Dishwasher having steam washing function and dishwashing method

Abstract

A dishwashing method of a dishwasher which includes a body, a dishwashing tub contained in the body, a steam generator received in the dishwashing tub to generate steam, a plurality of steam injection nozzles to inject the steam generated by the steam generator, a plurality of control valves to control flow of the steam into the respective steam injection nozzles, the method including injecting steam from a plurality of the steam injection nozzles comprising opening a plurality of the control valves, to maintain an injection pressure of the steam generated by the steam generator.

1 . A dishwashing method of a dishwasher comprising a body, a dishwashing tub contained in the body, a steam generator received in the dishwashing tub to generate steam, a plurality of steam injection nozzles to inject the steam generated by the steam generator, a plurality of control valves to control flow of the steam into the respective steam injection nozzles, comprising:
 injecting steam from a plurality of the steam injection nozzles comprising opening a plurality of the control valves, to maintain an injection pressure of the steam generated by the steam generator.   
     
     
         2 . The method according to  claim 1 , wherein the injecting of the steam comprises sequentially opening the plurality of control valves, thus causing the steam to be injected from the plurality of steam injection nozzles in sequence. 
     
     
         3 . The method according to  claim 2 , wherein the injecting of the steam comprises sequentially opening the control valves one by one, thus causing the steam to be injected from the respective steam injection nozzles in sequence. 
     
     
         4 . The method according to  claim 2 , wherein the dishwasher further comprises at least one water supply nozzle in the dishwashing tub to inject water into the dishwashing tub, and the method further comprises injecting the water simultaneously during the injecting of the steam. 
     
     
         5 . The method according to  claim 2 , wherein the dishwasher further comprises a water supply nozzle in the dishwashing tub to inject water into the dishwashing tub, and
 the method further comprises injecting the water simultaneously during the injecting of the steam.   
     
     
         6 . The method according to  claim 1 , further comprising:
 injecting water into the dishwashing tub without the steam before or after the injecting of the steam.