Control method of laundry machine

Abstract

The control method of a laundry machine is disclosed. The control method of a laundry machine includes a step configured to rotate a drum in an RPM band belonging to a transient region and higher at a predetermined acceleration inclination less than a preset minimum drum speed acceleration inclination of the spinning cycle for a predetermined time period.

1 . A control method of a laundry machine comprising a spinning cycle, the control method comprising:
 a step configured to rotate a drum in an RPM band belonging to a transient region and higher at a predetermined acceleration inclination less than a preset minimum drum speed acceleration inclination of the spinning cycle for a predetermined time period.   
     
     
         2 . The control method as claimed in  claim 1 , wherein the rotation speed of the drum is accelerated according to the minim acceleration inclination of the drum in an accelerating step of the spinning step after it passes the transient region. 
     
     
         3 . The control method as claimed in  claim 1 , further comprising:
 a step configured to rotate the drum at a predetermined acceleration inclination less than the minimum drum speed acceleration inclination of the spinning cycle, when the drum speed belongs to the transient region, for a predetermined time period.   
     
     
         4 . The control method as claimed in  claim 3 , further comprising:
 a step configured to rotate the drum at a constant RPM for a predetermined time period when the drum speed belongs to the transient region.   
     
     
         5 . The control method as claimed in  claim 1 , wherein the transient region is expanded more than a RPM calculated by adding a value of approximately 30% of the start RPM to the start RPM. 
     
     
         6 . The control method as claimed in  claim 1 , wherein the transient region comprises an RPM band of 200 to 350 RPM. 
     
     
         7 . The control method as claimed in  claim 3 , wherein the laundry machine comprises a driving unit comprising a shaft connected to a drum, a bearing housing to rotatably support the shaft, and a motor to rotate the shaft, and a suspension assembly is connected to the driving unit. 
     
     
         8 . The control method as claimed in  claim 3 , wherein the laundry machine comprises a rear gasket for sealing to prevent washing water from leaking from a space between a driving unit and a tub, and enabling the driving unit movable relative to the tub. 
     
     
         9 . The control method as claimed in  claim 3 , wherein a tub is supported rigidly more than a drum being supported by a suspension assembly. 
     
     
         10 . The control method as claimed in  claim 1 , further comprising:
 a step configured to rotate the drum at a predetermined acceleration inclination less than the minimum acceleration inclination of a drum speed for the spinning cycle for a predetermined time period, at least one of before and while and after the drum speed passes an irregular vibration region.   
     
     
         11 . The control method as claimed in  claim 10 , further comprising:
 a step configured to rotate the drum at a constant RPM for a predetermined time period at least one of before, while and after the drum speed passes the irregular vibration region.   
     
     
         12 . The control method as claimed in  claim 10 , wherein the laundry machine comprises a driving unit comprising a shaft connected to a drum, a bearing housing to rotatably support the shaft, and a motor to rotate the shaft, and a suspension assembly is connected to the driving unit. 
     
     
         13 . The control method as claimed in  claim 10 , wherein the laundry machine comprises a rear gasket for sealing to prevent washing water from leaking from a space between a driving unit and a tub, and enabling the driving unit movable relative to the tub. 
     
     
         14 . The control method as claimed in  claim 10 , wherein a tub is supported rigidly more than a drum being supported by a suspension assembly.