Low ice pneumatic motor exhaust muffler

摘要

A muffler for a positive displacement pneumatic motor includes a case, an inlet, a diffuser, a pathway, and sound absorbing material. The inlet and the diffuser are attached to the case. The pathway extends between the inlet and the diffuser and allows ice to travel through the muffler. The sound absorbing material is positioned in the pathway and includes more than one duct through which gas passes.

主权项

1. An exhaust muffler for a positive displacement pneumatic motor, the muffler extending along an axis and having a first end and a second end, the muffler comprising:
a case; an inlet attached to the case at the first end of the muffler; a diffuser directly attached to the case and extending from an exterior of the case at the second end of the muffler; a pathway extending between the inlet and the diffuser; and a sound absorbing material positioned in the pathway, the sound absorbing material including a first duct and a second duct through which gas passes, the first and second ducts extending parallel to the axis; wherein the diffuser comprises:
a first ramp that directs gas from the first duct in a first direction away from the axis; anda second ramp positioned opposite of the first ramp that directs gas from the second duct in a second direction away from the axis;wherein the first direction and the second direction are different; wherein the first duct and the second duct are fluidly connected to the inlet and are fluidly separate from one another through the diffuser such that a first flow through the first duct exits the muffler along the first ramp and a second flow through the second duct exits the muffler along the second ramp; and wherein the inlet, diffuser, pathway, and sound absorbing material are configured to provide an unobstructed route for ice to pass through the muffler.