Foam dispenser having twice automatic cleaning function

A foam dispenser having a twice automatic cleaning function configured to dispense pressurized separate fluids, the foam dispenser comprising:

• a main body including hose connector and an air hose connector which are formed at one end thereof and are connected to a supply source of the pressurized separate fluids and an air supply source through hoses, respectively, a coupling end part formed at the other end thereof, a pair of fluid passageways formed therein in a longitudinal direction through which the pressurized separate fluids flow, an air passageway formed therein through which compressed air flows, and a handle formed at a lower portion thereof;
• a dispensing nozzle which is connected to the coupling end part of the main body, has a mixing chamber in which the fluid passageways and the air passageway are joined, and is configured to dispense the pressurized separate fluids mixed in the mixing chamber;
• a separate-fluid supply assembly provided inside the main body and including at least one communication valve configured to open or close the fluid passageways by an operation of a trigger lever;
• and an automatic cleaner provided at a middle portion of the air passageway, and configured to automatically open the air passageway for a predetermined period of time, when the trigger lever is pulled or released, so that the pressurized separate fluids remaining in the mixing chamber are discharged to an outside of the dispensing nozzle,
• wherein the automatic cleaner comprises:
• a switching chamber formed in the middle portion of the air passageway in a direction perpendicular thereto;
• a valve switch installed inside the switching chamber to reciprocate in the longitudinal direction thereof:
• and
• a connecting rod whose one end is connected to the trigger lever by a pin and the other end is connected to the valve switch to transmit a pressing force of the trigger lever to the valve switch to reciprocate the same, wherein, when the trigger lever is pulled or released, the valve switch opens the air passageway for a predetermined period of time.