| 摘要 |
PURPOSE:To obtain an air flow direction control device capable of imparting a sufficient deflection to an air current while suppressing losses at both the time of space heating and that of space cooling by using a plurality of air flow changing plates connected to each other with gaps formed therebetween, and automatically changing the shape of the air flow direction changing plates. CONSTITUTION:At the time of space cooling, an air flow changing plate 5 assumes a downward convex shape and angle of attack with respect to an air current from a vane wheel 1 becomes small, and exfoliation of the flow at the front edge of the air direction changing plate 5 is removed. Further, by the provision of a gap at a joint 7 of the air flow direction changing plate 5, a current flow is produced from the concave surface side to the convex surface side of the air flow changing plate 5. Hence, the exfoliation of the flow at the flow at the convex side of the downstream air flow changing plate 5b is suppressed. At the time of space heating the tension of a shape memory metal 9 overcomes the force of a bias spring 10 and the air flow direction changing plate 5 rotates in counterclockwise direction around a shaft 6 and a rod 11 presses a projection 8a. Hence the air flow changing plate 5b assumes an upward convex shape. Further, since the connecting portion 7 has a gap, the air flow at the convex surface side of the air flow direction changing plate 5 are not exfoliated but flows. |
