Washing machine using BLDC motor

Abstract

A washing machine using a BLDG motor is disclosed. The washing machine having a brushless DC motor for rotating a tub includes a case, a dynamic braking resistor, mounted with respect the case, producing heat energy when the brushless DC motor is braked, and a mount, coupled to the case and the dynamic braking resistor, for impeding a transfer of the heat energy of the dynamic braking resistor to the case.

1 . A washing machine having a brushless DC motor for rotating a tub, comprising: 
 a case;    a dynamic braking resistor, mounted with respect the case, producing heat energy when the brushless DC motor is braked; and    a mount, coupled to the case and the dynamic braking resistor, for impeding a transfer of the heat energy of the dynamic braking resistor to the case.    
   
   
       2 . The washing machine of  claim 1 , wherein the mount comprises: 
 a first mounting member for fixing the dynamic braking resistor; and    a second mounting member for separating the fixed dynamic braking resistor from the case.    
   
   
       3 . The washing machine of  claim 2 , wherein the first and second mounting members are integrally formed as one body.  
   
   
       4 . The washing machine of  claim 2 , wherein the first mounting member comprises: 
 a flange fixed to the dynamic braking resistor; and    a frame, connected to the second mounting member, for supporting the flange.    
   
   
       5 . The washing machine of  claim 4 , wherein the frame has at least one aperture for facilitating air circulation with respect to the dynamic braking resistor.  
   
   
       6 . The washing machine of  claim 4 , wherein the frame comprises a bent perimeter for imparting the frame with rigidity.  
   
   
       7 . The washing machine of  claim 4 , wherein the second mounting member establishes a predetermined distance between the frame and the case, based on the height of the dynamic braking resistor.  
   
   
       8 . The washing machine of  claim 7 , wherein the second mounting member has a length greater than the height of the dynamic braking resistor.  
   
   
       9 . The washing machine of  claim 7 , wherein the flange extends from the frame to separate the fixed dynamic braking resistor from the frame.  
   
   
       10 . The washing machine of  claim 9 , wherein the second mounting member has a length greater than the height of the dynamic braking resistor plus the separation between the fixed dynamic braking resistor and the frame.  
   
   
       11 . The washing machine of  claim 4 , wherein the second mounting member is secured to an upper surface of the case.  
   
   
       12 . The washing machine of  claim 11 , wherein the dynamic braking resistor is disposed between the first mounting member and the upper surface of the case.  
   
   
       13 . The washing machine of  claim 2 , wherein the dynamic braking resistor is fixed to the first mounting member using at least one screw.  
   
   
       14 . The washing machine of  claim 2 , wherein the dynamic braking resistor is fixed to the first mounting member using two screws.  
   
   
       15 . The washing machine of  claim 2 , wherein the second mounting member is secured to the case using at least one screw.  
   
   
       16 . The washing machine of  claim 2 , wherein the second mounting member is secured to the case using four screws.  
   
   
       17 . The washing machine of  claim 1 , wherein the mount further comprises: 
 a plurality of substantially flat surfaces formed of a rigid material; and    a channel, formed in the flat surfaces, for increasing the rigidity of the flat surfaces.    
   
   
       18 . The washing machine of  claim 2 , wherein the first mounting member comprises parallel sides joined by a central strut, the parallel sides being supported on the second mounting member.  
   
   
       19 . The washing machine of  claim 18 , wherein the first mounting member further comprises a plurality of channels, respectively formed in the parallel sides and the central strut.  
   
   
       20 . The washing machine of  claim 2 , wherein the second mounting member comprises four legs, each leg supporting the first mounting member at a separate point.  
   
   
       21 . The washing machine of  claim 20 , wherein the second mounting member further comprises a plurality of channels, respectively formed in each leg.  
   
   
       22 . The washing machine of  claim 1 , wherein the dynamic braking resistor is disposed above the case.  
   
   
       23 . The washing machine of  claim 22 , wherein the mount is secured to an upper surface of the case.  
   
   
       24 . The washing machine of  claim 1 , wherein the mount is formed of a material having a low heat transfer coefficient.  
   
   
       25 . A washing machine having a brushless DC motor for rotating a tub, comprising: 
 a case;    a dynamic braking resistor, mounted with respect the case, producing heat energy when the brushless DC motor is braked;    a flange fixed to the dynamic braking resistor;    a frame, connected to the second mounting member and separated from the flange, for supporting the flange; and    at least one leg, having one end connected to the frame and the other end secured to the case, the at least one leg having a length greater than a height of the dynamic braking resistor plus the separation of the flange from the frame.    
   
   
       26 . The washing machine of  claim 25 , wherein the frame has at least one aperture for facilitating air circulation with respect to the dynamic braking resistor.  
   
   
       27 . The washing machine of  claim 25 , wherein the flange, the frame, and the at least one leg are formed as substantially flat surfaces of a rigid material, at least one surface comprising a channel for increasing the rigidity of the flat surfaces.  
   
   
       28 . The washing machine of  claim 25 , wherein at least one of the flange, the frame, and the at least one leg is formed of a material having a low heat transfer coefficient.