| 摘要 |
PURPOSE:To hold concentration of a perfume in a room at a specified value regardless of a fluctuation in a feed airflow of air conditioning air by a method wherein a feed amount of a perfume is controlled by means of the detecting value of at least one of a pressure in a feed duct and an air temperature in a room. CONSTITUTION:An airflow of air delivered with the aid of an air pump 40 is regulated by a mass flow controller 42 and guided to vegetable refined oil in a container 44 for bubbling. By the bubbling, phytoncide is dispersed and guided to an air conditioner through a feed pipe 45, and is fed in a room 10 togetherwith air conditioning air. A current responding to the detecting value of a pressure sensor 29 located in a feed duct 14 is outputted to a feed fan 18, and rotation thereof is controlled approximately proportionally in response to a current. Since when an airflow of feed air is increased, an air pressure in the room 10 is increased, by increasing an air bubbling amount, an amount of phytoncide fed in the room 10 is increased. When an airflow of feed air is low, an air bubbling amount is suppressed, and an amount of phytoncide fed to the room 10 is decreased. |
