| 摘要 |
<p>PURPOSE: An air circulation device is provided to facilitate the installation thereof on a wall since the structure of an outer case is formed into a cylindrical shape. CONSTITUTION: An air circulation device comprises an inner case(10), an outer case(20), a motor(30), a ventilation fan(40), a first opening/closing plate, a second opening/closing plate(24), and a controller(50). An inflow path(12) is formed in an inner case for the inflow of outdoor air. The outer case maintains a fixed interval from the inner case and comprises an exhaust path(22). The motor is installed at the center of the inner case. The ventilation fan is installed in the rotary shaft of the motor. When the ventilation fan rotates in one direction, the first opening/closing plate is opened. When the ventilation fan rotates in the other direction, the second opening/closing plate is opened. The controller controls the motor.</p> |
