Control apparatus for water flow and dishwasher having the same

A dishwasher comprising:

• a tub for receiving washing targets;
• a sump in which water is stored;
• spray arms spraying water to the washing targets;
• a pump supplying the water stored in the sump to the spray arms;
• a water supply path connected to a water supply source;
• a connection path connected to the sump;
• an inlet connected to the water supply path;
• a discharge unit connected to the connection path;
• a chamber for communicating the inlet with the discharge unit through a first communication unit connected to the inlet and a second communication unit connected to the discharge unit;
• a valve for opening/closing the second communication unit;
• a first body fixed to one of an inside of the inlet or an inside of the discharge unit;
• a first through hole passing through the first body and configured to form a water flow;
• a second body located inside the first through hole;
• an elastic body coupled to the second body;
• a first support unit protruded from the first body to the elastic body, supporting the elastic body and forming a space between the elastic body and the first body;
• and
• a second support unit protruded from the first body to the elastic body, selectively supporting the elastic body based on water pressure.