US2011280736A1PendingUtilityA1

Control method of dryer

43
Assignee: LEE YONGJUPriority: Apr 28, 2010Filed: Apr 28, 2011Published: Nov 17, 2011
Est. expiryApr 28, 2030(~3.8 yrs left)· nominal 20-yr term from priority
Inventors:Yongju LeeSangik LeeHyunwoo Noh
D06F 2103/50F04B 2203/0209F04B 49/03D06F 2105/26D06F 2101/20D06F 58/206D06F 58/52D06F 58/50Y02B40/00
43
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Claims

Abstract

A control method of a dryer is disclosed. A control method of a dryer including a heat pump having a variable velocity type compressor, the control method includes steps of selecting at least one course supplying air or dried air; increasing an activation velocity of the compressor to a target velocity, as the selected course is implemented; and adjusting an open degree of an expansion valve provided in the heat pump.

Claims

exact text as granted — not AI-modified
1 . A control method of a dryer comprising a heat pump including a variable velocity type compressor, the control method comprising steps of:
 selecting at least one course set to supply air or dried air;   increasing an activation velocity of the compressor to a target velocity, as the selected course is implemented; and   adjusting an open degree of an expansion valve provided in the heat pump.   
     
     
         2 . The control method of the dryer as claimed in  claim 1 , wherein the step of increasing the activation velocity of the compressor to the target velocity is performed for a first time band. 
     
     
         3 . The control method of the dryer as claimed in  claim 2 , wherein an open degree of the expansion valve is maintained at a maximum value for the first time band. 
     
     
         4 . The control method of the dryer as claimed in  claim 2 , further comprising steps of:
 opening the expansion valve at a maximum degree for the first time band; and   closing the expansion valve by adjusting the open degree of the expansion valve for the first time band.   
     
     
         5 . The control method of the dryer as claimed in  claim 4 , wherein the expansion valve is closed by adjusting the open degree of the expansion valve a predetermined time after the first time band starts. 
     
     
         6 . The control method of the dryer as claimed in  claim 2 , wherein the activation velocity of the compressor is gradually increased for the first time band. 
     
     
         7 . The control method of the dryer as claimed in  claim 2 , wherein the activation velocity of the compressor is serially increased for the first time band. 
     
     
         8 . The control method of the dryer as claimed in  claim 7 , wherein the activation velocity of the compressor is serially increased along a predetermined curvature. 
     
     
         9 . The control method of the dryer as claimed in  claim 8 , wherein a slope of the curvature in a first half of the first time band is larger than a slope of the curvature in a second half of the first time band. 
     
     
         10 . The control method of the dryer as claimed in  claim 1 , wherein the step of adjusting the open degree of the expansion valve is performed for a second time band. 
     
     
         11 . The control method of the dryer as claimed in  claim 10 , wherein the expansion valve is closed gradually. 
     
     
         12 . The control method of the dryer as claimed in  claim 11 , wherein the expansion valve is closed based on at least one piece of temperature information relating to the heat pump. 
     
     
         13 . The control method of the dryer as claimed in  claim 12 , wherein the temperature information relating to the heat pump comprises at least one of a temperature of a refrigerant circulating the heat pump and a temperature of an evaporator, a temperature of a compressor and a temperature of a condenser which are provided in the heat pump. 
     
     
         14 . The control method of the dryer as claimed in  claim 12 , wherein the expansion valve is closed gradually when the at least one piece of the temperature information relating to the heat pump is increased to a preset value or more. 
     
     
         15 . The control method of the dryer as claimed in  claim 10 , wherein an activation velocity of the compressor is maintained to be the target velocity for the second time band. 
     
     
         16 . The control method of the dryer as claimed in  claim 10 , wherein an activation velocity of the compressor is adjusted for the second time band. 
     
     
         17 . The control method of the dryer as claimed in  claim 1 , further comprising steps of:
 identifying a low noisy activation condition of the dryer while a selected course is implemented; and   adjusting an activation velocity of the compressor based on the low noisy activation condition.   
     
     
         18 . The control method of the dryer as claimed in  claim 17 , wherein the low noisy activation condition of the dryer is set manually or automatically. 
     
     
         19 . The control method of the dryer as claimed in  claim 17 , wherein the low noisy activation condition of the dryer is set based on a user's selection or an activation time band of the dryer. 
     
     
         20 . The control method of the dryer as claimed in  claim 19 , wherein the low noisy activation condition of the dryer is set when the user selects a predetermined course or a predetermined mode. 
     
     
         21 . The control method of the dryer as claimed in  claim 19 , wherein the low noisy activation condition of the dryer is set when an activation time band of the dryer belongs to a predetermined time band. 
     
     
         22 . The control method of the dryer as claimed in  claim 21 , wherein the low noisy activation condition of the dryer is set when an activation time band of a variable velocity type compressor provided in the dryer belongs to a predetermined time band. 
     
     
         23 . The control method of the dryer as claimed in  claim 17 , wherein the step of adjusting the activation velocity of the variable velocity type compressor activates the variable velocity type compressor at a predetermined velocity which is lower than a normal velocity of the compressor. 
     
     
         24 . The control method of the dryer as claimed in  claim 17 , wherein the step of adjusting the activation velocity of the variable velocity type compressor activates the variable velocity type compressor at a predetermined velocity which allows noise generated in the compressor to be a preset reference value or lower. 
     
     
         25 . A dryer comprising:
 a user operational part configured to receive at least one piece of drying information;   a control unit configured to generate an operation signal based on the drying information input via the user operational part;   a heat pump activated based on the operation signal generated in the control unit, the heat pump comprising a compressor and an expansion valve,   wherein an activation velocity of the compressor is increased to a preset target velocity based on the operation signal for a first time band and an open degree of the expansion valve is adjusted based on the operation signal for a second time band which is in a serial order with the first time band   
     
     
         26 . The dryer as claimed in  claim 25 , wherein the second time band is partially overlapped with the first time band.

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