| 摘要 |
PURPOSE:To prevent dropwise condensation of moisture effectively, by constituting an air ejecting section by a heat-insulating material, and covering the same with an air impermeable coating material. CONSTITUTION:A pressure equalizing box section and a primary-air ejecting port 27 are defined by a heat-insulating material 29, and the inner surface 29a and the outer surface 29b of the heat insulating material 29 are covered with an air impermeable coating material. Contact of suction air and primary air is caused at a limited area of the heat-insulating material 29 by the function of an exposed end face 29e and an exposed inner surface 29g of the heat-insulating material 29, and almost all of the suction air drawn into the material 29 from the exposed end face 29e is discharged promptly from the exposed end portion 29e by the energy possessed by ejected primary air. Further, since the primary air and suction air are circulated at a high speed in the heat-insulating material 29, dropwise condensation of moisture is not caused by the vaporizing effect obtained by ventilating function. |
