely that the user has already recognized the expected execution time I2.

[0423] Therefore, when the user provides an input through the execution part 120, the user may recognize the time at which the course will be completed, and then accurately make a plan to return to the wish tower 3 after that time elapses. After providing the input through the execution part 120, the user may immediately leave the wish tower 3 and carry out personal schedules.

[0424] Referring to FIG. 23-(d), when an input is provided through the execution part 120, the locker 12 of the washing machine 1 or the dryer 2 for which the input is provided through the power part 110 may fix the door 11 to the cabinet 10 to block the opening from being arbitrarily opened.

[0425] The display part 150 of the washing machine 1 or the dryer 2 for which the input is provided through the power part 110 may display state information about the course that is being executed.

[0426] The state information may include one or more of a guide text indicating that the course is being executed and the remaining time.

[0427] Once an input is provided through the execution part 120, the laundry treatment device according to the present disclosure may execute the selected course. For example, when the course is a washing course, water supply may start immediately, or the drum may rotate to agitate the laundry and then the water supply may start. When the course is a drying course, a blower fan may rotate or a compressor may be driven.

[0428] In the case where it is sensed that the door 11 is not closed, the course may be executed after the door 11 is closed.

[0429] FIG. 24 illustrates an embodiment of a control method of the laundry treatment device according to the present disclosure implemented on an integrated panel, and FIG. 25 illustrates an embodiment of the control method of the laundry treatment device according to the present disclosure implemented on a mini panel.

[0430] Since the integrated panel and the mini panel only differ in structure but retain the configuration of the control panel 100, the above-described control method may be applied as it is. Therefore, a description with reference to the figures is omitted.

[0431] FIG. 26 illustrates an embodiment of the control method applied when the laundry treatment device according to the present disclosure is provided as an integrated device.

[0432] First, the integrated device 4 may perform both a washing course and a drying course with a single drum 30.

[0433] Therefore, the weight information may include the execution time of the washing course and the execution time of the drying course.

[0434] When an input is provided through the power part 110, one or more of the execution time of the washing course and the execution time I2 of the drying course corresponding to the sensed weight of laundry may be displayed first.

[0435] Of course, when the input is provided through the power part 110, both the execution time of the washing course and the execution time of the drying course corresponding to the sensed weight of laundry may be displayed. In this case, the user may be confused about whether the currently executed function is a washing mode or a drying mode.

[0436] Therefore, when an input is provided through the power part 110, the laundry treatment device according to the present disclosure may first determine one of the washing mode and the drying mode, and then display one of the execution time of the washing course and the execution time of the drying course.

[0437] Referring to FIG. 26-(a), a user may provide an input through the power part 110. When the input is provided through the power part 110, the integrated panel 100d may display booting information G1 on the display part 150.

[0438] Referring to FIG. 26-(b), the controller may control the driver 40 to rotate the drum 30 to sense the weight of laundry. The display part 150 may display sensing information G2 indicating that the weight of laundry is being measured.

[0439] The sensing information G2 may include one or more of a pictogram, a hologram, an icon, or a guide text indicating that the controller is currently sensing the weight of laundry.

[0440] Referring to FIG. 26-(c), when the controller senses the weight of laundry, the display part 150 may display the weight information I.

[0441] The controller may first display a washing execution time I21 for performing the washing course. That is, when an input is provided through the power part 110, the controller may first set a washing mode in which the washing course is performed.

[0442] The display part 150 may display washing mode information M1 indicating that the integrated device 4 of the present disclosure is set to perform the washing course.

[0443] The display part 150 may include a main display area D where the state of the selected mode between the washing mode and the drying mode is displayed.

[0444] The main display area D may be displayed in the largest area inside the display part 150 such that the user may intuitively recognize the currently set mode.

[0445] In the case of the washing mode, course information C related to the washing course may be displayed in the main display area D. At the same time, the controller 150 may first display the expected washing execution time I21 required to perform the washing course as the weight information I.

[0446] The display part 150 may display, on one side of the main display area D, a drying switch area M2 configured to receive, from the user, a drying switch command for switching the laundry treatment device to the drying mode to perform the drying course.

[0447] Further, when the integrated device controls even the mini device 5, a mini switch area M3 configured to receive a mini switch command for switching to a mini mode in which the control panel 100 receives an command for controlling the mini wash may be displayed on the opposite side of the main display area D.

[0448] Thus, the user may select the switch areas M2 and M3 to select the laundry treatment device controlled by the control panel 100, and determine which function of a device among the washing machine 1, the dryer 2, and the mini device 5 will be performed.

[0449] The user may want to perform the drying course through the integrated device 4. In this case, the user may select the drying switch area M2 to switch the integrated device 4 to the drying mode for performing the drying course.

[0450] The selection of the drying switch area M2 may correspond to the user inputting a selection command to select the washing course as the drying course.

[0451] The selection of the drying switch area M2 is the same as the user selecting the course selection part 130, and therefore the switch areas M2 and M3 may be included in the course selection part 130.

[0452] Referring to FIG. 26-(d), when the device is switched to the drying mode, the display part 150 may display drying mode information M2, which indicates that the integrated device 4 of the present disclosure is set to the drying mode in which the drying course is performed.

[0453] Further, the control panel 100 may change the expected washing execution time I21 to the expected drying execution time I22 to be displayed in the main display area D of the display part 150.

[0454] In addition, the course name or settings may change from the washing course C1 to the drying course C2 and displayed in the main display area D.

[0455] However, when both the washing and drying courses include a standard course, the text corresponding to the standard course may remain the same.

[0456] Therefore, when an input is provided through the power part 110, the display part 150 may first display mode information M1 indicating that the laundry treatment device is set to the washing mode for performing the washing course, along with the weight information indicating the expected washing execution time I21 for the washing course before an input is provided through the execution part 120.

[0457] At this time, when the user switches the integrated device 5 to the drying mode, the mode information on the display part 150 may change to drying mode M2, and the weight information may change to the expected drying execution time I22. Thereby, the user may recognize that the laundry treatment device is currently set to the drying mode and that the information displayed on the display part 150 corresponds to the drying course.

[0458] Similarly, when the user switches the device back to the washing mode or to the mini device, the expected time in the weight information displayed on the display part 150 may be changed to the execution time of the washing course or mini course. As a result, the user may accurately identify the mode to which the laundry treatment device is set and the execution time of the course in that mode without confusion.

[0459] The display parts of the weight information and mode information may all be performed while the door 11 is unlocked to be opened at any time.

[0460] FIG. 27 illustrates an embodiment in which the laundry treatment device according to the present disclosure senses the weight of laundry in the drying course in a different manner from the washing course.

[0461] When configured as an integrated device 5, the laundry treatment device according to the present disclosure may sense the weight of laundry differently when set to the drying mode for execution of the drying course than when set to the washing mode for execution of the washing course.

[0462] For example, when set to the drying mode for execution of the drying course, the laundry treatment device according to the present disclosure may sense the weight of the laundry more precisely than when set to the washing mode for execution of the washing course.

[0463] Specifically, in the washing mode, differences in laundry weight cause much smaller variations in the washing course execution time than in the drying mode for the following reason.

[0464] When washing laundry with water and detergent, the washing force by which the laundry treatment device removes foreign substances from the laundry with water and detergent acts more strongly than the increase in laundry weight. Even a large amount of laundry, when fully immersed in water, is exposed to detergent, allowing chemical reactions to the detergent to occur immediately. Further, when the drum 30 rotates, physical force is applied to the entire laundry, regardless of the amount of the laundry.

[0465] However, when laundry is dried with hot air, the drying force by which the laundry treatment device removes moisture from the laundry acts much weaker than the increase in weight of the laundry. In other words, the drying force that removes moisture from the laundry depends on the amount of air supplied into the drum and the temperature of the air. Since the performance of the compressor and the capacity of the fan are predetermined, the amount of air and the temperature of the air cannot vary greatly. In this case, as the weight of the laundry increases, the volume of the laundry may increase, reducing the proportion of the area of the laundry exposed to hot air and increasing the required drying time.

[0466] As a result, when drying 1 kg and 2 kg of laundry, the difference in execution time is much larger than when washing 1 kg and 2 kg of laundry.

[0467] Therefore, the laundry treatment device according to the present disclosure needs to sense the weight of the laundry more precisely in the drying mode to secure sufficient drying time to ensure drying performance for large loads of laundry and to significantly reduce drying time for small loads of laundry to prevent th laundry from being over-dried.

[0468] Thus, when the laundry treatment device according to the present disclosure is configured as the integrated device 5, it may sense laundry more precisely in the drying mode than in the washing mode.

[0469] For example, even when the weight of the laundry has been sensed in the washing mode, the laundry treatment device according to the present disclosure may additionally sense the weight of the laundry when switched to the drying mode.

[0470] That is, when switched from the washing mode to the drying mode, the laundry treatment device may additionally sense the weight of the laundry. Thereby, the weight of the laundry may be sensed more accurately. As a result, the execution time of the drying course, the RPM and operation time of the fan, and the RPM and operation time of the compressor may be systematically adjusted according to changes in weight of laundry in the drying mode.

[0471] Referring to FIG. 27-(a), when configured as the integrated device 4, the laundry treatment device according to the present disclosure is automatically set to the washing mode while displaying booting information G1 on the display part 150 when an input is provided through the power part 110.

[0472] Referring to FIG. 27-(b), the laundry treatment device according to the present disclosure may sense the weight of the laundry, and the display part 150 may display sensing information G2 indicating the sensing state of the weight.

[0473] Referring to FIG. 27-(c), before an input is provided through the execution part 120, the laundry treatment device may already display weight information I on the display part 150. The weight information I may include an expected washing execution time I21 for performing the washing course based on the sensed weight of laundry.

[0474] To perform the drying course using the integrated device 5, the user may provide an input through the switching mode area M2 on the control panel 100 to switch the integrated device 5 to the drying mode.

[0475] Referring to FIG. 27-(d), when the integrated device 5 is switched to the drying mode, the laundry treatment device may additionally sense the weight of the laundry.

[0476] In this case, the display part 150 may display additional sensing information G21 indicating that the weight of the laundry is being additionally sensed. Unlike the initial sensing information G1, the additional sensing information G21 may include content indicating that the weight of the laundry is sensed more precisely. For example, it may include the term "Precise Measurement."

[0477] Referring to FIG. 27-(e), the display part 150 may display the re-measured, more precise weight information I. The weight information I may include the expected execution time I22 for performing the drying course based on the precisely sensed weight of the laundry.

[0478] Even when the washing machine 1 and the dryer 2 are manufactured according to the same specifications, the dryer 2 may sense the weight of the laundry more precisely when performing the drying course than when the washing machine 1 performs the washing course.

[0479] Hereinafter, a description will be given of an embodiment in which the dryer 1 precisely senses the weight of the laundry to perform the drying course or the integrated device 5 precisely senses the weight of the laundry when switched to the drying mode.

[0480] FIG. 28 illustrates one embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry.

[0481] FIG. 28-(a) illustrates sensing the weight of laundry when the laundry treatment device according to the present disclosure is configured as the washing machine 1 or when the integrated device 4 is set to the washing mode.

[0482] FIG. 28-(b) illustrates sensing the weight of laundry more precisely when the laundry treatment device according to the present disclosure is configured as the dryer 2 or when the integrated device 4 is set to the drying mode.

[0483] Referring to FIG. 28-(a), when the laundry treatment device according to the present disclosure is configured as the washing machine 1 or when the integrated device 4 is set to the washing mode, the drum 30 may rotate by an angle b. After rotating by the angle b, the drum 30 may stop and then return to its original position.

[0484] The angle b may be less than 90°.

[0485] Referring to FIG. 28-(b), when the laundry treatment device according to the present disclosure is configured as the dryer 2 or when the integrated device 4 is set to the drying mode, the drum 30 may rotate by an angle c, larger than the angle b.

[0486] That is, to sense the weight of the laundry precisely, the laundry treatment device according to the present disclosure may rotate the drum by a greater angle and then return the drum from the greater angle, and may thus acquire information about the current over a longer period.

[0487] As a result, the laundry treatment device according to the present disclosure may sense the weight of the laundry more precisely.

[0488] The angle c may be set less than 360°, less than 180°, and less than 90°, but may be set greater than the angle b. That is, in the drying course, the drum rotates more than in the washing course to sense laundry weight more precisely.

[0489] That is, in the drying course, the drum may be rotated more than in the washing course to precisely sense the weight of the laundry.

[0490] FIG. 29 illustrates another embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry.

[0491] FIG. 29(a) illustrates sensing the weight of laundry when the laundry treatment device according to the present disclosure is configured as the washing machine 1 or when the integrated device 4 is set to the washing mode. FIG. 29-(b) illustrates sensing the weight of laundry more precisely when the laundry treatment device according to the present disclosure is configured as the dryer 2 or when the integrated device 4 is set to the drying mode.

[0492] Referring to FIG. 29-(a), when the laundry treatment device according to the present disclosure is configured as the washing machine 1 or when the integrated device 4 is set to the washing mode, the drum 30 may rotate by an angle b. After rotating by the angle b, the drum 30 may stop and then return to its original position.

[0493] The angle b may be less than 90°

[0494] Referring to FIG. 29(b), when the laundry treatment device according to the present disclosure is configured as the dryer 2 or when the integrated device 4 is set to the drying mode, the drum 30 may rotate by an angle d, smaller than angle b.

[0495] That is, to sense the weight of the laundry precisely, the laundry treatment device according to the present disclosure may rotate the drum 30 by a smaller angle and stop. In the case of the integrated device 4, the weight of the laundry has already been sensed in the washing mode, additional sensing of the laundry is sufficient to achieve precise weight sensing. Therefore, the drum 30 does not rotate the drum 30 excessively but rotates the drum only by a smaller angle to check any difference from the initially sensed weight of the laundry. Additionally, the laundry treatment device according to the present disclosure may further shorten the time required to rotate and stop he drum 30, thereby preventing weight sensing from causing delays in the drying course.

[0496] When the additionally sensed weight differs from the initial weight, the laundry treatment device according to the present disclosure may perform additional weight sensing, or may determine the weight of the laundry sensed later as the final weight of the laundry. This may prevent delays caused by laundry weight sensing and reasonably increase the reliability of the additionally sensed weight of the laundry.

[0497] In the case of the dryer 1, laundry is likely to be wet with water. Therefore, even for the same volume, the laundry weighs relatively more. Accordingly, the drum 30 may be rotated less to prevent the laundry from rolling or the moisture contained in the laundry from being abruptly released. Thus, unlike the washing course, the drying course may use a smaller rotation angle of the drum to sense the weight of the laundry more precisely.

[0498] FIG. 30 illustrates yet another embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry.

[0499] When the laundry treatment device according to the present disclosure is switched to the drying mode, or when the dryer receives an input from the power part 110, the drum 30 may be rotated at least one full revolution.

[0500] The drum 30 may be rotated at least one full revolution to remove some of the moisture contained in the laundry to accurately sense the weight of the wet laundry, or the driver 40 may receive current for a longer period to sense the weight of the laundry more precisely.

[0501] Precise weight sensing by the dryer or in the drying mode is very likely to further shorten the execution time of the drying course, and therefore the drum may be rotated significantly more than in the washing machine or the washing mode.

[0502] In this case, the drum 30 may be rotated at a speed sufficient to allow the laundry to stick to the inner wall of the drum for at least one full revolution. Thereby, some of the moisture in the laundry may be removed and the actual weight of the laundry may be sensed precisely.

[0503] FIG. 31 illustrates still another embodiment in which the laundry treatment device according to the present disclosure precisely senses the weight of laundry.

[0504] FIGS. 31-(a) to 31-(e) illustrate the overall process of sensing the weight of laundry when the laundry treatment device according to the present disclosure is configured as the dryer 2 or when the integrated device 4 is set to the drying mode.

[0505] As shown in the figures, when the laundry treatment device according to the present disclosure is configured as the dryer 2 or when the integrated device 4 is set to the drying mode, laundry weight sensing may be performed twice consecutively.

[0506] That is, when the drum is rotated by angle b by the washing machine or in the washing mode to sense the weight of the laundry once, the drum 30 may be rotated by the same angle b by the dryer or in the drying mode to sense the weight of the laundry two or more times.

[0507] In other words, according to the present disclosure, in the dryer or drying mode, the weight of the laundry may be sensed in the same manner as in the washing machine or washing mode, but only the number of times of the sensing may be increased. Thereby, the laundry treatment device may implement the same sensing method and calculation formula, preventing overload of the controller while improving the precision of the weight sensing by increasing the number of times of the sensing.

[0508] FIG. 32 illustrates an embodiment in which the laundry treatment device according to the present disclosure selectively performs precise detection according to the detected weight of laundry.

[0509] In the case where the sensed weight of the laundry is greater than a reference value when the laundry treatment device according to the present disclosure is configured as the dryer 2 or when the integrated device 4 is set to the drying mode, precise sensing may be performed. In the case where the sensed weight of the laundry is less than or equal to the reference value, the precise sensing may be skipped.

[0510] For example, the reference value may be set to a middle value of the drying capacity allowed by the laundry treatment device according to the present disclosure. For example, when the drying capacity is 9 kg, the reference value may be set to 4 to 5 kg.

[0511] When the sensed weight of the laundry is large, the drying time may increase significantly. Therefore, precise sensing may be performed to additionally check whether the weight of the laundry is actually large.

[0512] FIG. 32-(a) illustrates the process of sensing the weight of the laundry by the dryer 2 or in the drying mode when the weight of the laundry loaded into the laundry treatment device of the present disclosure is less than or equal to the reference value. This process may use the same method as used to sensing the weight of the laundry by the washing machine 1 or in the washing mode.

[0513] Further, in the case where the weight of the laundry sensed in the washing mode corresponds to the reference value when the laundry treatment device according to the present disclosure, precise sensing may be skipped even when the device is switched to the drying mode.

[0514] FIG. 32-(b) illustrates the process of sensing the weight of the laundry by the dryer 2 or in the drying mode when the weight of the laundry loaded into the laundry treatment device according to the present disclosure is greater than or equal to the reference value.

[0515] When a large amount of laundry is sensed, into the laundry treatment device according to the present disclosure may rotate the drum by an angle c, greater than angle b. That is, when the sensed weight of the laundry is large, the laundry treatment device according to the present disclosure may determine to perform precise sensing. When precise sensing is performed, the device may rotate the drum by a larger angle and return the drum to the original position thereof from the larger angle, thereby acquiring information about the current from the driver 40 over a longer period.

[0516] As a result, the laundry treatment device according to the present disclosure may sense the weight of the laundry more precisely.

[0517] The angle c may be set less than 360°, less than 180°, and less than 90°, but may be set greater than the angle b. That is, in the drying course, the drum rotates more than in the washing course to sense laundry weight more precisely.

[0518] Even when the laundry treatment device according to the present disclosure is configured as a dryer, if the initially sensed weight of the laundry is large, the device may rotate the drum 30 more than in the initial sensing to sense the weight of the laundry more precisely.

[0519] FIG. 33 illustrates another embodiment in which the laundry treatment device according to the present disclosure selectively performs precise detection according to the detected weight of laundry.

[0520] FIG. 33-(a) illustrates the process of sensing the weight of the laundry by the dryer 2 or in the drying mode when the weight of the laundry loaded into the laundry treatment device of the present disclosure is less than or equal to the reference value. This process may use the same method as used to sensing the weight of the laundry by the washing machine 1 or in the washing mode.

[0521] Further, when the laundry treatment device according to the present disclosure is configured as the integrated device 4, if the weight of the laundry sensed in the washing mode corresponds to the reference value, precise sensing may be omitted even after the device is switched to the drying mode.

[0522] FIG. 33-(b) illustrates the process of sensing the weight of the laundry by the dryer 2 or in the drying mode when the weight of the laundry loaded into the laundry treatment device according to the present disclosure is greater than or equal to the reference value.

[0523] When the weight of the laundry is large in the dryer or drying mode, the drum 30 may rotate by the same angle b or by a larger angle c, and the weight of the laundry may be sensed two or more times.

[0524] In other words, according to the present disclosure, in the dryer or drying mode, the weight of the laundry may be sensed in the same manner as in the washing machine or washing mode, but only the number of times of the sensing or both the number of times of the sensing and the rotation angle may be increased.

[0525] Accordingly, when the sensed weight of the laundry is large, the laundry treatment device according to the present disclosure may determine to perform precise sensing. When precise sensing is performed, the device may rotate the drum more times, with each rotation angle set either the same as when the weight is equal to a reference value or set greater than when the weight is equal to the reference value.

[0526] As a result, the laundry treatment device according to the present disclosure may sense the weight of the laundry more precisely.

[0527] FIG. 34 illustrates an embodiment in which the laundry treatment device according to the present disclosure senses the moisture content of laundry.

[0528] FIG. 34(a) illustrates a case where the same weight of the laundry is loaded in a dry state, while FIG. 34-(b) illustrates a case where the same weight of the laundry is loaded in a wet state.

[0529] The laundry treatment device of the present disclosure may determine whether the laundry is wet or dry based on the rotation of the drum. When the laundry is wet, the device may also calculate the moisture content of the laundry.

[0530] For example, even when wet laundry and dry laundry have the same weight, the volumes thereof may differ. In the case of the dry laundry, the proportion of the weight contributed by the laundry itself is large, and thus the volume is large. In the case of the wet laundry, the proportion of the weight contributed by the laundry is small, and thus the volume is small.

[0531] Therefore, when the drum 30 is rotated by the same angle, the distance between the center of gravity of the laundry and the center of gravity of the drum corresponds to a first length (r1) for the dry laundry, while the distance between the center of gravity of the laundry and the center of gravity of the drum corresponds to a second length (r2), much longer than the first length (r1), for wet laundry.

[0532] Consequently, the torque Tload applied by the wet laundry to the drum is set greater than the torque Tload applied by the dry laundry.

[0533] The controller of the laundry treatment device according to the present disclosure may measure the weight in the drum and the torque generated on the drum to determine whether the laundry is dry or wet.

[0534] Moreover, in the case of the wet laundry, the controller of the laundry treatment device according to the present disclosure may immediately determine the moisture content of the laundry based on the torque difference caused by the moisture. For this purpose, the controller may have a table correlating torque with changes in weight and moisture content.

[0535] As shown in the figure, the laundry treatment device according to the present disclosure may rotate the drum 30 with a constant force (Te) and determine whether the laundry is dry or wet based on at least one of the difference in angle of rotation of the drum 30 or the difference in torque generated when the drum 30 returns to the original position thereof. When the laundry is wet laundry, the device may also calculate the moisture content.

[0536] In the case of the dry laundry, the drum 30 rotates by angle a when a specific force (Te) is applied to rotate the drum 30. In the case of the wet laundry, even when the weight of the laundry is the same as that of the dry laundry, the drum 30 rotates by angle b smaller than the angle a when the specific force (Te) is applied to rotate the drum 30. Further, in the case of the wet laundry, the torque applied by the laundry to the drum 30 differs from the case of the dry laundry due to the center of gravity of the wet laundry different from that of the dry laundry.

[0537] Based on this principle, the laundry treatment device according to the present disclosure may rotate the drum less than one full revolution to determine whether the laundry is dry laundry or wet laundry and to calculate the moisture content.

[0538] As a result, while rotating the drum less than one full revolution to sense the weight of the laundry, the laundry treatment device according to the present disclosure may not only sense the weight of the laundry but also calculate whether the laundry is wet and the moisture content of the laundry.

[0539] FIG. 35 illustrates that the laundry treatment device according to the present disclosure sets the execution time of the drying course differently according to the moisture content of laundry.

[0540] When the weight of the laundry is the same, the laundry treatment device of the present disclosure may set a different execution time of the drying course for the wet laundry than for the For the dry laundry. If the moisture content of the laundry varies, the device may also set a different execution time of the drying course even when the weight of the laundry is the same.

[0541] Accordingly, even when the weight of the laundry is the same, the laundry treatment device according to the present disclosure may set a longer execution time of the drying course for wet laundry than for dry laundry. If the moisture content differs, the execution time of the drying course may be set longer for laundry with higher moisture content even when the weight of the laundry is the same.

[0542] FIG. 35-(a) illustrates a case where the laundry is sensed as wet, and FIG. 35-(b) illustrates a case where the laundry is sensed as dry with the same weight as in FIG. 35-(a).

[0543] The display part 150 of the laundry treatment device according to the present disclosure may display weight information I.

[0544] The weight information I may include the weight I1 of the laundry and the execution time I2 for treating the laundry.

[0545] The display part 150 may display wet laundry information L2 when the laundry is wet laundry, and dry information L1 when the laundry is dry laundry.

[0546] The wet information L2 may include an indication of the state of the laundry such as "wet" or "damp" depending on the moisture content, and the dry information L1 may include an indication of the state of the laundry such as "dry clothing."

[0547] When the laundry is sensed as wet laundry, the display part 150 may display the wet information L2. In this case, it may display a wet laundry drying time L23 for treatment of wet laundry as a time significantly longer than a dry laundry drying time L24 for treatment of dry laundry.

[0548] In other words, although the weight L1 of the laundry is 3 kg, the user may recognize that the wet laundry drying time L23 and the dry laundry drying time L24 displayed on the display part are different, and that the wet laundry drying time is longer than the dry laundry drying time.

[0549] In this way, the laundry treatment device according to the present disclosure may set a longer execution time for wet laundry to prevent incomplete drying of the laundry, and may set a shorter execution time for dry laundry to prevent over-drying of the laundry.

[0550] When the laundry is sensed as wet laundry, the laundry treatment device according to the present disclosure may further perform one of the above-described embodiments of precise weight sensing, not only to re-check whether the laundry is wet laundry but also to accurately calculate the moisture content when the laundry is wet laundry.

[0551] In this case, the display part 150 may display the wet laundry information L2 and may also display the additional sensing information G21 indicating that the laundry is undergoing precise sensing.

[0552] It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit and scope of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.

Claims

1. A laundry treatment device comprising: a cabinet having a front opening; a door coupled to the cabinet to open and close the opening; a sensor configured to sense whether the door has closed the opening; a locker configured to lock the door to the cabinet; a drum accommodated in the cabinet to accommodate laundry; a driver connected to the drum to rotate the drum; and a control panel comprising: a power part configured to receive an input of a power-on command to supply power; a selection part configured to receive an input of a selection command to select one of a washing course and a drying course; a display part configured to display weight information including execution times of the washing course and the drying course; and an execution part configured to receive an input of an execution command to execute a course for treatment of the laundry, wherein: the driver is configured to rotate the drum with the locker unlocked when the input is received through the power part; the display part is configured to display the weight information after the drum starts rotating; and the execution part is configured to receive the input of the execution command while the display part is displaying the weight information after the drum starts rotating, wherein the display part is configured to first display the execution time of the washing course, and then display the execution time of the drying course when the selection command for selecting the drying course is input through the selection part.

2. The laundry treatment device of claim 1, wherein the driver is provided to rotate the drum when the input is received through the power part or when the door closes the opening, wherein the display part displays the execution time of the washing course after the drum rotates.

3. The laundry treatment device of claim 1, wherein the display part is provided to display the execution time of the washing course and the execution time of the drying course differently when a weight of the laundry accommodated in the drum changes.

4. The laundry treatment device of claim 1, wherein the display part is provided to display the execution time of the washing course or the drying course while the locker leaves the door unlocked.

5. The laundry treatment device of claim 1, wherein, based on that a weight of the laundry accommodated in the drum remains the same and that moisture content of the laundry changes, the display part is provided to display the execution time of the drying course differently.

6. The laundry treatment device of claim 5, wherein the display part is provided to display the execution time of the drying course after the drum rotates and stops two or more times.

7. The laundry treatment device of claim 6, wherein, based on that the input is received through the power part or that the door closes the opening, the display part is provided to display the execution time of the washing course after the drum rotates, wherein, based on that the input of the selection command to select the drying course is received through the selection part, the display part is provided to display the execution time of the drying course after the drum rotates additionally.

8. The laundry treatment device of claim 7, wherein, based on that the input is received through the power part or that the door closes the opening, the driver is provided to rotate the drum less than one full revolution, wherein, based on that the input of the selection command to select the drying course is received through the selection part, the driver is provided to rotate the drum less than one full revolution additionally.

9. The laundry treatment device of claim 8, wherein the driver is provided to rotate the drum such that the number of times of the drum rotates and stops after the selection part is the input is greater than the number of times of the drum rotates and stops after the power part is input or the door closes the opening.

10. The laundry treatment device of claim 8, wherein the driver is provided to rotate rotate the drum such that at least one of a rotation angle or a rotation speed of the drum after the selection part is the input is different from the at least one of the rotation angle or the rotation speed of the drum after the power part is the input or the door closes the opening.

11. The laundry treatment device of claim 8, wherein the driver is provided to rotate the drum such that a rotation time of the drum after the selection part is input is shorter than a rotation time of the drum than after the power part is input or the door closes the opening.

12. The laundry treatment device of claim 8, wherein the driver is provided to rotate the drum such that a rotate time of of the drum after the selection part is input is longer than a rotate time of the drum than after the power part is input or the door closes the opening.

13. The laundry treatment device of claim 1, wherein, based on that an amount of the laundry accommodated in the drum is greater than a reference amount: the driver is provided to rotate the drum more than when the amount of the laundry accommodated in the drum is less than or equal to the reference amount; and the display part is provided to display the execution time of the washing course or the drying course after the rotation of the drum is completed.

14. The laundry treatment device of claim 13, wherein the driver is provided to rotate the drum such that the number of times the drum rotates and stops when the amount of the laundry accommodated in the drum is greater than the reference amount is greater than when the amount of the laundry accommodated in the drum is less than the reference amount.

15. The laundry treatment device of claim 1, further comprising: a tub arranged to accommodate the drum; a water supply part arranged to supply water to the tub; a drainage part arranged to drain water from the tub; a circulation duct connected to the tub to circulate air inside the drum; and a heat exchanger disposed inside the circulation duct to exchange heat with the air.

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