| 摘要 |
<p>PROBLEM TO BE SOLVED: To uniformalize distribution of a cold airflow at an upper side and a lower side of a room by comprising a stage wherein a horizontal louver is rotated downward at a first speed, and a stage wherein the horizontal louver is rotated upward at a second speed which is different from the first speed. SOLUTION: With the movement of a horizontal louver from an upper side E to a lower side F, a control device controls an upper and a lower stop motors to permit the rotational speed of the horizontal louver to be around 16 deg./sec, a first speed, which is faster than the rotational speed of general horizontal louvers. On the contrary, when the horizontal louver moves from the lower side F to the upper side E, the control device controls the upper and lower stop motors to permit the horizontal louver to rotate at a speed of around 8 deg./sec, a second speed, which is lower than the first speed. In this manner, the distribution of a cold airflow at an upper side and a lower side of a room can be uniformalized.</p> |
