| 摘要 |
An inlet tube (1) is provided, to which is connected an air distribution chamber (2) which has two sets of laterally located air apertures (3,4). The air apertures lead to the ventilated space and function at different pressures. Between them is a perforated intermediary plate (5), above which an air distribution chamber (6) is formed with higher pressure and below it a pressure chamber (7) with lower pressure. |
