PUMP INTEGRALLY PERFORMING WATER SUPPLY AND WATER DRAINAGE

摘要

PURPOSE: A pump integrally performing water supply and water drainage is provided to miniaturize a pump of the same capacity, to improve the pumping efficiency by reducing the amount of residual water when draining water and the rinsing performance. CONSTITUTION: A dish washer performs washing stroke by flowing the washing water passing through a separate filter into a water supply space(121) of a pump(100) along a water supply path space(123) of a suction hole(125) for water supply and water drainage according to the right rotation of a rotor(130) for water supply and another rotor(140) for drainage by a driving motor(110), and jetted to dishes via washing arms via a water vent hole(126) after being sucked via the rotor for water supply. Herein, the rotor for water supply is formed at rear of the rotating direction of the rotor so that the washing water is vented via the vent hole by receiving strong pressure by the centrifugal force of a rotating impeller(131). Then, a drainage path space(124) of the suction hole is closed by the filter, or opened in atmosphere. Therefore, filth or sewage is not flowed in from the filter even if the rotor for drainage rotates together with the rotor for water supply.