公开(公告)号：US3617667A

公开(公告)日：1971-11-02

申请号：US3617667D

申请日：1970-01-27

Applicant: GEN ELECTRIC

Inventor： KIRSCHNER FRANCIS ,  STEWART VINCENT N ,  TOGNELLA UGO R

IPC: H01H33/58

CPC classification number: H01H33/58

Abstract: A noise-reducing exhaust muffler for a gas-blast circuit breaker comprises spaced end walls and four concentric tubular members mounted between the end walls. Exhaust gases enter through one end wall, flow into the space enclosed by the first tubular member, then flow radially outward through holes in the first, second, and third tubular members, and then axially of the muffler between the third and fourth tubular members. The holes in the third and second tubular members are in axially staggered locations so as to introduce additional turns into the flow path and provide solid wall barriers to the radiation of sound energy.