| 摘要 |
PURPOSE:To enable to feed the discharge air with comfortable temperature at constant discharge air velocity to the floor surface by a method wherein the rotational frequency controlling device of a fan motor and a discharge port area device are provided at an indoor side unit. CONSTITUTION:The rotational frequency of the fan motor 11 is controlled through the rotational frequency controlling device 12 operated with the output of a discharge air velocity controlling device 15, to which a temperature detecting element of heat exchanger 16 and a discharge air temperature detecting element 17 are connected, so as to bring the temperature of discharge air to comfortable temperature. Furthermore, the discharge port area is controlled by the discharge port area changing device 13 controlled with the discharge air velocity controlling device 15 so as to produce the discharge air velocity just as fast as to let hot air to reach to the floor surface. |
