Patent ID: 8518166

Claim:
An air filtering system capable of enhancing inspection convenience, disposed in a ceiling, and comprising: a housing, having an intake and a corresponding outtake on both ends of said housing; a filter, disposed in said housing, having an intake surface and an outtake surface opposite to each other, dividing the inner space of said housing into a first sampling zone and a second sampling zone, said first sampling zone formed between said intake and said intake surface, and said second sampling zone formed between said outtake and said outtake surface; a first sampling tube, a first end of said first sampling tube fixed on said housing and communicating with said first sampling zone; and a second sampling tube, a first end of said second sampling tube fixed on said housing and communicating with said second sampling zone; a smoke cabinet, connected with the intake and the first sampling zone, said smoke cabinet isolate produced exhaust gases from atmosphere, the produced exhaust gases are received from the intake and entered to the first sampling zone; wherein a second end of said first sampling tube and a second end of said second sampling tube are both fixed on a wall.