| 摘要 |
PURPOSE:To provide a comfortable environment by a method wherein an odor adding air supplying time and a non-odor adding air supplying time are alternatively repeated, an odor concentration in the supplied air at the odor adding air supplying time is kept higher than its threshold value and an air supplying and blowing direction into a room is varied. CONSTITUTION:Under a normal controlling operation, a time in which only a control valve 17a for a certain odor and a fine flow rate pump 18a are operated while being cooperatively driven and an odor is supplied into an air supplying duct 3 and another time in which the odor supplying is terminated are alternatively operated. At this time of supplying odor, an amount of odor of which concentration in the supplied air exceeds its threshold value is supplied. Odor adding air exceeding its threshold value is supplied into an air conditioned room through an air blowing port while its direction being changed. Due to this operation, occupants in the room receive odor added air exceeding its threshold value in a non-continuous manner, thereby odor concentration is changed. With such an arrangement as above, it is possible to form comfortable environment where the occupants may feel comfortable feeling or freshness with odor. |
