Method for controlling washing machine having drying function

Abstract

A method for controlling a washing machine having a drying function is disclosed. The method for controlling the washing machine having a drying function includes: a) dehydrating laundry if a command for performing a drying operation is inputted by a user; and b) drying the laundry after the dehydrating step. The dehydrating step a) includes: measuring time until a rotational velocity of a drum reaches a predetermined velocity; calculating an amount of the laundry based on the measured time; determining a dehydration velocity and dehydration time according to the calculated amount of the laundry; and rotating the drum at the dehydration velocity for the dehydration time. The drying step b) includes: hot-air drying the laundry by operating a heater and a blower fan to supply hot air into the drum until dryness of the laundry reaches a predetermined target dryness; and if the dryness of the laundry reaches the predetermined target dryness, cool-air drying the laundry by stopping operation of the heater while keeping operation of the blower fan to supply air of low temperature into the drum for a predetermined time.

1 . A method for controlling a washing machine having a drying function which includes a drum and a drying device for drying laundry by supplying hot dry air into the drum, the method comprising: 
 a) dehydrating the laundry if a command for performing a drying operation is inputted by a user; and    b) drying the laundry after the dehydrating step a).    
   
   
       2 . The method according to  claim 1 , wherein the command is a command for independently performing only the drying operation.  
   
   
       3 . The method according to  claim 1 , wherein the dehydrating step a) includes: rotating the drum at a predetermined velocity (V 1 ) for a predetermined time (T 1 ).  
   
   
       4 . The method according to  claim 1 , wherein the dehydrating step a) includes: 
 measuring time until a rotational velocity of the drum reaches a predetermined velocity (V 2 );    calculating an amount of the laundry based on the measured time;    determining a dehydration velocity (V 3 ) and dehydration time (T 2 ) according to the calculated amount of the laundry; and    rotating the drum at the dehydration velocity (V 3 ) for the dehydration time (T 2 ).    
   
   
       5 . The method according to  claim 1 , wherein the dehydrating step a) includes: rotating the drum while the drying device is in a non-operating state.  
   
   
       6 . The method according to  claim 1 , wherein the dehydrating step a) includes: rotating the drum and driving the drying device at the same time.  
   
   
       7 . The method according to  claim 1 , wherein the drying device includes a blower fan which forcedly sucks external air and blows the air into the drum, and a heater which heats the air sucked by the blower fan to supply hot air into the drum, 
 whereby the drying step b) includes:    hot-air drying the laundry by operating the heater and the blower fan to supply the hot air into the drum until dryness of the laundry reaches a predetermined target dryness; and    if the dryness of the laundry reaches the predetermined target dryness, cool-air drying the laundry by stopping operation of the heater while keeping operation of the blower fan to supply air of low temperature into the drum for a predetermined time (T 3 ).    
   
   
       8 . A method for controlling a washing machine having a drying function which includes a drum and a drying device for drying laundry by supplying hot dry air into the drum, the method comprising: 
 a) dehydrating the laundry if a command for performing a drying operation is inputted by a user;    b) disentangling the laundry tangled during the dehydrating step a); and    c) drying the laundry after the disentangling step b).    
   
   
       9 . The method according to  claim 8 , wherein the command is a command for independently performing only the drying operation.  
   
   
       10 . The method according to  claim 8 , wherein the dehydrating step a) includes: rotating the drum at a predetermined velocity (V 1 ) for a predetermined time (T 1 ).  
   
   
       11 . The method according to  claim 8 , wherein the dehydrating step a) includes: 
 measuring time until a rotational velocity of the drum reaches a predetermined velocity (V 2 );    calculating an amount of the laundry based on the measured time;    determining a dehydration velocity (V 3 ) and dehydration time (T 2 ) according to the calculated amount of the laundry; and    rotating the drum at the dehydration velocity (V 3 ) for the dehydration time (T 2 ).    
   
   
       12 . The method according to  claim 8 , wherein the dehydrating step a) includes: rotating the drum while the drying device is in a non-operating state.  
   
   
       13 . The method according to  claim 8 , wherein the dehydrating step a) includes: rotating the drum and driving the drying device at the same time.  
   
   
       14 . The method according to  claim 8 , wherein the disentangling step b) includes: dispersing the laundry by alternately rotating the drum in a given rotation direction and in a reverse direction.  
   
   
       15 . The method according to  claim 8 , wherein the drying device includes a blower fan which forcedly sucks external air and blows the air into the drum, and a heater which heats the air sucked by the blower fan to supply hot air into the drum, 
 whereby the drying step c) includes:    hot-air drying the laundry by operating the heater and the blower fan to supply the hot air into the drum until dryness of the laundry reaches a predetermined target dryness; and    if the dryness of the laundry reaches the predetermined target dryness, cool-air drying the laundry by stopping operation of the heater while keeping operation of the blower fan to supply air of low temperature into the drum for a predetermined time (T 3 ).