Berd-Air Silencer Case

SummaryAs the Berd-Air pump is quiet loud, I decided to design a silencer. The silencer uses 3 principles:Decoupling of the pump and soundproof casingSound attenuation of the air inletSound attenuation of the exiting air flowDecoupling and soundproof casingThe case is sealed from the inside with insulating mats usually used to silence a PC. The pump itself hangs on a mount from the ceiling. The coupling was printed from flexible material to minimize the transmission of vibrations.Sound attenuation of the air inletSince the air intake through the housing resonated similar to a subwoofer, I have insulated the air intake separately. The housing of the air inlet is filled with cotton wool. Sound attenuation of the exiting air flowTo silence the air coming out, I designed an air vessel. The air vessel is sealed- the air expandes and the sound is trapped in the chamber. I also recommend filling it with cotton wool. To get the air vessel air tight I recommend to print it with a resin printer.