MUFFLER WITH ACOUSTIC BARRIER MATERIAL FOR LIMITED CLEARANCE PNEUMATIC DEVICE APPLICATIONS

摘要

A muffler (20) for attenuating noise produced by a pneumatic device having limited clearance. The muffler (20) includes a housing (22) and an acoustic barrier material (24). The housing (22) includes an inlet (30) and an outlet (32). In one preferred embodiment, at least a portion (36) of the housing (22) is frusto-conical such that the outlet (32) has a width greater than a diameter of the inlet (30). Further, the housing (22) preferably has a maximum width less than approximately 1.5 inches (38 mm). The acoustic barrier material (24) is disposed within the housing (22) and includes a plurality of microbubbles. Further, the acoustic barrier material (24) is configured to conform to a shape of the housing (22). The muffler can be utilized with a pneumatic valve having limited space available for receiving the muffler, providing significant noise reduction with minimal back pressure.