| 摘要 |
PURPOSE:To improve the energy efficiency and economical effectiveness of the installation by a method wherein an air blowing-off port and suction port are provided for keeping the minimum air flowing speed of an air curtain in the limit of no natural convection generating. CONSTITUTION:A horizontal laying square cylinder-shaped surrounding wall is composed of a ceiling wall 4, a side wall 5 and a floor, the ceiling wall 4 and the side wall 5 are provided along the opening edge of a square-shaped opening 3 bored on a side wall 2 of a chamber 1. A blowing-off port 8 and an intake port 9 of an air curtain A are bored at respective outer side and inner side of the chamber on the ceiling wall 4. An air flowing B toward the inside of the chamber is generated when the air curtain A strikes the surface of a floor 7, on the other hand, the flowing direction of the air flowing B is changed by the suction force from the intake port 9 caused by providing the intake port 9 on the ceiling at the inner side of the chamber than the blowing- off port 8, thus, a rising air flowing C is generated. A sucked air flowing Q1 from the inside of the chamber is caused by only the rising air flowing C. |
