| 摘要 |
PURPOSE:To obtain optimum air quantity and air velocity according to the temperature of a warm air flow, by a method wherein an airflow direction controlling plate and a blow-off port cross-sectional area controlling plate in an interior-side unit are driven by a shape memory alloy the stored shape of which is changed in accordance with the temperature of the blown-off airflow. CONSTITUTION:The interior-side unit comprised of a fan motor 11, a rotating speed controller 12 for the motor 11, a blow-off port cross-sectional area regulator 13, a controller 14 for the regulator 13, a blown-off air velocity controller 15 and the like is provided with an airflow direction controlling assembly 21 rotated with a shaft 22 as a center, the blow-off port cross-sectional area controlling plate 23 rotated with a shaft 23' as a center and a spring 26 formed of a shape memory alloy. In controlling the blown-off air velocity, when the plate 21 is directed downward while the temperature of the airflow is low after starting the operation, the tip of the plate 23 is compressed by actions of a fixed gear 25 and a gear plate 24. Although the spring 26 is forcibly bent at this time, it retains its shape because the temperature is not higher than its operating temperature. When the fan motor 11 is operated at a low speed, air quantity is reduced and the blown-off air temperature is raised. However, since the blow-off port cross-sectional area is throttled, the air velocity becomes relatively high, and warm air of a high temperature can be brought to the floor surface. |
