| 摘要 |
PROBLEM TO BE SOLVED: To diffuse air only toward the under surface of a cylindrical material made of fibers by a method wherein only the upper surface of a pressure air drum body is covered with a film of synthetic resin and only the under surface of the cylindrical material made of fibers having a number of vent holes is released. SOLUTION: One end of a cylindrical material 6 made of fibers having a number of vent holes is closed throughout a whole surface. A pressure drum body 3 wherein high pressure blast from a fan 'arranged at the other end opening part is practicable is provided. A pressure type air drum body 3 is horizontally arranged and is used in a state to be suspended from a ceiling by a wire. Only the upper surface of the pressure type air drum body 3 is covered with a film 5, and only the under surface of the cylindrical material 6 made of fibers is released and air is diffused toward only the under surface of the cylindrical material 6 made of fibers and heat energy is high-efficiently utilized. |
