What devices are usually installed at the outlet of exhaust fans?
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What devices are usually installed at the outlet of an exhaust fan? Today, it was found that there were internal components inside a section of pipe at the outlet of one such exhaust fan; there was a cylinder in the middle of the pipe, with a cone at its lower end. The entire cylinder was covered with small holes, and the same applied to the cone as well. Also, this section of pipe is double-layered, with the inner layer also covered in small holes. It’s not a silencer, right? Or a spraying device? However, no takeover was found outside. Just explain.
It’s the silencer:lol:lol
It’s likely a silencer; could it be a fire damper?
Reply to 2# Equipment Operator: Could it be that I’m right? Hehe, haven’t seen it before?
Reply to 3# zgpky: It doesn’t seem to be capable of moving; there are no signs of any rotation. It’s actually welded to the inner wall of the pipe using flat steel