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11. 发明专利

JPS61250324A NOISE FREQUENCY CORRESPONDING TYPE SILENCER 失效
公开(公告)号：JPS61250324A
公开(公告)日：1986-11-07
申请号：JP8994285
申请日：1985-04-27
申请人： TOUSHIYOU ENG KK , MITSUBISHI HEAVY IND LTD
发明人： SATSUGAWA TARO , SUZUKI HISAO , KOSAKA TERUO
IPC分类号： F01N1/24 , F02C7/24
摘要： PURPOSE:To make a noise absorbable so effectively corresponding to a variation in noise frequency, by making the width of a gas passage, being formed between a sound absorbing members, variable, in case of the silencer made up of setting up these sound absoring members having a bending surface each in a multiply- connected manner. CONSTITUTION:In case of a silencer 1 made up of housing plural sheets of platelike sound absorbing members 2 having a chevronwise section each in succession in a casing so as to form a gas passage between adjacent ones themselves, Odd-numbered sound absorbing members 2 are connected by a connecting member and constituted so as to make them solidly displaceable in a direction in parallel with a virtual surface F passing through a bending top part. And, when these odd-numbered sound absorbing members 2 are displaced up to a one-dot chain line position, broad passage width S2 and narrow passage width S1 are made so as to be alternately formed. The above displacement corresponds to such one large in a sound pressure level among band center frequencies constituting a noise and is set to silence the noise.

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