| 摘要 |
An air supply device (17,18) including an elongated blow opening (23) for blowing ejector air (P1,P3) directed towards an exhaust device for entraining polluted air or other gases which are to be exhausted. A casing (17,18) is provided with a shield wall (19,20) adjacent to one side of the blow opening (23), so that the polluted air or other gases are caused to flow (P2) around the casing and to be entrained (P1) adjacent to the other side of the blow opening. |
