Silencer
AssigneeAntiphon AB
InventorsBengt R. Johansson, Lennart H. Slycke, Gote V. Norrbrand
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Abstract
A silencer comprising one or more sound-absorbing parts of ceramic material. The ceramic material is porous and the sound-absorbing parts are self-supporting and have a specific resistance to air flow of 10.sup.3 -10.sup.7 Pas/m.sup.2 and a compression strength of at least 40 kN/m.sup.2, preferably at least 400 kN/m.sup.2.
Claims15
A silencer comprising one or more sound-absorbing parts made of ceramic material, characterized in that the ceramic material is porous with communicating pores, that the sound-absorbing parts have been subjected to a high-temperature treatment process at a temperature of at least 500.degree. C., that the parts are self-supporting and have a specific resistance to air flow of 10.sup.3 -10.sup.7 Pas/m.sup.2, preferably 10.sup.4 -10.sup.6 Pas/m.sup.2, which is so high that flowing gases cannot penetrate the parts to any material extent, and a compression strength of at least 40 kN/m.sup.2, preferably at least 400 kN/m.sup.2.
Dependencies are inferred from the claim text.