Temperature-sensing piezoelectric dispenser

A temperature-sensing piezoelectric dispenser comprising:

• a pump body comprising a cooling line, through which a cooling fluid flows;
• a lever that is rotatably installed with respect to a hinge axis installed in the pump body;
• a first and second piezoelectric actuator installed in the pump body and each having a tip portion that is contactable to the lever as a length of the first or second piezoelectric actuator is increased when a voltage is applied to the first or second piezoelectric actuator to press and rotate the lever with respect to the hinge axis;
• a valve rod that is liftably connected to the lever according to rotation of the lever;
• a valve body comprising a storing unit, into which a tip portion of the valve rod is inserted and in which a liquid is stored, an inlet, through which the liquid flows into the storing unit, and a nozzle, through which the liquid of the storing unit is discharged according to advance and retreat of the valve rod with respect to the storing unit;
• a temperature sensor installed in one of the first or second piezoelectric actuator and the pump body to measure a temperature;
• a cooling pump for supplying the cooling fluid to the cooling line of the pump body;
• and
• a control unit for operating the first and second piezoelectric actuator and receiving the temperature sensed by using the temperature sensor to operate the cooling pump,
• wherein the first piezoelectric actuator and the second piezoelectric actuator rotate the lever with respect to the hinge axis in opposite directions from each other when a voltage is applied to the first piezoelectric actuator or the second piezoelectric actuator by the control unit.