Patent Publication Number: US-2012023681-A1

Title: Laundry machine and method for controlling the same

Description:
TECHNICAL FIELD 
     The present invention relates to laundry machines, and more particularly, to a laundry machine in which a real time is displayed and of which operation is controlled by using a real time and saved electricity at a midnight, and a method for controlling the same. 
     BACKGROUND ART 
     In general, the laundry machine removes various kinds of contaminants from clothes and beddings by using a softening action of detergent, friction of water flow and impacts applied to laundry caused by rotation of a pulsator or a drum. Current full automatic laundry machine carries out a series of courses of washing, rinsing, spinning, and so on automatically without intermittent handling of a user. 
     It is a current trend that demands for the drum type laundry machine increase gradually, which, not only enables to reduce a total height, but also does not cause problems of entangling and crumpling of the laundry compared to a pulsator type laundry machine in which a washing tub rotates in an upright state. 
     A structure of the drum type laundry machine will be described briefly. The drum type laundry machine is provided with a body cabinet which forms an exterior of the drum type washing machine, a tub in the body cabinet supported by dampers and springs for holding washing water, and a cylindrical drum in the tub for placing the laundry therein, wherein the drum has driving power applied thereto by a driving unit for washing the laundry placed therein. 
     The laundry machine is provided with a scheduling function for operating the laundry machine at a preset time by a user s selection. That is, once the user sets an operation time, the laundry machine performs washing operation as the preset operation time comes. 
     In a case of the scheduling function of the related art laundry machine, a schedule is set to start washing (or drying) operation after a time period from a time point when the operation is set. 
     Therefore, the user is required to set a schedule such that an operation starting time is set by subtracting the present time when the user makes the operation schedule from the operation starting time, which requires the user s personal calculation that is inconvenient and cumbersome to the user. 
     In the meantime, recently, a system is put into practice, in which cheap electricity is used at a midnight period or a selected time period, avoiding a time period when consumption of the electricity is very high (for an example, midnight electricity, saving electricity, and so on, and hereafter called as saving electricity). 
     In order to make the scheduled operation in the saving electricity time period, there is inconvenience of producing the scheduled operation time taking both the scheduled operation time and the saving electricity time period into account. 
     Moreover, since a time period of the saving electricity varies with countries, regions, and so on, the user is required to know each of the saving electricity time periods, and has inconvenience of producing and setting the scheduled operation time. 
     In the meantime, the saving electricity time period is mostly a midnight time period. Therefore, if the laundry machine is used in the saving electricity time period, operation noise from the laundry machine gives inconvenience to the user as well as neighbors. 
     DISCLOSURE OF INVENTION 
     Technical Problem 
     To solve the problems, an object of the present invention is to provide a laundry machine which can display a real time and a scheduled operation is possible according to the real time, and a method for controlling the same. 
     Another object of the present invention is to provide a laundry machine which can make automatic setting of a saving electricity time period according to setting of a country or a region in which the laundry machine is used, and a method for controlling the same. 
     Another object of the present invention is to provide a laundry machine which can perform a scheduled operation of the laundry machine by using inexpensive saving electricity provided in a specific time period, such as a midnight time period, and a method for controlling the same. 
     Another object of the present invention is to provide a laundry machine in which a course of washing courses of the laundry machine, which generates noise heavily, is omitted or performed after a midnight time period in a case a scheduled operation is performed in the midnight time period. 
     Solution to Problem 
     To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a laundry machine includes a case, a tub mounted in the case, a drum rotatably mounted in the tub, a driving unit for rotating the drum, and a control unit for controlling scheduled operation of the driving unit according to a real time. 
     Preferably, the control unit has a saving electricity mode for performing a washing course in a preset saving electricity supply time period according to setting of the scheduled operation. 
     Preferably, the control unit includes a real time timer for producing the real time. 
     Preferably, the control unit has a supplementary power unit for driving the real time timer. 
     Preferably, the control unit has a data base having a saving electricity time period of each region stored therein for performing the washing course according to the saving electricity time period stored in the data base. 
     Preferably, the laundry machine further includes an operation unit for inputting the real time period and the saving electricity time period and a display unit for displaying the real time. 
     Preferably, the operation unit includes a saving electricity scheduled operation button for setting the saving electricity scheduled operation in which saving electricity time period is used. 
     Preferably, the display unit includes a saving electricity scheduled operation display unit for displaying a saving electricity mode scheduled operation in which the saving electricity time period is used. 
     Preferably, the saving electricity time period is a midnight time period. 
     Preferably, the control unit has a midnight mode for performing the scheduled operation in the midnight time period in which the saving electricity is supplied. 
     Preferably, the control unit omits a spinning course from washing courses having the spinning course if the midnight mode scheduled operation is set. 
     Preferably, the laundry machine further includes an operation unit for inputting the real time period and the saving electricity time period and a display unit for displaying the real time. 
     Preferably, the control unit includes a midnight mode scheduled operation button for setting the midnight mode scheduled operation in which the midnight time period is used. 
     Preferably, the display unit includes a midnight mode scheduled operation display unit for displaying the midnight mode scheduled operation in which the midnight time period is used. 
     Preferably, the display unit includes a spinning display unit for displaying omission of the spinning course in the midnight mode scheduled operation. 
     Preferably, the control unit has a barrel washing mode for performing barrel washing in the midnight time period in which the saving electricity is supplied. 
     Preferably, the laundry machine further includes an operation unit for inputting the real time period and the saving electricity time period and a display unit for displaying the real time. 
     Preferably, the operation unit includes a barrel washing scheduled operation button for setting barrel washing mode scheduled operation which uses the midnight time period. 
     Preferably, the display unit includes a barrel washing mode scheduled operation display unit for displaying the barrel washing mode scheduled operation in which the barrel washing is performed in the midnight time period. 
     In another aspect of the present invention, a method for controlling a laundry machine includes the steps of setting a real time in which a real time is set upon application of power, setting a saving electricity time period in which a saving electricity time period is set according to the real time set thus, and performing scheduled operation in which washing scheduled operation is performed, which is set in the saving electricity time period set thus. 
     Preferably, the step of performing scheduled operation includes a washing step in which washing operation is performed in the saving electricity time period. 
     Preferably, the saving electricity time period is a midnight time period, and the step of performing scheduled operation includes a washing step in which washing operation is performed excluding a spinning course in the saving electricity time period. 
     Preferably, the saving electricity time period is a midnight time period, and the step of performing scheduled operation includes a barrel washing step in which barrel washing operation is performed in the saving electricity time period. 
     Preferably, the step of setting a saving electricity time period includes the steps of setting a region at which the laundry machine is used, and producing a time for setting the saving electricity time period of the region at which the laundry machine is used. 
     Preferably, the saving electricity time period is produced from a data base having the saving electricity time period of the region at which the laundry machine is used. 
     In another aspect of the present invention, a method for controlling a laundry machine includes a scheduled operation determining step for determining whether scheduled operation is set or not, a saving electricity scheduled operation determining step for determining whether the scheduled operation set in the scheduled operation determining step is the saving electricity scheduled operation or not, if the scheduled operation is set in the scheduled operation determining step, a saving electricity time period waiting step for waiting until the saving electricity time period comes, if it is determined that the saving electricity scheduled operation determining step is the saving electricity scheduled operation, and a scheduled operation performing step for performing the scheduled operation set thus, if the saving electricity time period comes in the saving electricity time period waiting step. 
     Preferably, the scheduled operation and the saving electricity scheduled operation is set by a real time. 
     Preferably, the saving electricity time period is set according to a region at which the laundry machine is used. 
     Preferably, the method further includes a washing step for performing a preset washing step, if it is determined that the scheduled operation is not set in the scheduled operation determining step. 
     Preferably, the method further includes a waiting step for waiting until a preset scheduled operation time comes, and a scheduled operation performing step for performing the preset scheduled operation if the scheduled operation time comes in the waiting step, if it is determined that the scheduled operation is not the saving electricity scheduled operation in the saving electricity scheduled operation determining step. 
     Preferably, the method further includes a midnight mode determining step for determining whether the scheduled operation set thus is a midnight mode or not if the saving electricity time period comes after the saving electricity waiting step, and a scheduled operation performing step for performing the scheduled operation excluding a spinning course from washing courses, if the scheduled operation set thus is determined to be the midnight mode in the midnight mode determining step. 
     Preferably, the method further includes a washing step for performing washing courses according to the scheduled operation set thus, if it is determined that the scheduled operation set thus is not the midnight mode in the midnight mode determining step, and a tumbling step for performing tumbling at fixed intervals repeatedly after the washing step for preventing the laundry from crumpling. 
     Preferably, the scheduled operation determining step includes the step of determining whether the scheduled operation is a barrel washing scheduled operation of not. 
     Preferably, if it is determined that the scheduled operation is a barrel washing scheduled operation in the scheduled operation determining step, the scheduled operation determining step includes a washing water supply step for supplying washing water and detergent for barrel washing. 
     Preferably, if it is determined that the scheduled operation is not a barrel washing scheduled operation in the scheduled operation determining step, the washing water and the detergent is supplied and a barrel washing course is performed. 
     Preferably, the method further includes a waiting step for waiting until a scheduled operation time set thus comes, if it is determined that the scheduled operation is not the saving electricity scheduled operation in the saving electricity scheduled operation determining step, and a step for supplying washing water and detergent and performing a barrel washing course directly if the scheduled operation time period comes in the waiting step. 
     Advantageous Effects of Invention 
     The present invention has following advantageous effects. 
     Since the user can set a scheduled operation time with reference to a real time, the user can set the scheduled operation time readily without calculating the scheduled operation time. 
     The setting of the saving electricity time period according to country and region where the laundry machine is used, the scheduled operation time can be set readily without calculating the saving electricity time period separately. 
     By enabling the user to perform the scheduled operation by using the saving electricity in the midnight time period, the present invention permits the user to use inexpensive saving electricity. 
     By enabling the user to omit or perform a noise generating course if the midnight scheduled operation is performed, the inconvenience of user caused by the noise is resolved. 
     By enabling the user to perform the barrel washing by using the midnight time period saving electricity, power consumption required for the barrel washing can be reduced. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       The accompanying drawings, which are included to provide further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the principle of the disclosure. 
       In the drawings: 
         FIG. 1  illustrates a perspective view of a laundry machine in accordance with a preferred embodiment of the present invention. 
         FIG. 2  illustrates a longitudinal section of a laundry machine in accordance with a preferred embodiment of the present invention. 
         FIG. 3  illustrates a block diagram of a system of a laundry machine in accordance with a preferred embodiment of the present invention. 
         FIG. 4  illustrates a plan view of an operation panel of a laundry machine in accordance with a preferred embodiment of the present invention, schematically. 
         FIG. 5  illustrates a flow chart showing the steps of a method for setting a saving electricity time period to a laundry machine in accordance with a preferred embodiment of the present invention. 
         FIG. 6  illustrates a flow chart showing the steps of a method for setting a saving electricity time period according to an installation region to a laundry machine in accordance with a preferred embodiment of the present invention. 
         FIG. 7  illustrates a flow chart showing the steps of a method for making saving electricity scheduled operation of a laundry machine in accordance with a preferred embodiment of the present invention. 
         FIG. 8  illustrates a flow chart showing the steps of a method for making midnight mode scheduled operation of a laundry machine in accordance with a preferred embodiment of the present invention. 
         FIG. 9  illustrates a flow chart showing the steps of a method for making barrel washing scheduled operation of a laundry machine in accordance with a preferred embodiment of the present invention. 
     
    
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     Reference will now be made in detail to the specific embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. 
     In describing the present invention, names of elements are defined taking functions thereof into account. Therefore, it is required to understand that the names do not limit the elements technically. Moreover, the names of the elements may be called differently in this field of art. 
     A laundry machine in accordance with a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. 
     The present invention will be described taking a laundry machine as an example. However, a control unit and a control method for utilizing a real time and a saving electricity time period that is a main subject matter of the present invention is applicable to laundry dryers, and dishwashers other than the laundry machine. 
       FIG. 1  illustrates a perspective view of a laundry machine in accordance with a preferred embodiment of the present invention,  FIG. 2  illustrates a longitudinal section of a laundry machine in accordance with a preferred embodiment of the present invention, and  FIG. 3  illustrates a block diagram of a system of a laundry machine in accordance with a preferred embodiment of the present invention. 
     As shown, the laundry machine  100  includes a cabinet  10  which forms an exterior of the laundry machine  100 , a tub  30  in the cabinet  10  for holding washing water, a drum  50  mounted in the tub  30  to be rotatable in a shaft direction, a driving unit  70  for providing rotating power to the drum  50  to wash, rinse and spin laundry  1  in the drum  50 , a control unit  60  for controlling respective units to operate the laundry machine  100 , and an operation panel  20  for controlling respective units in association with the control unit  60 . 
     The cabinet  10  forms the exterior of the laundry machine  100 , and the respective units to be described later mounted to an outside or inside thereof. The cabinet  10  has a door  12  rotatably mounted to a front of the cabinet  10  for introducing the laundry  1 . 
     The tub  30  is provided to hold the washing water therein, has an enclosure opened toward the door  12  for holding the laundry  1  introduced through the door  12 . 
     The driving unit  70  is mounted to a rear of the tub  30 . The driving unit  70  having a motor rotates the drum  50 , and a rotation speed of the driving unit  70  is controlled by the control unit  60 . Detailed description of the driving unit  70  will be omitted since a structure, kinds of the driving unit  70  are well known to persons in this field of art, and a variety of embodiments are possible. 
     In the meantime, the tub  30  is elastically supported by springs  31  above the tub  30  and dampers  32  below the tub  30 . Accordingly, at the time vibration generated when the drum  50  rotates by the driving unit  70  transmits to the cabinet  10  through the tub  30 , the vibration is buffered and dampened by the springs  31  and the dampers  32 , thereby reducing transmission of the vibration to the cabinet  10  from the drum  50 . 
     Above the tub  30 , there are a water supply hose  33  for supplying water to the tub  30  from an external water source, a water supply valve  34  on the water supply hose  33  for controlling in/out of the water, and a detergent supply unit  35  for holding detergent such that the water being supplied through the water supply hose  33  is introduced to the tub  30  together with the detergent. In addition to this, the detergent supply unit  35  may have detergent provided thereto for washing of the laundry and washing of a barrel. 
     Below the tub  30 , there are a drain hose  36  and a drain pump  37  for draining the washing water used for washing and rinsing to an outside of the laundry machine  100 . 
     In the meantime, a circulating duct  40  is mounted to an outside of the tub  30 , for circulating air for drying course of the laundry machine  100 . That is, the circulating duct  40  is configured to draw air out of the tub  30 , heat the air, and return the air to the tub  30 , again. 
     The circulating duct  40  includes a drying duct  41  and a condensing duct  47 . The drying duct  41  has a heater  43  and a fan  45  for blowing hot air into the tub  30 . 
     The drying duct  41  and the condensing duct  47  are mounted to be in communication with each other, as well as with the drum  50 , and the tub  30  has an air inlet  38  for introduction of hot air thereto through the drying duct  41 , and an air outlet  39  for discharging air to the condensing duct  47 . 
     The condensing duct  47  has a water supplying unit  49  for supplying cooling water to the condensing duct  47  for condensing moisture in the air. 
     The drum  50  is rotatably mounted in the tub  30 , and has the laundry  1  introduced thereto through the door  12  held therein. The drum  50  has a plurality of drain holes  52  for in/out of water therethrough, and a plurality of lifts  54  for lifting and dropping the laundry  1  in the drum  50  when the drum  50  rotates. By the lifting and dropping of the laundry  1  with the lifts  54 , washing performance can be improved. 
     Referring to  FIG. 4 , the operation panel  20  on an upper side of the door  12  includes an operation unit  22  for controlling operation of the laundry machine  100  and a display unit  26  for displaying an operation state of the laundry machine  100 . The operation unit  22  and the display unit  26  controls operation of the laundry machine  100 , or displays the operation state of the laundry machine  100  in association with the control unit  60 . 
     The operation unit  22  has a plurality of buttons  23  and a rotary knob  24 . The buttons  23  and the rotary knob  24  which is inputting means for operating the laundry machine  100 , enables the user to input desired course and time by handling the buttons  23  and the rotary knob  24  when the user selects a washing time, setting of a scheduled operation, method of washing, and rinsing and spinning types. 
     The plurality of buttons  23  may include a saving electricity scheduled operation button  27   a  for using saving electricity, a midnight mode scheduled operation button  27   b  for operating the laundry machine  100  in a midnight period, a barrel washing button  27   c  for performing barrel washing in the midnight period, additionally. In the meantime, functions to be implemented by the saving electricity scheduled operation button  27   a , the midnight mode scheduled operation button  27   b , the barrel washing button  27   c  can be set by the rotary knob. 
     In the meantime, the control unit  60  controls the laundry machine  100  according to information received through the operation unit  22  to perform courses of washing, rinsing, or spinning or the barrel washing at a set time or a scheduled time. 
     The display unit  26  which displays information on the laundry machine  100  set at the operation unit  22  includes a plurality of LEDs and LCD arranged side by side for displaying various kinds of washing information for the user, such as a state of progress of washing, a remained time period, and so on with characters or codes by flashing or the LEDs, or on the LCD. 
     In a case saving electricity scheduled operation is set with the rotary knob  24  at the operation unit  22 , the display unit  26  may have a saving electricity scheduled operation display unit  28   a  additionally for informing the user that scheduled operation for using the saving electricity is set. The display unit  26  has a midnight mode scheduled operation display unit  28   b  for displaying that a spinning course is omitted, which generates much noise when the scheduled operation is progressed in the midnight. Owing to the spinning display unit  28   b , the user can notice that no spinning is progressed in the scheduled operation. The display unit  26  has a barrel washing display unit  28   c  for user s notice of the setting of the barrel washing in a case the barrel washing by utilizing the midnight mode is set. 
     The control unit  60  controls general operation of the laundry machine  100 , and operates the laundry machine  100  according to setting at the laundry machine  100 . That is, the control unit  60  controls general operation and preset scheduled operation at a specific time. 
     For this, the control unit  60  has a real time timer  62  for producing a real time according to user s setting, and a data base  66  having saving electricity time periods of stored therein for regions to be set by the user. The control unit  60  displays the saving electricity scheduled operation set by the user at the operation panel  20 . 
     In this instance, the real time timer  62  displays, not an operation time of the laundry machine  100  in the related art, but an actual time of the region where the laundry machine  100  is installed as well as times of respective courses of the laundry machine  100 . The real time timer  62  may have a supplementary power source unit  64  (for an example, a disposable dry battery, or a re-chargeable battery) mounted therein, additionally. If real time timer  62  has the supplementary power source unit  64  mounted therein, the real time timer  62  can be operable even if the power source unit which is a main power source of the laundry machine  100  is cut off. 
     The data base  66  has saving electricity time periods of each region and regions of each country or region stored therein, and the control unit  60  sets an operation time by using the saving electricity time period stored in the data base  66  in the case of saving electricity scheduled operation. 
     If the midnight mode scheduled operation is set, the control unit  60  can omit the spinning course in the scheduled operation. That is, after the washing and rinsing are finished, which come before the spinning course, the washing process can be stopped excluding the spinning course. The spinning course is omitted thus due to noise generated in the spinning course the most in the washing process of the laundry machine  100 . 
     The control unit  60  displays that the spinning course is omitted at the operation panel  20  if the midnight mode scheduled operation is set. In this instance, the operation panel  20  may display that additional rinsing and spinning courses are required. 
     In the meantime, if the user s setting is not the midnight mode, the control unit  60  may perform tumbling in which the drum is rotated periodically and repeatedly so that no crumple is formed at the laundry of which spinning is progressed. 
     If the user sets the barrel washing saving electricity scheduled operation, after filing the washing water and the detergent to the tub  30 , the control unit  60  may perform the barrel washing by rotating the drum  50  as the saving electricity time period comes. 
     The operation of the laundry machine in accordance with a preferred embodiment of the present invention will be described. It is required that respective units described below are understood with reference to the foregoing description and drawings. 
     The laundry machine  100  of the present invention is required to have a process in which a real time and a saving electricity time period for using saving electricity are set at an initial operation of the laundry machine  100 . 
     A method for setting the real time and the saving electricity time period at the initial operation of the laundry machine  100  will be described. 
     The setting of the saving electricity time period can be made by two methods; by personal input of a starting time and an end time of supply of the saving electricity, or by selecting a region at which the laundry machine  100  is installed from the data base in the control unit. 
     The method for setting a saving electricity time period by personal input of the saving electricity time period will be described.  FIG. 5  illustrates a flow chart showing the steps of a method for setting a saving electricity time period to a laundry machine in accordance with a preferred embodiment of the present invention. 
     Referring to  FIG. 5 , respective units of the laundry machine  100  are come into operation (S 110 ) as the user supplies power through a main power source of the laundry machine  100 . In this instance, the control unit  60  lets the user to set a real time of the laundry machine  100  at the display unit  26  of the operation panel  20  (S 120 ). 
     According to the real time the user inputs, an operation time of general scheduled operation, saving electricity scheduled operation, or a midnight scheduled operation is set. 
     Then, if the user finishes setting of an actual time, the control unit  60  displays input of a saving electricity time period at the display unit  26  of the operation panel  20 . Alike the actual time setting, the saving electricity time period can be input by handling a button  23  on the operation panel  20  (S 130 ). The input of the saving electricity time period can be set by inputting a starting time and an end time of the saving electricity time period. 
     A method for setting the saving electricity time period proper to a region where the laundry machine  100  is installed will be described.  FIG. 6  illustrates a flow chart showing the steps of a method for setting a saving electricity time period according to an installation region to a laundry machine in accordance with a preferred embodiment of the present invention. 
     Referring to  FIG. 6 , respective units of the laundry machine  100  are come into operation (S 210 ) as the user supplies power through a main power source of the laundry machine  100 . In this instance, the control unit  60  displays a region where the user of the laundry machine  100  uses the laundry machine  100  at the display unit  26  for the user to select the region (S 220 ). 
     In this instance, the control unit  60  can display a name of a region or a code of the region on the display unit  26  of the operation panel  20 . Or, the user can set a region to be used by handling the button  23  on the operation panel  20 . If a code of the region is used, a region and a code for the region which is shown in a manual of the laundry machine  100  can be used. 
     If setting of the region is finished by the user, the control unit  60  can apply the saving electricity time period according to the saving electricity time period for each region stored in the data base  66 . 
     Then, the control unit  60  displays an actual time input on the display unit  26  of the operation panel. According to this, the user can input the actual time by handling the button  23  on the operation panel  20 . (S 230 ). 
     Then, if the user finishes setting of the actual time, the control unit displays the saving electricity time period at the display unit  26 , and waits for user s input. Then, the user can select the saving electricity time period displayed thus, or input the saving electricity time period by handling the button  23  on the operation panel  20  the same as the actual time setting (S 240 ). 
     In the meantime, the control unit  60  can make the saving electricity time period setting by using the saving electricity time period for each region stored in the data base. In this instance, in a case the saving electricity time period for each region stored in the data base is used, user s saving electricity time input setting can be omitted. 
     The scheduled operation in the saving electricity time period of the laundry machine of the present invention will be described in detail with reference to the attached drawings. 
     The laundry machine of the present invention relates to real time scheduled operation with a real time timer and saving electricity scheduled operation. Detailed description of the operation of the laundry machine related to general washing, rinsing, spinning and drying of the laundry machine will be omitted for clarity of the present invention. 
       FIG. 7  illustrates a flow chart showing the steps of a method for making saving electricity scheduled operation of a laundry machine in accordance with a preferred embodiment of the present invention. 
     The control unit  60  determines whether the scheduled operation is set by user s handling of the operation panel  20  or not (S 310 ). If the scheduled operation is not set, the control unit  60  puts the laundry machine  100  into operation directly according to setting of washing the user selected (S 350 ). 
     In the meantime, if the scheduled operation is set by the user, the control unit  60  determines if the scheduled operation is the saving electricity scheduled operation or not (S 320 ). If the scheduled operation is general scheduled operation (that is, scheduled operation not related to the saving electricity time period), the control unit  60  waits until an operation time set by the user comes (S 330 ). Then, as a time of the scheduled operation comes, the control unit  60  puts the laundry machine  100  into operation according to the setting of washing the user selected (S 350 ). 
     In this instance, if the scheduled operation set by the user is the saving electricity scheduled operation, the control unit  60  determines if the preset saving electricity time period is come (S 340 ). 
     In this instance, if the saving electricity time period does not come yet, a waiting state is maintained, and if the saving electricity time period comes, the laundry machine  100  is put into operation according to the setting of washing the user selects (S 350 ). 
     In the meantime, the saving electricity scheduled operation can cause a problem of noise since most of the saving electricity is supplied in a midnight time period. According to this, the saving electricity scheduled operation is possible to use the midnight mode scheduled operation. 
       FIG. 8  illustrates a flow chart showing the steps of a method for making midnight mode scheduled operation of a laundry machine in accordance with a preferred embodiment of the present invention. 
     The control unit  60  determines whether the scheduled operation is set by user s handling of the operation panel  20  or not (S 410 ). If the scheduled operation is not set, the control unit  60  puts the laundry machine  100  into operation directly according to setting of washing the user selected (S 440 ). 
     In the meantime, if the scheduled operation is set by the user, the control unit  60  determines if the scheduled operation is the saving electricity scheduled operation or not (S 420 ). If the scheduled operation is general scheduled operation (that is, scheduled operation not related to the saving electricity time period), the control unit  60  waits until an operation time set by the user comes (S 430 ). Then, as a time of the scheduled operation comes, the control unit  60  puts the laundry machine  100  into operation according to the setting of washing the user selected (S 440 ). 
     In this instance, if the scheduled operation set by the user is the saving electricity scheduled operation, the control unit  60  determines if the preset saving electricity time period is come (S 450 ). In this instance, if the saving electricity time period does not come yet, a waiting state is maintained. 
     Thereafter, if the saving electricity time period comes, the control unit determines if the user s setting of washing is the midnight mode. If not, the control unit  60  puts the laundry machine  100  into operation according to preset setting of washing mode to perform a washing course. (S 470 ). 
     In the meantime, if the setting of washing the user selects is the midnight mode, the control unit  60  performs washing prior to the spinning mode in which noise is heavy in a preset washing mode (S 490 ). In this instance, the control unit  60  displays that the spinning course is omitted in the scheduled operation at the midnight mode display unit  28   b  for the user to notice. 
     In the meantime, if the user sets that the spinning course is performed in the midnight scheduled operation, the control unit  60  may perform tumbling in which the drum  50  is rotated at fixed intervals repeatedly until the midnight time period ends (or a time the user sets) after the midnight spinning course performed so that no crumple is formed at the laundry of which spinning is progressed (S 480 ). 
     Though, the midnight mode scheduled operation is described with the saving electricity scheduled operation, the midnight mode scheduled operation can be performed individually with no relation to the saving electricity scheduled operation. In this case, the control unit determines the midnight mode when the scheduled operation is started, and performs operation of the midnight mode. 
     In the meantime, the barrel washing of the laundry machine can be performed in the midnight time period by using the saving electricity. In this case, comparatively cheap saving electricity can be used. 
       FIG. 9  illustrates a flow chart showing the steps of a method for making barrel washing scheduled operation of a laundry machine in accordance with a preferred embodiment of the present invention. 
     The control unit  60  detects a setting state of the barrel washing as the barrel washing is set by user s handling of the operation panel  20  (S 510 ). 
     Then, the control unit  60  determines whether the barrel washing the user sets is the scheduled operation or not (S 520 ). If no barrel washing scheduled operation is set individually, the control unit  60  puts the laundry machine  100  into operation directly according to the setting of the barrel washing the user selects, to progress the barrel washing by supplying washing water and detergent (S 530 ). In this instance, if the barrel washing scheduled operation the user sets is general scheduled operation (that is, scheduled operation not related to the saving electricity time period), the control unit  60  waits until an operation time set by the user comes (S 550 ). Then, as a time of the scheduled operation comes, the control unit  60  puts the laundry machine  100  into operation according to the setting of barrel washing the user selected, to perform the barrel washing by supplying washing water and detergent (S 560 ). 
     In this instance, if the barrel washing scheduled operation the user sets is the saving electricity scheduled operation, at first, the control unit  60  supplies washing water and detergent for the barrel washing (S 570 ). 
     Then, the control unit  60  determines whether a preset saving electricity time period comes or not. If the saving electricity time period does not come yet, a waiting state is maintained (S 580 ). 
     In the meantime, if the saving electricity time period comes, the control unit  60  performs the barrel washing by using the washing water, and the detergent supplied in advance, and rotation power of the drum  50  according to barrel washing setting the user selects (S 590 ). 
     It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.