| 摘要 |
PURPOSE:To permit to blow off big amount of air uniformly without providing blow- off ports separately by constituting the duct of a material having fine holes and flexibility. CONSTITUTION:A flat plate-like thick and porous material is used to constitute the duct and is formed into a tubular shape by fasteners 2. One end of the duct 1 is connected to the air sending port of an air-conditioning equipment directly or indirectly and the other end thereof is closed. The duct is made of the porous material such as cotton cloth, wire mesh, a film-like material or the like, therefore, respective fine holes on the whole surface of side wall of the duct 1 become blow-off ports and air of slow speed is blown off therefrom whereby the air conditioning of an objective room may be effected. When the duct 1 is utilized for the transfer of air-conditioning air, the duct is provided with a film or film of coating 4 of rubber, synthetic resin or the like on the inside of the duct 1. The ventilation from the side wall of the duct 1 may be controlled by making the film or the film of coating 4 with proper size and configuration. In such ventilating method effected by the air leaking duct, the side wall of the duct 1 becomes blow-off ports and big amount of air, having very slow blow-off speed, may be blown off into a room uniformly in accordance with the purpose of the air conditioning. |
