Washing machine

Abstract

A washing machine includes a wash tub ( 9 ) in which a predetermined amount of wash liquid is reserved, a heating unit ( 17 ) heating the wash liquid, a temperature sensor ( 45 ) detecting a temperature of the wash liquid, a drive unit ( 15 ) rotating the wash tub ( 9 ), and a control device ( 46 ) controlling the driving unit ( 15 ) so that rotation of the wash tub ( 9 ) is controlled. The control device ( 46 ) changes a rotating mode of the wash tub ( 9 ) according to one of a plurality of temperature ranges to which the temperature of the wash liquid detected by the temperature sensor ( 45 ) belongs.

1 . A washing machine comprising: 
 a wash tub in which a predetermined amount of wash liquid is reserved;    a heating unit heating the wash liquid;    a temperature sensor detecting a temperature of the wash liquid;    a driving unit rotating the wash tub; and    a control device controlling the driving unit so that rotation of the wash tub is controlled,    wherein the control device changes a rotating mode of the wash tub according to one of a plurality of temperature ranges to which the temperature of the wash liquid detected by the temperature sensor belongs.    
   
   
       2 . A washing machine comprising: 
 a wash tub in which a predetermined amount of wash liquid is reserved;    a heating unit heating the wash liquid;    a temperature sensor detecting a temperature of the wash liquid;    an agitator rotatably mounted in the wash tub;    a driving unit rotating the agitator;    a control device controlling the driving unit so that rotation of the agitator is controlled,    wherein the control device changes a rotating mode of the agitator according to one of a plurality of temperature ranges to which the temperature of the wash liquid detected by the temperature sensor belongs.    
   
   
       3 . A washing machine according to  claim 1 , wherein the temperature ranges include a first temperature range and a second temperature range higher than the first temperature range, and the control device renders a rotating time of the wash tub shorter and/or a rotational speed of the wash tub lower when the temperature of the wash liquid detected by the temperature sensor belongs to the second temperature range than when the temperature of the wash liquid detected by the temperature sensor belongs to the first temperature range.  
   
   
       4 . A washing machine according to  claim 2 , wherein the temperature ranges include a first temperature range and a second temperature range higher than the first temperature range, and the control device renders a rotating time of the agitator shorter and/or a rotational speed of the agitator lower when the temperature of the wash liquid detected by the temperature sensor belongs to the second temperature range than when the temperature of the wash liquid detected by the temperature sensor belongs to the first temperature range.  
   
   
       5 . A washing machine according to  claim 3 , wherein a boundary between the first and second temperature ranges is set to be at or above 35° C. and at or below 45° C.  
   
   
       6 . A washing machine according to  claim 4 , wherein a boundary between the first and second temperature ranges is set to be at or above 35° C. and at or below 45° C.  
   
   
       7 . A washing machine according to  claim 1 , wherein the temperature ranges include a first temperature range, a second temperature range higher than the first temperature range and a third temperature range higher than the second temperature range, and the control device renders a rotating time of the wash tub shorter and/or a rotational speed of the wash tub lower when the temperature of the wash liquid detected by the temperature sensor belongs to the second temperature range than when the temperature of the wash liquid detected by the temperature sensor belongs to each of the other temperature ranges.  
   
   
       8 . A washing machine according to  claim 2 , wherein the temperature ranges include a first temperature range, a second temperature range higher than the first temperature range and a third temperature range higher than the second temperature range, and the control device renders a rotating time of the agitator shorter and/or a rotational speed of the agitator lower when the temperature of the wash liquid detected by the temperature sensor belongs to the second temperature range than when the temperature of the wash liquid detected by the temperature sensor belongs to each of the other temperature ranges.  
   
   
       9 . A washing machine according to  claim 7 , wherein a boundary between the second and third temperature ranges is set to be at or above 55° C. and at or below 65° C.  
   
   
       10 . A washing machine according to  claim 8 , wherein a boundary between the second and third temperature ranges is set to be at or above 55° C. and at or below 65° C.  
   
   
       11 . A washing machine comprising: 
 a wash tub in which a predetermined amount of wash liquid is reserved;    a heating unit heating the wash liquid;    a draining unit draining the wash liquid from the wash tub;    a bubble detector detecting an amount of bubble produced in the wash tub; and    a control device controlling at least the wash tub and the heating unit so that a washing operation is carried out with the heating unit heating the wash liquid,    wherein when determining that an amount of bubble detected by the bubble detector exceeds a predetermined value, the control device interrupts the heating unit and operates the draining unit so that the wash liquid is drained and the washing operation is carried out.