Tunnel dust collecting system.

摘要

The invention relates to a tunnel dust collecting system for removing dust and smoke from the contaminated air in a tunnel used for automotive traffic, the system comprising a dust collecting chamber (2) formed in the upper space of a tunnel (1) with a sealing board (5) in such a manner that said dust collecting chamber has one end serving as an air sucking end (2a) and the other end serving as an air supplying end (2b); electric dust collectors (3) arranged in said dust collecting chamber (2); and air blowers (4) in said dust collecting chamber (2) at the air supplying end. According to the prior art, it is a problem to efficiently mix the contaminated with the purified air obtained from such a dust collecting system. This problem is solved in that in said dust collecting system said air blowers (4) have casings exposed in the lower space of said tunnel (1).