Ventilation apparatus

A ventilation apparatus comprising:

• a stator having a base and one or more extensions formed on the base;
• a ventilator having a first end coupled to the stator and a second end as a free end;
• a vibrator formed between the first and second ends of the ventilator and disposed to move with respect to the one or more extensions of the stator;
• a permanent magnet disposed on the stator to generate a magnet flux along the stator and the vibrator;
• and
• a coil wound around one of the one or more extensions of the stator and the vibrator,
• wherein the second end of the ventilator moves when the vibrator moves with respect to the one or more extensions according to a direction of an electric current applied to the coil to change the magnet flux of the permanent magnet.

An electric system having a ventilation apparatus to ventilate air therein, comprising:

• a heat-generating component;
• an air duct;
• a case to contain the heat-generating component 201 and the air duct 202;
• and
• a ventilation apparatus disposed in the case to generate an airflow to control a temperature of an inside of the electronic system, the ventilation apparatus comprising:
• a stator,
• a vibrator arranged adjacent to the stator,
• a permanent magnet to generate a magnet flux to form a path of the magnet flux along the stator and the vibrator,
• a coil wound around one or the stator and the vibrator, and
• a ventilator coupled to the vibrator and operated by a linear reciprocating motion of the vibrator generated when an electric current is applied to the coil to change the magnet flux of the permanent magnet.