Washing machine

Abstract

Disclosed is a washing machine, in which a drive circuit of the washing machine is prevented from being damaged by a counter electromotive force generated from a wash motor making a precipitate stop. The present invention includes a cabinet, a drum, a motor, and a brake resistance assembly including a case forming an exterior, first and second connect terminals fixed to the case to be connected to an external circuit, first and second bobbins provided in the case, and first and second coils differing in resistance to be wound on the first and second bobbins, respectively.

What is claimed is:  
     
         1 . A washing machine comprising: 
 a cabinet;    a drum;    a motor; and    a brake resistance assembly comprising: 
 a case forming an exterior;  
 first and second connect terminals fixed to the case to be connected to an external circuit;  
 first and second bobbins provided in the case; and  
 first and second coils differing in resistance to be wound on the first and second bobbins, respectively.  
   
     
     
         2 . The washing machine as claimed in  claim 1 , wherein one ends of the first and second coils are connected to the first and second connect terminals, respectively and the other ends of the first and second coils are connected to a common terminal.  
     
     
         3 . The washing machine as claimed in  claim 1 , wherein the first coil is thinner than the second coil.  
     
     
         4 . The washing machine as claimed in  claim 1 , wherein the resistance of the first coil is greater than the second coil.  
     
     
         5 . The washing machine as claimed in  claim 1 , wherein the first and second coils are formed of Al and Cu, respectively.  
     
     
         6 . The washing machine as claimed in  claim 1 , wherein the first coil is melted to be cut off when a voltage over a predetermined level is applied to both ends of the first coil.  
     
     
         7 . The washing machine as claimed in  claim 1 , wherein a rugged part is formed on an outside of the case to increase a heat-exchange area thereof.  
     
     
         8 . The washing machine as claimed in  claim 1 , the case comprising: 
 a first partition having the first and second connect terminals fixed thereto; and    a second partition leaving a predetermined distance from the first partition.    
     
     
         9 . The washing machine as claimed in  claim 8 , wherein a space between the first and second partitions in the case is filled up with an insulator having good heat conductivity.  
     
     
         10 . The washing machine as claimed in  claim 8 , wherein a molding material is provided to outsides of the first and second partitions in the case.  
     
     
         11 . A brake resistance assembly comprising: 
 a case forming an exterior;    first and second connect terminals fixed to the case to be connected to an external circuit;    first and second bobbins provided in the case; and    first and second coils differing in resistance to be wound on the first and second bobbins, respectively.    
     
     
         12 . The brake resistance assembly as claimed in  claim 11 , wherein one ends of the first and second coils are connected to the first and second connect terminals, respectively and the other ends of the first and second coils are connected to a common terminal.  
     
     
         13 . The brake resistance assembly as claimed in  claim 11 , wherein the first coil is thinner than the second coil.  
     
     
         14 . The brake resistance assembly as claimed in  claim 11 , wherein the resistance of the first coil is greater than the second coil.  
     
     
         15 . The brake resistance assembly as claimed in  claim 11 , wherein the first and second coils are formed of Al and Cu, respectively.  
     
     
         16 . The brake resistance assembly as claimed in  claim 11 , wherein the first coil is melted to be cut off when a voltage over a predetermined level is applied to both ends of the first coil.  
     
     
         17 . The brake resistance assembly as claimed in  claim 11 , wherein a rugged part is formed on an outside of the case to increase a heat-exchange area thereof.  
     
     
         18 . The brake resistance assembly as claimed in  claim 11 , the case comprising: 
 a first partition having the first and second connect terminals fixed thereto; and    a second partition leaving a predetermined distance from the first partition.    
     
     
         19 . The brake resistance assembly as claimed in  claim 18 , wherein a space between the first and second partitions in the case is filled up with an insulator having good heat conductivity.  
     
     
         20 . The brake resistance assembly as claimed in  claim 18 , wherein a molding material is provided to outsides of the first and second partitions in the case.